PMID- 2385646 OWN - NLM STAT- MEDLINE DCOM- 19900920 LR - 20190712 IS - 0031-9384 (Print) IS - 0031-9384 (Linking) VI - 47 IP - 4 DP - 1990 Apr TI - Alcohol-preferring rats: genetic sensitivity to alcohol-induced stimulation of dopamine metabolism. PG - 727-9 AB - The effect of ethanol on brain dopamine (DA) metabolism in the caudate nucleus (CN), olfactory tubercle (OT) and medial prefrontal cortex (MPFC) was compared in two selectively bred rat lines, one ethanol preferring and the other ethanol nonpreferring. Male rats from the 16th and 17th generations of both lines that never experienced ethanol beforehand were used. No differences in the basal concentrations of DA and its metabolites, DOPAC and HVA, in the above brain regions were found between the two lines. The oral administration of 2 g/kg of ethanol to ethanolnonpreferring rats increased DOPAC and HVA and reduced DA levels in the CN and OT but was ineffective in the MPFC. On the other hand, ethanol administration to ethanol-preferring rats decreased DA content and increased DOPAC and HVA levels, not only in the CN and OT, but also in the MPFC. Moreover, the changes induced by ethanol on DA metabolism in the latter group were significantly greater than in ethanol nonpreferring rats. These results indicate that ethanol preferring rats have a genetic high sensitivity to the ethanol effect on DA metabolism, and suggest that such a trait might play a role in ethanol preference. FAU - Fadda, F AU - Fadda F AD - Department of Neurosciences, University of Cagliari, Italy. FAU - Mosca, E AU - Mosca E FAU - Colombo, G AU - Colombo G FAU - Gessa, G L AU - Gessa GL LA - eng PT - Journal Article PL - United States TA - Physiol Behav JT - Physiology & behavior JID - 0151504 RN - 0 (Receptors, Dopamine) RN - 102-32-9 (3,4-Dihydroxyphenylacetic Acid) RN - VTD58H1Z2X (Dopamine) RN - X77S6GMS36 (Homovanillic Acid) SB - IM MH - 3,4-Dihydroxyphenylacetic Acid/metabolism MH - Alcohol Drinking/*physiology MH - Animals MH - Arousal/*drug effects MH - Brain Mapping MH - Caudate Nucleus/*drug effects MH - Dopamine/*physiology MH - Frontal Lobe/*drug effects MH - Homovanillic Acid/metabolism MH - Male MH - Motivation MH - Neural Pathways/drug effects MH - Olfactory Bulb/*drug effects MH - Rats MH - Rats, Inbred Strains MH - Receptors, Dopamine/*genetics MH - *Species Specificity EDAT- 1990/04/01 00:00 MHDA- 1990/04/01 00:01 CRDT- 1990/04/01 00:00 PHST- 1990/04/01 00:00 [pubmed] PHST- 1990/04/01 00:01 [medline] PHST- 1990/04/01 00:00 [entrez] AID - 0031-9384(90)90085-I [pii] AID - 10.1016/0031-9384(90)90085-i [doi] PST - ppublish SO - Physiol Behav. 1990 Apr;47(4):727-9. doi: 10.1016/0031-9384(90)90085-i.