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  • Title: Synthesis and metabolism of all-trans-[11-3H]retinyl beta-glucuronide in rats in vivo.
    Author: Barua AB, Batres RO, Olson JA.
    Journal: Biochem J; 1988 Jun 01; 252(2):415-20. PubMed ID: 3415665.
    Abstract:
    All-trans-[11-3H]retinyl beta-glucuronide (all-trans-[11-3H]ROG) was synthesized from [3H]retinol by an improved synthetic procedure. After its intraperitoneal injection into rats, ROG is initially found as the predominant labelled component in the serum, but then is distributed to the liver, intestine, kidney and other organs of the body. Esters of vitamin A, which constituted the major metabolite of ROG, were detected in the liver as well as in other tissues. Of the labelled vitamin A esters derived from tritiated ROG in the liver and intestine, about 50% contained 5,6-epoxyretinol, which was characterized by its chromatographic behaviour, formation of an acetyl ester and lack of reactivity with diazomethane. Thus ROG, although converted to retinol in vivo, might also act physiologically in an intact form.
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