Endoneurial extracellular matrix influences regeneration and maturation of motor nerve axons—A model of acellular nerve graft

Varování

Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Lékařskou fakultu. Oficiální stránka publikace je na webu muni.cz.
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KUBEK Tomáš GHALIB Nabil Ahmed DUBOVÝ Petr

Rok publikování 2011
Druh Článek v odborném periodiku
Časopis / Zdroj Neuroscience Letters
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
Doi http://dx.doi.org/10.1016/j.neulet.2011.03.085
Obor Neurologie, neurochirurgie, neurovědy
Klíčová slova Acellular nerve graft; Extracellular matrix; Nerve regeneration
Přiložené soubory
Popis Clinical results of functional reinnervation after application of autogeneous nerve grafts obtained from cutaneous nerves have not always been satisfactory.Aforeign extracellular condition especially for regeneration of motor axons is assumed to be one of the reasons explaining these unsuccessful results. The role of endoneurial extracellular matrix in regeneration and maturation of motor axons was studied using acellular nerve segment prepared from muscular or cutaneous nerves applied between stumps of transected motor branch of the femoral nerve. No differences were found in the numbers of regenerated axons and related motoneurons through the motor and cutaneous nerve grafts 1 month after operation. Two months from grafting, however, the numbers of motoneurons and regenerated axons were increased significantly in the motor grafts while these were decreased after regeneration through the cutaneous grafts compared with 1 month. Axons’ diameter and thickness of their myelin sheaths were similar in the cutaneous grafts 1 and 2 months after grafting. In comparison to 1 month, axons had larger diameter and thicker myelin in the motor than cutaneous nerve grafts 2 months from their application. Results of morphometric analysis indicate more beneficial extracellular conditions for regeneration and maturation of myelinated motor nerve axons in the acellular motor than cutaneous nerve graft. Generally, the results revealed that the endoneurial extracellular matrix of motor fibers has a positive effect on regeneration and maturation of motor nerve axons after lesion.
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