• Life sciences · Jan 1998

    Effects of neurotropin on hyperalgesia and allodynia in mononeuropathic rats.

    • M R Saleh, H Muneshige, and Y Ikuta.
    • Department of Orthopedic Surgery, Hiroshima University School of Medicine, Japan.
    • Life Sci. 1998 Jan 1;63(21):1931-8.

    AbstractNeurotropin is commonly used in Japan for the treatment of chronic pain. Using a rat model, we evaluated the effect of neurotropin on a unilateral peripheral mononeuropathy produced by placing loose ligatures around the sciatic nerve. The effect of neurotropin upon the resultant hyperalgesia and mechanical allodynia was assessed using the Ugo Basile Plantar test and von Frey hairs test, respectively. Neurotropin reduced thermal hyperalgesia and produced an early recovery from hyperalgesia in a dose-dependent manner. No significant reduction in mechanical allodynia, however, was noted under the tested condition. A possibility of differential drug sensitivity for thermal hyperalgesia and mechanical allodynia was indicated in this model, although the reason still remain elusive.

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