Joint development recovery on resumption of embryonic movement following paralysis
Abstract Fetal activityin uterois a normal part of pregnancy and reduced or absent movement can lead to long-term skeletal defects such as Fetal Akinesia Deformation Sequence (FADS), joint dysplasia and arthrogryposis. A variety of animal models with decreased or absent embryonic movements show a consistent set of developmental defects providing insight into the aetiology of congenital skeletal abnormalities. At developing joints defects include reduced joint interzones with frequent fusion of cartilaginous skeletal rudiments across the joint. At the spine defects include shortening and a spectrum of curvature deformations. An important question, with relevance to possible therapeutic interventions for human conditions, is the capacity for recovery with resumption of movement following short term immobilisation. Here we use the well-established chick model to compare the effects of sustained immobilisation from embryonic day (E) 4-10 to two different recovery scenarios: (i) natural recovery from E6 until E10 and (ii) the addition of hyperactive movement stimulation during the recovery period. We demonstrate partial recovery of movement and partial recovery of joint development under both recovery conditions, but no improvement in spine defects. The joints examined (elbow, hip and knee) showed better recovery in hindlimb than forelimb, with hyperactive mobility leading to greater recovery in the knee and hip. The hip joint showed the best recovery with improved rudiment separation, tissue organisation and commencement of cavitation. This work demonstrates that movement post paralysis can partially-recover specific aspects of joint development which could inform therapeutic approaches to ameliorate the effects of human fetal immobility.Summary Statement The study reveals that embryonic movement post paralysis can partially-recover specific aspects of joint development, which could inform therapeutic approaches to ameliorate the effects of restricted fetal movementin utero..
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Preprint| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
bioRxiv.org - (2022) vom: 11. Dez. Zur Gesamtaufnahme - year:2022 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Rolfe, Rebecca A. [VerfasserIn] |
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| doi: |
10.1101/2021.01.08.425893 |
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| PPN (Katalog-ID): |
XBI019700245 |
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| 245 | 1 | 0 | |a Joint development recovery on resumption of embryonic movement following paralysis |
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| 520 | |a Abstract Fetal activityin uterois a normal part of pregnancy and reduced or absent movement can lead to long-term skeletal defects such as Fetal Akinesia Deformation Sequence (FADS), joint dysplasia and arthrogryposis. A variety of animal models with decreased or absent embryonic movements show a consistent set of developmental defects providing insight into the aetiology of congenital skeletal abnormalities. At developing joints defects include reduced joint interzones with frequent fusion of cartilaginous skeletal rudiments across the joint. At the spine defects include shortening and a spectrum of curvature deformations. An important question, with relevance to possible therapeutic interventions for human conditions, is the capacity for recovery with resumption of movement following short term immobilisation. Here we use the well-established chick model to compare the effects of sustained immobilisation from embryonic day (E) 4-10 to two different recovery scenarios: (i) natural recovery from E6 until E10 and (ii) the addition of hyperactive movement stimulation during the recovery period. We demonstrate partial recovery of movement and partial recovery of joint development under both recovery conditions, but no improvement in spine defects. The joints examined (elbow, hip and knee) showed better recovery in hindlimb than forelimb, with hyperactive mobility leading to greater recovery in the knee and hip. The hip joint showed the best recovery with improved rudiment separation, tissue organisation and commencement of cavitation. This work demonstrates that movement post paralysis can partially-recover specific aspects of joint development which could inform therapeutic approaches to ameliorate the effects of human fetal immobility.Summary Statement The study reveals that embryonic movement post paralysis can partially-recover specific aspects of joint development, which could inform therapeutic approaches to ameliorate the effects of restricted fetal movementin utero. | ||
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