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        The Effects of Allitridin on the Expression of Transcription Factors T-bet and GATA-3 in Mice Infected by Murine Cytomegalovirus

        Xu Yi,Fang Feng,Zhidan Xiang,Li Ge 한국식품영양과학회 2005 Journal of medicinal food Vol.8 No.3

        This study was designed to investigate the effects of allitridin on the expression of transcription factors T-betand GATA-3 in mice infected by murine cytomegalovirus (MCMV). A BALB/c mouse model system of MCMV infectionwas established. Twenty mice were allocated randomly into an allitridin-treated group (n . 10) and a placebo control group(n . 10). The same dose (25 mg/kg/day) and regimen of allitridin were used in the treated group in the 24 hours after virusinfection; the same volume of saline solution was injected in placebo control mice. In an additional blank control group (n .10), the same volume of saline solution was injected. The expression levels of the transcription factors T-bet and GATA-3were measured by reverse transcriptionpolymerase chain reaction. The expression levels of the T helper (Th) 1 cytokine in-terferon-. (IFN-.) and the Th2 cytokine interleukin (IL)-10 in supernatant of spleen cell culture were measured by enzyme-linked immunosorbent assay. MCMV infection markedly down-modulated the expression of IFN-. and T-bet and significantlyup-modulated the expression of IL-10 and GATA-3. Allitridin induced significantly (P. .01) increased expression of thetranscription factor T-bet and the Th1 cytokine IFN-. and markedly (P. .01) decreased expression of the transcription fac-tor GATA-3 and the Th2 cytokine IL-10. Thus MCMV infection could lead to disequilibrium of Th1/Th2 cytokine expres-sion: The level of the Th1 cytokine IFN- was decreased significantly, and Th2 cytokine IL-10 was overexpressed markedly.Allitridin could up-regulate the expression of T-bet and IFN-. and inhibit the expression of GATA-3 and IL-10 in MCMV-infected mice, indicating a Th1 dominant state, which should enhance the specific cellular immune reactions against cy-tomegalovirus (CMV) and be helpful for clearance of CMV from the host.

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