作者:Mónica Méndez-Díaz、Octavio Amancio-Belmont、Eduardo Hernández-Vázquez、Alejandra E. Ruiz-Contreras、Francisco Hernández-Luis、Oscar Prospéro-García
DOI:10.1016/j.pbb.2015.06.007
日期:2015.8
Over the past decade, pharmacological manipulation of cannabinoid 1 receptor (CB1R) has become an interesting approach for the management of food ingestion disorders, among other physiological functions. Searching for new substances with similar desirable effects, but fewer side-effects we have synthesized a SR141716A (a cannabinoid receptor inverse agonist also called Rimonabant) analog, 1-(2,4-Difluorophenyl)-4-methyl-N-(1-piperidinyl)-5-[4-(trifluoromethyl)phenyl]-1H-pyrazole-3-carboxamide, ENP11, that so far, as we have previously shown, has induced changes in glucose availability, i.e. hypoglycemia, in rats. In this study we tested the effects, if any, of ENP11 (0.5, 1.0, and 3.0 mg/kg) in food ingestion, core temperature, pain perception and motor control in adult Wistar rats.Results showed that ENP11 reduced food ingestion during the first hour immediately after administration. Likewise, ENP11 (1.0 mg/kg) blocked anandamide (AEA)-induced hyperphagia during the first 4 h of the dark phase of the light-dark cycle, and it also blocked AEA-induced hypothermia. However, none of the ENP11 doses used affected pain perception or motor control.We believe that ENP11 is a potential useful CB1R antagonist that reduces food ingestion and regulates core temperature. (C) 2015 Elsevier Inc. All rights reserved.