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  • Title: Time course of dolichol and dolichyl phosphate during chemical carcinogenesis in rat liver.
    Author: Yamada K, Tsukidate K, Taki T, Katayama K, Sato T.
    Journal: Biochim Biophys Acta; 1987 Oct 17; 921(3):567-74. PubMed ID: 3663696.
    Abstract:
    Hyperplastic liver nodules were induced in rats by administration of an initiator (diethylnitrosamine or 3'-methyl-4-dimethylaminoazobenzene) and/or a promoter (phenobarbital) by the method reported by Tatematsu et al. (1983, Carcinogenesis 4, 381-386). The dolichol content in the liver and liver microsomes of the rats treated with the initiator were approx. 1.5-times higher than that of the control and rats treated with only the promoter. However, the composition of dolichols was not changed. The time course of the dolichyl phosphate concentration in the rat liver treated with both initiator and promoter showed a pattern different from that in the control liver, the initiator-treated liver or the promoter-treated liver. The main component of dolichyl phosphate in liver treated with both the initiator and promoter changed from that with 18 isoprene units to that with 19. It is suggested that the changes in liver dolichols and dolichyl phosphates may be related to the formation of hyperplastic liver nodules.
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