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The lipid composition of ovine placental tissue homogenate and its subcellular fractions



The lipid composition of ovine placental tissue homogenate and its subcellular fractions



Comparative Biochemistry & Physiology B 79(2): 291-296



Homogenates of the placental tissue of near term sheep were separated by differential centrifugation into mitochondrial, microsomal and cytosolic fractions. The relative proportions of the major neutral lipids and phospholipids, together with their fatty acid compositions, were determined in the homogenates and in each subcellular fraction. The cystolic fraction contained the highest proportion of cholesteryl esters (CE) and these possessed a fatty acid composition markedly different from the total CE extracted from the homogenate. Both the mitochondrial and microsomal fractions contained significant proportions of solvent front phospholipid (SFP); the mitochondrial SFP displayed the relatively unsaturated fatty acid composition characteristic of diphosphatidylglycerol (cardiolipin), the fatty acids of the microsomal SFP were distinctly more saturated. These results are compared with those obtained from other mammalian tissues, both ruminant and non-ruminant, and discussed in terms of the function of the components of the subcellular fractions.

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Accession: 001489096

Download citation: RISBibTeXText

PMID: 6509920

DOI: 10.1016/0305-0491(84)90028-2


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