Effect of basic fibroblast growth factor and α‐melanocytic stimulating hormone on nerve regeneration through a collagen channel
- 1 January 1994
- journal article
- Published by Wiley in Microsurgery
- Vol. 15 (3) , 203-210
- https://doi.org/10.1002/micr.1920150312
Abstract
An experimental study on the rat sciatic nerve was performed to evaluate nerve regeneration through a collagen guide and to study the effects of α‐melanocytic stimulating hormone (α‐MSH) and basic fibroblast growth factor (b‐FGF) in accel erating axonal elongation. After transection, nerves were repaired over a 7 mm gap using a placental collagen type IV guide. The channel was filled with either a b‐FGF solution or an α‐MSH solution or was produced with b‐FGF incorporated into the guide. Four weeks later, only groups in which b‐FGF had been injected or incorporated displayed a significant somatosensory evoked potential response. Histological and quantitative analysis of nerve fibres confirmed the existence of nerve continuity in groups receiving an α‐MSH solution or a channel containing b‐FGF. These results demonstrate that α‐MSH in solution and b‐FGF incorporated into a collagen type IV channel enhance peripheral nerve regeneration. However, at 4 weeks, only b‐FGF (3 ng) restores functional activity. La régénération nerveuse périphérique spontaée à travers un cylindre de collaène et I'effet du b‐FGF et de I'α‐MSH sur I'élongation axonale ont été évalués sur le nerf sciatique de rat. Après réalisation d'un intervalle de sept millimètres, les nerfs ont été réparés avec un cylindre de collagène humain placentaire de type TV, seul ou contenant une solution d'α‐ MSH, de b‐FGF, ou du b‐FGF incorporé dans sa paroi. Quatre semaines après, des potentiels évoqués somesthésiques n'étaient enregistré que dans les groupes ayant recu du b‐FGF. L'histologie et la quantification des fibres nerveuses ont confirmé la continuité nerveuse dans les groupes traités avec de I'α‐MSH ou du b‐FGF incorporé. Cependant, au bout de quatre semaines, seul le b‐FGF (3 ng incorporés) permettait une récupération fonctionnelle.Keywords
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