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Titolo:
The muscarinic receptor agonist xanomeline has an anti psychotic-like profile in the rat
Autore:
Stanhope, KJ; Mirza, NR; Bickerdike, MJ; Bright, JL; Harrington, NR; Hesselink, MB; Kennett, GA; Lightowler, S; Sheardown, MJ; Syed, R; Upton, RL; Wadsworth, G; Weiss, SM; Wyatt, A;
Indirizzi:
Vernalis Res Ltd, Winnersh, Wokingham, England Vernalis Res Ltd Winnersh Wokingham England Winnersh, Wokingham, England
Titolo Testata:
JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS
fascicolo: 2, volume: 299, anno: 2001,
pagine: 782 - 792
SICI:
0022-3565(200111)299:2<782:TMRAXH>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONDITIONED AVOIDANCE-RESPONSE; ANTIPSYCHOTIC-LIKE ACTIVITY; PREPULSE INHIBITION; NUCLEUS-ACCUMBENS; CHOLINERGIC MODULATION; PREFRONTAL CORTEX; STARTLE RESPONSE; ANIMAL-MODELS; DRUGS; SCHIZOPHRENIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Mirza, NR NeuroSearch AS, Pharmacol, 93 Pederstrupvej, DK-2750 Ballerup, Denmark NeuroSearch AS 93 Pederstrupvej Ballerup Denmark DK-2750 enmark
Citazione:
K.J. Stanhope et al., "The muscarinic receptor agonist xanomeline has an anti psychotic-like profile in the rat", J PHARM EXP, 299(2), 2001, pp. 782-792

Abstract

The muscarinic receptor agonist xanomeline was examined and compared with the antipsychotics clozapine and/or haloperidol in the following in vivo rat models: apomorphine-induced disruption of prepulse inhibition (PPI), amphetamine-induced hyperlocomotion, and the conditioned emotional response (CER) test. The effects of xanomeline were also assessed ex vivo on dopamine turnover in the rat medial prefrontal cortex. Under conditions of varying dose and prepulse intensity, xanomeline, like haloperidol, had no effect on PPI. In contrast, the muscarinic receptor antagonist scopolamine and the muscarinic receptor agonist pilocarpine both induced significant dose-dependent deficits in PPI. Haloperidol and xanomeline, but not pilocarpine, dose dependently reversed apomorphine-induced disruption of PPI. Thus, xanomeline induced a clear anti psychotic-like effect in PPI, whereas pilocarpine appeared to induce a psychotomimetic-like effect. Xanomeline attenuated amphetamine-induced hyperactivity at doses that had no effect on spontaneous activity, possibly indicating a separation between attenuation of limbic hyperdopaminergic function and the induction of hypolocomotion. Haloperidol and clozapine also reversed amphetamine-induced hyperlocomotion, but at similar doses to those that reduced spontaneous locomotion. Clozapine, but not haloperidol had an anxiolytic-like effect in the CER test. The effects of xanomeline in the CER test were similar to those of clozapine, although at the anxiolytic dose it tended to disrupt baseline levels of lever pressing. Finally, haloperidol, clozapine, pilocarpine, and xanomeline, all induced an increase in dopamine turnover in medial prefrontal cortex. The antipsychotic-like effects of xanomeline in the animal models used here suggest that it may be a useful treatment for psychosis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/01/20 alle ore 01:19:03