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논문 기본 정보

자료유형
학술저널
저자정보
Chung, Shin-kyo (Department of Food Technology, Kyungpook National University) Nam, Ji-Ae (Division of Applied Biology and Chemistry, College of Agriculture and Life Sciences, Kyungpook National University) Jeon, So-Young (Division of Applied Biology and Chemistry, College of Agriculture and Life Sciences, Kyungpook National University) Kim, Sang-ln (Division of Applied Biology and Chemistry, College of Agriculture and Life Sciences, Kyungpook National University) Lee, Hee-Ju (Division of Applied Biology and Chemistry, College of Agriculture and Life Sciences, Kyungpook National University) Chung, Tai-Ho (School of Medicine, Kyungpook National University) Song, Kyung-Sik (Division of Applied Biology and Chemistry)
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 제26권 제12호
발행연도
2003.1
수록면
1,024 - 1,028 (5page)

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A prolyl endopeptidase inhibitor was isolated from the ethyl acetate soluble fraction of Phyllanthus ussurensis. The active compound was identified as an ellagitannin, corilagin. It was shown to non-competitively inhibit prolyl endopeptidase (PEP) with the $IC_{50}$ value of $1.17 \times $10^{-6}\mu$M. The Ki value was $6.70 \times 10^{-7}$ M. Corilagin was less inhibitory to other serine proteases such as chymotrypsin, trypsin, and elastase, indicating that it was relatively a specific inhibitor of PEP. Corilagin also effectively inhibited reactive oxygen species such as hydroxide and superoxide anion radical, hydrogen peroxide, and DPPH. Especially, corilagin showed potent scavel1ging activity on the superoxide anion radical in the ESR method ($IC_{50} =3.79 \times 10^{-6}$M) as well as xanthine oxidase system.

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