Weight loss effect of glucagon‐like peptide‐1 mimetics on obese/overweight adults without diabetes: A systematic review and meta‐analysis of randomized controlled trials胰高血糖素样肽‐1类似物对非糖尿病肥胖/超重成人的减重作用：一篇对随机对照试验进行的系统评价及meta分析

Jul 22, 2014Journal of diabetes

Weight loss linked to glucagon-like peptide-1 drugs in overweight and obese adults without diabetes

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Abstract

Participants in GLP-1 receptor agonist groups achieved a larger weight loss of -2.85 kg compared to control groups.

GLP-1 receptor agonists may help reduce body mass index (BMI) and waist circumference (WC) in obese/overweight adults without diabetes.
Systolic blood pressure and triglyceride levels may also benefit from GLP-1 receptor agonist treatment.
Increased nausea and vomiting events were associated with GLP-1 receptor agonist use.
The weight loss effect could be dose-dependent, particularly with liraglutide.

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BACKGROUND: Glucagon-like peptide-1 receptor agonists (GLP-1RAs) benefit weight maintenance for diabetic patients. We performed a systematic review to evaluate its weight loss effect on obese/overweight patients without diabetes in randomized controlled trials (RCTs).

METHODS: Literature updated to May 5, 2014 from Cochrane Library, MEDLINE, EMBASE and reference lists from relevant articles were identified. RCTs with GLP-1 mimetics treating obese/overweight adults without diabetes for at least 12 weeks were assessed. Studies lacking primary measurements were excluded. Three authors extracted data independently. Either fixed-effect or random-effect models were used to calculate weighted mean differences (WMDs), combined relative risks (RR) and 95% confidence interval (CI) in meta-analyses. Intertrial heterogeneity across studies was examined by I(2) and Q statistics.

RESULTS: A total of 1345 individuals retrieved from eight studies were involved and all included trials were of mild-to-moderate bias risks. Participants in GLP-1RA groups achieved a larger weight loss than those in control groups (-2.85 kg, 95%CI -3.55 to -2.14), and liraglutide may work in a dose-dependent fashion. GLP-1RAs also reduced body mass index (BMI) and waist circumferences (WC) and benefited systolic blood pressure and triglyceride regulation. But GLP-1RAs were associated with increased nausea and vomiting events.

CONCLUSIONS: GLP-1 mimetics induce a weight loss in addition to BMI and WC reduction in obese/overweight adults without diabetes. Further long-term randomized trials and basic studies are required to investigate the mechanisms.

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