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Chlorophenols and chlorocatechols induce apoptosis in human lymphocytes (in vitro)

机译:氯酚和氯丁金诱导人淋巴细胞(体外)诱导细胞凋亡

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摘要

In this work the effect of 2,4,5-trichlorophenol (2,4,5-TCP), pentachlorophenol (PCP), 4,6-dichloroguaiacol (4,6-DCG), tetrachloroguaiacol (TeCG), 4,5-dichlorocatechol (4,5-DCC) and tetrachlorocatechol (TeCC) on the induction of apoptosis in human peripheral blood lymphocytes was examined. The analysis of the changes in mitochondrial transmembrane potential was performed using JC-9 fluorescent probe. It was noted that all the compounds studied (excluding 4,6-DCG) in a dose-dependent manner (0.2-25 ppm) increased the number of cells, which were characterized by the reduction, with the strongest effect observed for TeCG and TeCC. Moreover, fluorimetric assay of the caspase-3 activity revealed that 2,4,5-TCP, chlorocatechols and TeCG in the range of the concentrations of 1-50 ppm increased the caspase-3 expression, whereas PCP in its highest concentration of 50 ppm decreased the activity of this enzyme. It was also noted that the caspase-3 activity was the most strongly induced by tetrachlorocatechols, particularly by TeCC. The analysis of YO-PRO-1 iodide/propidum iodide staining revealed that TeCC, the most strongly increased the number of apoptotic cells at 5 and 25 ppm, whereas at a dose of 100 ppm the strongest effect on apoptosis induction was observed for 2,4,5-TCP.
机译:在这项工作中,2,4,5-三氯苯酚(2,4,5-TCP),五氯苯酚(PCP),4,6-二氯胍(4,6-DCG),四氯胍(TECG),4,5-研究了二氯替氯替金属(4,5-DCC)和四氯咖啡(TECC)对人外周血淋巴细胞诱导凋亡的诱导。使用JC-9荧光探针进行线粒体跨膜电位变化的分析。注意,研究(不包括4,6-DCG)以剂量依赖性方式(0.2-25ppm)的所有化合物增加了细胞的数量,其特征在于减少,具有TECG和TECC的最强效应。此外,Caspase-3活性的荧光测定表明,在浓度为1-50ppm的浓度范围内的2,4,5-TCP,氯丁金和TECG增加了Caspase-3表达,而PCP的最高浓度为50ppm降低了这种酶的活性。还有人注意到,Caspase-3活性是四氯脲,特别是TECC最强烈的诱导。 yo-pro-1碘化物/碘化物染色的分析显示,TECC,最强烈地增加了5和25ppm的凋亡细胞数,而在100ppm的剂量下观察到2, 4,5-TCP。

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