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In vitro assessment of the combination of cylindrospermopsin and the organophosphate chlorpyrifos on the human neuroblastoma SH-SY5Y cell line.
Ecotoxicology and Environmental Safety ( IF 6.2 ) Pub Date : 2020-01-23 , DOI: 10.1016/j.ecoenv.2020.110222
M G Hinojosa 1 , A I Prieto 1 , D Gutiérrez-Praena 1 , F J Moreno 2 , A M Cameán 1 , A Jos 1
Affiliation  

Cylindrospermopsin (CYN) is a cyanotoxicant which occurrence is increasing due to climate change. Cylindrospermopsin is able to exert damage in the organism at several levels, among them, in the nervous system. Moreover, it is important to take into account that it is not usually present isolated in nature, but in combination with some other pollutants, being the case of the pesticide chlorpyrifos (CPF). Thus, the aim of the present work was to assess the effects of the interaction of CYN in combination with CPF in the human neuroblastoma cell line SH-SY5Y by evaluating cytotoxicity and mechanistic endpoints. The mixtures 0.25 + 21, 0.5 + 42, 1 + 84 μg/mL of CYN + CPF based on cytotoxicity results, were evaluated, and the isobologram method detected an antagonistic effect after 24 and 48 h of exposure. Moreover, although no alterations of reactive oxygen species were detected, a significant decrease of glutathione levels was observed after exposure to both, CPF alone and the combination, at all the concentrations and times of exposure assayed. In addition, CYN + CPF caused a marked decrease in the acetylcholinesterase activity, providing similar values to CPF alone. However, these effects were less severe than expected. All these findings, together with the morphological study results, point out that it is important to take into account the interaction of CYN with other pollutants. Further research is required to contribute to the risk assessment of CYN and other contaminants considering more realistic exposure scenarios.

中文翻译:

cylindrospermopsin和有机磷酸毒死rif的组合在人神经母细胞瘤SH-SY5Y细胞系上的体外评估。

Cylindrospermopsin(CYN)是一种氰基毒素,由于气候变化,其发生率正在增加。Cylindrospermopsin能够在生物体中的多个层次上对神经系统造成损害。此外,重要的是要考虑到它通常不是自然界中孤立存在的,而是与毒死pesticide农药(CPF)一起与其他一些污染物结合使用。因此,本发明的目的是通过评估细胞毒性和机制终点来评估CYN与CPF的相互作用在人成神经细胞瘤细胞系SH-SY5Y中的作用。基于细胞毒性结果,评估了0.25 + 21、0.5 + 42、1 + 84μg/ mL的CYN + CPF混合物,并且等效线图法在暴露24和48小时后检测到拮抗作用。此外,尽管未检测到活性氧的变化,但在所有浓度和暴露时间下,单独接触CPF和联合使用后,谷胱甘肽水平均显着下降。另外,CYN + CPF引起乙酰胆碱酯酶活性的显着下降,提供与单独CPF相似的值。但是,这些影响没有预期的那么严重。所有这些发现以及形态研究结果都指出,重要的是要考虑CYN与其他污染物的相互作用。考虑到更现实的暴露场景,需要进一步的研究来促进CYN和其他污染物的风险评估。在暴露的所有浓度和时间下,单独使用CPF及其组合。另外,CYN + CPF引起乙酰胆碱酯酶活性的显着下降,提供与单独CPF相似的值。但是,这些影响没有预期的那么严重。所有这些发现以及形态研究结果都指出,重要的是要考虑CYN与其他污染物的相互作用。考虑到更现实的暴露场景,需要进一步的研究来促进CYN和其他污染物的风险评估。在暴露的所有浓度和时间下,单独使用CPF及其组合。另外,CYN + CPF引起乙酰胆碱酯酶活性的显着下降,提供与单独CPF相似的值。但是,这些影响没有预期的那么严重。所有这些发现以及形态研究结果都指出,重要的是要考虑CYN与其他污染物的相互作用。考虑到更现实的暴露场景,需要进一步的研究来促进CYN和其他污染物的风险评估。结合形态研究结果指出,重要的是要考虑CYN与其他污染物的相互作用。考虑到更现实的暴露场景,需要进一步的研究来促进CYN和其他污染物的风险评估。结合形态研究结果指出,重要的是要考虑CYN与其他污染物的相互作用。考虑到更现实的暴露场景,需要进一步的研究来促进CYN和其他污染物的风险评估。
更新日期:2020-01-23
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