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Development of myofibres and associated connective tissues in fish axial muscle: Recent insights and future perspectives

Abstract : Fish axial muscle consists of a series of W-shaped muscle blocks, called myomeres, that are composed primarily of multinucleated contractile muscle cells (myofibres) gathered together by an intricate network of connective tissue that transmits forces generated by myofibre contraction to the axial skeleton. This review summarises current knowledge on the successive and overlapping myogenic waves contributing to axial musculature formation and growth in fish. Additionally, this review presents recent insights into muscle connective tissue development in fish, focusing on the early formation of collagenous myosepta separating adjacent myomeres and the late formation of intramuscular connective sheaths (i.e. endomysium and perimysium) that is completed only at the fry stage when connective fibroblasts expressing collagens arise inside myomeres. Finally, this review considers the possibility that somites produce not only myogenic, chondrogenic and myoseptal progenitor cells as previously reported, but also mesenchymal cells giving rise to muscle resident fibroblasts.
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https://hal.inrae.fr/hal-02622775
Contributor : Migration Prodinra <>
Submitted on : Tuesday, May 26, 2020 - 6:36:25 AM
Last modification on : Friday, April 2, 2021 - 3:34:05 PM

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Pierre-Yves Rescan. Development of myofibres and associated connective tissues in fish axial muscle: Recent insights and future perspectives. Differentiation, Elsevier, 2019, 106, pp.35-41. ⟨10.1016/j.diff.2019.02.007⟩. ⟨hal-02622775⟩

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