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15.07.2016 | Original Article | Ausgabe 3/2017

Heart and Vessels 3/2017

Serum angiotensin-converting enzyme 2 concentration and angiotensin-(1–7) concentration in patients with acute heart failure patients requiring emergency hospitalization

Zeitschrift:
Heart and Vessels > Ausgabe 3/2017
Autoren:
Shinji Hisatake, Shunsuke Kiuchi, Takayuki Kabuki, Takashi Oka, Shintaro Dobashi, Takanori Ikeda

Abstract

The existence of a new cascade, angiotensin-converting enzyme (ACE) 2/angiotensin (Ang)-(1–7)/Mas receptor axis, has been recently established in the renin–angiotensin system. However, the dynamics of this cascade under various pathological conditions in clinical settings is still unclear. Forty-nine patients who underwent emergency hospitalization because of acute heart failure (AHF) consented to participate in this study. Thirty-eight healthy volunteers served as controls. Serum ACE activity, ACE2, Ang-(1–7) concentration, plasma Ang II, aldosterone concentration, and plasma renin activity (PRA) were measured at the acute stage. We conducted a comparative study between patients with AHF and healthy volunteers. Patients with AHF showed lower serum ACE activity and plasma aldosterone concentration than healthy volunteers (12.3 vs. 15.1 IU/L, respectively; P = 0.01, 75.6 vs. 125.3 pg/mL, respectively; P = 0.000); there were no differences between the two groups in PRA and plasma Ang II concentration. Patients with AHF had a higher serum ACE2 concentration than healthy volunteers (7.9 vs. 4.8 ng/mL, respectively; P = 0.002), but their serum Ang-(1–7) concentration was significantly lower (2.4 vs 3.1 ng/mL, respectively; P = 0.005). Patients with AHF had a higher serum ACE2 concentration, lower serum Ang-(1–7) concentration, and lower serum ACE activity and plasma aldosterone concentrations than healthy volunteers, whereas PRA and plasma Ang II concentration were the same.

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