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Titolo:
ROLE OF LATERAL HYPOTHALAMUS ON FLUID, ELECTROLYTE, AND CARDIOVASCULAR-RESPONSES TO ACTIVATION OF THE MSA
Autore:
HAIBARA AS; SAAD WA; MENANI JV; CAMARGO LADA; RENZI A;
Indirizzi:
PAULISTA STATE UNIV,SCH DENT,DEPT PHYSIOL BR-14801903 ARARAQUARA SP BRAZIL PAULISTA STATE UNIV,SCH DENT,DEPT PHYSIOL BR-14801903 ARARAQUARA SP BRAZIL
Titolo Testata:
The American journal of physiology
fascicolo: 2, volume: 266, anno: 1994,
parte:, 2
pagine: 180000496 - 180000502
SICI:
0002-9513(1994)266:2<180000496:ROLHOF>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDIAL SEPTAL AREA; CHOLINERGIC STIMULATION; RENAL EXCRETION; NATRIURETIC RESPONSES; POTASSIUM EXCRETION; OPIOID RECEPTORS; OPIATE RECEPTORS; BETA-ENDORPHIN; PREOPTIC AREA; RATS;
Keywords:
CARDIOVASCULAR REGULATION; FLUID AND ELECTROLYTE BALANCE; ARTERIAL PRESSURE; CHOLINERGIC ACTIVATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
A.S. Haibara et al., "ROLE OF LATERAL HYPOTHALAMUS ON FLUID, ELECTROLYTE, AND CARDIOVASCULAR-RESPONSES TO ACTIVATION OF THE MSA", The American journal of physiology, 266(2), 1994, pp. 180000496-180000502

Abstract

In this study we investigated the influence of electrolytic lesion orof opioid agonist injections into the lateral hypothalamus (LH) on the dipsogenic, natriuretic, kaliuretic, antidiuretic, presser, and bradycardic effects of cholinergic stimulation of the medial septal area (MSA) in rats. Sham- and LH-lesioned male Holtzman rats received a stainless steel cannula implanted into the LH. Other groups of rats had cannulas implanted simultaneously into the MSA and LH. Carbachol (2 nmol) injection into the MSA induced water intake, presser, and bradycardic responses. LH lesion reduced all of these effects (1-3 and 15-18 days). Previous injection of synthetic opiate agonist, FK-33824 (100 ng),into the LH reduced the water intake, natriuresis, kaliuresis, and presser responses induced by carbachol injected into the MSA. These datashow that both electrolytic lesion or injection of an opiate agonist in the LH reduces the fluid-electrolyte and cardiovascular responses to cholinergic activation of the MSA. The involvement of LH with central excitatory and inhibitory mechanisms related to fluid-electrolytic and cardiovascular control is suggested.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:34:08