Morphine and dynorphin(1-13) microinjected into the medial preoptic area and nucleus accumbens: effects on sexual behavior in male rats.
Brain Res
; 524(1): 77-84, 1990 Jul 30.
Article
em En
| MEDLINE
| ID: mdl-1976031
ABSTRACT
The effects on sexual behavior of opiate receptor stimulation within A10 and A14 terminal areas were examined in the following experiments. Morphine (0.01-6 nmol) and dynorphin(1-13) (0.01-3 pmol) were microinjected into the medial preoptic area (MPOA). Morphine (10-100 pmol) and dynorphin (10-100 fmol) injected into the MPOA reduced both the latency to ejaculate and the number of intromissions triggering ejaculation. Morphine (6 nmol) produced a failure to resume copulating following the second ejaculation. Morphine (1-10 nmol) injected into the nucleus accumbens (ACC) shortened the latency to the first intromission and lengthened the second postejaculatory interval. Naloxone (3 mg/kg i.p.) reversed the effects of morphine on intromission latency and attenuated the lowering of ejaculatory threshold.
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Base de dados:
MEDLINE
Assunto principal:
Fragmentos de Peptídeos
/
Área Pré-Óptica
/
Núcleos Septais
/
Comportamento Sexual Animal
/
Dinorfinas
/
Morfina
/
Núcleo Accumbens
Limite:
Animals
Idioma:
En
Revista:
Brain Res
Ano de publicação:
1990
Tipo de documento:
Article