Data di Pubblicazione:
1989
Citazione:
Effects of brain histamine depletion on stimulated prolactin release in rats / C. Netti, F. Guidobono, V. Sibilia, E. Cazzamalli, I. Villa, A. Pecile. - In: AGENTS AND ACTIONS. - ISSN 0065-4299. - 27:1-2(1989 Apr), pp. 117-119.
Abstract:
We examined the effects of an irreversible inhibitor of brain histamine (HA) synthesis, alpha-fluoromethyl-histidine (alpha-FMH), on prolactin (PRL) release induced by an opiate agonist (morphine, M) or by a serotonergic agonist (MK212). alpha-FMH was administered intracerebroventricularly (i.c.v., 200 micrograms/rat) into freely moving rats with indwelling catheters in the carotid. M (6 mg/kg, intracarotid, i.a.) was administered simultaneously with or 3 h after alpha-FMH. MK212 (2.5 mg/kg, i.a.) was administered 3 h after alpha-FMH. Blood samples for assay for PRL were drawn at 0, 10, 20, 40 min after M or MK212 administration. alpha-FMH (3 h before) significantly reduced the PRL-releasing effect of M and MK212 but did not modify PRL release by M when administered simultaneously. The present results showing that the facilitatory actions of the opiate and serotonergic systems on PRL are impaired when brain HA synthesis is reduced, suggest that there is an HA-dependent step in opiate and serotonergic control of PRL.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Rats, Inbred Strains; Rats; Prolactin; Pyrazines; Morphine; Methylhistidines; Animals; Brain; Male; Histamine
Elenco autori:
C. Netti, F. Guidobono, V. Sibilia, E. Cazzamalli, I. Villa, A. Pecile
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