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Dehydroepiandrosterone Sulfate Inhibited Immune Dysfunction Induced by LP-BM5 Leukemia Retrovirus Infection through Regulating Th1/Th2 Type Cytokine mRNA Expression and Oxidative Stress in Murine AIDS Model

LP-BM5 Leukemia Retrovirus 감염으로 유발된 Murine AIDS에서 Dehydroepiandrosterone Sulfate의 Th1/Th2 Cytokines의 발현 조절 및 산화적 스트레스 억제 효과 연구

  • 이정민 (남부대학교 식품영양학과)
  • Published : 2006.12.29

Abstract

LP-BM5 murine leukemia retrovirus induces the excessive oxidative stress and immune dysfunction leading to B cell leukemia and murine AIDS with cytokine dysfunction. In the present study, the immune restoratory effect of antioxidant hormone dedydroepiandrosterone sulfate (DHEAS) was investigated in the primary splenocytes from LP-BM5 retrovirus-infected C57BL/6 mice. DHEAS significantly increased T and B cell response to mitogen and normalized the unbalanced production of Th1/Th2 type cytokines. In particular, both protein and mRNA expression of IL-4, IL-6, and $TNF-\alpha$ were down-regulated by DHEAS treatment whereas IL-2 and $IFN-\gamma$ level were increased. This result suggests that DHEAS directly or indirectly regulates the gene expression of Th1/Th2 type cytokines in transcription level. In addition, DHEAS treatment decreased the hepatic lipid peroxidation and preserved vitamin E level in liver cells. These results suggested that DHEAS could effectively prevent immune dysfunction by regulating cytokine secretion and preventing the oxidative stress in murine AIDS.

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