The effects of omega-3 fatty acids monotherapy in Alzheimer's disease and mild cognitive impairment: a preliminary randomized double-blind placebo-controlled study

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Title:	The effects of omega-3 fatty acids monotherapy in Alzheimer's disease and mild cognitive impairment: a preliminary randomized double-blind placebo-controlled study
Authors:	黃士懿 Chiu CC;SU KP;Cheng TC;Liu HC;Chang CJ;Dewey ME;Robert Stewart R;Huang SY
Contributors:	保健營養學系
Date:	2008
Issue Date:	2009-08-16 21:46:08 (UTC+8)
Abstract:	A 24-week, randomized, double-blind placebo-controlled study was carried out to test the feasibility of using omega-3 polyunsaturated fatty acids (PUFAs) monotherapy in people with cognitive impairment and to explore its effects on cognitive function and general clinical condition in these participants. Twenty three participants with mild or moderate Alzheimer's disease and twenty three with mild cognitive impairment were randomized to receive omega-3 PUFAs 1.8 g/day or placebo (olive oil). The data of 35 (76%) participants with at least one post-treatment visit was analyzed. There were no severe adverse effects in either group and it suggests that omega-3 PUFAs were well tolerable in this population. The treatment group showed better improvement on the Clinician's Interview-Based Impression of Change Scale (CIBIC-plus) than those in the placebo group over the 24 week follow-up (p=0.008). There was no significant difference in the cognitive portion of the Alzheimer's Disease Assessment Scale (ADAS-cog) change during follow-up in these two groups. However, the omega-3 fatty acids group showed significant improvement in ADAS-cog compared to the placebo group in participants with mild cognitive impairment (p=0.03), which was not observed in those with Alzheimer's disease. Higher proportions of eicosapentaenoic acid on RBC membranes were also associated with better cognitive outcome (p=0.003). Further studies should be considered with a larger-sample size, diet registration, higher dosages, comparisons between different combinations of PUFAs, and greater homogeneity of participants, especially those with mild Alzheimer's disease and mild cognitive impairment.
Relation:	Progress in Neuro-Psychopharmacology & Biological Psychiatry.(32):1538-1544.
Data Type:	article
Appears in Collections:	[School of Nutrition and Health Sciences] Periodical Articles

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