PMID- 18620024 OWN - NLM STAT- MEDLINE DCOM- 20081218 LR - 20220317 IS - 0306-4522 (Print) IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 155 IP - 3 DP - 2008 Aug 26 TI - Docosahexaenoic acid dietary supplementation enhances the effects of exercise on synaptic plasticity and cognition. PG - 751-9 LID - 10.1016/j.neuroscience.2008.05.061 [doi] AB - Omega-3 fatty acids (i.e. docosahexaenoic acid; DHA), similar to exercise, improve cognitive function, promote neuroplasticity, and protect against neurological lesion. In this study, we investigated a possible synergistic action between DHA dietary supplementation and voluntary exercise on modulating synaptic plasticity and cognition. Rats received DHA dietary supplementation (1.25% DHA) with or without voluntary exercise for 12 days. We found that the DHA-enriched diet significantly increased spatial learning ability, and these effects were enhanced by exercise. The DHA-enriched diet increased levels of pro-brain-derived neurotrophic factor (BDNF) and mature BDNF, whereas the additional application of exercise boosted the levels of both. Furthermore, the levels of the activated forms of CREB and synapsin I were incremented by the DHA-enriched diet with greater elevation by the concurrent application of exercise. While the DHA diet reduced hippocampal oxidized protein levels, a combination of a DHA diet and exercise resulted in a greater reduction rate. The levels of activated forms of hippocampal Akt and CaMKII were increased by the DHA-enriched diet, and with even greater elevation by a combination of diet and exercise. Akt and CaMKII signaling are crucial step by which BDNF exerts its action on synaptic plasticity and learning and memory. These results indicate that the DHA diet enhanced the effects of exercise on cognition and BDNF-related synaptic plasticity, a capacity that may be used to promote mental health and reduce risk of neurological disorders. FAU - Wu, A AU - Wu A AD - Department of Physiological Science, University of California at Los Angeles, 621 Charles E. Young Drive, Los Angeles, CA 90095, USA. FAU - Ying, Z AU - Ying Z FAU - Gomez-Pinilla, F AU - Gomez-Pinilla F LA - eng GR - R01 NS050465/NS/NINDS NIH HHS/United States GR - NS50465/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20080617 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 25167-62-8 (Docosahexaenoic Acids) RN - EC 2.3.1.48 (CREB-Binding Protein) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 2) SB - IM MH - Analysis of Variance MH - Animals MH - Behavior, Animal/drug effects MH - Brain-Derived Neurotrophic Factor/metabolism MH - CREB-Binding Protein/metabolism MH - Calcium-Calmodulin-Dependent Protein Kinase Type 2/metabolism MH - Cognition/*drug effects/physiology MH - *Dietary Supplements MH - Docosahexaenoic Acids/*administration & dosage MH - Maze Learning/drug effects MH - Models, Biological MH - Neuronal Plasticity/*drug effects MH - Oxidative Stress/drug effects MH - *Physical Conditioning, Animal MH - Proto-Oncogene Proteins c-akt/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reaction Time/drug effects MH - Time Factors PMC - PMC3208643 MID - NIHMS68592 EDAT- 2008/07/16 09:00 MHDA- 2008/12/19 09:00 PMCR- 2011/11/04 CRDT- 2008/07/16 09:00 PHST- 2008/04/11 00:00 [received] PHST- 2008/05/20 00:00 [revised] PHST- 2008/05/20 00:00 [accepted] PHST- 2008/07/16 09:00 [pubmed] PHST- 2008/12/19 09:00 [medline] PHST- 2008/07/16 09:00 [entrez] PHST- 2011/11/04 00:00 [pmc-release] AID - S0306-4522(08)00780-X [pii] AID - 10.1016/j.neuroscience.2008.05.061 [doi] PST - ppublish SO - Neuroscience. 2008 Aug 26;155(3):751-9. doi: 10.1016/j.neuroscience.2008.05.061. Epub 2008 Jun 17.