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- W2023118924 abstract "Effect of sertraline, an antidepressant, on cytosolic free Ca(2+) levels ([Ca(2+)](i)) in human cancer cells is unclear. This study examined if sertraline altered basal [Ca(2+)](i) levels in suspended OC2 human oral cancer by using fura-2 as a Ca(2+)-sensitive fluorescent probe. At concentrations of 10-100 μM, sertraline induced a [Ca(2+)](i) rise in a concentration-dependent fashion. The Ca(2+) signal was reduced partly by removing extracellular Ca(2+) indicating that Ca(2+) entry and release both contributed to the [Ca(2+)](i) rise. Sertraline induced Mn(2+) influx, leading to quench of fura-2 fluorescence suggesting Ca(2+) influx. This Ca(2+) influx was inhibited by suppression of phospholipase A2, inhibition of store-operated Ca(2+) channels or by modulation of protein kinase C activity. In Ca(2+)-free medium, pretreatment with the endoplasmic reticulum Ca(2+) pump inhibitor thapsigargin or 2,5-di-(t-butyl)-1,4-hydroquinone (BHQ) nearly abolished sertraline-induced Ca(2+) release. Conversely, pretreatment with sertraline greatly reduced the inhibitor-induced [Ca(2+)](i) rise, suggesting that sertraline released Ca(2+) from the endoplasmic reticulum. Inhibition of phospholipase C did not change sertraline-induced [Ca(2+)](i) rise. Together, in human oral cancer cells, sertraline induced [Ca(2+)](i) rises by causing phospholipase C-independent Ca(2+) release from the endoplasmic reticulum and Ca(2+) influx via store-operated Ca(2+) channels." @default.
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- W2023118924 date "2011-01-19" @default.
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- W2023118924 title "The mechanism of sertraline-induced [Ca<sup>2+</sup>]<sub>i</sub> rise in human OC2 oral cancer cells" @default.
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- W2023118924 doi "https://doi.org/10.1177/0960327110396523" @default.
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