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자료유형
학술저널
저자정보
Babu, Dinesh (College of Pharmacy, Yeungnam University) Lee, Jong-Suk (College of Pharmacy, Yeungnam University) Park, Su-Young (College of Pharmacy, Yeungnam University) Thapa, Dinesh (College of Pharmacy, Yeungnam University) Choi, Mi-Kyoung (College of Pharmacy, Yeungnam University) Kim, Ah-Ra (College of Pharmacy, Yeungnam University) Park, Young-Joon (Research Center, Samil Pharmaceutical Co. Ltd.) Kim, Jung-Ae (College of Pharmacy, Yeungnam University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제31권 제6호
발행연도
2008.1
수록면
727 - 735 (9page)

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Oxidative stress and the activation of nuclear factor (NF)-${\kappa}B$ play crucial roles in the pathogenesis of inflammatory bowel disease (IBD). In the present study, we examined the effects of the ethanol extract of Platycarya strobilacea Sieb. stem (EPS) on TNF-$\alpha$-induced monocyte adhesion to HT29 human colon epithelial cells, an initial step of colon inflammation. EPS contained high amount of polyphenols ($0.241{\pm}0.017\;mg$ of catechin equivalent/g of extract) and showed substantial DPPH radical scavenging activity. In addition, EPS significantly suppressed TNF-$\alpha$-induced reactive oxygen species (ROS) increase. Moreover, TNF-$\alpha$-induced monocyte adhesion to HT29 colon epithelial cells was significantly suppressed by EPS in a concentrationdependent manner. The reduced adhesion by EPS was correlated with suppressed expression of MCP-1 and IL-8, the major chemokines in IBD. EPS also prevented the TNF-$\alpha$-induced nuclear translocation of NF-${\kappa}B$, one of the redox-sensitive transcription factors, in a concentration-dependent manner. Taken together, our results suggest that the anti-oxidant components of EPS prevent TNF-$\alpha$-induced NF-${\kappa}B$ activation, chemokine induction, and monocyte adhesion at the site of intestinal inflammation.

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