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The relationship between cyto-genotoxic damage and oxidative stress produced by emerging pollutants on a bioindicator organism (Allium cepa): The carbamazepine case.
Chemosphere ( IF 8.1 ) Pub Date : 2020-04-03 , DOI: 10.1016/j.chemosphere.2020.126675
Sandra García-Medina 1 , Marcela Galar-Martínez 1 , Leobardo Manuel Gómez-Oliván 2 , Rosalía María Del Consuelo Torres-Bezaury 1 , Hariz Islas-Flores 2 , Eloy Gasca-Pérez 3
Affiliation  

The carbamazepine (CBZ) is one of the most frequently detected anticonvulsant drugs in water bodies. Although there are reports of its ecotoxicological effects in the scientific literature, toxicity studies have not focused on establishing the mechanism by which CBZ produces its effect at environmentally relevant concentrations. The objective of this work was to evaluate cyto-genotoxicity and its relationship with oxidative stress produced by carbamazepine in the Allium cepa model. The cytotoxicity and genotoxicity, as well as the biomarkers of oxidative stress were analyzed in the roots of A. cepa, exposed to 1 and 31.36 μg L-1 after 2, 6, 12, 24, 48 and 72 h. The results show that genotoxic capacity of this drug in the roots of A. cepa is related to the generation of oxidative stress, in particular with production of hydroperoxides and oxidized proteins. Also, the cytotoxic effect has a high correlation with DNA damage. The results of the present study clearly indicate that bioassays with sensitive plants such as A. cepa are useful and complementary tools to evaluate the environmental impact of emerging contaminants.

中文翻译:

在生物指示剂生物体(葱属)上出现的污染物所产生的细胞遗传毒性损害与氧化应激之间的关系:卡马西平案。

卡马西平(CBZ)是水体中最常检测到的抗惊厥药物之一。尽管科学文献中已经报道了其生态毒理学作用,但是毒性研究并未集中于建立CBZ在环境相关浓度下产生作用的机理。这项工作的目的是评估卡马西平在葱属cepa模型中的细胞遗传毒性及其与氧化应激的关系。在2、6、12、24、48和72 h暴露于1和31.36μgL-1的A. cepa根中,分析了细胞毒性和遗传毒性以及氧化应激的生物标记。结果表明,该药物在洋葱曲霉根中的遗传毒性与氧化应激的产生有关,特别是氢过氧化物和氧化蛋白质的生产。而且,细胞毒性作用与DNA损伤高度相关。本研究的结果清楚地表明,用敏感植物(如洋葱曲霉)进行生物测定是有用的和补充性的工具,可以评估新兴污染物对环境的影响。
更新日期:2020-04-03
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