Jan 1, 1976

Cholesterol and fatty acid synthesis in swine

W Y Huang, F A Kummerow


In incubation studies with swine tissue slices, acetate-1-14C or glucose-U-14C as substrates were incorporated more readily into fatty acids and cholesterol in adipose tissue than other tissues tested. Cholesterol and fatty acid synthesizing acitivity was substantial in the small intestine. When acetate was available, liver, small intestine, and adipose tissue were important sites for cholesterol synthesis. Heart and aortic tissue had marginal levels of cholesterol synthesizing ability. Lipogenesis in adult swine liver, heart, and aortic tissue was extremely low. As in tissue slices, incorporation of acetyl-1-14C CoA into fatty acids by adipose homogenates indicated high lipogenic activity. Subcellular fractionations of heart and aortic tissue indicated that the heart microsomal fraction had the highest lipogenic activity as measured by the incroporation of acetyl-4-14C CoA into fatty acids. In adult swine adipose tissue, the incorporation of glucose-U-14C into fatty acid was higher than its incorporation into glyceride-glycerol. The synthesis of glyceride-glycerol from glucose-U-14C or acetate-1-14C in liver was higher than for fatty acid synthesis. The acitivity of acetyl CoA carboxylase, fatty acid synthetase, citrate cleava...Continue Reading

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Mentioned in this Paper

Fat Pad
Cholesterol Biosynthetic Process
Malate Dehydrogenase
Small Intestinal Wall Tissue
Tissue Specificity
Glycerol-3-Phosphate Dehydrogenase

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