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Titolo:
ACUTE AND CHRONIC ARECOLINE - EFFECTS ON A SCOPOLAMINE-INDUCED DEFICIT IN COMPLEX MAZE-LEARNING
Autore:
BRATT AM; KELLY ME; DOMENEY AM; NAYLOR RJ; COSTALL B;
Indirizzi:
MEMPHIS STATE UNIV,DEPT PSYCHOL MEMPHIS TN 38152 UNIV BRADFORD,SCH PHARM,POSTGRAD STUDIES PHARMACOL BRADFORD BD7 1DP WYORKSHIRE ENGLAND
Titolo Testata:
Pharmacology, biochemistry and behavior
fascicolo: 3, volume: 53, anno: 1996,
pagine: 713 - 721
SICI:
0091-3057(1996)53:3<713:AACA-E>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOREBRAIN CHOLINERGIC SYSTEM; 14-UNIT T-MAZE; ALZHEIMERS-DISEASE; BASAL FOREBRAIN; SENILE DEMENTIA; WORKING MEMORY; ACETYLCHOLINE-RELEASE; AGONIST ARECOLINE; RAT HIPPOCAMPUS; DRUGS;
Keywords:
STONE MAZE; ARECOLINE; SCOPOLAMINE; MEMORY AND LEARNING; CHOLINERGIC SYSTEM; CONTINUOUS DRUG INFUSION; OSMOTIC MINIPUMPS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
66
Recensione:
Indirizzi per estratti:
Citazione:
A.M. Bratt et al., "ACUTE AND CHRONIC ARECOLINE - EFFECTS ON A SCOPOLAMINE-INDUCED DEFICIT IN COMPLEX MAZE-LEARNING", Pharmacology, biochemistry and behavior, 53(3), 1996, pp. 713-721

Abstract

These studies tested the effect of arecoline, a nonselective muscarinic agonist, administered either acutely or by chronic peripheral infusion via osmotic minipumps, on a scopolamine-induced deficit in a Stone(14 unit) T-maze task in rats. Scopolamine alone (0.125-1.0 mg/kg, IF) dose-dependently impaired maze acquisition, increasing maze ran-times and to a lesser extent, the number of errors committed. Neither acute administration of arecoline (5.0 and 10.0 mg/kg, IF), when tested against a deficit induced by scopolamine (0.25 mg/kg, IF), nor chronic arecoline administration (30 and 50 mg/kg per 24 h), when tested against a deficit induced by scopolamine (0.5 mg/kg), were able to ameliorate the decrements in maze performance. In fact, the higher dose of arecoline (50 mg/kg per 24 h) infused over 10 days potentiated the scopolamine-induced deficit, with respect to latency. These data indicate that dose selection is of great importance when employing arecoline in tests of learning and memory and that the influence of the method of administration of arecoline on the behavioural outcome warrants further study.

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Documento generato il 25/01/20 alle ore 18:33:03