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RESEARCH ARTICLE
Year : 2019  |  Volume : 4  |  Issue : 1  |  Page : 22-28

Correlation between plasma-soluble angiotensin-converting enzyme 2, anti- angiotensin-converting enzyme 2, and angiotensin-(1–7) in patients with chronic heart failure


1 Department of Cardiology, Jiangbei People's Hospital, Nanjing, China
2 Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China

Correspondence Address:
Xin Zheng Lu
Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, Nanjing
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/cp.cp_3_19

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Background: Angiotensin-converting enzyme 2 (ACE2) is an ACE homolog that converts angiotensin II into angiotensin-(1–7) (Ang-[1–7]). Tumor necrosis factor α (TNF-α), interleukin-1 β, and interleukin-6 are plasma inflammatory cytokines that play a role in the development of hypertension and chronic heart failure (CHF). However, the relationship between soluble ACE2 (sACE2), Anti-ACE2, Ang-(1–7), and the plasma inflammatory cytokines during the development of CHF remains unclear. Methods and Results: A total of 135 patients with CHF were enrolled in this study (63 males and 72 females), with left ventricular ejection fraction (LVEF) <50%. The height and body weight of each patient was measured to calculate the body mass index. The plasma concentrations of N-terminal pro-brain natriuretic peptide (NT-proBNP) were measured using immunofluorescence. The patients were divided into four groups according to the quartiles of NT-proBNP levels. The plasma concentrations of sACE2, anti-ACE2, Ang-(1–7), and TNF-α were measured by enzyme-linked immunosorbent assay. The plasma ACE2, anti-ACE2, Ang-(1–7), and TNF-α levels in CHF patients increased with increasing NT-proBNP levels (P < 0.01). The plasma sACE2, anti-ACE2, Ang-(1–7), and TNF-α levels were positively correlated with NT-proBNP levels (r = 0.587, r = 0.949, r = 0.614, and r = 0.711, respectively; P < 0.01). Multiple linear regression analysis showed that TNF-α, Ang-(1–7), and LVEF are independent predictors for NT-proBNP in patients with CHF. Conclusions: The plasma sACE2, anti-ACE2, Ang-(1–7), and TNF-α levels increased in CHF patients with increasing NT-proBNP levels. The simultaneous detection of these markers is significant for diagnosing patients with CHF.


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