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The Pharmaceutical Society of Korea (대한약학회)
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Effects of Tributyltin Chloride on L-DOPA-Induced Cytotoxicity in PC12 Cells

  • Lee, Jae-Joon (College of Pharmacy, and Research Center for Bioresource and Health, Chungbuk National University) ;
  • Kim, Yu-Mi (College of Pharmacy, and Research Center for Bioresource and Health, Chungbuk National University) ;
  • Park, Seung-Kook (College of Pharmacy, and Research Center for Bioresource and Health, Chungbuk National University) ;
  • Lee, Myung-Koo (College of Pharmacy, and Research Center for Bioresource and Health, Chungbuk National University)
  • Published : 2006.08.01
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Abstract

Tributyltin chloride (TBTC) at concentrations of $0.5-1.0\;{\mu}M$ inhibits dopamine biosynthesis in PC12 cells. In this study, the effects of TBTC on L-3,4-dihydroxyphenylalanine (L-DOPA)-induced cytotoxicity in PC12 cells were investigated. TBTC at concentrations up to $1.0\;{\mu}M$ neither affected cell viability, nor induced apoptosis after 24 or 48 h in PC12 cells. However, TBTC at concentrations higher than $2.0\;{\mu}M$ caused cytotoxicity through an apoptotic process. In addition, exposure of PC12 cells to non-cytotoxic (0.5 and $1.0\;{\mu}M$) or cytotoxic $(2.0\;{\mu}M)$ concentrations of TBTC in combination with L-DOPA (20, 50 and $100\;{\mu}M$) resulted in a significant increase in cell loss and the percentage of apoptotic cells after 24 or 48 h compared with TBTC or L-DOPA alone. The enhancing effects of TBTC on L-DOPA-induced cytotoxicity were concentration- and treatment time-dependent. These data demonstrate that TBTC enhances L-DOPA-induced cytotoxicity in PC 12 cells.

Keywords

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