The effect of R-(+)-[2,3-dihydro-5-methyl-3-[(morpholiny)methyl]pyrolol[1, 2,3-de]-1,4-benzoxazin-yl]-(1-naphthalenyl)methanone mesylate (WIN 55,212-2; a cannabinoid receptor agonist) was investigated on contractions of the bisected (epididymal and prostatic portions) rat vas deferens to assess the role of cannabinoid receptors in sympathetic ATP neurotransmission. WIN 55,212-2 inhibited the electrically induced contractions in both portions of the rat vas deferens. In the presence of the α1-adrenoreceptor antagonist prazosin, electrical stimulation produces a contraction mediated exclusively by ATP. In this condition, WIN 55,212-2 in the prostatic portion elicited a concentration-dependent inhibition that was antagonized by N-piperidinyl-[8- chloro-1-(2,4-dichlorophenyl)-1,4,5,6-tetrahydrobenzo[6,7]cyclohepta[1,2-c] pyrazole-3-carboxamide] (NESS 0327), a selective cannabinoid CB1 receptor antagonist. NESS 0327 caused a parallel dextral displacement of the WIN 55,212-2 concentration-response curve. It is suggested that activation of pre-junctional cannabinoid receptors on sympathetic nerves of the vas deferens modulates ATP neurotransmission. © 2005 Elsevier B.V. All rights reserved.

Modulation of ATP-mediated contractions of the rat vas deferens through presynaptic cannabinoid receptors / Tambaro, S.; Mongeau, R.; Dessi, C.; Pani, L.; Ruiu, S.. - In: EUROPEAN JOURNAL OF PHARMACOLOGY. - ISSN 0014-2999. - 525:1-3(2005), pp. 150-153.

Modulation of ATP-mediated contractions of the rat vas deferens through presynaptic cannabinoid receptors

Pani L.;
2005

Abstract

The effect of R-(+)-[2,3-dihydro-5-methyl-3-[(morpholiny)methyl]pyrolol[1, 2,3-de]-1,4-benzoxazin-yl]-(1-naphthalenyl)methanone mesylate (WIN 55,212-2; a cannabinoid receptor agonist) was investigated on contractions of the bisected (epididymal and prostatic portions) rat vas deferens to assess the role of cannabinoid receptors in sympathetic ATP neurotransmission. WIN 55,212-2 inhibited the electrically induced contractions in both portions of the rat vas deferens. In the presence of the α1-adrenoreceptor antagonist prazosin, electrical stimulation produces a contraction mediated exclusively by ATP. In this condition, WIN 55,212-2 in the prostatic portion elicited a concentration-dependent inhibition that was antagonized by N-piperidinyl-[8- chloro-1-(2,4-dichlorophenyl)-1,4,5,6-tetrahydrobenzo[6,7]cyclohepta[1,2-c] pyrazole-3-carboxamide] (NESS 0327), a selective cannabinoid CB1 receptor antagonist. NESS 0327 caused a parallel dextral displacement of the WIN 55,212-2 concentration-response curve. It is suggested that activation of pre-junctional cannabinoid receptors on sympathetic nerves of the vas deferens modulates ATP neurotransmission. © 2005 Elsevier B.V. All rights reserved.
525
1-3
150
153
Modulation of ATP-mediated contractions of the rat vas deferens through presynaptic cannabinoid receptors / Tambaro, S.; Mongeau, R.; Dessi, C.; Pani, L.; Ruiu, S.. - In: EUROPEAN JOURNAL OF PHARMACOLOGY. - ISSN 0014-2999. - 525:1-3(2005), pp. 150-153.
Tambaro, S.; Mongeau, R.; Dessi, C.; Pani, L.; Ruiu, S.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1212113
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