Peripheral nerve regeneration through bioresorbable and durable nerve guides

Xavier Navarro, Francisco J. Rodríguez, Rafael O. Labrador, Miquel Butí, Dolores Ceballos, Nuria Gómez, Jordi Cuadras, Gabriele Perego

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    81 Citations (Scopus)

    Abstract

    We compared reinnervation of target organs after sciatic nerve resection and repair by tubulization with biodurable tubes of silicone and teflon, or bioresorbable nerve guides of collagen and poly(L-lactide-co-6-caprolactone) (PLC) leaving a 6 mm gap in different groups of mice. All tubes were of 1 mm inside diameter and thin-walled (50 to 250 μm). Functional reinnervation was assessed by noninvasive methods to determine recovery of sweating, sensory and motor functions in the hindpaw repeatedly during 5 months postoperation. PLC guides allowed faster and higher levels of reinnervation for the four functions tested than collagen and silicone tubes, while teflon tubes gave the lowest levels of recovery. Regenerative reinnervation by thin nociceptive and sudomotor fibers was higher than by large sensory and alphamotor fibers in all groups. Resorbable tubes promoted regeneration in a higher proportion of mice than durable tubes. In cases with effective regeneration the nerve cable was multifascicular, with mild to moderate mononuclear cell infiltrates and a thin newly formed perineurium. The number of myelinated fibers was higher in PLC and silicone tubes than in collagen and teflon tubes. There was only minimal inflammatory reaction within the remnants of collagen tubes, but not in the other materials. PLC tubes of slow reabsorption rate seem useful for repairing long gaps in injured nerves. © 1996 Woodland Publications.
    Original languageEnglish
    Pages (from-to)53-64
    JournalJournal of the Peripheral Nervous System
    Volume1
    Issue number1
    Publication statusPublished - 1 Dec 1996

    Keywords

    • Bioresorbable tube
    • Nerve regeneration
    • Reinnervation
    • Sciatic nerve
    • Tube repair

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