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首页> 外文期刊>International journal of PIXE >HEAVY METALS TOXICITY AFTER ACUTE EXPOSURE OF CULTURED RENAL CELLS: INTRACELLULAR ACCUMULATION AND REPARTITION
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HEAVY METALS TOXICITY AFTER ACUTE EXPOSURE OF CULTURED RENAL CELLS: INTRACELLULAR ACCUMULATION AND REPARTITION

机译:急性暴露于培养的肾细胞后的重金属毒性:细胞内积累和再生

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摘要

Lead (Pb), cadmium (Cd) and uranium (U) present no known biological function but are toxic in various concentration ranges. Pb and Cd lead generally to nephrotoxicity consisting in proximal renal tubular dysfunction and accumulation while U has been reported to induce chemical kidney toxicity, functional and histological damages being as well mainly observed in proximal tubule cells. This work address the question of Cd, Pb, and U cytotoxicity, intracellular accumulation and repartition after acute intoxication of renal proximal tubule epithelial cells. After cells exposure to different concentrations of metals for various times, morphological changes were observed and intracellular concentrations and distributions of toxic metals were specified by PIXE coupled to RBS. Cell viability, measured by biochemical tests, was used as toxicity indicator. A direct correlation between cytotoxicity and intracellular accumulation in renal epithelial cells have been established. Finally, intracellular Pb and U localizations were detected while Cd was found to be uniformly distributed in renal cells.
机译:铅(Pb),镉(Cd)和铀(U)没有已知的生物学功能,但在各种浓度范围内均具有毒性。 Pb和Cd通常会导致肾毒性,包括近端肾小管功能障碍和积聚,而据报道U会引起化学性肾毒性,主要在近端小管细胞中也观察到功能和组织学损害。这项工作解决了急性中毒肾近端小管上皮细胞后Cd,Pb和U的细胞毒性,细胞内积累和重新分配的问题。细胞暴露于不同浓度的金属不同时间后,观察到形态学变化,并通过与RBS偶联的PIXE确定了细胞内浓度和有毒金属的分布。通过生化测试测量的细胞生存力用作毒性指标。已经建立了肾上皮细胞的细胞毒性和细胞内积累之间的直接关系。最后,检测到细胞内Pb和U定位,而发现Cd均匀分布在肾细胞中。

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