The failure of p-chlorophenylalanine to affect voluntary alcohol consumption in rats.
1 The effects of p-chlorophenylalanine (PCPA) administered orally and intraperitoneally on rat brain 5-hydroxytryptamine (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) content were compared. The depletion of brain 5-HT and 5-HIAA following PCPA (316 mg/kg) injected intraperitoneally every third day was not significantly different from that following the administration of PCPA (316 mg/kg) by stomach tube on eight consecutive days. 2 Rats tested for alcohol preference before, during and after treatment with PCPA on two intraperitoneal dose regimens (either 316 mg/kg then 100 mg/kg four days later or 316 mg/kg three times at intervals of three days) showed no reduction in voluntary alcohol consumption. 3 The results indicated that depletion of brain 5-HT and 5-HIAA is not responsible for the reduction of voluntary alcohol intake which has been reported to follow chronic oral administration of PCPA to the rat (Myers & Veale, 1968). The possibility of a learned aversion to alcohol due to an association with PCPA administration is discussed.
D000428:Alcohol Drinking / Q000187:drug effects*; D000818:Animals; D001923:Brain Chemistry / Q000187:drug effects; D002755:Choice Behavior / Q000187:drug effects; D010134:Fenclonine / Q000494:pharmacology*; D006897:Hydroxyindoleacetic Acid / Q000032:analysis; D008297:Male; D051381:Rats; D012701:Serotonin / Q000032:analysis
D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D010134:Fenclonine