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Abstract Title:

Actions of Quercetin, a Polyphenol, on Blood Pressure.

Abstract Source:

Molecules. 2017 Jan 29 ;22(2). Epub 2017 Jan 29. PMID: 28146071

Abstract Author(s):

Yoshinori Marunaka, Rie Marunaka, Hongxin Sun, Toshiro Yamamoto, Narisato Kanamura, Toshio Inui, Akiyuki Taruno

Article Affiliation:

Yoshinori Marunaka

Abstract:

Disorder of blood pressure control causes serious diseases in the cardiovascular system. This review focuses on the anti-hypertensive action of quercetin, a flavonoid, which is one of the polyphenols characterized as the compounds containing large multiples of phenol structural units, by varying the values of various blood pressure regulatory factors, such as vascular compliance, peripheral vascular resistance, and total blood volume via anti-inflammatory and anti-oxidant actions. In addition to the anti-inflammatory and anti-oxidant actions of quercetin, we especially describe a novel mechanism of quercetin's action on the cytosolic Cl(-) concentration ([Cl(-)]c) and novel roles of the cytosolic Cl(-) i.e.: (1) quercetin elevates [Cl(-)]c by activating Na⁺-K⁺-2Cl(-) cotransporter 1 (NKCC1) in renal epithelial cells contributing to Na⁺ reabsorption via the epithelial Na⁺ channel (ENaC); (2) the quercetin-induced elevation of [Cl(-)]c in renal epithelial cells diminishes expression of ENaC leading to a decrease in renal Na⁺ reabsorption; and(3) this reduction of ENaC-mediated Na⁺ reabsorption in renal epithelial cells drops volume-dependent elevated blood pressure. In this review, we introduce novel, unique mechanisms of quercetin's anti-hypertensive action via activation of NKCC1 in detail.

Study Type : Review

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Sayer Ji
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