title: Phosphatidylserine-dependent neuroprotective signaling promoted by docosahexaenoic acid.
abstract: Enrichment of polyunsaturated fatty acids, particularly docosahexaenoic acid (DHA, 22:6n-3), in the brain is known to be critical for optimal brain development and function. Mechanisms for DHA's beneficial effects in the nervous system are not clearly understood at present. DHA is incorporated into the phospholipids in neuronal membranes, which in turn can influence not only the membrane chemical and physical properties but also the cell signaling involved in neuronal survival, proliferation and differentiation. Our studies have indicated that DHA supplementation promotes phosphatidylserine (PS) accumulation and inhibits neuronal cell death under challenged conditions, supporting a notion that DHA is an important neuroprotective agent. This article summarizes our findings on the DHA-mediated membrane-related signaling mechanisms that might explain some of the beneficial effects of DHA, particularly on neuronal survival.
authors.affiliation: Laboratory of Molecular Signaling, NIAAA, NIH, Bethesda, MD 20892-9410, USA. hykim@nih.gov
authors.forename: Hee-Yong
authors.initials: HY
authors.lastname: Kim
authors.forename: Mohammed
authors.initials: M
authors.lastname: Akbar
authors.forename: Yang-Suk
authors.initials: YS
authors.lastname: Kim
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D004281:Docosahexaenoic Acids / Q000378:metabolism / Q000494:pharmacology*; D006801:Humans; D008954:Models, Biological; D009474:Neurons / Q000187:drug effects* / Q000378:metabolism; D018696:Neuroprotective Agents / Q000378:metabolism / Q000494:pharmacology; D010718:Phosphatidylserines / Q000378:metabolism*; D010766:Phosphorylation / Q000187:drug effects; D011494:Protein Kinases / Q000378:metabolism; D015398:Signal Transduction / Q000187:drug effects*
chemical_list: D018696:Neuroprotective Agents; D010718:Phosphatidylserines; D004281:Docosahexaenoic Acids; D011494:Protein Kinases