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Metformin Treatment and Homocysteine: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.


ABSTRACT: The aim of this systematic review is to assess whether metformin could change the concentration of serum homocysteine (Hcy) with and without simultaneous supplementation of B-group vitamins or folic acid. A literature search was conducted in PubMed, EmBase, and Cochrane Central Register of Controlled Trials (CENTRAL) to identify randomized controlled trials (RCTs) reporting the concentration of serum Hcy in metformin-treated adults. Meta-analysis was applied to assess the association between metformin and the changes of Hcy concentration. Twelve publications were included in this study. In the overall analysis, metformin administration was not statistically associated with the change of Hcy when compared with the control treatment (mean difference (MD), 0.40 ?mol/L; 95% confidence interval (CI), -0.07~0.87 ?mol/L, p = 0.10). In the subgroup analysis, metformin was significantly associated with an increased concentration of Hcy in the absence of exogenous supplementation of folic acid or B-group vitamins (MD, 2.02 ?mol/L; 95% CI, 1.37~2.67 ?mol/L, p < 0.00001), but with a decreased concentration of serum Hcy in the presence of these exogenous supplementations (MD, -0.74 ?mol/L; 95% CI, -1.19~-0.30 ?mol/L, p = 0.001). Therefore, although the overall effect of metformin on the concentration of serum Hcy was neutral, our results suggested that metformin could increase the concentration of Hcy when exogenous B-group vitamins or folic acid supplementation was not given.

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC5188453 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Metformin Treatment and Homocysteine: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Zhang Qianying Q   Li Sheyu S   Li Ling L   Li Qianrui Q   Ren Kaiyun K   Sun Xin X   Li Jianwei J  

Nutrients 20161209 12


The aim of this systematic review is to assess whether metformin could change the concentration of serum homocysteine (Hcy) with and without simultaneous supplementation of B-group vitamins or folic acid. A literature search was conducted in PubMed, EmBase, and Cochrane Central Register of Controlled Trials (CENTRAL) to identify randomized controlled trials (RCTs) reporting the concentration of serum Hcy in metformin-treated adults. Meta-analysis was applied to assess the association between met  ...[more]

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