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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Byung-Hak (College of Pharmacy & Research Center for Bioresource and Health, Chungbuk National University) Cho, Sung-Min (College of Pharmacy & Research Center for Bioresource and Health, Chungbuk National University) Chang, Yoon-Sook (College of Pharmacy & Research Center for Bioresource and Health, Chungbuk National University) Han, Sang-Bae (College of Pharmacy & Research Center for Bioresource and Health, Chungbuk National University) Kim, Young-Soo (College of Pharmacy & Research Center for Bioresource and Health, Chungbuk National 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 제30권 제6호
발행연도
2007.1
수록면
733 - 738 (6page)

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We previously isolated quercetin 3-O-${\beta }$-(2'-galloyl)-rhamnopyranoside (QGR), a quercitrin gallate, from aerial parts of Persicaria lapathifolia (Polygonaceae) to prevent superoxide production in monocytes from venous blood of healthy human donors. In this study, effects of QGR and its building moieties (quercitrin, quercetin and gallic acid) on the production or Peroxynitrite a coupling oxidant between superoxide and nitric oxide (NO) radicals, were investigated in zymosan A-stimulated macrophages RAW 264.7. The QGR, quercitrin and quercetin Inhibited peroxynitrite production in dose-dependent manners with IC$_{50}$ values of 2.1 ${\mu}$M, 24.5 ${\mu}$M and 5.1 ${\mu}$M, respectively, but gallic acid even at 100 ${\mu}$M was inactive. QGR also inhibited both zymosan A- and phorbol 12-myristate 13-acetate-induced superoxide productions with IC$_{50}$ values of 3.2 ${\mu}$M and 4.7 ${\mu}$M, respectively. However, QGR affected neither zymosan A-induced NO production nor inducible NO synthase synthesis. Taken together, QGR could inhibit peroxynitrite production by blocking superoxide production wityout affecting NO production Finally, this study could provide a pharmacological potential of QGR in the oxidative stress-implicated disorders.

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