Author(s): Ishihara H, Mori M, Kobayashi I, Kobayashi S
Abstract Share this page
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.
This article was published in Proc Soc Exp Biol Med
and referenced in Journal of Molecular and Genetic Medicine