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Original Article

Liver Retinoids and Retinol Esterification in Fetal and Pregnant Rats at Term

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Pages 696-700 | Received 29 Mar 1985, Accepted 22 Apr 1985, Published online: 08 Jul 2009
 

Abstract

Retinol esterification in fetal rats and their mothers at term was studied in liver microsomes. The esterification rate was 0.28 ± 0.05 nmol ester formed per milligram protein per minute, a value somewhat lower than that found in their mothers (0.44 ± 0.11). The fetuses had significant amounts of liver retinoids. Analysis by high-performance liquid chromatography showed that the retinoid store consisted mainly of retinyl ester both in fetal and adult rat livers, but the fetal livers had higher percentages of free retinol and retinyl oleate than the adult livers. The presence of retinol esterification and a retinyl ester store in fetal rat liver at term is in accordance with the view that retinol brought to liver on retinol-binding protein can be taken up and retained there.

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