This study aimed to perform a systematic review and meta-analysis of randomized controlled trials (RCTs) in order to calculate the effect size of statin therapy in changing plasma cortisol concentrations. Following a systematic search in Medline, SCOPUS, Web of Science and Google Scholar databases (by up to March 01, 2015), 7 eligible RCTs were selected. Random-effects meta-analysis suggested a significant increase in plasma cortisol concentrations following statin therapy (WMD: 6.34%, 95% CI: 1.80, 10.87, p=0.006). Subgroup analysis confirmed the significance of the effect with lipophilic statins comprising atorvastatin, simvastatin, and lovastatin (WMD: 7.00%, 95% CI: 2.21, 11.79, p=0.004) but not with hydrophilic statins (rosuvastatin and pravastatin) (WMD: 0.60%, 95% CI: -13.46, 14.66, p=0.933). In the meta-regression analysis, changes in plasma cortisol concentrations following statin therapy were found to be independent of treatment duration. Results of this meta-analysis of RCTs suggest a significant elevation in plasma cortisol levels following statin therapy.

Biomedical Research Unit Mexican Social Security Institute Durango Mexico

Biotechnology Research Center Mashhad University of Medical Sciences Mashhad Iran; Metabolic Research Centre Royal Perth Hospital School of Medicine and Pharmacology University of Western Australia Perth Australia

Charles University Prague Faculty of Pharmacy in Hradec Kralove Department of Biological and Medical Sciences Hradec Kralove Czech Republic

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