Abstract
We explored the effect of cyclo(His-Pro) on drinking in water-deprived rats. Intraventricular administration of cyclo(His-Pro) significantly reduced water intake in these rats in a dose-dependent fashion (3 X 10(-10) -3 X 10(-8) mole), whereas its intraperitoneal injection did not cause any effect on water intake. The inhibitory potency of cyclo(His-Pro) was found to be similar to that of thyrotropin-releasing hormone (TRH), but cyclo(His-Pro) did not significantly interfere with TRH binding in the rat brain. The data indicate that cyclo(His-Pro) action was not mediated through the TRH counterpart. These results suggest that cyclo(His-Pro) may play a potential role in the regulation of water intake in the rat brain.
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Schedule a callMore From: Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.)
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