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Digitale Medien

Systemic injection of pirenzepine induces a deficit in passive avoidance learning in rats (1989)

Worms, P. ; Gueudet, C. ; Pério, A. ; [weitere]

Springer

Psychopharmacology 98 (1989), S. 286-288

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Details

ISSN: 1432-2072

Schlagwort(e): IP pirenzepine ; Passive avoidance ; Brain penetration ; Rat

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract When injected IP, the M1 muscarinic receptor antagonist pirenzepine dose-dependently induced a deficit in passive avoidance learning in rats. This activity was optimal at 75 mg/kg injected 1 h before the acquisition session. The deficit induced by pirenzepine was antagonized by oxotremorine (0.03–0.3 mg/kg SC) and physostigmine (0.1 mg/kg SC), but not neostigmine. By comparison, under the same experimental conditions, physostigmine and oxotremorine also antagonized the deficit induced by an equipotent dose of scopolamine (0.5 mg/kg IP), although the activity of physostigmine appeared stronger against scopolamine than against pirenzepine. These results suggest that pirenzepine could produce a centrally-mediated behavioural disruption when injected systemically.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00444707

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