PMID- 14998822 OWN - NLM STAT- MEDLINE DCOM- 20040628 LR - 20190513 IS - 0735-0414 (Print) IS - 0735-0414 (Linking) VI - 39 IP - 2 DP - 2004 Mar-Apr TI - Chronic ethanol consumption regulates cannabinoid CB1 receptor gene expression in selected regions of rat brain. PG - 88-92 AB - AIMS: The aim of this study was to examine the effects of chronic ethanol consumption in cannabinoid CB(1) receptor gene expression in Wistar rats. METHODS: Rats were exposed to a bottle containing a solution of ethanol (10% v/v) and saccharin (0.25% w/v) for 52 days. At the end of this period, rats were killed by decapitation and cannabinoid CB(1) receptor gene expression was measured by in situ hybridization histochemistry. RESULTS: Our results indicated that chronic ethanol consumption reduced cannabinoid CB(1) receptor gene expression in caudate-putamen (CPu) (24%), ventromedial nucleus of the hypothalamus (VMN) (43%), CA1 (27%) and CA2 (22%) fields of hippocampus and increased dentate gyrus (DG) (30%). CONCLUSIONS: These results reveal for the first time that prolonged exposure to ethanol produces marked alterations in cannabinoid CB(1) receptor gene expression in selected regions of the rat brain, supporting an interaction between ethanol consumption and the endogenous cannabinoid receptor. Furthermore, these findings suggest that cannabinoid CB(1) receptor may be considered as a new pharmacological target for treating ethanol dependence. FAU - Ortiz, Sergio AU - Ortiz S AD - Servicio de Psiquiatria y Unidad de Investigacion, Hospital Universitario 12 de Octubre, Madrid, Spain. FAU - Oliva, Jose M AU - Oliva JM FAU - Perez-Rial, Sandra AU - Perez-Rial S FAU - Palomo, Tomas AU - Palomo T FAU - Manzanares, Jorge AU - Manzanares J LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Alcohol Alcohol JT - Alcohol and alcoholism (Oxford, Oxfordshire) JID - 8310684 RN - 0 (RNA, Messenger) RN - 0 (Receptor, Cannabinoid, CB1) RN - 3K9958V90M (Ethanol) SB - IM MH - Alcohol Drinking/*metabolism MH - Animals MH - Brain/drug effects/*metabolism MH - Ethanol/*administration & dosage MH - Gene Expression Regulation/drug effects/physiology MH - Male MH - RNA, Messenger/biosynthesis/genetics MH - Rats MH - Rats, Wistar MH - Receptor, Cannabinoid, CB1/*biosynthesis/genetics EDAT- 2004/03/05 05:00 MHDA- 2004/06/29 05:00 CRDT- 2004/03/05 05:00 PHST- 2004/03/05 05:00 [pubmed] PHST- 2004/06/29 05:00 [medline] PHST- 2004/03/05 05:00 [entrez] AID - 10.1093/alcalc/agh036 [doi] PST - ppublish SO - Alcohol Alcohol. 2004 Mar-Apr;39(2):88-92. doi: 10.1093/alcalc/agh036.