WEBVTT - Ep 132 Osteogenesis Imperfecta: All bones about it

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<v Speaker 1>So the day I was born had some quirks. First,

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<v Speaker 1>it was the most beloved of national holidays, Groundhog Day.

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<v Speaker 1>It was an Appalachian February full of blustery snow. And

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<v Speaker 1>this is my favorite part. My dad's truck broke down

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<v Speaker 1>on the way to meet my mom at the hospital,

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<v Speaker 1>so he caught a ride with my uncle Tommy and

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<v Speaker 1>their good buddy Peanut. That's all fun, not atypical, but

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<v Speaker 1>there was one specific quirk about that day that's important.

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<v Speaker 1>I was born with a broken collar phone. At the time,

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<v Speaker 1>this was not super concerning. The concerning part happened ten

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<v Speaker 1>weeks later when I was kicking around in my crib,

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<v Speaker 1>just doing my baby thing, and my mom heard a

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<v Speaker 1>snap and a screen. She rushed me to the er

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<v Speaker 1>and the X ray showed a broken femur. To make

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<v Speaker 1>a long story short way shorter, because you can imagine

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<v Speaker 1>the questions my parents had to answer about that. I

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<v Speaker 1>was eventually diagnosed with a rare bone disease called osteogenesis imperfecta,

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<v Speaker 1>which we call OH or brittlebones for short, because osteogenesis

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<v Speaker 1>and perfecta is a mouthful. I was born in nineteen

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<v Speaker 1>eighty one, and I think at the time, there were

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<v Speaker 1>just a few types. Now there are even more, ranging

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<v Speaker 1>from incredibly severe to very mild. Mine is a mild form.

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<v Speaker 1>Mostly my OI seems to affect the long bones of

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<v Speaker 1>my legs. I've broken my femurs numerous times, which is

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<v Speaker 1>not a bone that typically breaks without major efforts. And

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<v Speaker 1>even though my bones are the most obvious part of

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<v Speaker 1>my body affected by OI, it evidences in other ways

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<v Speaker 1>in my body too. It affects my teeth, which isn't

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<v Speaker 1>common for every person with OI, but mine have always

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<v Speaker 1>broken very easily. I have some intense sculliosis, which again

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<v Speaker 1>not everybody has, but it's not uncommon. As an adult,

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<v Speaker 1>I am a tower in four foot nine. I work

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<v Speaker 1>with kids a lot, and they always think it's awesome

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<v Speaker 1>that I'm usually smaller than they are. The whites of

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<v Speaker 1>my eyes are a little bit blue. That's a common

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<v Speaker 1>part of OI called blue scin. So it definitely shows

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<v Speaker 1>up in my body in all kinds of ways, and obviously,

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<v Speaker 1>because my body is the vehicle through which I experienced life,

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<v Speaker 1>it shows up in my life in.

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<v Speaker 2>All kinds of ways.

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<v Speaker 1>Somebody recently asked me if growing up was hard because

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<v Speaker 1>of my bones and my first thought, honestly, is that

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<v Speaker 1>my childhood was really great. I have the coolest, funniest

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<v Speaker 1>and most genuinely kind parents. They already had my older sister,

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<v Speaker 1>Bridget when I came along, and of course the three

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<v Speaker 1>of them weren't expecting to have a baby with a disability.

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<v Speaker 1>But I never felt anything but loved as an adult.

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<v Speaker 1>I'm especially amazed that they didn't have a Google to

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<v Speaker 1>read about OI. They didn't have anything like WebMD to

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<v Speaker 1>freak out overall the what it is together. There was

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<v Speaker 1>no support group on Facebook they could use for questions.

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<v Speaker 1>The three of them just had each other, and somehow

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<v Speaker 1>they helped me learn to move through the world, a

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<v Speaker 1>world that's definitely not made for all bodies, with some

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<v Speaker 1>independence and with a whole lot of joy. My brother

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<v Speaker 1>came along five years later, and he also has OI.

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<v Speaker 1>We both used a wheelchair and a walker most of

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<v Speaker 1>the time when we were kids because our bones were weak,

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<v Speaker 1>but our parents would just load them up and we

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<v Speaker 1>would still go on family vacations or go hang out

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<v Speaker 1>with family. My mom would pull me through her garden

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<v Speaker 1>and a wagon. My dad would back the wheelchair up

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<v Speaker 1>into my grandparents' house every weekend, so I could hang

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<v Speaker 1>out with them. My big sister, who was always so

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<v Speaker 1>much cooler and more fun and more awesome, would still

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<v Speaker 1>take me out and do things with me. So with

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<v Speaker 1>my family, I never felt left out. School was a

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<v Speaker 1>little bit different, and of course it would be The

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<v Speaker 1>word I usually heard people describe me with was fragile,

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<v Speaker 1>and for a good reason. Any adult at a school

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<v Speaker 1>would want kids to be extra careful around you. Sports

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<v Speaker 1>were huge in my small town, and naturally any kind

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<v Speaker 1>of contact sport was a heck no for me. But

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<v Speaker 1>as my friends got more and more into sports, I

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<v Speaker 1>full on embraced my nerd self and I got into books.

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<v Speaker 1>I love to read, and I realized pretty soon I

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<v Speaker 1>love to write, and even if I weren't disabled, I

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<v Speaker 1>would have loved writing. But I think my disability was

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<v Speaker 1>a conduit to the early realization that my imagination is limitless.

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<v Speaker 1>In the actual physical world, my body has limits, sometimes

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<v Speaker 1>a lot of them, but my imagination doesn't and it

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<v Speaker 1>never has, and I learned how to flex my imagination

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<v Speaker 1>like a muscle. It's another way I got through the

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<v Speaker 1>trauma that can come with OHI A specific memory I

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<v Speaker 1>have of that would be when I would break my

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<v Speaker 1>leg and I would be at the hospital waiting to

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<v Speaker 1>get it set, which is a very painful process, And

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<v Speaker 1>as that was happening, I would close my.

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<v Speaker 3>Eyes and I would imagine Narnia.

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<v Speaker 1>I would think about as Land from the Lion, the

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<v Speaker 1>witch in the wardrobe right, and what his fur would

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<v Speaker 1>feel like between my fingers, or I would imagine what

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<v Speaker 1>his roar sounded like, and if I could feel it

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<v Speaker 1>inside my chest. And that made me feel brave. And

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<v Speaker 1>I think that's where I realized fiction has the very

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<v Speaker 1>real benefit of helping me realize how brave I can be.

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<v Speaker 1>So it got me through some of that. Because of

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<v Speaker 1>the type of OI I have, my bones did get

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<v Speaker 1>a little stronger as I got older. There's no cure

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<v Speaker 1>for OI, so my bones are always going to be fragile.

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<v Speaker 1>But around the time I started high school, I was

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<v Speaker 1>able to walk independently without a walker or a wheelchair

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<v Speaker 1>as long as I was careful, And I realized then,

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<v Speaker 1>for me at least, sometimes it's just as hard, if

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<v Speaker 1>not harder, to advocate for your body and your health

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<v Speaker 1>when your disability seems invisible, even though it isn't, even

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<v Speaker 1>though it's something that still dictates everything you do in

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<v Speaker 1>a day as an adult, especially lately, OI has affected

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<v Speaker 1>my career, but not in a way I thought it would.

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<v Speaker 1>I actually get to write for a living, which has

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<v Speaker 1>been my dream job since I was in third grade. Specifically,

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<v Speaker 1>I get to write novels for kids. To me, those

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<v Speaker 1>novels that we read as kids are at the best books.

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<v Speaker 1>Those are the books that help me trudge through the dark,

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<v Speaker 1>that helped me realize how brave I could be. My

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<v Speaker 1>first novel for kids was published in twenty fourteenth Scholastic.

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<v Speaker 1>My first novel was a contemporary fantasy called a Snicker

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<v Speaker 1>of Magic, and I got to keep writing more and

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<v Speaker 1>more after that, and I love it. But I had

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<v Speaker 1>never written a character like me who had OI until now.

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<v Speaker 1>My most recent novel, Hummingbird, came out in August of

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<v Speaker 1>twenty twenty two, and this one is about a girl

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<v Speaker 1>named Olive who is homeschooled because she also has osteogenesis

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<v Speaker 1>and perfecta, and her parents are kind of nervous about

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<v Speaker 1>all of attending the public school, but she talks them

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<v Speaker 1>into it. She goes, and the first day of sixth

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<v Speaker 1>grade is a disaster, as sixth grade often is, until

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<v Speaker 1>she hears a story about an enchanted creature in the

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<v Speaker 1>woods that Grant's wishes, and she decides she is going

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<v Speaker 1>to find it now. Obviously, Olive, like I said, has

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<v Speaker 1>brutal bones, HERI is mildlike mind, and at first this

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<v Speaker 1>wasn't going to be a big part of her story

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<v Speaker 1>because honestly, I didn't know if people wanted to really

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<v Speaker 1>read about how I felt about my disability. The most

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<v Speaker 1>common line I see in books when a character is

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<v Speaker 1>disabled is something like, my disability is my superpower, which

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<v Speaker 1>is awesome, but it's not always how I feel. Most days,

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<v Speaker 1>I love my life and I'm grateful for my body.

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<v Speaker 1>I'm grateful I get experienced life inside it, but my

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<v Speaker 1>body also breaks for seemingly no reason sometimes, and that

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<v Speaker 1>can be frustrating and painful. I always say my relationship

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<v Speaker 1>with my body will be the most complicated I have

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<v Speaker 1>in my life, and that's true, but who would want

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<v Speaker 1>to read that? So at first, when I was writing

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<v Speaker 1>about Olive, I just wanted her to be fully, completely

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<v Speaker 1>confident in herself, figuring out her own way to move

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<v Speaker 1>through the world. Magic Adventure First crushures all of that

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<v Speaker 1>good stuff, but it's like I couldn't find the heart

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<v Speaker 1>of her story. And then in twenty nineteen, I was

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<v Speaker 1>walking through the kitchen one night to check the doorlocks

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<v Speaker 1>and I slipped and dog droll and as I was falling,

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<v Speaker 1>I heard the snap that water is sickening, terrible sound,

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<v Speaker 1>and then came this flood of pain, because breaking the

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<v Speaker 1>femur is no joke. And in the months after that,

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<v Speaker 1>I remembered what it feels like to be in that

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<v Speaker 1>specific place again, to be in physical therapy again, nervous

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<v Speaker 1>every time something hurts, to not be able to get

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<v Speaker 1>in some buildings again because there's no access to them.

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<v Speaker 1>And one night I was playing Mario on the couch

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<v Speaker 1>beside my husband, having an intense pity party for myself,

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<v Speaker 1>and I said, I'm broken and I hate my body

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<v Speaker 1>and I'm frustrated, and he very gently said, hey, your

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<v Speaker 1>leg's broken, you aren't broken. And that's what gave me

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<v Speaker 1>the clarity I needed to write a Hummingbird in a

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<v Speaker 1>way that was absolutely true to me. All of and

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<v Speaker 1>I both love our families, we both love Dolly Parton,

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<v Speaker 1>we both romanticize life and we see the magic in it,

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<v Speaker 1>and we both have this disability that is sometimes really

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<v Speaker 1>frustrating especially all of age. She's twelve. In the story,

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<v Speaker 1>she is seeing how bodies are changing all around her

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<v Speaker 1>and how hers isn't, or how it is changing but

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<v Speaker 1>not quite the same way, and that can be tough.

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<v Speaker 1>It was tough for me at least. I remembered what

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<v Speaker 1>it was like to feel left out, to be called fragile.

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<v Speaker 1>But I also remember the people in my life who

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<v Speaker 1>loved me and who called out every good thing instead.

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<v Speaker 1>My parents, my siblings, now justin my husband, my friends.

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<v Speaker 1>They've all helped me find these doorways into my imagination,

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<v Speaker 1>and they've helped me make the life I love that

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<v Speaker 1>I'm really proud of. So in the story, all of

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<v Speaker 1>actually sets out thinking she is going to wish away

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<v Speaker 1>her OI. And I won't spoil it and tell you

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<v Speaker 1>what happens, but I will say that, like all of

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<v Speaker 1>I still believe a person's body is the least interesting

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<v Speaker 1>thing about them. But having said that, I'm more passionate

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<v Speaker 1>than ever about writing books where every kind of kid

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<v Speaker 1>and everybody feels accepted and loved and knows they have

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<v Speaker 1>a place to belong. No matter how old we are,

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<v Speaker 1>I think we all just want to know somebody's staving

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<v Speaker 1>a seat for us in the cafeteria. And because of

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<v Speaker 1>that book, I am talking a lot about OI now

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<v Speaker 1>and how it looks in my life, and specifically when

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<v Speaker 1>I talk to kids. There is one scene I bring up.

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<v Speaker 1>There is a scene where all of wonders if she's

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<v Speaker 1>ever going to have a big life because of her body.

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<v Speaker 1>She's experiencing gym class for the first time, and that's

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<v Speaker 1>when her self esteem really starts to tank because she

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<v Speaker 1>sees how different bodies looks, and she starts asking the

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<v Speaker 1>big questions, what if nobody ever wants to go out

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<v Speaker 1>with me because my body doesn't look like other people's bodies?

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<v Speaker 1>What if I can't have the career I want to

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<v Speaker 1>have because of how I look? All of the big

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<v Speaker 1>hard stuff and the answer to that question, This is

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<v Speaker 1>what I tell kids, even though it's kind of corny. Yes,

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<v Speaker 1>you get to have a big, amazing life in the

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<v Speaker 1>body you are in. You get to fall in love,

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<v Speaker 1>you get to have adventures and experience so much joy.

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<v Speaker 1>This is all one small part of a really big story.

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<v Speaker 1>And I hope other kids with OOUGHI have never ever

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<v Speaker 1>doubted that maybe they haven't, and that would be awesome,

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<v Speaker 1>But just in case, there's somebody out there wondering like

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<v Speaker 1>I did, if the body therein will hinder them from

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<v Speaker 1>living the life if they want to have it, won't.

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<v Speaker 1>I hope kids who read the book, No, there's magic

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<v Speaker 1>out there waiting for them. They get to experience it

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<v Speaker 1>in the body therein, and they deserve every good thing

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<v Speaker 1>to end. I'll say that in the story, there is

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<v Speaker 1>a line when Olive says, my bones are fragile, but

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<v Speaker 1>I am not, and that is how I feel about

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<v Speaker 1>my body too.

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<v Speaker 2>Oh my gosh, Natalie, thank you so so much for

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<v Speaker 2>sharing your story like that was absolutely amazing.

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<v Speaker 3>Yeah, thank you for sharing it with us and all

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<v Speaker 3>of our listeners and so many more with your book.

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<v Speaker 2>Yes, oh my gosh. Okay, everyone right now, go out

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<v Speaker 2>pick up a copy of Hummingbird by Natalie Lloyd. It

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<v Speaker 2>is amazing. I cannot recommend it highly enough. I laughed,

0:12:34.240 --> 0:12:37.520
<v Speaker 2>I cried like I could not put it down. And

0:12:37.720 --> 0:12:39.880
<v Speaker 2>Natalie has so many other books, so you can find

0:12:39.920 --> 0:12:43.280
<v Speaker 2>them all on her website Natalie Lloyd dot com. And

0:12:43.320 --> 0:12:45.199
<v Speaker 2>we will also post a link to where you can

0:12:45.240 --> 0:12:48.360
<v Speaker 2>find all of Natalie's books on our show notes for

0:12:48.400 --> 0:12:51.720
<v Speaker 2>this episode, as well as on our website for this episode.

0:12:51.960 --> 0:12:54.560
<v Speaker 2>We sure will Hi, I'm erin.

0:12:54.480 --> 0:12:56.880
<v Speaker 3>Welsh and I'm erin alman Updyke.

0:12:56.760 --> 0:12:58.800
<v Speaker 2>And this is this podcast will kill you.

0:12:59.240 --> 0:13:04.679
<v Speaker 3>And today we're talking about osteogenesis imperfecta. We certainly are.

0:13:05.800 --> 0:13:08.800
<v Speaker 2>This is a really interesting one because I know we've

0:13:08.840 --> 0:13:12.440
<v Speaker 2>been doing more non infectious diseases like as the seasons

0:13:12.440 --> 0:13:16.120
<v Speaker 2>have gone on, but it's just amazing how each one

0:13:16.160 --> 0:13:18.360
<v Speaker 2>of them sort of gives us this opportunity to look

0:13:18.400 --> 0:13:23.200
<v Speaker 2>at something totally different that we never really get to

0:13:23.320 --> 0:13:28.559
<v Speaker 2>think about, like collagen. I know, what the heck.

0:13:28.440 --> 0:13:32.080
<v Speaker 3>It's been since season two that we've talked about collagen.

0:13:32.200 --> 0:13:35.480
<v Speaker 2>I know, I kept thinking collagen is the pull and

0:13:35.559 --> 0:13:36.520
<v Speaker 2>peel Twizzlers?

0:13:36.640 --> 0:13:41.120
<v Speaker 3>Is that? Yes? Oh my gosh, Aaron, you basically took

0:13:41.120 --> 0:13:42.839
<v Speaker 3>my whole biology section done.

0:13:42.760 --> 0:13:47.600
<v Speaker 2>Done, onto the history. Just kidding, just kidding. We do

0:13:47.679 --> 0:13:50.200
<v Speaker 2>have a lot to cover today, and so maybe we

0:13:50.240 --> 0:13:54.320
<v Speaker 2>should start by getting into quarantine any time.

0:13:54.679 --> 0:13:59.520
<v Speaker 3>Absolutely, what are we drinking this week? Aaron?

0:14:00.880 --> 0:14:01.360
<v Speaker 2>This week?

0:14:01.440 --> 0:14:01.720
<v Speaker 3>Aaron?

0:14:02.520 --> 0:14:07.240
<v Speaker 2>I love this me too. We're drinking the collagen fizz.

0:14:10.120 --> 0:14:13.480
<v Speaker 3>It's just feels good that I can't believe that we've

0:14:13.520 --> 0:14:14.480
<v Speaker 3>never done it before.

0:14:14.640 --> 0:14:17.320
<v Speaker 2>I know, we both scrolled through are like our entire

0:14:17.400 --> 0:14:22.120
<v Speaker 2>page of quarantinies looking for it. Their collagen doesn't appear

0:14:22.160 --> 0:14:23.320
<v Speaker 2>in the title, right.

0:14:23.240 --> 0:14:26.680
<v Speaker 3>Yeah, which I mean clearly we need to do more

0:14:26.720 --> 0:14:30.320
<v Speaker 3>collagen based diseases, for sure. There's so many other options,

0:14:30.400 --> 0:14:33.720
<v Speaker 3>for sure. In any case, what's in a collagen fizz?

0:14:33.880 --> 0:14:38.280
<v Speaker 2>A collagen fizz is just a simple twist variant on

0:14:38.360 --> 0:14:42.160
<v Speaker 2>your standard gin fizz. It has gin naturally, it has

0:14:42.240 --> 0:14:47.600
<v Speaker 2>collagens collagen it actually kind of does. It has passion

0:14:47.600 --> 0:14:51.480
<v Speaker 2>fruit juice, it has lime juice, simple syrup, club soda,

0:14:51.600 --> 0:14:56.480
<v Speaker 2>and of course for the collagen part, egg white foam.

0:14:56.760 --> 0:14:57.360
<v Speaker 3>Gotta love that.

0:14:57.760 --> 0:14:58.400
<v Speaker 2>Yeah.

0:14:58.600 --> 0:15:01.560
<v Speaker 3>We'll post the full recipe that quarantine as well as

0:15:01.560 --> 0:15:04.560
<v Speaker 3>our non alcoholic plusy barreta on our website This Podcast

0:15:04.560 --> 0:15:06.880
<v Speaker 3>will Kill You dot Com and our social media. Do

0:15:06.920 --> 0:15:08.400
<v Speaker 3>you follow us yet? You should follow us?

0:15:08.440 --> 0:15:14.320
<v Speaker 2>There website stuff on our website This Podcast will Kill

0:15:14.360 --> 0:15:17.640
<v Speaker 2>You dot Com. There's no end to what you can find.

0:15:18.800 --> 0:15:22.120
<v Speaker 2>There's transcripts, there's sources for each and every one of

0:15:22.160 --> 0:15:25.800
<v Speaker 2>our episodes. There's music by Bloodmobile check it out. There

0:15:25.800 --> 0:15:28.800
<v Speaker 2>are links to bookshop dot org, affiliate account, and our

0:15:28.840 --> 0:15:32.800
<v Speaker 2>Goodreads list. There's links to merch, which is pretty sweet

0:15:32.840 --> 0:15:37.280
<v Speaker 2>if you ask me. There's links to Patreon. There's a

0:15:37.280 --> 0:15:41.520
<v Speaker 2>little about us section that is woefully outdated.

0:15:42.120 --> 0:15:44.960
<v Speaker 3>Woefully I just looked at it and I was like, oof, Yep,

0:15:45.640 --> 0:15:48.600
<v Speaker 3>we updated it since we graduated, but it's been a minute.

0:15:49.800 --> 0:15:51.880
<v Speaker 2>I've avoided looking at it because I'm like, this is

0:15:52.640 --> 0:15:54.240
<v Speaker 2>it's gonna make me want to do something, and I

0:15:54.280 --> 0:15:57.080
<v Speaker 2>don't want to do something about it right now. Anyway,

0:15:57.680 --> 0:15:59.440
<v Speaker 2>lots of stuff on our website.

0:15:59.560 --> 0:16:03.640
<v Speaker 3>Check it out. Mm hmmmm hm. Well with that, should

0:16:03.720 --> 0:16:07.600
<v Speaker 3>we get into the biology of this disorder?

0:16:08.000 --> 0:16:41.720
<v Speaker 4>We absolutely should right after this break.

0:16:42.400 --> 0:16:47.920
<v Speaker 3>Osteogenesis imperfecta is also called brittle bone disease, and that

0:16:48.520 --> 0:16:54.280
<v Speaker 3>Moniker exists because the main symptom or consequence rather of

0:16:54.400 --> 0:16:59.680
<v Speaker 3>osteogenesis imperfecta is in fact, bones that are very prone

0:16:59.800 --> 0:17:05.760
<v Speaker 3>to fracture, bones that break easily and are brittle. But

0:17:06.600 --> 0:17:09.399
<v Speaker 3>of course it's a bit more complicated than that. And

0:17:09.720 --> 0:17:14.080
<v Speaker 3>in fact, osteogenesis imperfecta is a lot more complicated than

0:17:14.080 --> 0:17:16.639
<v Speaker 3>I realized when we decided to do this episode.

0:17:17.240 --> 0:17:18.880
<v Speaker 2>I had no idea.

0:17:19.240 --> 0:17:24.320
<v Speaker 3>It's classic, classic, right, yeah, so historically speaking, and I

0:17:24.359 --> 0:17:26.520
<v Speaker 3>promise I'm not stepping on your toes arin.

0:17:27.000 --> 0:17:27.600
<v Speaker 2>How dare you?

0:17:27.920 --> 0:17:30.000
<v Speaker 3>Mm hmm, I say the word history, and then I

0:17:30.040 --> 0:17:37.360
<v Speaker 3>have to qualify it. But historically speaking, osteogenesis imperfecta had

0:17:37.440 --> 0:17:41.840
<v Speaker 3>been classified into like four different subgroups, types one through four.

0:17:42.720 --> 0:17:47.560
<v Speaker 3>Type one was considered relatively mild and by far considered

0:17:47.600 --> 0:17:53.000
<v Speaker 3>the most common type of osteogenesis imperfecta. Type two was

0:17:53.200 --> 0:17:58.040
<v Speaker 3>the most severe and actually lethal perinatally, so either shortly

0:17:58.080 --> 0:18:03.399
<v Speaker 3>before birth or after birth. Type three was considered relatively

0:18:03.440 --> 0:18:07.399
<v Speaker 3>severe and progressive, and then type four was considered the

0:18:07.440 --> 0:18:14.159
<v Speaker 3>most moderate, so somewhere in between types one and type three. Nowadays, though,

0:18:14.800 --> 0:18:19.680
<v Speaker 3>this classification system does not hold up because we have

0:18:19.920 --> 0:18:25.520
<v Speaker 3>now identified dozens of potential mutations that are involved and

0:18:25.680 --> 0:18:29.800
<v Speaker 3>a very wide range of clinical phenotypes or the way

0:18:29.840 --> 0:18:35.199
<v Speaker 3>that osteogenesis imperfecta presents. And so what we know now

0:18:35.760 --> 0:18:39.520
<v Speaker 3>is that at its core, no matter what the mutation

0:18:39.720 --> 0:18:42.480
<v Speaker 3>or mutations are that are involved, and we'll get there,

0:18:42.520 --> 0:18:46.919
<v Speaker 3>we'll talk about all of that. But osteogenesis imperfecta is

0:18:47.200 --> 0:18:52.920
<v Speaker 3>broadly speaking, a disorder of collagen formation. So to understand it,

0:18:53.400 --> 0:18:58.400
<v Speaker 3>let's start first with collagen yay, good, And for this

0:18:58.640 --> 0:19:02.000
<v Speaker 3>we can harken back to our Scurvy episode all the

0:19:02.000 --> 0:19:05.160
<v Speaker 3>way back in season two, still one of my all

0:19:05.200 --> 0:19:08.639
<v Speaker 3>time phaves. I think same same, such a great episode,

0:19:08.680 --> 0:19:10.720
<v Speaker 3>it's super fun. If you haven't listened, check it out.

0:19:12.280 --> 0:19:15.760
<v Speaker 3>But collagen is integral to the story of scurvy, just

0:19:15.800 --> 0:19:19.440
<v Speaker 3>as it's integral to the story of osteogenesis imperfecta. So

0:19:19.560 --> 0:19:23.000
<v Speaker 3>collagen is a protein, it's a whole bunch of proteins,

0:19:23.520 --> 0:19:28.199
<v Speaker 3>structural proteins that happen to be one of, if not

0:19:28.520 --> 0:19:33.679
<v Speaker 3>the most common proteins in our human bodies. And proteins

0:19:33.800 --> 0:19:38.240
<v Speaker 3>are simply chains of amino acids. That's really all they are.

0:19:38.840 --> 0:19:42.240
<v Speaker 3>And in the case of collagen, collagen is made of

0:19:42.280 --> 0:19:48.840
<v Speaker 3>a few different specific amino acids glycine, prolene, hydroxyproleine, hydroxy lysine,

0:19:48.880 --> 0:19:51.760
<v Speaker 3>and probably some others, but glycine is an important one.

0:19:52.640 --> 0:19:56.240
<v Speaker 3>And in a collagen protein, here is the way that

0:19:56.359 --> 0:20:01.560
<v Speaker 3>it forms. Amino Acids make chains link together to form chains.

0:20:02.640 --> 0:20:07.600
<v Speaker 3>These chains are called pro collagens. Three of these chains

0:20:08.080 --> 0:20:11.320
<v Speaker 3>have to then twist together in a certain way in

0:20:11.400 --> 0:20:14.560
<v Speaker 3>what's called a triple helix. So if you think of

0:20:14.600 --> 0:20:17.040
<v Speaker 3>our DNA as being a double helix, this is a

0:20:17.160 --> 0:20:21.920
<v Speaker 3>triple helix and this triple helix is what you mentioned, Aaron.

0:20:21.960 --> 0:20:25.280
<v Speaker 3>You can think of it like a pull and peel twizzlers.

0:20:25.080 --> 0:20:28.280
<v Speaker 2>Right exactly what is I'm picturing in my head right now?

0:20:28.400 --> 0:20:31.720
<v Speaker 3>Yes, that is what you should be picturing. But then

0:20:32.160 --> 0:20:36.040
<v Speaker 3>multiple of these twizzlers, multiple of these triple helices have

0:20:36.280 --> 0:20:41.000
<v Speaker 3>to then come together in a fairly complex way to

0:20:41.200 --> 0:20:44.879
<v Speaker 3>form the larger scale fibers and networks that make up

0:20:45.280 --> 0:20:51.280
<v Speaker 3>collagen as a whole. Protein and collagen or collagens happen

0:20:51.320 --> 0:20:54.560
<v Speaker 3>to be pretty important proteins. Like I said, some papers

0:20:54.640 --> 0:20:57.400
<v Speaker 3>will tell you that thirty percent of the dry weight

0:20:57.520 --> 0:20:59.280
<v Speaker 3>of our body is collagen.

0:20:59.560 --> 0:21:00.240
<v Speaker 1>I saw that.

0:21:00.760 --> 0:21:04.080
<v Speaker 3>Yeah, it's massive. I had no idea like me either.

0:21:04.480 --> 0:21:06.320
<v Speaker 3>I knew collagen was a big deal, but I didn't

0:21:06.320 --> 0:21:09.320
<v Speaker 3>know it was that big of a deal. And it's

0:21:09.400 --> 0:21:12.560
<v Speaker 3>not just collagen, as I've alluded to. There are in

0:21:12.680 --> 0:21:17.359
<v Speaker 3>fact five different types of collagen, types one through five,

0:21:17.880 --> 0:21:21.960
<v Speaker 3>that make up literally so many parts of our body.

0:21:22.080 --> 0:21:27.040
<v Speaker 3>These are structural proteins. Collagen makes up our blood, vessels,

0:21:27.480 --> 0:21:32.040
<v Speaker 3>our muscles, our skin, our cartilage, our connective tissue, the

0:21:32.119 --> 0:21:36.200
<v Speaker 3>basement membranes, which is like where one layer of cells

0:21:36.280 --> 0:21:39.520
<v Speaker 3>might change to a different type of cells. They make

0:21:39.600 --> 0:21:44.040
<v Speaker 3>up our hair, and of course, our bones. Integral to

0:21:44.119 --> 0:21:48.560
<v Speaker 3>today's episode of these five different types of collagen, our

0:21:48.720 --> 0:21:53.480
<v Speaker 3>bones are primarily made up of type one collagen, which

0:21:53.600 --> 0:21:58.600
<v Speaker 3>then becomes mineralized to form our hard bones. But type

0:21:58.640 --> 0:22:01.960
<v Speaker 3>one collagen is not only found in our bones. It's

0:22:02.080 --> 0:22:05.879
<v Speaker 3>also an important component of our skin, of our tendons,

0:22:06.240 --> 0:22:08.879
<v Speaker 3>of our blood vessels, and even the structure of a

0:22:08.920 --> 0:22:11.560
<v Speaker 3>lot of our organs. Can I just throw out the

0:22:11.680 --> 0:22:13.800
<v Speaker 3>etymology of collagen real quick, because I.

0:22:13.960 --> 0:22:18.480
<v Speaker 2>Don't have it in my history, please. It basically means

0:22:18.840 --> 0:22:20.679
<v Speaker 2>like glue generating.

0:22:21.960 --> 0:22:24.800
<v Speaker 3>I love that. Yeah that's very accurate, Like collagen holds

0:22:24.880 --> 0:22:25.320
<v Speaker 3>us together?

0:22:25.560 --> 0:22:26.880
<v Speaker 2>Yeah, exactly.

0:22:28.920 --> 0:22:33.520
<v Speaker 3>Beautiful. So collagen, it's a complex protein. I just keep

0:22:33.600 --> 0:22:37.280
<v Speaker 3>saying collagen as if it's singular. It's many collagen.

0:22:37.400 --> 0:22:41.840
<v Speaker 2>I mean, we also talk about osteogenesis imperfecta as a disorder,

0:22:41.920 --> 0:22:45.000
<v Speaker 2>and it's certainly not a dissember.

0:22:44.920 --> 0:22:49.600
<v Speaker 3>So forgive us for the grammatical errors here. But because

0:22:49.840 --> 0:22:54.720
<v Speaker 3>these are complex proteins, it is then understandable that there

0:22:54.840 --> 0:22:57.760
<v Speaker 3>are a lot of places where things could get a

0:22:57.880 --> 0:23:02.840
<v Speaker 3>little wonky, and we talked about some of that in

0:23:03.080 --> 0:23:07.119
<v Speaker 3>our scurvy episode. There is some like deep biochemistry that

0:23:07.240 --> 0:23:10.720
<v Speaker 3>we could get into about, like the triplet complexes and

0:23:10.960 --> 0:23:13.800
<v Speaker 3>how they have to form with every third amino acid

0:23:13.880 --> 0:23:18.000
<v Speaker 3>being glycine and et cetera, et cetera. But if we

0:23:18.240 --> 0:23:21.960
<v Speaker 3>just think of making a protein as starting with a

0:23:22.080 --> 0:23:25.840
<v Speaker 3>set of building blocks like connects, those are the best

0:23:25.880 --> 0:23:27.440
<v Speaker 3>ones I can think of. You know those toys.

0:23:27.560 --> 0:23:28.080
<v Speaker 1>Yeah, yeah.

0:23:28.840 --> 0:23:32.600
<v Speaker 3>So if each of these blocks are our amino acids,

0:23:33.160 --> 0:23:36.000
<v Speaker 3>these have to fit together to make a specific type

0:23:36.040 --> 0:23:38.800
<v Speaker 3>of strand, and then each of these strands have to

0:23:38.880 --> 0:23:42.120
<v Speaker 3>fit together in this precise way for this triple helix

0:23:42.200 --> 0:23:44.880
<v Speaker 3>to be formed in the correct way so that it's

0:23:45.000 --> 0:23:50.639
<v Speaker 3>strong enough and able to then fold and twist together

0:23:50.880 --> 0:23:55.560
<v Speaker 3>to build larger structures. At any and all of these levels,

0:23:55.680 --> 0:23:59.600
<v Speaker 3>at the amino acid level, or at the triple helix level,

0:24:00.160 --> 0:24:03.160
<v Speaker 3>or at the larger structural level, there could be things

0:24:03.240 --> 0:24:07.320
<v Speaker 3>that get a little bit messed up and therefore cause

0:24:07.560 --> 0:24:15.159
<v Speaker 3>issues with the strength of that collagen. Osteogenesis imperfecta is

0:24:15.200 --> 0:24:20.480
<v Speaker 3>a group of genetic based disorders of collagen production, either

0:24:20.640 --> 0:24:26.679
<v Speaker 3>affecting the quantity of collagen that's produced or the quality

0:24:27.200 --> 0:24:30.240
<v Speaker 3>of that collagen. That's what it is at its core,

0:24:31.800 --> 0:24:35.360
<v Speaker 3>so older textbooks, like I mentioned, older papers will describe

0:24:35.359 --> 0:24:39.680
<v Speaker 3>it specifically as an autosomal dominant disorder, meaning that it's

0:24:39.720 --> 0:24:42.879
<v Speaker 3>coming from a mutation in a gene on not our

0:24:42.920 --> 0:24:48.240
<v Speaker 3>sex chromosomes, but our autosomes, and that will cause disease

0:24:48.359 --> 0:24:51.480
<v Speaker 3>even with just one copy present, as opposed to lots

0:24:51.520 --> 0:24:54.120
<v Speaker 3>of the other genetic diseases that we've covered on the podcast,

0:24:54.440 --> 0:24:57.000
<v Speaker 3>where you have to have two copies of a mutated

0:24:57.040 --> 0:24:59.840
<v Speaker 3>gene to be able to have disease like cystic fibro

0:25:00.320 --> 0:25:03.479
<v Speaker 3>or sickle cell. And that's because that in the past,

0:25:04.200 --> 0:25:08.920
<v Speaker 3>osteogenesis imperfecta was considered to be caused by mutations specifically

0:25:09.080 --> 0:25:14.440
<v Speaker 3>in one of two genes, col ONEA one and col

0:25:14.560 --> 0:25:19.120
<v Speaker 3>one A two, And these are two genes that encode

0:25:19.320 --> 0:25:22.560
<v Speaker 3>for our type one collagen, the most abundant form of

0:25:22.640 --> 0:25:25.960
<v Speaker 3>collagen in our bones and our skin and tendons and

0:25:26.040 --> 0:25:29.200
<v Speaker 3>lots of other things. And it is still true that

0:25:29.359 --> 0:25:33.960
<v Speaker 3>the vast majority of cases of osteogenesis imperfecta, about eighty

0:25:34.080 --> 0:25:37.639
<v Speaker 3>five to ninety percent of cases, are caused in this

0:25:37.840 --> 0:25:42.159
<v Speaker 3>way by autosomal dominant mutations in these two genes, or

0:25:42.200 --> 0:25:45.680
<v Speaker 3>at least one of these two genes, the genes that

0:25:45.720 --> 0:25:50.960
<v Speaker 3>are encoding for type one collagen. But not every case

0:25:51.200 --> 0:25:56.840
<v Speaker 3>of osteogenesis imperfecta fits that description, and even within that,

0:25:57.560 --> 0:26:01.240
<v Speaker 3>there are so many different specific mutations that can occur

0:26:02.720 --> 0:26:02.920
<v Speaker 3>in that.

0:26:03.080 --> 0:26:06.199
<v Speaker 2>I mean, it kind of reminds me to some degree

0:26:06.480 --> 0:26:12.480
<v Speaker 2>of cystic fibrosis, where there's like a whole different array

0:26:13.320 --> 0:26:17.560
<v Speaker 2>yeah mutations and downstream effects and where it happens and

0:26:17.680 --> 0:26:20.439
<v Speaker 2>when it happens and what the results are and stuff

0:26:20.520 --> 0:26:20.680
<v Speaker 2>like that.

0:26:21.440 --> 0:26:24.159
<v Speaker 3>Yes, one hundred percent in our cystic fibrosis episode. We

0:26:24.200 --> 0:26:28.600
<v Speaker 3>talked a lot about that, and to reflect that there

0:26:28.720 --> 0:26:32.320
<v Speaker 3>are no longer considered only four classes of osteogenesis imperfecta.

0:26:33.520 --> 0:26:37.040
<v Speaker 3>Most papers that I read said there's about nineteen or twenty,

0:26:37.720 --> 0:26:41.800
<v Speaker 3>depending on the phenotype or clinical presentation. At least one

0:26:41.920 --> 0:26:46.160
<v Speaker 3>paper that I read proposed an entirely different classification system

0:26:46.800 --> 0:26:53.640
<v Speaker 3>that grouped osteogenesis imperfecta by like metabolism and phenotype into

0:26:53.760 --> 0:26:57.600
<v Speaker 3>like A through E, and then subgroupings within each of

0:26:57.720 --> 0:27:03.400
<v Speaker 3>those obligated. But the point is we now know there

0:27:03.480 --> 0:27:07.800
<v Speaker 3>are dozens of different specific genetic mutations in a whole

0:27:07.880 --> 0:27:11.280
<v Speaker 3>bunch of different genes and locations on different genes on

0:27:11.720 --> 0:27:15.159
<v Speaker 3>various chromosomes at this point, but they all end up

0:27:15.280 --> 0:27:20.200
<v Speaker 3>affecting either the production of type one collagen or the

0:27:20.359 --> 0:27:24.600
<v Speaker 3>formation or the folding or the mechanics of type one collagen.

0:27:25.280 --> 0:27:28.159
<v Speaker 2>Can I ask a question about the typing system?

0:27:28.640 --> 0:27:28.920
<v Speaker 3>Sure?

0:27:29.480 --> 0:27:33.040
<v Speaker 2>Are the types more about the end result? Are they

0:27:33.119 --> 0:27:37.240
<v Speaker 2>more about the mutation itself leading to the end result?

0:27:37.560 --> 0:27:40.879
<v Speaker 2>Or are does there exist like a functional typing system

0:27:41.119 --> 0:27:47.240
<v Speaker 2>with different treatment protocols or diagnostic criteria or something like that.

0:27:48.000 --> 0:27:51.200
<v Speaker 3>Yeah, great question. So when it comes to the typing

0:27:51.600 --> 0:27:55.240
<v Speaker 3>of ostrogenesism perfecta, from what I can tell, it's still

0:27:55.400 --> 0:27:58.560
<v Speaker 3>a little bit messy and maybe like in the process

0:27:58.600 --> 0:28:03.800
<v Speaker 3>of undergoing revision, because there are different papers that proposed

0:28:04.000 --> 0:28:08.920
<v Speaker 3>different ideas on how to classify it. Okay, but a

0:28:09.080 --> 0:28:12.320
<v Speaker 3>lot of effort has been made to try and link

0:28:13.080 --> 0:28:19.000
<v Speaker 3>known genotypes, so like known and found specific mutations to

0:28:20.040 --> 0:28:23.520
<v Speaker 3>people to individuals that are living with osteogenesis and perfecta

0:28:23.880 --> 0:28:29.040
<v Speaker 3>regardless of the symptoms. If that makes sense, Okay, because

0:28:29.280 --> 0:28:32.280
<v Speaker 3>as we all talk about, one hope is for things

0:28:32.359 --> 0:28:35.280
<v Speaker 3>like gene therapy or targeted therapy, and so knowing what

0:28:35.400 --> 0:28:39.320
<v Speaker 3>the mutations are help in that respect. But as we'll

0:28:39.360 --> 0:28:43.360
<v Speaker 3>also talk about in some ways you can also treat

0:28:43.520 --> 0:28:46.160
<v Speaker 3>more broadly, if that makes sense. Yeah, yeah, yeah, so

0:28:46.440 --> 0:28:51.240
<v Speaker 3>kind of both. And but it is true that these

0:28:51.360 --> 0:28:56.840
<v Speaker 3>different mutations can lead to really variable degrees of disruption

0:28:57.360 --> 0:29:02.040
<v Speaker 3>to the structure of collagen and therefore really huge variation

0:29:02.240 --> 0:29:05.520
<v Speaker 3>in terms of symptoms and clinical findings. The way that

0:29:05.640 --> 0:29:09.880
<v Speaker 3>I think of it is, depending on what the mutation is,

0:29:10.800 --> 0:29:14.800
<v Speaker 3>you can think of replacing that sturdy twizzler rope that

0:29:14.920 --> 0:29:17.200
<v Speaker 3>you could use to build stuff, or like the connects

0:29:17.760 --> 0:29:23.240
<v Speaker 3>rope with like cooked spaghetti noodles or uncooked spaghetti noodles,

0:29:23.520 --> 0:29:26.640
<v Speaker 3>or like a nylon rope that's like slipperar. Right, Like,

0:29:26.840 --> 0:29:29.880
<v Speaker 3>just a lot of different ways that things could change

0:29:30.880 --> 0:29:35.000
<v Speaker 3>that all lead to bones that are more easily fractured,

0:29:35.920 --> 0:29:38.480
<v Speaker 3>but not necessarily all in the same way.

0:29:39.120 --> 0:29:39.320
<v Speaker 1>Yeah.

0:29:39.960 --> 0:29:42.720
<v Speaker 3>Now, another important part of the story of osteogenesis in

0:29:42.760 --> 0:29:49.200
<v Speaker 3>perfecta is that not all mutations involve the formation of collagen.

0:29:49.880 --> 0:29:52.360
<v Speaker 3>One of the most common mutations is in fact a

0:29:52.480 --> 0:29:57.920
<v Speaker 3>null mutation that causes normal collagen production, but at half

0:29:58.200 --> 0:30:02.600
<v Speaker 3>the amount that is typical. Okay, so you can imagine

0:30:02.800 --> 0:30:06.800
<v Speaker 3>that collagen that is formed the way that it should

0:30:06.880 --> 0:30:11.600
<v Speaker 3>be has the same strength, but because you just have

0:30:11.840 --> 0:30:14.520
<v Speaker 3>less of it, the overall symptoms tend to be a

0:30:14.600 --> 0:30:18.640
<v Speaker 3>lot less severe. Okay, So this is often associated with

0:30:19.040 --> 0:30:24.160
<v Speaker 3>that old school classification of type one ostrogenesis imperfecta.

0:30:24.080 --> 0:30:28.760
<v Speaker 2>Right, right, And so just like going with the poll

0:30:28.840 --> 0:30:31.280
<v Speaker 2>and peel, because that is my framework for this, that

0:30:31.440 --> 0:30:34.520
<v Speaker 2>might be like a poll and peel in half, uh

0:30:34.640 --> 0:30:37.360
<v Speaker 2>huh essentially, or like half of the strands.

0:30:37.600 --> 0:30:37.719
<v Speaker 1>Right.

0:30:39.120 --> 0:30:41.880
<v Speaker 3>So, speaking of which, shall we talk about what the

0:30:41.920 --> 0:30:42.520
<v Speaker 3>symptoms are?

0:30:43.920 --> 0:30:44.040
<v Speaker 1>Right?

0:30:44.920 --> 0:30:47.800
<v Speaker 3>So I said already there's a really wide range of phenotypes,

0:30:47.840 --> 0:30:50.840
<v Speaker 3>but they all share a lot of things in common,

0:30:51.480 --> 0:30:58.280
<v Speaker 3>most notably fractures. Bones that break easily result in many

0:30:59.000 --> 0:31:04.400
<v Speaker 3>often fracture. In more severe cases, we can be talking

0:31:04.440 --> 0:31:10.240
<v Speaker 3>about dozens to even hundreds of fractures, even early in childhood.

0:31:11.800 --> 0:31:17.440
<v Speaker 3>Other really common findings are things like short stature, varying

0:31:17.640 --> 0:31:21.360
<v Speaker 3>degrees of bony deformity. So this could be things like

0:31:21.720 --> 0:31:25.680
<v Speaker 3>boeing of the bones of the legs, or curvatures in

0:31:25.760 --> 0:31:29.840
<v Speaker 3>the spine like scoliosis, or even curvatures in the bones

0:31:29.920 --> 0:31:33.920
<v Speaker 3>of the hand. And these types of changes can happen

0:31:34.320 --> 0:31:38.840
<v Speaker 3>both as a result of the bones themselves just not

0:31:39.040 --> 0:31:42.640
<v Speaker 3>being as structurally sound like not able to support the

0:31:42.760 --> 0:31:48.600
<v Speaker 3>weight of the body and from the fractures themselves and

0:31:48.680 --> 0:31:52.600
<v Speaker 3>the remodeling thereafter, especially when it comes to fractures in

0:31:52.720 --> 0:31:56.160
<v Speaker 3>the spine that can end up leading to scoliosis for example.

0:31:56.440 --> 0:31:57.200
<v Speaker 2>Okay, yeah.

0:31:58.640 --> 0:32:03.640
<v Speaker 3>Another really common fine in osteogenesis imperfecta is blue sclera,

0:32:04.040 --> 0:32:06.920
<v Speaker 3>so the whites of the eyes appearing blue, and this

0:32:07.120 --> 0:32:10.080
<v Speaker 3>is kind of described in a lot of medical textbooks

0:32:10.080 --> 0:32:15.240
<v Speaker 3>as one of those very classic osteogenesis imperfective findings. Importantly,

0:32:15.320 --> 0:32:18.360
<v Speaker 3>it can also sometimes be a normal finding in newborns,

0:32:19.440 --> 0:32:22.720
<v Speaker 3>but this is caused by thin scleral collagen, so the

0:32:22.840 --> 0:32:25.520
<v Speaker 3>collagen in the eye is just not as thick, so

0:32:25.640 --> 0:32:28.960
<v Speaker 3>then the underlying vasculature in our eyes is more prominent

0:32:29.040 --> 0:32:31.560
<v Speaker 3>because of that, so they appear blue like the whites

0:32:31.600 --> 0:32:35.880
<v Speaker 3>of the eyes. Hearing loss is another really common symptom.

0:32:36.320 --> 0:32:40.040
<v Speaker 3>It's not always present, and it's not always severe hearing

0:32:40.160 --> 0:32:44.720
<v Speaker 3>loss or complete hearing loss, but it often happens, especially

0:32:44.960 --> 0:32:48.360
<v Speaker 3>with time and by the time people reach adulthood, and

0:32:48.480 --> 0:32:51.960
<v Speaker 3>this can result either from damage to or disruption of

0:32:52.120 --> 0:32:55.240
<v Speaker 3>the bones in the middle ear and can result in

0:32:55.320 --> 0:32:59.840
<v Speaker 3>like really wide variation in degree of hearing loss, and

0:33:00.160 --> 0:33:07.760
<v Speaker 3>then dentinogenesis imperfecta, which dentin is your teeth. This is

0:33:07.800 --> 0:33:10.320
<v Speaker 3>something that can be found more commonly in the more

0:33:10.440 --> 0:33:15.320
<v Speaker 3>severe forms of ostrogenesis imperfecta. But it essentially is when teeth,

0:33:15.600 --> 0:33:19.360
<v Speaker 3>especially baby teeth, much more than adult teeth, which I

0:33:19.440 --> 0:33:22.160
<v Speaker 3>find very interesting and I don't have a great explanation for,

0:33:23.320 --> 0:33:28.120
<v Speaker 3>are not fully formed. They're small, and they often appear

0:33:28.320 --> 0:33:31.880
<v Speaker 3>either like yellow brown or gray blue, and they are

0:33:31.880 --> 0:33:35.200
<v Speaker 3>a lot weaker than a typical tooth or a typical

0:33:35.240 --> 0:33:39.760
<v Speaker 3>baby tooth even is so those are kind of the

0:33:39.960 --> 0:33:45.360
<v Speaker 3>main symptoms of all of the various forms of ostrogenesis imperfecta.

0:33:45.920 --> 0:33:50.840
<v Speaker 3>The degree to which this causes impairment either physical disability,

0:33:51.200 --> 0:33:56.320
<v Speaker 3>or leads to chronic illness really can vary. Some people

0:33:56.640 --> 0:34:00.600
<v Speaker 3>might not ever be diagnosed until adulthood, if at all,

0:34:01.320 --> 0:34:04.720
<v Speaker 3>where some people might be diagnosed in utero, and some

0:34:05.240 --> 0:34:10.200
<v Speaker 3>may not survive childhood because of how many problems they

0:34:10.280 --> 0:34:14.720
<v Speaker 3>end up having because of this, and there's everything in between.

0:34:15.920 --> 0:34:20.360
<v Speaker 3>And so can you give me some sort of example

0:34:20.680 --> 0:34:23.680
<v Speaker 3>for like the three points along the spectrum that you

0:34:23.880 --> 0:34:27.120
<v Speaker 3>just described, Yeah, in terms of like what the like,

0:34:27.239 --> 0:34:29.920
<v Speaker 3>what the mutation in the collagen is or how that

0:34:30.080 --> 0:34:34.799
<v Speaker 3>collagen is different or what is that collagen not doing,

0:34:35.480 --> 0:34:40.120
<v Speaker 3>So it really can depend. One of the papers that

0:34:40.320 --> 0:34:44.960
<v Speaker 3>I read that tried to propose a newer classification system

0:34:45.520 --> 0:34:49.720
<v Speaker 3>tried to break these down by the types of mutations,

0:34:50.040 --> 0:34:55.719
<v Speaker 3>and like the biochemistry, I guess of these mutations. I'll

0:34:55.760 --> 0:34:59.120
<v Speaker 3>be honest that I don't know how much traction this

0:34:59.480 --> 0:35:03.240
<v Speaker 3>classifiction system has gotten, because like on the NIH website,

0:35:03.280 --> 0:35:06.360
<v Speaker 3>for example, it still just says like nineteen different types

0:35:06.440 --> 0:35:10.279
<v Speaker 3>and so grains of salt and all. But it really

0:35:10.360 --> 0:35:14.800
<v Speaker 3>can vary. Some of the less severe phenotypes might just

0:35:15.000 --> 0:35:19.800
<v Speaker 3>be impairments in either the amount of collagen that's produced,

0:35:19.920 --> 0:35:22.759
<v Speaker 3>so like a null mutation where you're making half the

0:35:22.840 --> 0:35:28.160
<v Speaker 3>amount of collagen, but it's normal collagen otherwise, or mutations

0:35:28.280 --> 0:35:33.600
<v Speaker 3>that impair the ability of a normally formed collagen like

0:35:33.800 --> 0:35:37.560
<v Speaker 3>monomer to assemble down the line, so like just the

0:35:37.640 --> 0:35:43.320
<v Speaker 3>assembly part of it. Other more severe mutations might be

0:35:43.760 --> 0:35:49.799
<v Speaker 3>from genes that are involved in modifications of collagen more

0:35:49.920 --> 0:35:53.359
<v Speaker 3>down the line, like after the collagen is formed, now

0:35:53.480 --> 0:35:56.200
<v Speaker 3>it gets modified in a way that makes it really

0:35:56.280 --> 0:36:00.880
<v Speaker 3>structurally unsound. Okay, These tend to be less common and

0:36:01.000 --> 0:36:06.160
<v Speaker 3>are recessively inherited, so they're not autosomal dominant. There are

0:36:06.400 --> 0:36:10.319
<v Speaker 3>other mutations that could also be more severe that are

0:36:10.440 --> 0:36:14.000
<v Speaker 3>involved in the way that collagen folds and cross links.

0:36:14.760 --> 0:36:16.759
<v Speaker 3>Again like down the line, so like you have a

0:36:16.920 --> 0:36:20.120
<v Speaker 3>normal twizzler rope, but when you're trying to link a

0:36:20.120 --> 0:36:22.680
<v Speaker 3>whole bunch of those twizzler ropes together, it just doesn't

0:36:22.800 --> 0:36:27.640
<v Speaker 3>work correctly. So there's a huge variety.

0:36:27.800 --> 0:36:31.840
<v Speaker 2>And in terms of heritability, it's interesting to me that

0:36:32.400 --> 0:36:36.319
<v Speaker 2>most types seem to be autosomal dominant, but there are

0:36:36.320 --> 0:36:42.440
<v Speaker 2>a handful that are autosomal recessive. Which ones are which.

0:36:43.640 --> 0:36:47.600
<v Speaker 3>Yeah, that's a great question. So it is really interesting.

0:36:47.760 --> 0:36:50.360
<v Speaker 3>The autosomal dominant types, again are the ones that we

0:36:51.600 --> 0:36:54.440
<v Speaker 3>probably knew a lot more about and are historically the

0:36:54.520 --> 0:36:58.680
<v Speaker 3>ones most considered osteogenesis imperfecta. And those type one through fours,

0:37:00.080 --> 0:37:03.200
<v Speaker 3>those are the null mutations, and those are mutations that

0:37:03.480 --> 0:37:08.879
<v Speaker 3>can be in the collagen genes themselves, and so they

0:37:09.040 --> 0:37:14.120
<v Speaker 3>are impairing the assembly of those collagen fibrils and those

0:37:14.160 --> 0:37:20.760
<v Speaker 3>collagen strands. Even within that, there's huge amounts of variation

0:37:21.040 --> 0:37:25.400
<v Speaker 3>in terms of what the phenotype could be right, because

0:37:25.440 --> 0:37:27.680
<v Speaker 3>again that was like what we thought of when it

0:37:27.800 --> 0:37:30.279
<v Speaker 3>was just types one through four, which is anything from

0:37:30.440 --> 0:37:35.400
<v Speaker 3>relatively mild to perinatally lethal. But then there are so

0:37:35.680 --> 0:37:41.200
<v Speaker 3>many other recessive types that are more about mutations not

0:37:41.440 --> 0:37:45.600
<v Speaker 3>in the collagen genes themselves, but in the modifications of collagen,

0:37:46.080 --> 0:37:49.080
<v Speaker 3>in the cross linking of collagen, in the things that

0:37:49.160 --> 0:37:51.120
<v Speaker 3>happened down the line, where you would need to have

0:37:51.680 --> 0:37:56.640
<v Speaker 3>two of the mutator allele to actually have that phenotype right,

0:37:57.360 --> 0:38:00.520
<v Speaker 3>Whereas with the others, if there's a mutine in the

0:38:00.560 --> 0:38:04.920
<v Speaker 3>collagen gene itself, even if you make some typical collagen,

0:38:05.280 --> 0:38:08.480
<v Speaker 3>some proportion of your collagen is either abnormal or missing,

0:38:08.800 --> 0:38:11.280
<v Speaker 3>and therefore you have some symptoms of disease.

0:38:12.360 --> 0:38:17.360
<v Speaker 2>This might be an epidemiology question, okay, but what proportion

0:38:17.760 --> 0:38:23.600
<v Speaker 2>of cases of osteogenesis imperfecta are inherited versus which are

0:38:23.760 --> 0:38:25.280
<v Speaker 2>spontaneous mutation?

0:38:25.960 --> 0:38:30.440
<v Speaker 3>Oh, that is such a good question. I don't actually know.

0:38:30.760 --> 0:38:34.160
<v Speaker 3>I didn't really see that number anywhere, and I think

0:38:34.280 --> 0:38:37.640
<v Speaker 3>part of the reason is that most of the numbers

0:38:37.680 --> 0:38:40.520
<v Speaker 3>that I have are really just that eighty five to

0:38:40.719 --> 0:38:45.040
<v Speaker 3>ninety percent of cases are mutations in those two genes

0:38:45.440 --> 0:38:48.680
<v Speaker 3>that encode for type one collagen col one A one

0:38:48.760 --> 0:38:51.640
<v Speaker 3>and col one A two. Eighty five to ninety percent

0:38:52.200 --> 0:38:57.080
<v Speaker 3>of osteogenesis imperfecta is that that is autosomal dominant. The

0:38:57.280 --> 0:39:03.600
<v Speaker 3>rest are so variable that I don't know. I don't

0:39:03.680 --> 0:39:09.120
<v Speaker 3>know how many of them are denovo mutations versus genetic

0:39:09.200 --> 0:39:12.960
<v Speaker 3>within families. It's also so many of them, many have

0:39:13.080 --> 0:39:16.160
<v Speaker 3>been found in only one or a handful of patients,

0:39:16.680 --> 0:39:19.160
<v Speaker 3>and so they're so rare that it's really hard to

0:39:19.280 --> 0:39:22.640
<v Speaker 3>even know, especially with something that's autoso more recessive.

0:39:23.120 --> 0:39:28.319
<v Speaker 2>Right, Yeah, Okay, So we've talked about like the mutations,

0:39:28.360 --> 0:39:31.799
<v Speaker 2>We've talked about some of the different structures and disruptions

0:39:31.880 --> 0:39:36.520
<v Speaker 2>in collagen function or quantity or whatever, and we've talked

0:39:36.520 --> 0:39:39.920
<v Speaker 2>about some of the end results of that. What does

0:39:39.960 --> 0:39:44.080
<v Speaker 2>that mean for a lifetime, and also what does that

0:39:44.280 --> 0:39:47.719
<v Speaker 2>mean for the most severe type that you discussed, like

0:39:47.920 --> 0:39:51.320
<v Speaker 2>how why is it fatal?

0:39:52.000 --> 0:39:55.520
<v Speaker 3>Yeah? Yeah, So in terms of what does it mean

0:39:55.560 --> 0:39:59.560
<v Speaker 3>for a lifetime, it can vary hugely, But in terms

0:39:59.640 --> 0:40:05.840
<v Speaker 3>of when it is either lethal or results in severe disease,

0:40:06.800 --> 0:40:10.719
<v Speaker 3>some of the most severe manifestations come from its effects

0:40:11.320 --> 0:40:15.879
<v Speaker 3>on the bones in our torso and on our heart

0:40:16.000 --> 0:40:21.000
<v Speaker 3>and lungs itself or themselves In the cases of these

0:40:21.160 --> 0:40:25.960
<v Speaker 3>more severe disease manifestations, it's cardial pulmonary issues, heart and

0:40:26.080 --> 0:40:29.680
<v Speaker 3>lung issues that lead to the most severe morbidity and mortality.

0:40:30.360 --> 0:40:34.680
<v Speaker 3>So what we can see is recurrent lung infections like

0:40:34.840 --> 0:40:41.040
<v Speaker 3>pneumonia and eventual heart failure as a result of lung disease,

0:40:41.440 --> 0:40:45.360
<v Speaker 3>which is called core pulmoneal and this is very often

0:40:45.520 --> 0:40:50.239
<v Speaker 3>due not to problems in the lungs themselves, but skeletal

0:40:50.719 --> 0:40:56.640
<v Speaker 3>issues rib fractures, recurrent rib fractures, severe scoliosis, things that

0:40:56.840 --> 0:41:02.640
<v Speaker 3>eventually lead to dysfunction or the inbit to inspire appropriately

0:41:02.760 --> 0:41:06.240
<v Speaker 3>and to breathe enough so that then there is damage

0:41:06.280 --> 0:41:09.520
<v Speaker 3>to the lungs over time because of that, or in

0:41:09.640 --> 0:41:14.160
<v Speaker 3>some very severe cases it's respiratory failure in that perinatal

0:41:14.239 --> 0:41:17.880
<v Speaker 3>period because there's not enough structure to be able to

0:41:18.040 --> 0:41:25.080
<v Speaker 3>keep the lungs open, and because collagen also makes up

0:41:25.160 --> 0:41:28.960
<v Speaker 3>our vasculature. There can be independent issues that arise with

0:41:29.200 --> 0:41:33.560
<v Speaker 3>the cardiovascular system our heart, including like aortic root dilation,

0:41:33.920 --> 0:41:37.759
<v Speaker 3>so the part of your aorta that attaches to the

0:41:37.840 --> 0:41:40.320
<v Speaker 3>left ventricle of your heart getting a little bit dilated,

0:41:40.880 --> 0:41:45.600
<v Speaker 3>which leads to regurgitation or backflow of blood back into

0:41:45.680 --> 0:41:47.960
<v Speaker 3>our heart instead of making it out into the rest

0:41:48.000 --> 0:41:51.000
<v Speaker 3>of our body, which then leads to increased pressure in

0:41:51.080 --> 0:41:54.040
<v Speaker 3>the heart, which can also lead to heart failure down

0:41:54.080 --> 0:41:57.480
<v Speaker 3>the line. So those are some of the more severe

0:41:57.600 --> 0:42:01.760
<v Speaker 3>things that can happen as a result of this collagen issue,

0:42:01.960 --> 0:42:05.160
<v Speaker 3>both in our vasculature but also just in the bones

0:42:05.200 --> 0:42:12.520
<v Speaker 3>that make up our whole body. Yeah yeah, treatment, yeah,

0:42:13.600 --> 0:42:17.560
<v Speaker 3>across the board. The most important component of treatment is

0:42:17.719 --> 0:42:22.040
<v Speaker 3>actually physical therapy, so it's a lot about strengthening muscles

0:42:22.360 --> 0:42:27.480
<v Speaker 3>to protect these bones. The other component of treatment is

0:42:27.560 --> 0:42:34.040
<v Speaker 3>with medications, and we don't have great options yet, but

0:42:34.200 --> 0:42:38.160
<v Speaker 3>one really common group of medicines are called bisphosphonates. These

0:42:38.200 --> 0:42:40.880
<v Speaker 3>are the same medicines that we use to treat osteoporosis,

0:42:41.640 --> 0:42:45.279
<v Speaker 3>and what they do is help with bone deposition like mineralization,

0:42:45.560 --> 0:42:50.480
<v Speaker 3>and they decrease bone turnover. It's not fixing the problem,

0:42:50.840 --> 0:42:53.719
<v Speaker 3>especially if the problem is the way that the collagen

0:42:53.880 --> 0:42:58.840
<v Speaker 3>is formed, But the theory is that it helps strengthen

0:42:58.960 --> 0:43:02.399
<v Speaker 3>the bones, like put a cast kind of around your

0:43:02.880 --> 0:43:03.719
<v Speaker 3>noodle rope.

0:43:04.040 --> 0:43:04.320
<v Speaker 2>Okay.

0:43:05.640 --> 0:43:09.200
<v Speaker 3>The idea behind this is that it would then prevent fractures.

0:43:10.000 --> 0:43:12.680
<v Speaker 3>But apparently if you can't tell by how much I'm hedging,

0:43:13.400 --> 0:43:15.719
<v Speaker 3>the data is a little bit equivocal so far on

0:43:15.840 --> 0:43:18.080
<v Speaker 3>whether or not it actually prevents fractures.

0:43:18.320 --> 0:43:21.040
<v Speaker 2>Yeah, well, and I mean, honestly, like that kind of

0:43:21.200 --> 0:43:25.640
<v Speaker 2>makes sense given a huge variation in right different you

0:43:25.719 --> 0:43:29.840
<v Speaker 2>know ways that collagen can I don't know, not work

0:43:30.760 --> 0:43:31.480
<v Speaker 2>quite as well.

0:43:31.680 --> 0:43:35.120
<v Speaker 3>And so yeah, it's like, yeah, it's so it's just

0:43:35.280 --> 0:43:43.520
<v Speaker 3>such a huge array of possible symptoms and consequences resulting

0:43:43.680 --> 0:43:49.440
<v Speaker 3>from a huge array of mutations. So I won't be

0:43:49.560 --> 0:43:53.719
<v Speaker 3>surprised if someday all of these various classifications end up

0:43:53.800 --> 0:43:57.720
<v Speaker 3>being considered different diseases in some respects quite honestly.

0:43:58.040 --> 0:44:05.600
<v Speaker 2>Yeah, yeah, Aaron, I can't not ask, just I know

0:44:05.760 --> 0:44:08.440
<v Speaker 2>that we should do a whole episode on this someday.

0:44:09.239 --> 0:44:13.400
<v Speaker 2>But like, there are so many products out there with collagen.

0:44:13.760 --> 0:44:17.320
<v Speaker 2>Do you have like a TLDR that you can give me?

0:44:17.920 --> 0:44:21.879
<v Speaker 3>Oh, the easiest TLDR is that like you actually can't

0:44:21.920 --> 0:44:25.839
<v Speaker 3>absorb collagen through your GI tract, like it's too big.

0:44:27.000 --> 0:44:30.719
<v Speaker 3>So it's only like the either amino acids that make

0:44:30.800 --> 0:44:35.120
<v Speaker 3>up collagen or like I think it's like hydrolyzed collagen,

0:44:35.280 --> 0:44:37.439
<v Speaker 3>which is like what you probably take into powder. That's

0:44:37.480 --> 0:44:41.320
<v Speaker 3>like little teeny tiny bits of collagen in your collagen

0:44:41.360 --> 0:44:45.520
<v Speaker 3>powder that you might drink. There's like very mixed data

0:44:45.640 --> 0:44:48.800
<v Speaker 3>on whether or not it does anything to drink your collagen.

0:44:49.400 --> 0:44:52.520
<v Speaker 2>Okay, okay, but I would love.

0:44:52.400 --> 0:44:53.560
<v Speaker 3>To do a whole episode on it.

0:44:53.840 --> 0:44:56.400
<v Speaker 2>Let's do that, Let's do that and other supplements.

0:44:57.440 --> 0:44:59.640
<v Speaker 3>There's we could do it again, a whole mini series.

0:45:00.160 --> 0:45:02.760
<v Speaker 3>YEP added to the list.

0:45:03.920 --> 0:45:04.800
<v Speaker 2>Okay, interesting.

0:45:05.200 --> 0:45:08.719
<v Speaker 3>So speaking of interesting, Aaron, I don't think that I

0:45:08.760 --> 0:45:11.239
<v Speaker 3>can ask where did this come from? But like, how

0:45:11.280 --> 0:45:13.880
<v Speaker 3>did we get here when it comes to austun genesis?

0:45:13.920 --> 0:45:14.480
<v Speaker 3>Im perfect that.

0:45:15.480 --> 0:45:46.040
<v Speaker 2>Yeah, let's get into it right after this break. I

0:45:46.160 --> 0:45:49.240
<v Speaker 2>want to start off the history section with a quote.

0:45:49.600 --> 0:45:54.840
<v Speaker 2>Love that quote. One of the more frustrating endeavors for

0:45:54.960 --> 0:45:58.200
<v Speaker 2>those interested in the history of medicine can be the

0:45:58.360 --> 0:46:03.160
<v Speaker 2>desire to discover the first published description of a disease, operation,

0:46:03.480 --> 0:46:08.080
<v Speaker 2>or procedure. Having attempted this on several occasions, I have

0:46:08.280 --> 0:46:12.360
<v Speaker 2>concluded that it requires more than a large medical library,

0:46:12.600 --> 0:46:16.640
<v Speaker 2>a good memory, luck, perseverance, or a high degree of

0:46:16.719 --> 0:46:21.160
<v Speaker 2>suspicion for quoted sources, I am always left with the

0:46:21.280 --> 0:46:25.280
<v Speaker 2>uneasy feeling that only the personal perusal of the original

0:46:25.360 --> 0:46:30.000
<v Speaker 2>publication will convey the author's true thoughts. Meanings seem to

0:46:30.200 --> 0:46:34.160
<v Speaker 2>change in quoted sources and often contain errors in regard

0:46:34.239 --> 0:46:41.279
<v Speaker 2>to context, interpretation, translation, and bibliographic data. Osteogenesis Imperfecta is

0:46:41.360 --> 0:46:42.200
<v Speaker 2>a case in point.

0:46:45.000 --> 0:46:46.400
<v Speaker 3>So what you're saying is we don't know.

0:46:47.000 --> 0:46:52.400
<v Speaker 2>Yeah, that was the paragraph to say three words we

0:46:52.560 --> 0:46:58.520
<v Speaker 2>don't know. So that was from a paper titled Osteogenesis

0:46:58.600 --> 0:47:03.920
<v Speaker 2>Imperfecta Historical back by Ulric Hweel, MD, published in nineteen

0:47:04.000 --> 0:47:07.600
<v Speaker 2>eighty And when I read it, first of all, I

0:47:07.800 --> 0:47:10.960
<v Speaker 2>was like, this is an amazing quote. Also, I love

0:47:11.040 --> 0:47:15.400
<v Speaker 2>that this author devoted so much space to this sentiment.

0:47:15.800 --> 0:47:21.320
<v Speaker 2>That's great. But it's a great quote I thought to

0:47:21.719 --> 0:47:26.279
<v Speaker 2>begin the history of Osteogenesis imperfecta, And honestly, like many

0:47:26.360 --> 0:47:29.800
<v Speaker 2>it's applicable to many other topics that we've covered, because

0:47:29.800 --> 0:47:31.680
<v Speaker 2>I think it does sort of force us to think

0:47:31.719 --> 0:47:35.680
<v Speaker 2>about what is important when tracing the history of a

0:47:35.760 --> 0:47:39.680
<v Speaker 2>disease and why is it important? You know, is it

0:47:39.840 --> 0:47:43.400
<v Speaker 2>that doctor so and so was the first to name something? Maybe,

0:47:43.800 --> 0:47:46.880
<v Speaker 2>especially if you're that doctor so and so or related

0:47:47.000 --> 0:47:49.560
<v Speaker 2>to that doctor so and so, or is it the

0:47:49.840 --> 0:47:53.080
<v Speaker 2>order that things were discovered about a condition, or how

0:47:53.200 --> 0:47:56.800
<v Speaker 2>the timing of discoveries influence the perception of a disease

0:47:57.000 --> 0:48:01.200
<v Speaker 2>because of the current social or political climate, or how

0:48:01.239 --> 0:48:03.920
<v Speaker 2>the discovery of a condition altered the experience of those

0:48:03.960 --> 0:48:07.440
<v Speaker 2>who had it, or how the discovery changed medicine itself,

0:48:08.120 --> 0:48:10.160
<v Speaker 2>or maybe it's like a combination of all those things,

0:48:10.480 --> 0:48:13.160
<v Speaker 2>and it can be. And don't worry, this is not

0:48:13.719 --> 0:48:17.280
<v Speaker 2>going to be just a giant philosophical discussion or lecture

0:48:17.440 --> 0:48:21.000
<v Speaker 2>on how to construct a narrative on the history of medicine.

0:48:21.800 --> 0:48:24.680
<v Speaker 2>I just thought that this quote kind of served as

0:48:24.680 --> 0:48:28.040
<v Speaker 2>a good reminder that the stories that we tell are

0:48:28.200 --> 0:48:34.040
<v Speaker 2>exactly that their stories, and the storytellers themselves choose what

0:48:34.440 --> 0:48:37.400
<v Speaker 2>does or doesn't go into a story, and they're human.

0:48:37.719 --> 0:48:43.400
<v Speaker 2>We're human with biases and flaws and sometimes typos, oftentimes typos.

0:48:44.760 --> 0:48:48.960
<v Speaker 2>So what does that mean for osteogenesis imperfecta. It means

0:48:49.480 --> 0:48:52.560
<v Speaker 2>that what I want to focus mostly on today is

0:48:52.719 --> 0:48:56.840
<v Speaker 2>not who gets priority for the first description of this disorder,

0:48:57.800 --> 0:49:01.680
<v Speaker 2>but how our understanding of it has grown over time

0:49:01.960 --> 0:49:04.400
<v Speaker 2>and what that is meant for the people living with

0:49:04.640 --> 0:49:10.200
<v Speaker 2>this disease, especially as the divide between knowledge and application

0:49:11.000 --> 0:49:17.759
<v Speaker 2>has shrunk, but like not entirely at all. Okay, so

0:49:17.960 --> 0:49:21.120
<v Speaker 2>let's get started with this history by heading back, as

0:49:21.239 --> 0:49:27.719
<v Speaker 2>we often do, to ancient Egypt. Since osteogenesis imperfecta is associated,

0:49:27.800 --> 0:49:31.840
<v Speaker 2>of course with skeletal changes, we can make fairly confident

0:49:32.000 --> 0:49:36.400
<v Speaker 2>diagnoses in skeletal remains that have evidence of the disease,

0:49:37.200 --> 0:49:39.600
<v Speaker 2>and the earliest of these that I came across is

0:49:39.680 --> 0:49:43.480
<v Speaker 2>from an ancient Egyptian mummy, an infant from around one

0:49:43.600 --> 0:49:48.200
<v Speaker 2>thousand BCE. The infant's skull and bones were consistent with

0:49:48.320 --> 0:49:54.120
<v Speaker 2>osteogenesis imperfecta, specifically types three and four. I think there

0:49:54.480 --> 0:49:58.600
<v Speaker 2>couldn't distinguish between those two. But from what I can tell,

0:49:59.200 --> 0:50:04.440
<v Speaker 2>there aren't references to osteogenesis imperfecta in any ancient texts,

0:50:05.080 --> 0:50:08.200
<v Speaker 2>or at least any that aren't like incredibly vague, and

0:50:08.280 --> 0:50:10.120
<v Speaker 2>which I thought was kind of interesting.

0:50:10.560 --> 0:50:14.319
<v Speaker 3>That is because it's, yeah, I mean, bones are often

0:50:14.400 --> 0:50:19.160
<v Speaker 3>what we look to to see about so many other diseases,

0:50:19.239 --> 0:50:21.440
<v Speaker 3>and so it's it is interesting.

0:50:21.160 --> 0:50:26.120
<v Speaker 2>It is it is, And also like what proportion of

0:50:27.120 --> 0:50:31.160
<v Speaker 2>medical writings from ancient from the ancient world remains today?

0:50:31.960 --> 0:50:35.000
<v Speaker 2>What is still waiting to be translated et cetera. Like

0:50:35.120 --> 0:50:37.240
<v Speaker 2>you know, it's I'm not saying that they don't exist.

0:50:37.320 --> 0:50:40.320
<v Speaker 2>It's just that a I didn't read about them, be

0:50:40.640 --> 0:50:41.839
<v Speaker 2>no one's read about them yet.

0:50:41.960 --> 0:50:42.320
<v Speaker 3>I don't know.

0:50:43.040 --> 0:50:47.120
<v Speaker 2>It could be both. But there is a legendary figure

0:50:47.320 --> 0:50:50.880
<v Speaker 2>from the ninth century CE that has been said to

0:50:50.960 --> 0:50:58.160
<v Speaker 2>have osteogenesis imperfecta Ivar the Boneless, who sometimes translated as Ivar.

0:50:58.320 --> 0:51:01.360
<v Speaker 2>I hope it's Ivar or not Evar. Ivar the Legless.

0:51:02.400 --> 0:51:06.440
<v Speaker 2>Ivar the Boneless was a Viking king slash leader slash

0:51:06.600 --> 0:51:10.480
<v Speaker 2>person of importance who I couldn't get a handle on

0:51:10.840 --> 0:51:16.000
<v Speaker 2>what position he held, but in any case, he makes

0:51:16.040 --> 0:51:19.200
<v Speaker 2>an appearance in the thirteenth century epic poem The Tale

0:51:19.320 --> 0:51:23.400
<v Speaker 2>of Ragnar Lodbrook. He was the son of Ragnar, and

0:51:23.520 --> 0:51:26.520
<v Speaker 2>in this poem is the story of how Ivar travels

0:51:26.560 --> 0:51:30.399
<v Speaker 2>to East Anglia and Northumbria to avenge his father, who

0:51:30.480 --> 0:51:34.520
<v Speaker 2>was murdered by the King of Northumberland. He was successful,

0:51:35.120 --> 0:51:38.640
<v Speaker 2>allegedly killing the king a Ella in a horrible way

0:51:38.880 --> 0:51:39.640
<v Speaker 2>the Blood Eagle.

0:51:40.640 --> 0:51:42.120
<v Speaker 3>Maybe read about it, maybe don't.

0:51:43.200 --> 0:51:48.520
<v Speaker 2>Ultimately, Ivar dies in Dublin peacefully in the year eight

0:51:48.680 --> 0:51:53.160
<v Speaker 2>seventy three before he died, he instructed that his body

0:51:53.200 --> 0:51:55.640
<v Speaker 2>should be buried in a mound on the east coast

0:51:55.680 --> 0:51:59.560
<v Speaker 2>of England, saying that as long as his grave was undisturbed,

0:52:00.120 --> 0:52:04.560
<v Speaker 2>no invasion of England would be successful, and that apparently

0:52:04.640 --> 0:52:07.359
<v Speaker 2>held true until William the Conqueror landed there in ten

0:52:07.480 --> 0:52:11.480
<v Speaker 2>sixty six and burned Ivar's remains. Just a fun little

0:52:11.520 --> 0:52:14.880
<v Speaker 2>story that has nothing to do. That's just mostly backstory

0:52:15.040 --> 0:52:20.239
<v Speaker 2>on this guy Ivar, Okay, And because we don't know

0:52:20.680 --> 0:52:23.640
<v Speaker 2>where Ivar was buried or if he existed at all

0:52:23.840 --> 0:52:26.280
<v Speaker 2>or was just like a composite figure in this poem.

0:52:27.040 --> 0:52:29.560
<v Speaker 2>But if he did exist, his body was possibly burned,

0:52:29.640 --> 0:52:32.759
<v Speaker 2>So like we can't make a, you know, a diagnosis

0:52:32.800 --> 0:52:35.840
<v Speaker 2>based on his remains. We can't know whether or not

0:52:36.000 --> 0:52:40.400
<v Speaker 2>he had osteogenesis imperfecta. Ivar's mother was said to be

0:52:40.520 --> 0:52:42.800
<v Speaker 2>cursed while she was pregnant with him, and he was

0:52:42.920 --> 0:52:45.640
<v Speaker 2>unable to walk and was carried on a shield into

0:52:45.719 --> 0:52:49.840
<v Speaker 2>battle where he would use a long bow, So maybe

0:52:49.920 --> 0:52:50.920
<v Speaker 2>he had OI.

0:52:51.760 --> 0:52:55.440
<v Speaker 3>But another explanation for his name that some authors suggest

0:52:55.800 --> 0:53:00.520
<v Speaker 3>was that it was an insult, suggesting that he wasn't

0:53:00.640 --> 0:53:03.120
<v Speaker 3>really up to the task.

0:53:04.480 --> 0:53:05.360
<v Speaker 2>In certain ways.

0:53:08.600 --> 0:53:10.960
<v Speaker 3>But it was just that he couldn't walk, that's the

0:53:11.080 --> 0:53:14.720
<v Speaker 3>only Yeah, oh interesting.

0:53:14.520 --> 0:53:14.719
<v Speaker 1>I know.

0:53:14.920 --> 0:53:19.040
<v Speaker 2>So this is what, like, the amount of conjecture that

0:53:19.280 --> 0:53:21.920
<v Speaker 2>comes out of some of these early histories of.

0:53:22.000 --> 0:53:29.840
<v Speaker 3>Diseases is simply staggering. Yeah, yeah, and we're.

0:53:29.400 --> 0:53:32.000
<v Speaker 2>Never gonna know. Yeah, but I did want to mention

0:53:32.160 --> 0:53:35.720
<v Speaker 2>him because his name comes up in like every history

0:53:36.280 --> 0:53:40.680
<v Speaker 2>of osteogenesis imperfecta more or less. And there are a

0:53:40.719 --> 0:53:44.839
<v Speaker 2>few other possible references to what could be osteogenesis imperfecta

0:53:45.000 --> 0:53:49.120
<v Speaker 2>in like ancient and medieval times, but very much in

0:53:49.360 --> 0:53:52.800
<v Speaker 2>theme with the quote at the beginning. The original ancient

0:53:53.000 --> 0:53:56.040
<v Speaker 2>source can't be found, or it's been mistranslated or whatever,

0:53:56.280 --> 0:54:01.000
<v Speaker 2>so let's move on to the seventeenth century. That is

0:54:01.239 --> 0:54:03.560
<v Speaker 2>where we have to go from here, and that's when

0:54:03.600 --> 0:54:07.320
<v Speaker 2>the next possible reference to ostrogenesis improvecta shows up in

0:54:07.480 --> 0:54:13.000
<v Speaker 2>France in sixteen seventy five, from the philosopher Nicholas D. Malibranche,

0:54:13.120 --> 0:54:17.440
<v Speaker 2>who wrote that quote. About seven or eight years ago.

0:54:18.000 --> 0:54:20.920
<v Speaker 2>A young man could be seen at the Incurable's hospital

0:54:21.040 --> 0:54:23.560
<v Speaker 2>who was born mad and whose body was broken in

0:54:23.640 --> 0:54:27.600
<v Speaker 2>the same places as murderer's bones are broken. He lived

0:54:27.680 --> 0:54:30.960
<v Speaker 2>for about twenty years in this condition. Several people saw him,

0:54:31.000 --> 0:54:33.239
<v Speaker 2>and the late queen mother, when paying a visit to

0:54:33.320 --> 0:54:36.440
<v Speaker 2>this hospital, was curious to see him and even to

0:54:36.600 --> 0:54:39.160
<v Speaker 2>touch the arms and legs of that young man where

0:54:39.200 --> 0:54:40.200
<v Speaker 2>his limbs were broken.

0:54:41.160 --> 0:54:41.720
<v Speaker 1>End quote.

0:54:43.280 --> 0:54:47.439
<v Speaker 2>Des Malabranche then provided his reasoning for why this man

0:54:47.880 --> 0:54:48.720
<v Speaker 2>had this condition.

0:54:49.480 --> 0:54:49.840
<v Speaker 3>Quote.

0:54:50.760 --> 0:54:53.400
<v Speaker 2>The cause of this terrible accident was the fact that

0:54:53.560 --> 0:54:56.160
<v Speaker 2>the mother, having heard that a criminal was to be

0:54:56.239 --> 0:55:00.359
<v Speaker 2>put on the wheel, went to see the execution. All

0:55:00.480 --> 0:55:03.279
<v Speaker 2>the blows that were given to that wretch struck the

0:55:03.360 --> 0:55:07.400
<v Speaker 2>imagination of that mother forcefully, and as an indirect consequence,

0:55:07.640 --> 0:55:09.960
<v Speaker 2>the tender and delicate brain of her child.

0:55:10.600 --> 0:55:11.120
<v Speaker 1>End quote.

0:55:12.680 --> 0:55:20.120
<v Speaker 2>Sorry, what so, Yeah, he is not even like suggesting,

0:55:20.280 --> 0:55:25.959
<v Speaker 2>but just like stating very firmly that this guy's mother,

0:55:26.320 --> 0:55:31.600
<v Speaker 2>who when pregnant with him, saw this public execution, and

0:55:31.760 --> 0:55:36.400
<v Speaker 2>that every blow that landed on the guy who was

0:55:36.480 --> 0:55:40.480
<v Speaker 2>on the wheel that the person put to death. Then

0:55:40.880 --> 0:55:44.120
<v Speaker 2>when he was born he later had breaks in all

0:55:44.200 --> 0:55:46.840
<v Speaker 2>the same It sounds it not.

0:55:46.960 --> 0:55:51.439
<v Speaker 3>Only makes no sense, it also why does it sound

0:55:51.520 --> 0:55:56.920
<v Speaker 3>weirdly familiar? Oh? I think epilepsy was a lot about

0:55:57.120 --> 0:56:00.560
<v Speaker 3>when someone was pregnant and they witnessed something thing, and

0:56:00.680 --> 0:56:03.960
<v Speaker 3>then I think it was epilepsy and that sounds familiar.

0:56:04.120 --> 0:56:06.120
<v Speaker 2>I mean to be honest, Aaron, we know that it's

0:56:06.120 --> 0:56:08.480
<v Speaker 2>going to be a thousand different things, right, like, yeah,

0:56:09.120 --> 0:56:12.160
<v Speaker 2>anything that you can blame a woman for.

0:56:13.000 --> 0:56:15.680
<v Speaker 3>Yeah, yeah, it's always mom's fault.

0:56:15.920 --> 0:56:16.120
<v Speaker 1>Yeah.

0:56:18.239 --> 0:56:24.400
<v Speaker 2>Yeah, it doesn't make any sense. The next reference to

0:56:24.600 --> 0:56:29.400
<v Speaker 2>what is likely osteogenesis imperfecta was written with slightly less

0:56:29.640 --> 0:56:33.200
<v Speaker 2>conviction about what caused it. Okay, This is from a

0:56:33.280 --> 0:56:39.040
<v Speaker 2>medical report from France in sixteen ninety quote. On March eighth,

0:56:39.280 --> 0:56:42.600
<v Speaker 2>sixteen ninety, a woman in her late twenties was admitted

0:56:42.640 --> 0:56:46.560
<v Speaker 2>to the Hotel Due in Paris. She complained that over

0:56:46.600 --> 0:56:50.440
<v Speaker 2>the past four months she had suffered extreme and diffuse

0:56:50.560 --> 0:56:54.520
<v Speaker 2>pain all over the body, with no apparent feverish episode.

0:56:55.120 --> 0:56:58.520
<v Speaker 2>Although she could walk and move without restriction, she suffered

0:56:58.719 --> 0:57:03.360
<v Speaker 2>unbearable pain anyone touched her. After three months of forced

0:57:03.400 --> 0:57:07.080
<v Speaker 2>bed rest, she could no longer walk, All bones fragmented

0:57:07.200 --> 0:57:10.440
<v Speaker 2>and it was impossible to touch her without causing new fractures.

0:57:11.280 --> 0:57:16.000
<v Speaker 2>The pain increased progressively until she died. On dissection, we

0:57:16.200 --> 0:57:20.000
<v Speaker 2>found that the upper and lower limb bones, clavicles, ribs,

0:57:20.240 --> 0:57:24.200
<v Speaker 2>vertebrae and the pelvis were broken. Not a single unbroken

0:57:24.280 --> 0:57:28.000
<v Speaker 2>bone was found. The bones were thin, tender, and full

0:57:28.040 --> 0:57:32.640
<v Speaker 2>of red marrow. Upon manipulation, they pulverized and dissolved like

0:57:32.720 --> 0:57:36.400
<v Speaker 2>a rotten, wet tree bark. We could sink our fingers

0:57:36.480 --> 0:57:39.600
<v Speaker 2>into her skull bones, the consistency of which was similar

0:57:39.640 --> 0:57:43.560
<v Speaker 2>to that found in a fifteen day old neonate. Cartilages

0:57:43.640 --> 0:57:48.080
<v Speaker 2>and articulations showed no sign of alteration. The internal organs

0:57:48.120 --> 0:57:51.040
<v Speaker 2>were healthy, and no other signs of her pathological condition

0:57:51.240 --> 0:57:55.680
<v Speaker 2>were found. It is known that smallpox can cause bony erosion,

0:57:56.000 --> 0:57:58.960
<v Speaker 2>but in this case, the bones were melted and softened.

0:57:59.640 --> 0:58:02.240
<v Speaker 2>What was the cause and nature of their dissolution?

0:58:03.360 --> 0:58:10.600
<v Speaker 3>End quote? Wow, Yeah, that's it's a pretty it's a

0:58:10.640 --> 0:58:15.200
<v Speaker 3>pretty gnarly description. Yeah. Yeah, that is a sounds like

0:58:15.280 --> 0:58:17.240
<v Speaker 3>a very severe form.

0:58:18.080 --> 0:58:21.960
<v Speaker 2>What struck me about this was the mention of pain,

0:58:22.280 --> 0:58:25.400
<v Speaker 2>because you didn't really talk about pain very much. But

0:58:25.720 --> 0:58:29.080
<v Speaker 2>is pain a major feature of some of these different

0:58:29.600 --> 0:58:31.480
<v Speaker 2>types of ostrogenesism perfecta?

0:58:31.840 --> 0:58:37.200
<v Speaker 3>I mean certainly yes, especially because these fractures are painful,

0:58:37.320 --> 0:58:40.880
<v Speaker 3>like breaking a bone is incredibly painful. So it's not

0:58:41.360 --> 0:58:46.840
<v Speaker 3>that this disruption in collagen disrupts in any way all

0:58:47.160 --> 0:58:50.600
<v Speaker 3>of the nerves and everything else that's involved. So the

0:58:50.680 --> 0:58:54.000
<v Speaker 3>fractures themselves are going to be painful. The way that

0:58:54.120 --> 0:58:58.480
<v Speaker 3>bones heel might lead to additional kind of damage down

0:58:58.480 --> 0:59:00.560
<v Speaker 3>the line, like we talked with the school osis and

0:59:00.640 --> 0:59:04.520
<v Speaker 3>things like that, which can be painful. So certainly pain

0:59:04.640 --> 0:59:07.800
<v Speaker 3>can be a component of osteogenesis imperfect at Okay.

0:59:08.000 --> 0:59:14.440
<v Speaker 2>Yeah, okay, Well anyway, so still traveling through these early mentions,

0:59:14.720 --> 0:59:19.000
<v Speaker 2>there is sometimes people mentioned someone named Armand as providing

0:59:19.080 --> 0:59:23.400
<v Speaker 2>the next description of OI in seventeen sixteen, but I

0:59:23.520 --> 0:59:26.320
<v Speaker 2>didn't really find any more about that, Like that was it.

0:59:27.440 --> 0:59:32.440
<v Speaker 2>Then we have the dissertation of Swedish surgeon Olaus jakab Eckmann,

0:59:32.960 --> 0:59:36.840
<v Speaker 2>published in seventeen eighty eight, which had previously been considered

0:59:36.880 --> 0:59:41.160
<v Speaker 2>the first scientific description of the disease, even though he

0:59:41.440 --> 0:59:46.360
<v Speaker 2>considered them to be cases of osteomalaysia that ran in families.

0:59:47.200 --> 0:59:50.400
<v Speaker 2>So he described four generations living in a mining district

0:59:50.520 --> 0:59:54.919
<v Speaker 2>with bony disorders resulting in disability, but he just thought

0:59:54.960 --> 0:59:56.320
<v Speaker 2>that it was Osteomalaysia.

0:59:56.440 --> 0:59:59.640
<v Speaker 3>Yeah, yeah, that is interesting because ricketts, which we already

0:59:59.680 --> 1:00:04.040
<v Speaker 3>did this sees it and scurvy are all definitely on

1:00:04.200 --> 1:00:08.240
<v Speaker 3>the differential, that is, when it comes to osteogenesis imperfected.

1:00:08.480 --> 1:00:12.600
<v Speaker 2>Yeah, yeah, But are you seeing how the quote at

1:00:12.600 --> 1:00:16.440
<v Speaker 2>the beginning is like so relevant because and then and

1:00:16.480 --> 1:00:18.800
<v Speaker 2>then there's this, and then like there are so many

1:00:19.440 --> 1:00:23.800
<v Speaker 2>different instances of the first description of this and that. Anyway, personally,

1:00:23.920 --> 1:00:26.880
<v Speaker 2>what I think is that the first description that really

1:00:27.000 --> 1:00:30.720
<v Speaker 2>matters is the one from Edmund AxMan in eighteen thirty one,

1:00:31.440 --> 1:00:34.400
<v Speaker 2>where he describes for the first time the four major

1:00:34.480 --> 1:00:41.200
<v Speaker 2>characteristics of osteogenesis imperfecta bone fragility, joint hypermobility with easy dislocation,

1:00:41.680 --> 1:00:46.640
<v Speaker 2>blue sclera, and a frail body. A couple of years later,

1:00:46.800 --> 1:00:52.960
<v Speaker 2>Lobstein described a condition he called osteosatherosis idiopathica, an abnormal

1:00:53.040 --> 1:00:58.520
<v Speaker 2>brittleness of bones, particularly afflicting children and the elderly, also

1:00:58.640 --> 1:01:01.600
<v Speaker 2>mentioning that it can run in family. It's unclear whether

1:01:01.680 --> 1:01:05.320
<v Speaker 2>he was actually talking about like a combination of osteoporosis

1:01:05.400 --> 1:01:10.440
<v Speaker 2>and rickets or actually OI. And so at this point

1:01:11.160 --> 1:01:15.440
<v Speaker 2>we have okay, we don't have a complete clinical clear picture,

1:01:16.280 --> 1:01:21.120
<v Speaker 2>but we have now gotten like a distinct condition. So

1:01:21.400 --> 1:01:23.880
<v Speaker 2>this is not just like a symptom that people are

1:01:23.960 --> 1:01:27.720
<v Speaker 2>talking about this is a collection of symptoms, there are

1:01:27.800 --> 1:01:32.520
<v Speaker 2>recognizable features, and that makes diagnosis a possibility by around

1:01:32.560 --> 1:01:36.280
<v Speaker 2>like the first half of the nineteenth century, but like

1:01:36.360 --> 1:01:40.520
<v Speaker 2>a diagnosis of what, because what we now know is

1:01:40.560 --> 1:01:45.480
<v Speaker 2>osteogenesis imperfecta didn't yet have that name, right, So how

1:01:45.520 --> 1:01:51.320
<v Speaker 2>did that happen? Gerardis Vrolik was a professor of anatomy

1:01:51.360 --> 1:01:55.800
<v Speaker 2>and physiology and of theoretical and clinical obstetrics at the

1:01:55.920 --> 1:01:59.000
<v Speaker 2>University of Amsterdam in the early nineteenth century.

1:02:00.000 --> 1:02:01.960
<v Speaker 3>What is theoretical obstetrics?

1:02:02.200 --> 1:02:06.240
<v Speaker 2>It's just imagining how everything happens.

1:02:06.520 --> 1:02:09.600
<v Speaker 3>Okay, cool, Yeah, Okay.

1:02:09.840 --> 1:02:16.960
<v Speaker 2>Malpractice insurance is very low. That's my dorkiest joke yet.

1:02:17.360 --> 1:02:18.840
<v Speaker 3>I really liked it, thank you.

1:02:21.400 --> 1:02:24.560
<v Speaker 2>As if anyone needed malpractice insurance in the nineteenth century.

1:02:25.160 --> 1:02:25.360
<v Speaker 1>Yeah.

1:02:26.080 --> 1:02:30.200
<v Speaker 2>One of Rolick's special interests was congenital disorders, and that

1:02:30.320 --> 1:02:32.880
<v Speaker 2>was a topic that was very popular at the time.

1:02:33.360 --> 1:02:36.000
<v Speaker 2>I saw it described in one paper as the golden

1:02:36.080 --> 1:02:43.040
<v Speaker 2>era of descriptive territology. Anyway, Rolick, in addition to publishing

1:02:43.160 --> 1:02:45.760
<v Speaker 2>case studies of some of the congenital disorders that he

1:02:45.880 --> 1:02:49.960
<v Speaker 2>treated or came across, he also began a private collection

1:02:50.200 --> 1:02:53.120
<v Speaker 2>of specimens humans and other animals.

1:02:53.800 --> 1:02:56.000
<v Speaker 3>That sounds witionable.

1:02:56.400 --> 1:03:00.760
<v Speaker 2>Yeah, I think it still exists. His son, who was

1:03:00.880 --> 1:03:04.800
<v Speaker 2>also a physician with an interest in congenital disorders, inherited

1:03:04.880 --> 1:03:09.080
<v Speaker 2>this collection after his father's death and studied it. One

1:03:09.160 --> 1:03:11.880
<v Speaker 2>of the samples that he came across and found worthy

1:03:11.960 --> 1:03:15.520
<v Speaker 2>of description was the skeleton of an infant that had

1:03:15.600 --> 1:03:20.640
<v Speaker 2>died three days after birth with numerous fractures. Willem dissected

1:03:20.680 --> 1:03:23.680
<v Speaker 2>the skeleton and found that there were fractures in every

1:03:23.760 --> 1:03:27.600
<v Speaker 2>intact bone. The skull, large and with a high forehead,

1:03:27.800 --> 1:03:31.840
<v Speaker 2>was fractured, the ribs were very thin, and development overall

1:03:32.000 --> 1:03:36.840
<v Speaker 2>seemed incomplete. In eighteen forty nine, he published his description

1:03:37.160 --> 1:03:40.320
<v Speaker 2>and his belief that the infant had a condition he

1:03:40.640 --> 1:03:46.760
<v Speaker 2>termed osteogenesis imperfecta, stating that he believed, unlike most of

1:03:46.880 --> 1:03:50.040
<v Speaker 2>his contemporaries, that it was a condition that the infant

1:03:50.120 --> 1:03:53.480
<v Speaker 2>had been born with, rather than something they had acquired

1:03:53.560 --> 1:03:58.360
<v Speaker 2>after birth, as in Rickets. Later re examination of the

1:03:58.400 --> 1:04:01.640
<v Speaker 2>skeleton in the nineteen nineties led to the diagnosis of

1:04:01.880 --> 1:04:07.280
<v Speaker 2>osteogenesis imperfecta type two. Over the second half of the

1:04:07.360 --> 1:04:11.200
<v Speaker 2>eighteen hundreds and into the early nineteen hundreds, more observations

1:04:11.240 --> 1:04:13.880
<v Speaker 2>trickled in some that seemed to be more or less

1:04:13.920 --> 1:04:17.440
<v Speaker 2>a repetition of what had already been published, and others

1:04:17.480 --> 1:04:20.440
<v Speaker 2>that added a bit more detail to the overall clinical picture,

1:04:20.880 --> 1:04:25.280
<v Speaker 2>like Spurway in eighteen ninety six reporting on how bluish

1:04:25.320 --> 1:04:29.800
<v Speaker 2>sclera sometimes happened in association with brittle bones, which was

1:04:29.880 --> 1:04:33.680
<v Speaker 2>then repeated and elaborated on by Edo's in nineteen hundred,

1:04:33.840 --> 1:04:39.200
<v Speaker 2>who hypothesized that quote, the transparency of the sclerotics indicates

1:04:39.360 --> 1:04:42.680
<v Speaker 2>a want of the quality or quantity of the fibrous

1:04:42.760 --> 1:04:46.200
<v Speaker 2>tissue forming the network of the various organs of the body,

1:04:46.640 --> 1:04:50.080
<v Speaker 2>and probably explains the want of spring or toughness in

1:04:50.160 --> 1:04:52.200
<v Speaker 2>the bones of these particular individuals.

1:04:52.720 --> 1:04:53.200
<v Speaker 1>End quote.

1:04:53.600 --> 1:04:55.280
<v Speaker 3>Great, great job led it.

1:04:55.800 --> 1:04:59.160
<v Speaker 2>Honestly, pretty impressive.

1:05:00.080 --> 1:05:00.400
<v Speaker 3>Solid.

1:05:00.680 --> 1:05:06.040
<v Speaker 2>Yeah. Other researchers noted that coreticonus, like where the cornea

1:05:06.160 --> 1:05:09.320
<v Speaker 2>gets thinner and kind of bulges out in the center

1:05:09.480 --> 1:05:14.520
<v Speaker 2>like a cone, also sometimes occurred with bone fragility, with

1:05:14.760 --> 1:05:19.320
<v Speaker 2>at least one researcher noting the hereditary nature of the condition.

1:05:20.880 --> 1:05:24.720
<v Speaker 2>Hereditary hearing loss associated with brittle bones and blue sclera

1:05:25.320 --> 1:05:28.280
<v Speaker 2>was described for possibly the first time in nineteen twelve

1:05:28.560 --> 1:05:32.840
<v Speaker 2>in a paper titled four Generations of Blue Sclerotics by

1:05:32.920 --> 1:05:38.240
<v Speaker 2>British ophthalmologists and Ian T. Charles Allen Adair Dighton, And

1:05:38.360 --> 1:05:41.760
<v Speaker 2>this observation was repeated by others shortly after, and so

1:05:41.960 --> 1:05:44.760
<v Speaker 2>like this is just I felt like a list a

1:05:44.880 --> 1:05:48.120
<v Speaker 2>bunch of people who described a bunch of different things.

1:05:48.840 --> 1:05:53.000
<v Speaker 2>And I feel like doing this episode right after Parkinson's

1:05:53.320 --> 1:05:57.440
<v Speaker 2>made me realize how comparatively rare, or at the very

1:05:57.560 --> 1:06:01.880
<v Speaker 2>least different the history of Parkinson's was, where there seemed

1:06:01.920 --> 1:06:05.520
<v Speaker 2>to be like one landmark paper picked up by one

1:06:05.760 --> 1:06:10.120
<v Speaker 2>landmark scientist, and then everything grew from there. Yeah, for

1:06:10.280 --> 1:06:14.960
<v Speaker 2>osteogenesis imperfecta, it has seemed like centuries of incremental progress

1:06:15.160 --> 1:06:19.080
<v Speaker 2>and repetition, you know, like dozens of people coming in

1:06:19.280 --> 1:06:23.360
<v Speaker 2>and putting one piece of this thousand piece puzzle together

1:06:23.640 --> 1:06:24.880
<v Speaker 2>time after time after time.

1:06:25.480 --> 1:06:28.080
<v Speaker 3>Yeah. I mean I wonder if that reflects not only

1:06:29.560 --> 1:06:33.800
<v Speaker 3>how variable osteogenesis imperfect it can be, but also how

1:06:33.920 --> 1:06:37.600
<v Speaker 3>much more rare it is comparatively absolutely.

1:06:37.480 --> 1:06:40.040
<v Speaker 2>And also like the way the story is told right,

1:06:40.280 --> 1:06:42.880
<v Speaker 2>like maybe I could have been like and then in

1:06:43.080 --> 1:06:47.160
<v Speaker 2>eighteen ninety six we had this example of whatever you know,

1:06:49.320 --> 1:06:53.160
<v Speaker 2>and then everything came from there. But I think I

1:06:53.200 --> 1:06:55.680
<v Speaker 2>think this is a good representation of how most science

1:06:55.800 --> 1:06:59.480
<v Speaker 2>does actually happen right where it's not like it certainly

1:06:59.560 --> 1:07:04.040
<v Speaker 2>can happen the way that Parkinson's, the history of Parkinson's did. Right,

1:07:04.240 --> 1:07:07.959
<v Speaker 2>here's this one thing, WHOA that opened up this door

1:07:08.120 --> 1:07:10.920
<v Speaker 2>to tons and tons of research. A lot of the

1:07:10.960 --> 1:07:13.760
<v Speaker 2>time is it is this incremental progress. It is this

1:07:14.000 --> 1:07:16.960
<v Speaker 2>like slight, you know, shedding a light and the light

1:07:17.040 --> 1:07:19.120
<v Speaker 2>gets brighter and brighter and brighter and hits a wider

1:07:19.200 --> 1:07:20.280
<v Speaker 2>and wider area.

1:07:20.640 --> 1:07:24.120
<v Speaker 3>And sometimes the light doesn't change. But it's just I

1:07:24.160 --> 1:07:26.720
<v Speaker 3>don't know. I thought that was interesting.

1:07:28.200 --> 1:07:32.080
<v Speaker 2>Okay, Anyway, with osteogenesis imperfecta, we've made it into the

1:07:32.120 --> 1:07:36.480
<v Speaker 2>twentieth century and we have a general clinical description of

1:07:36.800 --> 1:07:40.320
<v Speaker 2>this disorder. We have a typing system, not the one

1:07:40.360 --> 1:07:43.040
<v Speaker 2>we use today, not even the one that we used

1:07:43.360 --> 1:07:45.880
<v Speaker 2>that you mentioned that was historical. We had one that

1:07:46.080 --> 1:07:50.000
<v Speaker 2>was like, here's osteogenesis imperfecta inherited, and here's where it

1:07:50.120 --> 1:07:54.960
<v Speaker 2>is acquired. Like it doesn't doesn't really track. But that

1:07:55.720 --> 1:07:58.880
<v Speaker 2>system was based on severity and the age of presentation.

1:08:00.200 --> 1:08:04.200
<v Speaker 2>We also had a growing recognition that many body systems

1:08:04.240 --> 1:08:08.240
<v Speaker 2>were involved in the condition, like, not just bones, not

1:08:08.440 --> 1:08:12.280
<v Speaker 2>just bones and eyes. There were many, many, many different

1:08:12.720 --> 1:08:16.360
<v Speaker 2>organ systems and body systems involved, and we had some

1:08:16.520 --> 1:08:21.679
<v Speaker 2>diagnostic criteria. But what we didn't have by the first

1:08:21.760 --> 1:08:25.799
<v Speaker 2>half of the twentieth century is any real framework around

1:08:26.120 --> 1:08:30.120
<v Speaker 2>why why are the bones prone to fracture? Why are

1:08:30.160 --> 1:08:31.120
<v Speaker 2>the sclare of blue?

1:08:31.800 --> 1:08:31.840
<v Speaker 1>Like?

1:08:32.000 --> 1:08:37.640
<v Speaker 2>What is happening physiologically to cause the condition? There was

1:08:37.680 --> 1:08:41.759
<v Speaker 2>a general notion that it was a congenital connective tissue disorder,

1:08:42.400 --> 1:08:46.880
<v Speaker 2>a hypothesis supported by observations of dental cartilage, skin, and

1:08:46.960 --> 1:08:50.519
<v Speaker 2>blood vessel involvement in addition to the familiar bone and

1:08:50.680 --> 1:08:54.080
<v Speaker 2>eye and ear involvement. But what was happening at the

1:08:54.280 --> 1:08:59.040
<v Speaker 2>cellular level in all of the various types of osteogenesis

1:08:59.080 --> 1:09:03.160
<v Speaker 2>imperfecta I was still a mystery up into the nineteen seventies.

1:09:03.640 --> 1:09:05.080
<v Speaker 3>Wow right.

1:09:05.840 --> 1:09:10.800
<v Speaker 2>It was then that research on collagen had taken incredible

1:09:10.840 --> 1:09:14.880
<v Speaker 2>steps forward, and also during the nineteen sixties, because even

1:09:14.920 --> 1:09:18.799
<v Speaker 2>though collagen itself had been recognized since the nineteen thirties,

1:09:19.120 --> 1:09:24.000
<v Speaker 2>I believe the technology and background knowledge needed to uncover

1:09:24.200 --> 1:09:30.320
<v Speaker 2>the incredible importance and innumerable functions of this protein, like

1:09:30.439 --> 1:09:34.080
<v Speaker 2>how it synthesized its assembly and structure, not to mention

1:09:34.200 --> 1:09:39.160
<v Speaker 2>the many types of collagen. All of that background information

1:09:39.320 --> 1:09:43.200
<v Speaker 2>and technology wasn't there until the nineteen sixties and seventies.

1:09:44.720 --> 1:09:48.800
<v Speaker 2>But once these pieces came together, once collagen types one

1:09:48.880 --> 1:09:52.680
<v Speaker 2>through four and all the major steps in biosynthesis had

1:09:52.720 --> 1:09:56.640
<v Speaker 2>been identified, then finally people could start to get some

1:09:56.760 --> 1:10:02.040
<v Speaker 2>clarity not only on how collagen worked, but what happened

1:10:02.280 --> 1:10:06.559
<v Speaker 2>when it didn't work right. And just like what you said, Aaron,

1:10:06.640 --> 1:10:10.080
<v Speaker 2>because collagen is so abundant in our bodies, literally the

1:10:10.160 --> 1:10:14.200
<v Speaker 2>most abundant protein, and because it functions in so many

1:10:14.360 --> 1:10:19.440
<v Speaker 2>different ways, it can go wrong in just an unbelievable

1:10:19.840 --> 1:10:20.519
<v Speaker 2>number of ways.

1:10:20.920 --> 1:10:25.080
<v Speaker 3>There are so many other diseases and disorders that we

1:10:25.160 --> 1:10:27.760
<v Speaker 3>could cover that also have to do with collagen. I

1:10:27.880 --> 1:10:30.519
<v Speaker 3>was like deep diving on earlier's Dan Lows while I

1:10:30.640 --> 1:10:33.080
<v Speaker 3>was researching for this, So like, yeah.

1:10:33.160 --> 1:10:35.839
<v Speaker 2>Gotta do that someday. We've gotten a lot of requests

1:10:35.960 --> 1:10:41.240
<v Speaker 2>for sure. And as this research on collagen was happening,

1:10:41.479 --> 1:10:44.680
<v Speaker 2>as this like literal opening up of the field of collagen,

1:10:45.320 --> 1:10:51.000
<v Speaker 2>scientists were also busy tracking inheritance patterns in osteogenesis imperfecta,

1:10:51.680 --> 1:10:55.880
<v Speaker 2>observing that both these autosomal dominant and autosomal recessive types

1:10:55.920 --> 1:10:59.919
<v Speaker 2>were present, and also some of the ways that collagen

1:11:00.520 --> 1:11:04.439
<v Speaker 2>could go wrong and become involved in these different types

1:11:04.600 --> 1:11:08.560
<v Speaker 2>of ostrogenesis imperfecta. And so out of this, out of

1:11:08.680 --> 1:11:12.919
<v Speaker 2>this kind of just whirlwind couple of decades of research,

1:11:13.600 --> 1:11:18.120
<v Speaker 2>there was a great progress in genetic research in understanding

1:11:18.200 --> 1:11:22.400
<v Speaker 2>the precise nature of those changes in collagen, and that

1:11:22.680 --> 1:11:25.919
<v Speaker 2>has led to a greater understanding overall of the disorder

1:11:26.479 --> 1:11:29.280
<v Speaker 2>as well as, like you said, Aaron hopes for treatment

1:11:29.360 --> 1:11:33.000
<v Speaker 2>in the form of gene therapy. But like we talked

1:11:33.040 --> 1:11:36.360
<v Speaker 2>about in our Parkinson's disease episode, all of that new information,

1:11:36.920 --> 1:11:43.439
<v Speaker 2>while hugely important, doesn't necessarily translate into current application. With

1:11:43.640 --> 1:11:49.360
<v Speaker 2>the introduction of physiotherapy, rehabilitation, and improvements in orthopedic surgery,

1:11:50.280 --> 1:11:53.360
<v Speaker 2>we had come a long way in preventing and treating

1:11:53.439 --> 1:11:58.800
<v Speaker 2>fractures in people with ostrogenesis imperfecta since those earliest descriptions.

1:12:00.160 --> 1:12:04.280
<v Speaker 2>Until nineteen eighty seven, there was still no medication that

1:12:04.360 --> 1:12:08.360
<v Speaker 2>could help with bone density, loss or pain, despite dozens

1:12:08.439 --> 1:12:12.479
<v Speaker 2>of attempts. That year, a case study was published that

1:12:12.600 --> 1:12:15.280
<v Speaker 2>described a twelve year old girl who was diagnosed with

1:12:15.400 --> 1:12:22.680
<v Speaker 2>osteogenesis imperfecta after a spontaneous hip fracture. Her physicians prescribed bysphosphonate,

1:12:23.240 --> 1:12:26.599
<v Speaker 2>or a type of bysphosphonate drug that had been used

1:12:26.680 --> 1:12:30.840
<v Speaker 2>previously with some success in people with juvenile osteoporosis and

1:12:31.000 --> 1:12:34.840
<v Speaker 2>other types of conditions where bone mass loss was a feature.

1:12:35.920 --> 1:12:39.759
<v Speaker 2>Until this case, no one had apparently tried this drug

1:12:40.040 --> 1:12:44.280
<v Speaker 2>on osteogenesis imperfecta, and over the course of a year,

1:12:44.880 --> 1:12:48.720
<v Speaker 2>X rays and blood analysis showed increased bone mass, which

1:12:48.840 --> 1:12:54.200
<v Speaker 2>was amazing. After years of no effect, no effect, no effect,

1:12:54.600 --> 1:12:58.120
<v Speaker 2>finally there was a drug that showed some promise. A

1:12:58.160 --> 1:13:01.720
<v Speaker 2>bunch of studies followed, and it seems like it does

1:13:01.960 --> 1:13:06.000
<v Speaker 2>actually help with at the very least improving bone mass,

1:13:06.600 --> 1:13:12.000
<v Speaker 2>if not necessarily pain or fracture risk or overall bone growth.

1:13:12.960 --> 1:13:16.559
<v Speaker 2>But that alone is fantastic because there's really not been

1:13:17.240 --> 1:13:21.439
<v Speaker 2>anything before then. And Aaron, I know you're about to

1:13:21.520 --> 1:13:24.759
<v Speaker 2>tell me some more about like gene therapy and hopefully

1:13:24.840 --> 1:13:27.880
<v Speaker 2>other potential medications. I only made it to the nineteen

1:13:27.920 --> 1:13:31.599
<v Speaker 2>nineties with my research, but I think that one thing

1:13:31.840 --> 1:13:35.559
<v Speaker 2>that's really crucial to talk about that kept coming up

1:13:35.600 --> 1:13:38.400
<v Speaker 2>in some of these papers, although not enough is not

1:13:38.640 --> 1:13:42.479
<v Speaker 2>just the potential health benefits of these medications, but also

1:13:42.560 --> 1:13:46.960
<v Speaker 2>how they can improve quality of life. Fear of fractures,

1:13:47.400 --> 1:13:51.360
<v Speaker 2>anxiety about going outside or being active, caution when it

1:13:51.439 --> 1:13:55.320
<v Speaker 2>comes to everyday life and activity, isolation, or feelings of

1:13:55.439 --> 1:13:59.559
<v Speaker 2>being different. These are all commonly reported themes in studies

1:13:59.600 --> 1:14:02.920
<v Speaker 2>that try to examine the lived experience of people, both

1:14:03.000 --> 1:14:07.640
<v Speaker 2>children and adults with osteogenesis imperfecta, And of course not

1:14:07.880 --> 1:14:10.680
<v Speaker 2>every experience is the same, but I think that it's

1:14:10.720 --> 1:14:14.240
<v Speaker 2>important to talk about and recognize the non physical effects

1:14:14.600 --> 1:14:19.479
<v Speaker 2>that ostrogenesis imperfecta might have on someone. And certainly things

1:14:19.640 --> 1:14:23.479
<v Speaker 2>like OI groups and awareness campaigns have been fantastic for

1:14:23.560 --> 1:14:28.320
<v Speaker 2>building community and providing resources to people with osteogenesis imperfecta

1:14:28.520 --> 1:14:31.200
<v Speaker 2>as well as their caregivers. But there's still a long

1:14:31.280 --> 1:14:35.080
<v Speaker 2>way to go when it comes to treatment and access

1:14:35.479 --> 1:14:39.439
<v Speaker 2>to that treatment, because we know it's got to be expensive,

1:14:39.800 --> 1:14:43.760
<v Speaker 2>just has to be, so, Aaron, here's where I turn

1:14:43.840 --> 1:14:46.720
<v Speaker 2>it over to you to tell me what those up

1:14:46.760 --> 1:14:50.360
<v Speaker 2>and coming probably expensive treatments are, and you know everything

1:14:50.400 --> 1:14:53.839
<v Speaker 2>else about where we stand with osteogenesis imperfecta today.

1:14:54.760 --> 1:15:26.519
<v Speaker 3>I can't wait to try right after this break. So

1:15:26.680 --> 1:15:29.879
<v Speaker 3>one of the first papers that I read for researching

1:15:29.960 --> 1:15:36.360
<v Speaker 3>this episode described osteogenesis imperfecta as a quote fairly common

1:15:36.680 --> 1:15:42.080
<v Speaker 3>rare disorder, which boxymoron. Yeah, I don't know what that means.

1:15:42.760 --> 1:15:45.559
<v Speaker 3>But the stat that was quoted in that paper, as

1:15:45.640 --> 1:15:49.760
<v Speaker 3>well as pretty much every paper that had statistics, was

1:15:50.600 --> 1:15:56.240
<v Speaker 3>that osteogenesis imperfecta is found in one in fifteen to

1:15:56.439 --> 1:16:02.200
<v Speaker 3>twenty thousand berths every year. Okay, so if we air

1:16:02.280 --> 1:16:06.240
<v Speaker 3>in mathis, which you know I'm going to, According to Google,

1:16:06.640 --> 1:16:09.599
<v Speaker 3>there are one hundred and forty million berths every year,

1:16:10.520 --> 1:16:13.720
<v Speaker 3>and the CDC says that in the US there are

1:16:14.040 --> 1:16:17.479
<v Speaker 3>over just a little over three point six million berths

1:16:17.560 --> 1:16:20.280
<v Speaker 3>every year in the US. So if we assume on

1:16:20.360 --> 1:16:24.559
<v Speaker 3>the low end, one in fifteen thousand people are born

1:16:24.800 --> 1:16:29.400
<v Speaker 3>with osteogenesis imperfecta, that would be worldwide just over nine

1:16:29.560 --> 1:16:33.679
<v Speaker 3>thousand people born with OI every year and two hundred

1:16:33.680 --> 1:16:38.519
<v Speaker 3>and forty in the US each year. Okay, Now, since

1:16:38.640 --> 1:16:43.960
<v Speaker 3>these are birth statistics, they are very likely underestimates because

1:16:44.240 --> 1:16:48.080
<v Speaker 3>these are going to reflect relatively more severe forms of

1:16:48.160 --> 1:16:51.360
<v Speaker 3>osteogenesis in perfecta, because there are always going to be

1:16:51.439 --> 1:16:54.040
<v Speaker 3>people that don't end up getting diagnosed until later in

1:16:54.080 --> 1:16:57.000
<v Speaker 3>their life because of less severe phenotypes or just not

1:16:57.160 --> 1:17:01.800
<v Speaker 3>being diagnosed in infancy for one reason or another. A

1:17:01.920 --> 1:17:06.000
<v Speaker 3>couple of papers that I read cited an estimated prevalence

1:17:06.560 --> 1:17:10.799
<v Speaker 3>of twenty five to fifty thousand people in the United

1:17:10.920 --> 1:17:17.559
<v Speaker 3>States living with OI, but it was very disappointingly difficult

1:17:17.640 --> 1:17:22.280
<v Speaker 3>to get any additional data on prevalence worldwide.

1:17:23.200 --> 1:17:25.320
<v Speaker 2>That surprises me.

1:17:26.040 --> 1:17:32.000
<v Speaker 3>I know, and these are a whole variety of genetic disorders,

1:17:32.520 --> 1:17:36.280
<v Speaker 3>but I couldn't find almost anything in terms of the

1:17:36.520 --> 1:17:40.519
<v Speaker 3>estimates on like what is the variability geographically across the globe,

1:17:40.560 --> 1:17:43.760
<v Speaker 3>because of course there's going to be some and there

1:17:43.840 --> 1:17:46.360
<v Speaker 3>does seem to be some variability, but there was so

1:17:46.760 --> 1:17:49.360
<v Speaker 3>little data, and the data that I found was like

1:17:50.040 --> 1:17:53.720
<v Speaker 3>reported quite differently in the few countries that it was

1:17:53.880 --> 1:17:57.439
<v Speaker 3>reported in like this many cases per one hundred thousand

1:17:57.920 --> 1:18:00.479
<v Speaker 3>versus per ten thousand births in this kind, so like

1:18:00.760 --> 1:18:03.800
<v Speaker 3>it was really hard to make any meaningful comparisons in

1:18:03.920 --> 1:18:08.040
<v Speaker 3>other countries aside from the US. So I apologize, I

1:18:08.160 --> 1:18:11.479
<v Speaker 3>just couldn't find it. But in any case, this is

1:18:11.600 --> 1:18:16.519
<v Speaker 3>certainly a rare disorder. But as always, the more that

1:18:16.680 --> 1:18:19.400
<v Speaker 3>we think about it and look for it and research

1:18:19.479 --> 1:18:24.040
<v Speaker 3>it the more that we find. So in terms of

1:18:24.479 --> 1:18:28.639
<v Speaker 3>where we stand with current research, again here I found

1:18:28.800 --> 1:18:32.439
<v Speaker 3>less than I was hoping for, but not nothing. There

1:18:32.520 --> 1:18:38.280
<v Speaker 3>is one new drug, very new drug making headlines big

1:18:38.439 --> 1:18:42.439
<v Speaker 3>time that's in phase two and three clinical trials right now.

1:18:43.320 --> 1:18:48.400
<v Speaker 3>This drug is a monoclonal antibody that specifically this is

1:18:48.520 --> 1:18:54.120
<v Speaker 3>really interesting to me. It inhibits a small protein called sclerostin,

1:18:55.040 --> 1:18:58.960
<v Speaker 3>which is a protein that is involved in the remodeling

1:18:59.520 --> 1:19:05.160
<v Speaker 3>of bone. So the idea behind this is that by

1:19:05.400 --> 1:19:09.479
<v Speaker 3>inhibiting the action of this protein, you end up having

1:19:09.720 --> 1:19:14.960
<v Speaker 3>increased bone formation and decreased bone resorption that could lead

1:19:15.000 --> 1:19:19.280
<v Speaker 3>to stronger bones and less fractures and increased quality of life.

1:19:20.600 --> 1:19:24.639
<v Speaker 3>Can I ask a question about bone remodeling? Sure?

1:19:25.920 --> 1:19:26.120
<v Speaker 1>Why?

1:19:28.439 --> 1:19:30.160
<v Speaker 2>I feel like we talked about this in Ricketts, but

1:19:30.200 --> 1:19:31.719
<v Speaker 2>I don't. Yeah.

1:19:32.040 --> 1:19:36.320
<v Speaker 3>Yeah, So your bones are almost constantly, like your body

1:19:36.479 --> 1:19:42.599
<v Speaker 3>is resorbing bone and then remodeling bone. And this process

1:19:42.680 --> 1:19:46.719
<v Speaker 3>also happens a lot during the growth process. Like growth

1:19:46.880 --> 1:19:49.600
<v Speaker 3>of bone is not just like this one off like

1:19:49.680 --> 1:19:53.360
<v Speaker 3>your bone grows process. There's like the collagen parts of

1:19:53.400 --> 1:19:56.200
<v Speaker 3>bone have to grow, the minimalization deposit has to happen like,

1:19:56.280 --> 1:20:00.920
<v Speaker 3>it's a whole process, and there's this would be a

1:20:01.000 --> 1:20:05.920
<v Speaker 3>fun whole episode honestly to do about like bones, osteoblasts

1:20:05.920 --> 1:20:09.200
<v Speaker 3>and osteoclass and like. But in any case, it's a

1:20:09.400 --> 1:20:14.240
<v Speaker 3>process that happens over time. Your bones are dynamic.

1:20:15.280 --> 1:20:18.439
<v Speaker 2>Is that yeah? No, I mean that answers my question.

1:20:18.680 --> 1:20:22.560
<v Speaker 2>But I guess my follow up question then, is is

1:20:22.640 --> 1:20:27.480
<v Speaker 2>there a potential downside then to inhibiting the bone remodeling.

1:20:30.160 --> 1:20:35.479
<v Speaker 3>I'm sure potentially, Okay, potentially, yes. I don't know any

1:20:35.560 --> 1:20:39.000
<v Speaker 3>more details about it. I just know that the idea

1:20:39.120 --> 1:20:42.080
<v Speaker 3>behind this is that if in the case that you

1:20:42.360 --> 1:20:47.240
<v Speaker 3>have bones that are already more fragile, you want just

1:20:47.360 --> 1:20:49.800
<v Speaker 3>an increase in bone formation, kind of in the same

1:20:49.880 --> 1:20:54.720
<v Speaker 3>way that bisphosphonates are leading to more mineral deposition and

1:20:54.920 --> 1:20:57.479
<v Speaker 3>less of the remodeling. If that makes sense.

1:20:58.320 --> 1:20:59.040
<v Speaker 2>Yeah, yeah, yeah.

1:21:00.360 --> 1:21:03.600
<v Speaker 3>The good thing about this particular treatment is that it

1:21:03.760 --> 1:21:07.760
<v Speaker 3>is not mutation specific. This has the potential to help

1:21:08.040 --> 1:21:13.519
<v Speaker 3>regardless of most of the underlying causes or mutations involved

1:21:13.600 --> 1:21:18.360
<v Speaker 3>in osteogenesis in perfecta. It's still very much in clinical trials.

1:21:18.880 --> 1:21:22.280
<v Speaker 3>I have no idea. Time will tell if it's effective

1:21:22.400 --> 1:21:26.439
<v Speaker 3>or not. And I really expected to find a lot

1:21:26.600 --> 1:21:31.360
<v Speaker 3>more because this is a genetic disorder, because many of

1:21:31.439 --> 1:21:34.439
<v Speaker 3>the cases are autosomal dominant disorders, and we know the

1:21:34.560 --> 1:21:38.320
<v Speaker 3>genes that are involved, a lot more information on where

1:21:38.360 --> 1:21:41.679
<v Speaker 3>we stand with gene therapy. But I really didn't find much.

1:21:42.720 --> 1:21:44.840
<v Speaker 3>And you know what else just occurred to me is

1:21:44.880 --> 1:21:48.840
<v Speaker 3>that it seems like the very few treatments we have

1:21:49.080 --> 1:21:53.280
<v Speaker 3>so far are mostly targeting bone, not any of the

1:21:53.400 --> 1:22:00.719
<v Speaker 3>other organs or tissues affected by osteogenesis imperfecta. Yes, definitely, definitely,

1:22:01.000 --> 1:22:05.280
<v Speaker 3>that's the vast majority of all treatments prior and current

1:22:06.600 --> 1:22:13.800
<v Speaker 3>through that. Yeah. Yeah. The Osteogenesis Imperfective Foundation has some

1:22:14.000 --> 1:22:18.880
<v Speaker 3>information on other trials that are ongoing, and there are

1:22:19.040 --> 1:22:23.400
<v Speaker 3>a number of other additional targets that are being looked

1:22:23.439 --> 1:22:28.320
<v Speaker 3>at in terms of other ways to try and treat mostly,

1:22:28.560 --> 1:22:32.920
<v Speaker 3>like you said, Aaron, the bone components of osteogenesis imperfecta.

1:22:33.840 --> 1:22:37.679
<v Speaker 3>There are also studies being done importantly by Baylor College

1:22:37.680 --> 1:22:41.720
<v Speaker 3>of Medicine to look at mental health and quality of

1:22:41.880 --> 1:22:46.760
<v Speaker 3>life overall in people living with osteogenesis imperfecta, which is

1:22:47.240 --> 1:22:53.920
<v Speaker 3>always an overlooked part of any chronic disorder story quite honestly, Yeah,

1:22:54.800 --> 1:22:59.280
<v Speaker 3>and a really important one at that. That's what I have,

1:23:00.080 --> 1:23:02.639
<v Speaker 3>so it's not as much as I would have liked.

1:23:03.560 --> 1:23:07.080
<v Speaker 3>Please let me know, listeners if I missed something major,

1:23:07.280 --> 1:23:09.120
<v Speaker 3>because I'd like to know if there's more out there.

1:23:10.400 --> 1:23:12.840
<v Speaker 3>But if you'd like to learn more, who have we

1:23:12.920 --> 1:23:13.880
<v Speaker 3>got sources for you?

1:23:14.479 --> 1:23:14.599
<v Speaker 4>Oh?

1:23:14.680 --> 1:23:18.200
<v Speaker 2>We certainly do. I've got uh. I had more than

1:23:18.240 --> 1:23:20.760
<v Speaker 2>a handful, but I'm only going to shout out too

1:23:21.040 --> 1:23:26.120
<v Speaker 2>right now. One is by Wheel from nineteen eighty Osteogenesis

1:23:26.160 --> 1:23:29.920
<v Speaker 2>Imperfecta Historical background, and then I read a book chapter

1:23:30.120 --> 1:23:35.200
<v Speaker 2>from twenty fourteen by Silence and Lamonde titled Evolution of

1:23:35.280 --> 1:23:39.240
<v Speaker 2>the present Understanding of the clinical and genetic heterogeneity and

1:23:39.400 --> 1:23:43.400
<v Speaker 2>molecular and biochemical basis of Osteogenesis Imperfecta.

1:23:44.560 --> 1:23:49.080
<v Speaker 3>Ooh, it's a mouthful. I have a number of papers.

1:23:49.160 --> 1:23:53.519
<v Speaker 3>Some of my favorites were three different papers just titled

1:23:53.560 --> 1:23:57.760
<v Speaker 3>Osteogenesis Imperfecta. Gotta love the simplicity of it. Two that

1:23:57.840 --> 1:23:59.840
<v Speaker 3>were from the Lancet, one that was from Nature of You.

1:24:00.320 --> 1:24:04.479
<v Speaker 3>Disease primers always a favorite. There are a whole bunch more.

1:24:04.920 --> 1:24:07.559
<v Speaker 3>A paper about collagen if you want a deep dive

1:24:07.840 --> 1:24:12.920
<v Speaker 3>on that, and papers about the current understanding the different

1:24:12.960 --> 1:24:18.000
<v Speaker 3>classifications and of course investigations into treatments. You can find

1:24:18.040 --> 1:24:20.840
<v Speaker 3>the list of sources from this episode and every single

1:24:20.960 --> 1:24:23.680
<v Speaker 3>one of our episodes on our website, this podcast will

1:24:23.720 --> 1:24:26.679
<v Speaker 3>Kill You dot Com under the episodes tab.

1:24:27.360 --> 1:24:31.000
<v Speaker 2>Thank you Natalie again, so so much for sharing your

1:24:31.040 --> 1:24:35.360
<v Speaker 2>story with us. Like, we just cannot express how much

1:24:35.479 --> 1:24:37.080
<v Speaker 2>we appreciate you doing that.

1:24:37.720 --> 1:24:41.920
<v Speaker 3>Yeah, thank you so much. Thank you also to Bloodmobile

1:24:42.040 --> 1:24:44.960
<v Speaker 3>for providing the music for this episode and all of

1:24:45.000 --> 1:24:46.240
<v Speaker 3>our episodes.

1:24:46.240 --> 1:24:49.839
<v Speaker 2>And thank you to Tom Bryfogel for the audio mixing.

1:24:50.080 --> 1:24:51.400
<v Speaker 2>We love it, we do.

1:24:51.880 --> 1:24:53.880
<v Speaker 3>Thank you exactly right network, and.

1:24:54.000 --> 1:24:55.360
<v Speaker 2>Thank you to you listeners.

1:24:56.000 --> 1:24:56.760
<v Speaker 3>I hope you liked it.

1:24:57.000 --> 1:24:58.680
<v Speaker 2>How do you feel about collagen.

1:24:58.680 --> 1:25:02.720
<v Speaker 3>Collagen whole episode on it? Let us know. Yeah, And

1:25:03.000 --> 1:25:05.960
<v Speaker 3>as always, a special thank you to our patrons. Thank

1:25:06.000 --> 1:25:09.680
<v Speaker 3>you so much for your support. It means everything, it

1:25:09.960 --> 1:25:10.519
<v Speaker 3>truly does.

1:25:11.800 --> 1:25:15.120
<v Speaker 2>Okay, Well, until next time, wash your hands

1:25:15.400 --> 1:25:16.400
<v Speaker 3>You fail the animals