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J Affect Disord. 2008 Dec;111(2-3):351-9. doi: 10.1016/j.jad.2008.03.008. Epub 2008 May 15.

Depression in Parkinson's disease: a double-blind, randomized, placebo-controlled pilot study of omega-3 fatty-acid supplementation.

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  • 1Laboratório de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Paraná, C.P. 19.031, 81.531-990 Curitiba, PR, Brazil.

Abstract

BACKGROUND:

Effect of fish oil supplementation in parkinsonian patients with depression measured by Montgomery-Asberg Rating Scale (MADRS), the Clinical Global Impressions Scale (CGI) and Beck Depression Inventory (BECK).

METHOD:

Double-blind, placebo-controlled study analyzed depression in 31 patients with Parkinson's Disease and Major Depression (DSM-IV). The patients were double-blind separated in 2 groups that received fish oil (containing omega-3 fatty acids) or mineral oil capsules for 3 months; each group was separated in 2 new groups: one taking antidepressant medication and another one not taking it.

RESULTS:

29 patients completed the 12-week trial, 58% were female and the mean age was 64.4 years old. Patients supplemented with fish oil showed a significant decrease in MADRS and CGI-Depression scores, and there was no difference among groups in BDI. 14 patients (42%) met criteria for > or = 50% reduction in MADRS score, 7 patients (22%) met criteria for remission (final MADRS total score < or = 12), and 2 patients (6%) discontinued supplementation of fish oil. HPLC analysis of fatty-acid profile showed increase of omega-3 fatty acid in the erythrocyte membrane of patients taking fish oil.

CONCLUSION:

These results reveal that PD patients taking fish oil, with or without antidepressants, presented improvement in depressive symptoms and indicate that the intake of omega-3 can be used with an antidepressant effect or as adjuvant therapy with some other medication. This is a first pilot study with parkinsonian patients and omega-3 supplementation and requires replication in a larger sample.

PMID:
18485485
[PubMed - indexed for MEDLINE]
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