期刊
BMB REPORTS
卷 41, 期 8, 页码 560-567出版社
KOREAN SOCIETY BIOCHEMISTRY & MOLECULAR BIOLOGY
DOI: 10.5483/BMBRep.2008.41.8.560
关键词
arachidonic acid; CNS pathologies; neurodegenerative disorders; oxidative stress; phosphatidylcholine; 4-hydroxynonenal
资金
- NIH/NINDS [NS42008]
- American Heart Association Greater Midwest [0655757Z]
- UW/-School of Medicine and Public Health Research Committee [161-PRJ13MX]
- UW-School of Medicine and Public Health
- UW-Graduate school
- UW-Neurological Surgery Department and laboratory resources
The importance of lipids in cell signaling and tissue physiology is demonstrated by the many CNS pathologies involving deregulated lipid metabolism. One such critical metabolic event is the activation of phospholipase A(2) (PLA(2)), which results in the hydrolysis of membrane phospholipids and the release of free fatty acids, including arachidonic acid, a precursor for essential cell-signaling eicosanoids. Reactive oxygen species (ROS, a product of arachidonic acid metabolism) react with cellular lipids to generate lipid peroxides, which are degraded to reactive aldehydes (oxidized phospholipid, 4-hydroxynonenal, and acrolein) that bind covalently to proteins, thereby altering their function and inducing cellular damage. Dissecting the contribution of PLA2 to lipid peroxidation in CNS injury and disorders is a challenging proposition due to the multiple forms of PLA2, the diverse sources of ROS, and the lack of specific PLA2 inhibitors. In this review, we summarize the role of PLA(2) in CNS pathologies, including stroke, spinal cord injury, Alzheimer's, Parkinson's, Multiple sclerosis-Experimental autoimmune encephalomyelitis and Wallerian degeneration.
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