Linked Life Data

16916957

Source:http://linkedlifedata.com/resource/pubmed/id/16916957

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pubmed-article:16916957pubmed:dateCreated2006-10-17lld:pubmed
pubmed-article:16916957pubmed:abstractTextAlthough the antiviral effect of interferon (IFN) varies depending on 24-h oscillation in the expression of its specific receptor, the mechanism of oscillation remains to be clarified. Here we report that oscillation in the expression of the IFN receptor gene (IFN-alpha/beta R1) in mouse liver is caused by the endogenous rhythm of glucocorticoid secretion. Brief exposure of mouse hepatic cells (Hepa 1-6) to corticosterone (CORT) resulted in a significant decrease in mRNA levels of IFN-alpha/beta R1. The CORT-induced decrease in IFN-alpha/beta R1 mRNA levels was reversed by pretreating the cells with RU486, a glucocorticoid receptor antagonist. The mRNA levels of IFN-alpha/beta R1 gene in the liver of adrenalectomized mice were consistently increased throughout the day. However, a single administration of CORT to adrenalectomized mice significantly decreased the mRNA levels of IFN-alpha/beta R1 in the liver. Furthermore, the rhythmic phase of IFN-alpha/beta R1 expression was modulated after the alteration of rhythmicity in glucocorticoid secretion, which was induced by restricted daily feeding. As a consequence, under manipulation of the feeding schedule, 2'-5' oligoadenylate synthase activities, as an index of antiviral effect, in plasma and liver at 24 h after IFN-alpha injection also varied depending on the alteration of glucocorticoid secretion rhythm. These results suggest that the endogenous rhythm of glucocorticoid secretion is involved in the circadian regulation of IFN-alpha/beta R1 expression in mouse liver. Our findings also support the notion that monitoring the 24-h variation in IFN receptor function is useful for selecting the most appropriate time of day to administer IFN.lld:pubmed
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pubmed-article:16916957pubmed:monthNovlld:pubmed
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pubmed-article:16916957pubmed:authorpubmed-author:OhdoShigehiro...lld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:HiguchiShunSlld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:SoedaShinjiSlld:pubmed
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pubmed-article:16916957pubmed:authorpubmed-author:ShimenoHirosh...lld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:TakaneHiroshi...lld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:KuramotoYukak...lld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:SuyamaHinakoHlld:pubmed
pubmed-article:16916957pubmed:authorpubmed-author:MatsunagaNoay...lld:pubmed
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pubmed-article:16916957pubmed:volume147lld:pubmed
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pubmed-article:16916957pubmed:pagination5034-40lld:pubmed
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pubmed-article:16916957pubmed:year2006lld:pubmed
pubmed-article:16916957pubmed:articleTitleGlucocorticoid regulation of 24-hour oscillation in interferon receptor gene expression in mouse liver.lld:pubmed
pubmed-article:16916957pubmed:affiliationPharmaceutics, Department of Medico-Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan.lld:pubmed
pubmed-article:16916957pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:16916957pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed