The renin-angiotensin system traditionally has been conceived as a neuroendocrine system functioning in the circulation. Recent research has confirmed the existence of autocrine/ paracrine tissue renin-angiotensin systems present and functioning at multiple sites, including cardiac, vascular, and renal tissues, which contain the majority of angiotensinconverting enzyme in the body. It appears that the circulating renin-angiotensin system is activated acutely to maintain homeostasis and is then turned off at cardiovascular compensation, while the tissue renin-angiotensin systems exert long-term actions that affect cardiovascular function and structure, which may play a pathophysiological role in congestive heart failure, hypertension, and vascular disease and influence the response to therapy with angiotensin-converting enzyme-inhibiting agents.
(Arch Intern Med. 1993;153:937-942)
Dzau VJ. Tissue Renin-Angiotensin System in Myocardial Hypertrophy and Failure. Arch Intern Med. 1993;153(8):937–942. doi:10.1001/archinte.1993.00410080011002
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