Angiotensin II and sympathoactivation in heart failure.
J Card Fail
; 5(2): 139-45, 1999 Jun.
Article
in En
| MEDLINE
| ID: mdl-10404353
ABSTRACT
Excessive activity of the sympathetic nervous system (SNS) contributes to the development and progression of the syndrome of congestive heart failure (CHF) in patients with decreased left ventricular function. The factors underlying chronic sympathoactivation are poorly understood, particularly in stable patients. This review summarizes both clinical and experimental data regarding the effects of angiotensin II (A-II) on the activity of the SNS. The focus is on both the direct effects of A-II on the SNS and an indirect effect medicated through alteration in function of the baroreflex. Available evidence is consistent with a potentially important effect of A-II on SNS activity, perhaps most likely via the baroreflex. Important issues regarding the direct effect of A-II on regional SNS activity, and on the physiological relevance of effects seen only at high plasma concentration of A-II remain to be fully elucidated.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Renin-Angiotensin System
/
Angiotensin II
/
Heart Failure
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
J Card Fail
Journal subject:
CARDIOLOGIA
Year:
1999
Document type:
Article
Affiliation country:
United States