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|Title:||Effect of dietary n-3 polyunsaturated fatty acids on brain lipid fatty acid composition, learning ability, and memory of senescence-accelerated mouse|
|Citation:||Journals of Gerontology Series A-Biological Sciences and Medical Sciences, 2008; 63(11):1153-1160|
|Publisher:||Gerontological Society of America|
|Anna L. Petursdottir, Susan A. Farr, John E. Morley, William A. Banks and Gudrun V. Skuladottir|
|Abstract:||Animal studies have shown that a deficiency in brain of the n-3 polyunsaturated fatty acid (PUFA) docosahexaenoic acid (DHA) is associated with memory loss and diminished cognitive function. The senescence-accelerated prone 8 (SAMP8) mouse develops impairments in learning and memory at 8–12 months of age. The effect of diet supplemented with n-3 PUFA on brain phospholipid DHA status, learning, and memory ability in aged SAMP8 mice was investigated. At the age of 10 months, SAMP8 mice were fed either a low-DHA or a high-DHA diet for 8 weeks. In comparison to SAMP8 mice fed the low-DHA diet, those fed a high-DHA diet had improved acquisition and retention in a T-maze foot shock avoidance test and a higher proportion of DHA in hippocampal and amygdala phospholipids. This study demonstrates that, in mature animals, DHA is incorporated into brain phospholipids and that dietary n-3 PUFA is associated with delay in cognitive decline.|
|Keywords:||Alzheimer's disease; n-3 Polyunsaturated fatty acids; Docosahexaenoic acid; Hippocampus; Memory|
|Rights:||Copyright 2008 by The Gerontological Society of America|
|Appears in Collections:||Medicine publications|
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