Experimental Animals
Online ISSN : 1881-7122
Print ISSN : 0007-5124
Studies on the Behavioral Pharmacology of TRH-T in Cytosine Arabinoside-Induced Ataxic Mice: A Comparison with Genetically Ataxic Mice
Kyoko MATSUIYukio MANOMasakuni MUKOYAMAOsamu MURAMOTOEitoku TOYOSHIMAKazuya ANDO
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1983 Volume 32 Issue 1 Pages 13-19

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Abstract

The effects of thyrotropin releasing hormone tartrate (TRH-T) on the behavior of cytosine arabinoside (Ara-C) induced ataxic mice were studied. The ataxic mice were prepared by injecting 50 mg/kg/day subcutaneously on the 2nd, 3 nd and 4 th postnatal days. Spontaneous motor activities were measured with a movement spectrum analyzer (ANIMEX-2) and the degree of ataxic gait determined by an open-field study. Cerebella from these animals were subjected to histopathologic examination at 4, 8 and 12 weeks of age. Ataxic gait became improved moderately and spontaneous motor activities increased slightly following administration of TRH-T. The effects of TRH-T on ataxia and spontaneous motility in the Ara-C injected mice varied with the age, and resembled those seen in weaver mice but not those in the Rolling mouse Nagoya. The results also suggest that the effects of TRH-T on the behavior of ataxic mice correlate with the extent of pathologic changes evoked in their cerebella.

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© Japanese Association for Laboratory Animal Science
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