• Jian Shen, Yan-Mei Huang, Xin-Nan Song, Xue-Zhi Hong, Min Wang, Wei Ling, Xiao-Xi Zhang, and Hai-Lu Zhao.
• Center for Diabetic Systems Medicine, Guilin Medical University, China Department of pathology, Affiliated Hospital of Guilin Medical University, China.
• J Renin Angiotensin Aldosterone Syst. 2016 Jul 1; 17 (3).

IntroductionAngiotensin-converting enzyme inhibitors (ACEis) and angiotensin receptor blockers (ARBs) are widely used to block the renin-angiotensin system (RAS). Yet it remains uncertain whether these drugs are equally effective and safe.MethodsSystematic reviews and meta-analyses of ACEis/ARBs in diabetes and kidney disease published in PubMed, Chinese National Knowledge Infrastructure (CNKI) and Wanfang databases were searched for clinical outcomes including all-cause mortality, end-stage renal disease (ESRD), hyperkalemia and cough.ResultsEight meta-analyses included 2177-61,264 patients with follow-up of 6-108 months. RAS blockers reduced mortality (relative risk ratio (RR), 0.90, 95% confidence interval (CI), 0.86-0.95) without heterogeneity. The death protection was significant specifically with ACEis (RR, 0.85, 95% CI, 0.79-0.91), but not with ARBs. Protection against ESRD was homogenously evident by ARBs (RR, 0.79, 95% CI, 0.73-0.87), ACEis (RR, 0.79, 95% , 0.64-0.94), and both (RR, 0.79, 95% CI, 0.73-0.87). Significant side effects were hyperkalemia by ARBs (RR, 2.44, 95% CI, 1.13-5.26), and cough by ACEis (RR, 2.38, 95% CI, 1.75-3.22) CONCLUSIONS: In patients with diabetes and kidney disease, ACEis and ARBs are consistently protective for the development of ESRD. Use of ACEis alone additionally reduces deaths and increases the risk for cough. Use of ARBs alone increases the risk for hyperkalemia without additional benefit of death protection.© The Author(s) 2016.

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