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Baroreceptor reflex in heart failure

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Author:
No author available
Journal Title:
ACTA PHYSIOLOGICA SINICA
Issue:
3
DOI:
10.3321/j.issn:0371-0874.2004.03.001
Key Word:
压力感受器反射;化学感受器反射;心力衰竭;血管紧张素Ⅱ;活性氧;运动训练;baroreceptor reflex;chemoreceptor reflex;heart failure;angiotensin Ⅱ;reactive oxygen species;exercise training

Abstract: Congestive heart failure is a syndrome that is usually initiated by a reduction in pump function of the heart, i.e. a decrease in cardiac output. Initially, a reduction in cardiac output leads to unloading of baroreceptor reflex that, in turn, increases heart rate through vago-sympathetic mechanisms and total peripheral resistance via an increase in sympathetic outflow to vascular beds. In this review we are thinking on how baroreceptor reflex plays a role in the abnormal control of the circulation in heart failure. This review and our recent studies suggest that: (1) baroreceptor reflex is blunted in heart failure; (2) central angiotensin Ⅱ and reactive oxygen species play an important role in blunted baroreceptor reflex; (3) cardiac sympathetic afferent stimulation and chemoreceptor reflex inhibit baroreceptor reflex; and (4) exercise training normalizes abnormal reflexes in the heart failure state.

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