PERIPHERAL-NERVE REPAIR - ROLE OF AGAROSE MATRIX DENSITY ON FUNCTIONAL RECOVERY

THIS Study presents quantitative data on the functional reinnervation of sweat glands, muscle and skin in the mouse paw after resection of t he sciatic nerve and repair by entubulation with silicone tubes prefil led with agarose gels of different concentrations. The rate and the de gree of functional recovery of animals with, chambers filled with 0.5% agarose gels were slightly higher than with 1% agarose, and significa ntly higher than with 2% agarose. All these three groups recovered sig nificantly better than a fourth group with an unrepaired resection. We conclude that peripheral nerves can regenerate through agarose gels i n vivo and reinnervate distal target organs, but the concentration and the density of the exogenous intratubular matrix are important factor s in determining the success of nerve regeneration and reinnervation.