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  • Title: Histologic analysis of Schwann cell migration and peripheral nerve regeneration in the autogenous venous nerve conduit (AVNC).
    Author: Tseng CY, Hu G, Ambron RT, Chiu DT.
    Journal: J Reconstr Microsurg; 2003 Jul; 19(5):331-40. PubMed ID: 14506582.
    Abstract:
    Over the last two decades, the autogenous venous nerve conduit (AVNC) has been established as an effective treatment modality for the repair of nerve gaps less than 3 cm. In this study, the spatial-temporal progression of Schwann-cell migration and peripheral-nerve regeneration across a 10-mm gap bridged by a venous conduit was examined, using immunoctyochemical techniques. Histologic analysis revealed that the process of nerve regeneration through an AVNC occurs in four phases: the hematoma phase, cellular migration phase, axonal advancement phase, and myelination and maturation phase. The authors found that: 1) the lumen of the vein conduit remains patent throughout the process of nerve regeneration; 2) Schwann cells migrate into the vital space of the vessel lumen from the proximal and distal nerve stumps; 3) axonal growth into the conduit lags behind Schwann-cell migration; 4) Schwann cells migrate to the regenerating axons to form mature nodes of Ranvier when the distal stump is present; and 5) mechanical injury alone is sufficient to induce axonal outgrowth from the proximal nerve stump.
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