5,7-Dihydroxytryptamine lesion does not affect ethanol-induced conditioned taste and place aversion in rats

The effect of the lesion of central serotonergic neurons by 5,7-dihydroxytryptamine (5,7-DHT), on ethanol-induced taste and place aversion conditioning was studied in male Wistar rats. Control biochemical analysis revealed that 5,7-DHT (250 μg per rat, free base, ICV) produced marked and selective d...

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Veröffentlicht in:Alcohol (Fayetteville, N.Y.) N.Y.), 1997-09, Vol.14 (5), p.439-443
Hauptverfasser: Bienkowski, Przemyslaw, Iwinska, Krystyna, Piasecki, Jerzy, Kostowski, Wojciech
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Sprache:eng
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Zusammenfassung:The effect of the lesion of central serotonergic neurons by 5,7-dihydroxytryptamine (5,7-DHT), on ethanol-induced taste and place aversion conditioning was studied in male Wistar rats. Control biochemical analysis revealed that 5,7-DHT (250 μg per rat, free base, ICV) produced marked and selective depletion of serotonin (5-HT) in the hippocampal formation and the limbic forebrain complex. Ethanol-induced (1.5 g/kg, IP) conditioned taste aversion (CTA) to saccharin solution was unaffected by the lesion of central serotonergic neurons. The 5,7-DHT-lesioned and sham-lesioned rats showed comparable ethanol-induced CTA even 30 days after the last ethanol injection. Similarly, ethanol-induced (1.5 g/kg, IP) conditioned place aversion (CPA) was unaffected by 5,7-DHT administration. These results suggest that central serotonergic pathways are not primarily involved in the aversive effects of high ethanol doses in rats.
ISSN:0741-8329
1873-6823
DOI:10.1016/S0741-8329(96)00191-7