Phospholipid and phospholipid fatty acid composition of mixed murine spinal cord neuronal cultures.
The phospholipid and phospholipid fatty acid compositions of mixed murine spinal cord neuronal cultures are reported. The phospholipid composition was primarily comprised of ethanolamine glycerophospholipids (44.8%) and choline glycerophospholipids (43.5%). Plasmalogens made up 29.1% of the ethanolamine glycerophospholipids (13.0% of the total phospholipids) and 4.5% of the choline glycerophospholipids (1.9% of the total phospholipids). Other phospholipids ranged from 2.9% for sphingomyelin to 1.0% for phosphatidylinositol 4-phosphate. The fatty acid compositions of the ethanolamine glycerophospholipids, choline glycerophospholipids, phosphatidylserine, and phosphatidylinositol were also determined. The choline glycerophospholipids were the most saturated and contained the smallest amount of polyunsaturated fatty acids. The ethanolamine glycerophospholipids were the most unsaturated and contained the highest amount of polyunsaturated fatty acids. The phospholipids contained minimal amounts of 20:3 n-9 (Mead acid) and are not considered polyunsaturated fatty acid deficient. Thus, for the mixed neuronal spinal cord cultures, the phospholipid fatty acid compositions were not polyunsaturated fatty acid deficient and contained a large amount of polyenoic fatty acids of both the n-3 and n-6 series.
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