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评价低浓度双酚 A 对淡水大头鱼(Aristichthys nobils)的氧化应激、抗氧化酶和遗传毒性。

Evaluation of Oxidative stress, antioxidant enzymes and genotoxic potential of bisphenol A in fresh water bighead carp (Aristichthys nobils) fish at low concentrations.

机构信息

Institute of Pure and Applied Biology, Zoology Division, Bhauddin Zakariya University, Multan, Pakistan.

Department of Pathology, Faculty of Veterinary Sciences, Islamia University of Bahawalpur, Bahawalpur, Pakistan.

出版信息

Environ Pollut. 2021 Jan 1;268(Pt A):115896. doi: 10.1016/j.envpol.2020.115896. Epub 2020 Nov 5.

Abstract

Bisphenol A (BPA) is one of the emerging contaminants associated with deleterious health effects on both public and wildlife and is extensively incorporated into different industrial products. Therefore, the current trial was conducted to determine the oxidative stress, status of different antioxidant enzymes and genotoxic potential of bisphenol A in fresh water fish at low concentrations. For this purpose, a total of 80 fresh water bighead carp (Aristicthys nobilis) received from commercial fish center were randomly divided and kept in four groups (A-D). Fish in groups (B-D) were exposed to different levels of BPA for a period of 60 days while fish of group A served as control group. Treated fish exhibited different physical and behavioral ailments in a time and treatment manners. Results showed significantly (p < 0.05) increased quantity of different oxidative stress biomarkers such as thiobarbituric acid reactive substance (TBARS), reduced glutathione (GSH) and the contents of reactive oxygen species (ROS) in gills, liver, kidneys and brain of exposed fish. Concentration of different antioxidant enzymes like catalase, superoxide dismutase, peroxidase and total proteins was significantly (p < 0.05) decreased in gills, liver, kidneys and brain of exposed fish. Results showed significantly (p < 0.05) increased frequency of morphological alterations, nuclear changes in red blood cells and increased DNA damage potential of bisphenol A in gills, liver, kidneys and brain tissues. The current trial concludes that even at very low concentrations bisphenol A causes toxic effects via turbulences in physiological and biochemical parameters in multiple tissues of fish.

摘要

双酚 A(BPA)是一种新兴的污染物,与公共和野生动物的有害健康影响有关,广泛应用于各种工业产品中。因此,本试验旨在低浓度下测定双酚 A 对淡水鱼类的氧化应激、抗氧化酶活性和遗传毒性。为此,从商业鱼中心随机抽取 80 条淡水白鲳( Aristichthys nobilis)并将其分为四组(A-D)。B、C 和 D 组鱼暴露于不同浓度的 BPA 中 60 天,而 A 组鱼作为对照组。处理后的鱼在不同时间和处理方式下表现出不同的身体和行为异常。结果表明,暴露组鱼的鳃、肝、肾和脑组织中不同氧化应激生物标志物如硫代巴比妥酸反应物(TBARS)、还原型谷胱甘肽(GSH)和活性氧(ROS)的含量显著增加(p<0.05)。抗氧化酶如过氧化氢酶、超氧化物歧化酶、过氧化物酶和总蛋白的浓度在暴露组鱼的鳃、肝、肾和脑中显著降低(p<0.05)。结果表明,暴露组鱼的鳃、肝、肾和脑组织中的形态改变频率、红细胞核变化和 DNA 损伤潜力显著增加(p<0.05)。本试验表明,即使在非常低的浓度下,双酚 A 也会通过扰乱鱼类多个组织的生理和生化参数而产生毒性作用。

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