[Plasmalogen forms of phospholipids in the subcellular fractions of the rabbit brain].

Data are presented on plasmalogen and diacylic forms of phospholipids-phosphatidylethanolamine and phosphatidylcholine-in different parts of the brain, as well as in different subcellular fractions from the brain of rabbits. Studies were made on 4 brain structures (forebrain, midbrain, cerebellum, medulla oblongata) and 5 subcellular fractions (myelin, nuclei, microsomes, mitochondria, synaptosomes). It was shown that among brain structures, the medulla oblongata has the highest plasmalogen content. The latter being also the highest in myelin fraction. Fatty aldehydes and fatty acids of myelinic plasmalogens are most unsaturated. Nuclear fraction is more similar to myelin than other ones. With respect to relative content and plasmalogen composition, microsomal, mitochondrial and synaptosomal fractions differ from myelin and nuclear fractions.