Abstract
Effect of daily oral feeding of 33 mg retinol for nine days on the liver phospholipids of rats has been studied. As early as two days after feeding retinol an increase in the amounts of liver triglycerides, proteins, phospholipids, and cholesterol was noted which kept increasing and reached the peak concentration 6 days after daily retinol feeding and thereafter a decrease in their amounts was noted. Hepatic phospholipid fractions viz. phosphatidyl choline, phosphatidyl ethanolamine, phosphatidic acid and polyglycerol phosphatide, phosphatidyl inositol, phosphatidyl serine, sphingomyelin, lysophosphatidyl ethanolamine and lysophos- phatidyl choline showed the same pattern. Labelling of these phospholipids with NaH232PO4 in rats fed daily 33 mg of retinol for a period of two days also exhibited the pattern which was observed in their amounts two days after daily feeding of retinol. The results suggest a close relationship between the metabolism of hepatic triglycerides and phospholipids of rats fed excessi...
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