Abstract
Background: Mineralocorticoid receptor blockade could be a potential approach for the inhibition of chronic kidney disease (CKD) progression. The benefits and harms of different mineralocorticoid receptor antagonists (MRAs) in CKD are inconsistent. Objectives: The aim of the study was to summarize the benefits and harms of MRAs for CKD patients. Methods: We searched MEDLINE, EMBASE, and the Cochrane databases for trials assessing the effects of MRAs on non-dialysis-dependent CKD populations. Treatment and adverse effects were summarized using meta-analysis. Results: Fifty-three trials with 6 different MRAs involving 22,792 participants were included. Compared with the control group, MRAs reduced urinary albumin-to-creatinine ratio (weighted mean difference [WMD], −90.90 mg/g, 95% CI, −140.17 to −41.64 mg/g), 24-h urinary protein excretion (WMD, −0.20 g, 95% CI, −0.28 to −0.12 g), estimated glomerular filtration rate (eGFR) (WMD, −1.99 mL/min/1.73 m<sup>2</sup>, 95% CI, −3.28 to −0.70 mL/min/1.73 m<sup>2</sup>), chronic renal failure events (RR, 0.86, 95% CI, 0.79–0.93), and cardiovascular events (RR, 0.84, 95% CI, 0.77–0.92). MRAs increased the incidence of hyperkalemia (RR, 2.04, 95% CI, 1.73–2.40) and hypotension (RR, 1.80, 95% CI, 1.41–2.31). MRAs reduced the incidence of peripheral edema (RR, 0.65, 95% CI, 0.56–0.75) but not the risk of acute kidney injury (RR, 0.94, 95% CI, 0.79–1.13). Nonsteroidal MRAs (RR, 0.66, 95% CI, 0.57–0.75) but not steroidal MRAs (RR, 0.20, 95% CI, 0.02–1.68) significantly reduced the risk of peripheral edema. Steroidal MRAs (RR, 5.68, 95% CI, 1.26–25.67) but not nonsteroidal MRAs (RR, 0.52, 95% CI, 0.22–1.22) increased the risk of breast disorders. Conclusions: In the CKD patients, MRAs, particularly in combination with angiotensin-converting enzyme inhibitor/angiotensin receptor blocker, reduced albuminuria/proteinuria, eGFR, and the incidence of chronic renal failure, cardiovascular and peripheral edema events, whereas increasing the incidence of hyperkalemia and hypotension, without the augment of acute kidney injury events. Nonsteroidal MRAs were superior in the reduction of more albuminuria with fewer peripheral edema events and without the augment of breast disorder events.
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