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  • Title: Early effects of retinol and retinoic acid on protein synthesis in retinol deficient rat testes.
    Author: ul Haq R, Chytil F.
    Journal: Biochem Biophys Res Commun; 1988 Feb 29; 151(1):53-60. PubMed ID: 3348794.
    Abstract:
    When an [35S] labeled mixture of methionine and cysteine was injected intratesticularly into retinol-deficient rats, two hours later more than 980 cytosolic proteins were detected by computer aided two dimensional gel electrophoresis. Furthermore, two hours after oral refeeding retinyl acetate as the source of retinol to retinol deficient rats, synthesis of 286 proteins was inhibited and that of 101 proteins was activated. Refeeding with retinoic acid leads in two hours to even higher inhibition of protein synthesis and the labeling patterns of proteins are not identical when compared to retinol refed rats. The results indicate that retinol or retinoic acid quickly influence expression of many proteins and suggest that retinol action in the testes is not identical to that of retinoic acid.
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