Exogenous pleiotrophin applied to lesioned nerve impairs muscle reinnervation. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Neurochemical Research Année : 2006

Exogenous pleiotrophin applied to lesioned nerve impairs muscle reinnervation.

Résumé

Pleiotrophin (PTN) is a heparin-binding growth factor involved in nerve regeneration after peripheral nerve injury. After crush injury, PTN is found in distal nerve segments in several non-neural cell types, including Schwann cells, macrophages, and endothelial cells, but not in axons. To further clarify the role for PTN in nerve regeneration, we investigated the effects of PTN applied to lesioned peripheral nerve in vivo. PTN in a dose of 1 mg/kg impaired muscle reinnervation. Thus, gastrocnemius muscle failed to recover its contractile properties as assessed by in situ maximal isometric tetanic force. PTN also decreased non-neural cell densities and delayed macrophage recruitment in the distal crushed nerve. These results are discussed in the light of recent evidence that PTN is a multifunctional polypeptide.
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Dates et versions

hal-00109603 , version 1 (25-10-2006)

Identifiants

  • HAL Id : hal-00109603 , version 1
  • PUBMED : 16804756

Citer

Jose Courty, B. Blondet, G. Carpentier, A. Ferry. Exogenous pleiotrophin applied to lesioned nerve impairs muscle reinnervation.. Neurochemical Research, 2006, 31 (7), pp.907-913. ⟨hal-00109603⟩
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