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    題名: [6]-Gingerol Induces Ca2+ Mobilization in Madin-Darby Canine Kidney Cells.
    作者: Chen, Chung-Yi;Ching-Hsein Chen;Chiu-Hu Kung;Shih-Hsing Kuo;Soong-Yu Kuo
    貢獻者: 輔英科技大學 醫學檢驗生物技術系
    日期: 2008-01-01
    上傳時間: 2010-11-10 14:24:17 (UTC+8)
    摘要: [6]-Gingerol, a major phenolic compound derived from ginger (Zingiber officinale), is a potential chemopreventive compound that can induce stress in cancer cells and cause apoptotic cell death. This study examines the early signaling effects of [6]-gingerol on renal cells. It was found that [6]-gingerol caused a slow and sustained rise of [Ca2+]i in a concentration-dependent manner. [6]-Gingerol also induced a [Ca2+]i rise when extracellular Ca2+ was removed, but the magnitude was reduced by 80%. Depletion of intracellular Ca2+ stores with CCCP, a mitochondrial uncoupler, did not affect the action of [6]-gingerol. In a Ca2+-free medium, the [6]-gingerol-induced [Ca2+]i rise was partially abolished by depleting stored Ca2+ with thapsigargin (an endoplasmic reticulum Ca2+ pump inhibitor). The elevation of [6]-Gingerol-caused [Ca2+]i in a Ca2+-containing medium was not affected by modulation of protein kinase C activity. The [6]-gingerol-induced Ca2+ influx was blocked by nicardipine. U73122, an inhibitor of phospholipase C, abolished ATP (but not [6]-gingerol)-induced [Ca2+]i rise. These findings suggest that [6]-gingerol induces a significant rise in [Ca2+]i in MDCK renal tubular cells by stimulating both extracellular Ca2+ influx and thapsigargin-sensitive intracellular Ca2+ release via as yet unidentified mechanisms.
    關聯: J. Nat. Prod. 71(1),137-140
    顯示於類別:[醫學檢驗生物技術系] 期刊論文


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