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논문 기본 정보

자료유형
학술저널
저자정보
Oh Seung-Min (College of Pharmacy, Sungkyunkwan University) Kim Yeon-Pan (Meditech Korea Pharm) Chung Kyu-Hyuck (College of Pharmacy, Sungkyunkwan 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 제29권 제5호
발행연도
2006.1
수록면
354 - 362 (9page)

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Dietary flavonoids have attracted a great deal of attention as agents for preventing estrogen-related diseases, such as postmenopausal symptoms, and for reducing the risk of estrogen-dependent cancer. Kaempferol is one of the most commonly found dietary phytoestrogen. The aim of this study was to investigate the estrogenic and/or antiestrogenic effect of kaempferol, which can confirm its potency as a preventive agent against estrogen-related diseases. Kaempferol has both estrogenic and antiestrogenic activity, which are biphasic response on estrogen receptor. The estrogenic activity of kaempferol induced via ER-mediated pathway depending on $E_2$ concentration $(\leq\;10^{-12}M)$. Kaempferol $(10^{-5}\;M)$ also caused antiproliferative effect on MCF-7 cell in the presence of $E_2\;(10^{-11}\;M)$ and restored to the addition of excess $E_2\;(10^{-7}\;M)$, which confirms that antiproliferation of kaempferol was induced via ER-dependent pathway. However, at $10^{-4}\;M$, concentration higher than the concentrations at which the estrogenic effects of kaempferol are detected $(10^{-5}\;M)$, kaempferol induced strong antiproliferative effect, but were unaffected by the addition of excess $E_2\;(10^{-7}\;M)$ indicating that kaempferol exerts antiproliferation via ER-independent pathway. In particular, kaempferol blocked the focus formation induced by $E_2$, which confirms that kaempferol might inhibit the malignant transformation caused by estrogens. Therefore, we suggested that kaempferol might regulate a suitable level of estrogenic activity in the body and is expected to have potential beneficial effects in preventing estrogen imbalance diseases (breast cancer, osteoporosis, cardiovascular disease and etc.).

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