Effects of Cheonghyul-San on the Generation of Redox Status and on the Expression of NF-${\kappa}$B Dependent Proteins

청혈산(淸血散)이 Redox Status 및 NF-${\kappa}$B 의존성 단백질에 미치는 영향

  • Oh, Jeong-Pyo (Department of Internal Medicine, College of Korean Medicine, Dongguk University) ;
  • Jeong, Ji-Cheon (Department of Internal Medicine, College of Korean Medicine, Dongguk University)
  • 오정표 (동국대학교 한의과대학 내과학교실) ;
  • 정지천 (동국대학교 한의과대학 내과학교실)
  • Published : 2009.04.25

Abstract

The aim of this study was to investigate the effects of Cheonghyul-san on the generation of peroxynitrite ($ONOO^-$), nitric oxide (NO) and superoxide anion radical ( ${\cdot}\;O_2^-$), and on the expression of NF-${\kappa}$B-dependent proinflammatory proteins in ob/ob mice. Mice were grouped and treated for 5 weeks as follows. Both the normal lean (C57BL/6J black mice) and control obese (ob/ob mice) groups have received the standard chow. The experimental groups were fed with a diet of chow supplemented with 7.5, 15 and 30 mg Cheonghyul-san per 1 kg of body weight for 14 days. For this study, the fluorescent probes, namely 2',7'-dichlorodihydrofluorescein diacetate (DCFDA), 4,5-diaminofluorescein-2 (DAF-2) and dihydrorhodamine 123 (DHR 123) were used. Western blot was performed using anti-IKK-${\alpha}$, anti-phospho I${\kappa}$B-${\alpha}$, anti-NF-${\kappa}$B (p50, p65), anti-COX-2, anti-iNOS, anti-VCAM-1 antibodies, respectively. Cheonghyul-san prevented $H_2O_2$-induced cell death. Cheonghyul-san inhibited the generation of $ONOO^-$, NO and ${\cdot}\;O_2^-$ in the $H_2O_2$-treated LLC-$PK_1$ cells. The generation of $ONOO^-$, NO and ${\cdot}\;O_2^-$ were inhibited in the Cheonghyul-san-administered ob/ob mice groups. The GSH/GSSG ratio was decreased in the ob/ob mice, whereas the ratio was improved in the Cheonghyul-san-administered groups. Cheonghyul-san inhibited the protein expression levels of phospho-I${\kappa}$B-${\alpha}$, IKK-${\alpha}$, NF-${\kappa}$B (p50, p65), COX-2, iNOS and VCAM-1 genes. These results suggest that Cheonghyul-san is an effective scavenger of $ONOO^-$, ${\cdot}\;O_2^-$ and NO, and has an inhibitory effect on the expression of NF-${\kappa}$B-dependent inflammatory genes in ob/ob mice. Therefore, Cheonghyul-san might be used as a potential therapeutic drug against the diabetes- and obesity-related proinflammatory diseases.

Keywords

References

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