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4-Methylcatechol, an inducer of nerve growth factor synthesis, enhances peripheral nerve regeneration across nerve gaps

K Kaechi, R Ikegami, N Nakamura, M Nakajima, Y Furukawa and S Furukawa

Department of Molecular Biology, Gifu Pharmaceutical University, Japan.

The effect on peripheral nerve regeneration of 4-methylcatechol (MC), which is a potent inducer of nerve growth factor (NGF) synthesis in vitro and in vivo, was examined in a sciatic nerve-lesioned animal model. The sciatic nerve of adult male Wistar rats was transected and both of the cut ends were then inserted into sterile silicone tubes that were subsequently attached to an intervening silicone chamber. After surgery, the rats were injected i.p. every day for 2 weeks with MC. Two weeks after surgery, the density of nonmyelinated axons within the chamber was significantly increased in the MC-treated group compared with that in the control group. Five weeks after surgery, both the number and the diameter of myelinated axons within the chamber of the MC-treated group were significantly larger than those of the control group. When the chamber was filled with anti-NGF antibody solution, most of the MC effect was blocked. These results suggest that MC stimulates de novo synthesis of NGF (and/or NGF-related molecules), which results in the enhancement of sprouting and maturation of peripheral axons.

Volume 272, Issue 3, pp. 1300-1304, 03/01/1995
Copyright © 1995 by American Society for Pharmacology and Experimental Therapeutics




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Copyright © 1995 by the American Society for Pharmacology and Experimental Therapeutics.