Omega-3 Polyunsaturated Fatty Acids Supplementation Alleviate Anxiety Rather Than Depressive Symptoms Among First-Diagnosed, Drug-Naïve Major Depressive Disorder Patients: A Randomized Clinical Trial

Overview

Journal Front Nutr

Specialty Nutritional Sciences

Date 2022 Jul 29

PMID 35903448

Authors

Rong Yang

Lu Wang

Kun Jin

Song Cao

Chujun Wu

Jimin Guo

Jindong Chen

Hui Tang

Mimi Tang

Affiliations

Soon will be listed here.

Abstract

Background: Omega-3 polyunsaturated fatty acids (n-3 PUFAs) augmentation of antidepressants has shown great potential in the prevention and treatment of major depressive disorders (MDD).

Objective: To investigate the effect of n-3 PUFAs plus venlafaxine in patients with first-diagnosed, drug-naïve depression.

Method: A total of 72 outpatients with first-diagnosed depression were recruited. The daily dose of 2.4 g/day n-3 PUFAs or placebo plus venlafaxine was used for over 12 weeks. The outcomes were assessed by the Hamilton depression scale (HAMD), Hamilton anxiety scale (HAMA), Beck depression inventory (BDI), and Self-rating anxiety scale (SAS).

Results: Both groups exhibited improvement on clinical characteristics at week 4 and week 12 compared with baseline. The rate of responders for anxiety in n-3 PUFAs group (44.44%) was significantly higher than that in placebo group (21.21%) at week 4 (χ = 4.182, = 0.041), while week 12 did not show a difference (χ = 0.900, = 0.343). The rate of responders for depression at both week 4 (χ = 0.261, = 0.609) and week 12 (χ = 1.443, = 0.230) showed no significant difference between two groups. Further analysis found that Childhood Trauma Questionnaire (CTQ) had positive correlation with HAMA ( = 0.301, = 0.012), SAS ( = 0.246, = 0.015), HAMD ( = 0.252, = 0.038) and BDI ( = 0.233, = 0.022) with Pearson correlation analysis. Social Support Rating Scale (SSRS) had negative correlation with SAS ( = -0.244, = 0.015) and BDI ( = -0.365, = 0.000).

Conclusion: This trial found that n-3 PUFAs supplementation in favor of venlafaxine alleviated the anxiety symptoms rather than depressive symptoms at the early stage of treatment (4 weeks) for first-diagnosed, drug-naïve depressed patients. However, the advantage disappeared in long-term treatment. Furthermore, childhood abuse and social support are closely related to the clinical and biological characteristics of depression. Both childhood trauma and lack of social support might be predictors of poor prognosis in depression.

Clinical Trial Registration: [clinicaltrials.gov], identifier [NCT03295708].

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