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자료유형
학술저널
저자정보
Oh, Chang-Joo (School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University) Yang, Eun-Sun (School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University) Shin, Seoung-Woo (School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University) Choi, Seong-Hun (Daegu Haany University) Park, Chan-Ik (Daegu Haany University) Yang, Chae-Ha (Daegu Haany University) park, Jeen-Woo (School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook 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 제31권 제1호
발행연도
2008.1
수록면
34 - 40 (7page)

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A high concentration of glucose has been implicated as a causal factor in initiation and progression of diabetic complications, and there is evidence to suggest that hyperglycemia increases the production of free radicals and oxidative stress. Therefore, compounds that scavenge reactive oxygen species may confer regulatory effects on high glucose-induced apoptosis. Epigallocatechin gallate (EGCG), the major polyphenolic of green tea, is reported to have an antioxidant activity. We investigated the effect of EGCG on high glucose-induced apoptosis in U937 cells. Upon exposure to 35 mM glucose for 2 days, there was a distinct difference between untreated cells and cells pre-treated with 1 ${\mu}M$ EGCG for 2 h in regard to cellular redox status and oxidative DNA damage to cells. EGCG pre-treated cells showed significant suppression of apoptotic features such as DNA fragmentation, damage to mitochondrial function, and modulation of apoptotic marker proteins upon exposure to high glucose. This study indicates that EGCG may play an important role in regulating the apoptosis induced by high glucose presumably through scavenging of reactive oxygen species.

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