Abstract
Myelin phospholipids have been examined by a separation-reaction-separation procedure for two-dimensional thin-layer chromatography on silica gel. After separation in one dimension, alk-1-enyl groups are cleaved by exposure of the plates to HCl fumes. Development in the second dimension quantitatively separates acid-labile and acid-stable phosphoglycerides as well as the aldehydes released from the acid-labile phosphoglycerides. Myelin phospholipids from the central nervous systems of the rhesus monkey, squirrel monkey, ox, and mouse contain 32-36% acid-labile ethanolamine phosphoglycerides (ethanolamine plasmalogens) and 8-14% acid-stable ethanolamine phosphoglycerides. Acid-labile choline and serine phosphoglycerides account for less than 1% of the myelin phospholipids.
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