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Titolo:
BAROREFLEX CONTROL OF SYMPATHETIC ACTIVITY IN EXPERIMENTAL-HYPERTENSION
Autore:
IRIGOYEN MCC; KRIEGER EM;
Indirizzi:
UNIV SAO PAULO,HOSP CLIN,FAC MED,INST CORACAO,UNIDADE HIPERTENSAO,AV ENEAS C AGUIAR 44 BR-05403000 SAO PAULO BRAZIL UNIV SAO PAULO,HOSP CLIN,FAC MED,INST CORACAO,UNIDADE HIPERTENSAO BR-05403000 SAO PAULO BRAZIL UNIV FED RIO GRANDE SUL,INST CIENCIAS BASICAS SAUDE,DEPT FISIOL PORTOALEGRE RS BRAZIL
Titolo Testata:
Brazilian journal of medical and biological research
fascicolo: 9, volume: 31, anno: 1998,
pagine: 1213 - 1220
SICI:
0100-879X(1998)31:9<1213:BCOSAI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
SINOAORTIC DENERVATED RATS; HEART-RATE-VARIABILITY; BARORECEPTOR REFLEX; ARTERIAL-PRESSURE; CALIBER CHANGES; CONSCIOUS RATS; NERVE ACTIVITY; ANGIOTENSIN; MODULATION; FACILITATION;
Keywords:
BAROREFLEX; SYMPATHETIC ACTIVITY; SINOAORTIC DENERVATION; HIGH-RENIN HYPERTENSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
M.C.C. Irigoyen e E.M. Krieger, "BAROREFLEX CONTROL OF SYMPATHETIC ACTIVITY IN EXPERIMENTAL-HYPERTENSION", Brazilian journal of medical and biological research, 31(9), 1998, pp. 1213-1220

Abstract

The arterial baroreceptor reflex system is one of the most powerful and rapidly acting mechanisms for controlling arterial pressure. The purpose of the present review is to discuss data relating sympathetic activity to the baroreflex control of arterial pressure in two differentexperimental models: neurogenic hypertension by sinoaortic denervation (SAD) and high-renin hypertension by total aortic ligation between the renal arteries in the rat. SAD depresses baroreflex regulation of renal sympathetic activity in both the acute and chronic phases. However, increased sympathetic activity (100%) was found only in the acute phase of sinoaortic denervation. In the chronic phase of SAD average discharge normalized but the pattern of discharges was different from that found in controls. High-renin hypertensive rats showed overactivityof the renin angiotensin system and a great depress:on of the baroreflexes, comparable to the depression observed in chronic sinoaortic denervated rats. However, there were no differences in the average tonic sympathetic activity or changes in the pattern of discharges in high-renin rats. We suggest that the difference in the pattern of dischargesmay contribute to the increase in arterial pressure lability observedin chronic sinoaortic denervated rats.

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Documento generato il 20/09/20 alle ore 20:15:32