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- W1973245046 abstract "In SH-SY5Y, a human neuroblastoma cell line, Aroclor 1254 (A1254), induced a dose-dependent (10-50 microg/ml) intracellular calcium concentration ([Ca2+]i) increase. Two rather specific sodium-calcium (Na+-Ca2+) exchanger (NCX) inhibitors, bepridil (10 microM) and KB-R7943 [2-[2-[4-(4-nitrobenzyloxy) phenyl]ethyl]isothiourea methanesulfonate] (10 microM), reduced A1254-induced [Ca2+]i increase. A 24-h exposure to 30 microg/ml A1254 caused remarkable SH-SY5Y neuroblastoma cell damage. It is noteworthy that both bepridil and KB-R7943 counteracted A1254-induced neuronal injury. These results indicate that NCX contributes to [Ca2+]i increase and neuronal injury induced by A1254. RT-PCR experiments revealed in SH-SY5Y neuroblastoma cells the expression of NCX1 and NCX3 isoforms. To investigate which isoform was involved in [Ca2+]i increase and neuronal damage induced by A1254, we used specific antisense oligodeoxynucleotides (ODNs) to reduce NCX1 or NCX3 protein expression. The results showed that only NCX1 ODN reduced [Ca2+]i increase and neuronal injury induced by A1254. In conclusion, these results indicate that NCX1 may participate to [Ca2+]i increase and neurotoxicity evoked by A1254 in SH-SY5Y neuroblastoma cells." @default.
- W1973245046 created "2016-06-24" @default.
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- W1973245046 date "2005-07-11" @default.
- W1973245046 modified "2023-09-23" @default.
- W1973245046 title "Involvement of Na<sup>+</sup>-Ca<sup>2+</sup>Exchanger in Intracellular Ca<sup>2+</sup>Increase and Neuronal Injury Induced by Polychlorinated Biphenyls in Human Neuroblastoma SH-SY5Y Cells" @default.
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- W1973245046 doi "https://doi.org/10.1124/jpet.105.088948" @default.
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