Combined application of eicosapentaenoic acid and docosahexaenoic acid on depression in women: a meta-analysis of double-blind randomized controlled trials
Authors Yang J, Han D, Qiao Z, Tian X, Qi D, Qiu X, Han Y, Zhou X
Received 14 April 2015
Accepted for publication 18 June 2015
Published 10 August 2015 Volume 2015:11 Pages 2055—2061
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 5
Editor who approved publication: Professor Wai Kwong Tang
Jia-run Yang, Dong Han, Zheng-xue Qiao, Xue Tian, Dong Qi, Xiao-hui Qiu
Department of Medical Psychology, Public Health Institute of Harbin Medical University, Harbin, Heilongjiang Province, People’s Republic of China
Objectives: Previous randomized controlled trials (RCTs) suggest that depression can be effectively treated by omega-3 polyunsaturated fatty acids (PUFAs). Therefore, we conducted this meta-analysis to systematically evaluate the clinical applicability of the combination of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), which are the two major bioactive types of PUFAs, in depressed women.
Methods: RCTs that compared the combination of DHA and EPA to placebo for short-course treatment of depression in women were systematically reviewed up to March 2015. Outcome measurement was the standardized difference in means in clinical measure of depression severity. Random effect model was performed. Meta-regression analysis was performed to assess the effects of baseline depression scores.
Results: Data were obtained from eight RCTs. In these RCTs, 182 patients received placebo and 185 patients received DHA and EPA. The pooled standardized difference in mean was 0.65 with 95% CI = [0.18, 1.12]. There was no relation between the efficacy and the baseline depression scores. The sensitivity analysis found that the combination of EPA and DHA as monotherapy yielded a standardized difference in means of 0.65 (95% CI =0.41, 0.90) without heterogeneity.
Discussion: These results indicate a beneficial effect of the combination of EPA and DHA on depressed mood in women compared with placebo. The clinical applicability of EPA and DHA showed greater promise and should be further explored.
Keywords: depression, omega-3 polyunsaturated fatty acids, PUFAs, docosahexaenoic acid, DHA, eicosapentaenoic acid, EPA
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