Omega-3 fatty acids (ῳ-3 fatty acids) in epilepsy: animal models and human clinical trials
Abstract
INTRODUCTION: There is growing interest in alternative and nutritional therapies for drug resistant epilepsy. ῳ-3 fatty acids such as fish or krill oil are widely available supplements used to lower triglycerides and enhance cardiovascular health. ῳ-3 fatty acids have been studied extensively in animal models of epilepsy. Yet, evidence from randomized controlled clinical trials in epilepsy is at an early stage. AREAS COVERED: This report focuses on the key ῳ-3 fatty acids DHA and EPA, their incorporation into the lipid bilayer, modulation of ion channels, and mechanisms of action in reducing excitability within the central nervous system. This paper presents pre-clinical evidence from mouse, rat, and canine models, and reports the efficacy of n-3 fatty acids in randomized controlled clinical trials. An English language search of PubMed and Google scholar for the years 1981-2016 was performed for animal studies and human randomized controlled clinical trials. Expert commentary: Basic science and animal models provide a cogent rationale and substantial evidence for a role of ῳ-3 fatty acids in reducing seizures. Results in humans are limited. Recent Phase II RCT evidence suggests that low to moderate dose of ῳ-3 fatty acids reduce seizures; however, larger multicenter randomized trials are needed to confirm or refute the evidence. The safety, health effects, low cost and ease of use make ῳ-3 fatty acids an intriguing alternative therapy for drug resistant epilepsy. Though…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design.
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