Bujak-Gizycka B, Olszanecki R, Suski M, Madek J, Stachowicz A, Korbut R. Angiotensinogen metabolism in rat aorta: robust formation of proangiotensin-12.
J Physiol Pharmacol 2010;
61:679-682. [PMID:
21224498]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 12/09/2010] [Indexed: 05/30/2023]
Abstract
Renin-angiotensin system (RAS) plays important role in the regulation of vessel wall homeostasis. Proangiotensin-12 (proAng-12, Ang-(1-12)) is a newly characterized metabolite of angiotensinogen, formed in array of organs of rats, which may serve as an alternate substrate for local angiotensin production, by-passing the traditional renin-dependent conversion of angiotensinogen to angiotensin I. In this work using LC/MS method we identified proAng-12 as a main product of angiotensinogen metabolism ex vivo, in organ-bath of rat aortic tissue. In this setting, proAng-12 appeared to be not only prevalent metabolite of angiotensinogen, but also served as a substrate for generation of Ang I and subsequently, Ang II. The functional significance of this surprising finding requires further investigation.
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