Journal
PROSTAGLANDINS LEUKOTRIENES AND ESSENTIAL FATTY ACIDS
Volume 121, Issue -, Pages 7-13Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.plefa.2017.05.004
Keywords
Eicosapentaenoic acid; Docosahexaenoic acid; Schizophrenia first-episode; Total antioxidant capacity; 8-epi-isoprostane F-2 alpha; Randomized controlled trial
Funding
- Polish National Science Centre [N N402 243435]
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Intervention studies of n-3 polyunsaturated fatty acids (n-3 PUFA) as add-on therapy in patients with schizophrenia have not examined changes in oxidative stress. A randomized placebo-controlled trial of a 26-week intervention composed of 2.2 g/day of n-3 PUFA was found to reduce symptom severity in first-episode schizophrenia patients. The present study is an extension of our previous report, whose secondary aim was to assess the association between the clinical effect of n-3 PUPA and changes in oxidative stress indices. Seventyone patients aged 16-35 were enrolled in the study and randomly assigned to the study arms. Total plasma antioxidant capacity and 8-epi-isoprostane F-2 alpha content were assessed at baseline and at weeks 8 and 26 of the study as secondary outcome measures. Significant changes in oxidative stress indices favouring the intervention group were observed: decreases in 8-isoprostane F-2 alpha (p < 0.001) and increases in total plasma antioxidant capacity (p < 0.001). Significant correlations between changes in clinical scores relevant to symptom severity and changes in oxidative indices were observed. The results of the present study hence suggest that the efficacy of a six-month intervention with n-3 PUFA observed in first-episode schizophrenia may be related to improvement in oxidative stress indices.
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