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Effect of quinestrol on body weight, vital organs, biochemicals and genotoxicity in adult male lesser bandicoot rat, Bandicota bengalensis
Pesticide Biochemistry and Physiology ( IF 4.2 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.pestbp.2020.02.010
Ajooni Sidhu 1 , Neena Singla 1 , Milindmitra Lonare 2 , Amrit Kaur Mahal 3
Affiliation  

The present study was aimed to evaluate the toxic effects of quinestrol (a synthetic estradiol) in male lesser bandicoot rat, Bandicota bengalensis. Effect was studied on body weight, weight of vital organs, changes in level of biochemical parameters and genotoxicity. Feeding of bait containing 0.01% quinestrol in bi-choice and 0.02 and 0.03% quinestrol in no-choice for a period of 10 days resulted in total ingestion of 19.50, 67.60 and 243.30 mg/kg bwt, respectively of the active ingredient. Autopsy of rats after 15 and 30 days of treatment withdrawal revealed no significant effect on body weight and weights of vital organs of rats. A significant decrease in the testicular levels of 17-beta hydroxysteroid dehydrogenase and increase in total soluble proteins was observed in rats treated with 0.02 and 0.03% quinestrol. The plasma levels of lipid peroxidation in the form of malondialdehyde concentration and lactate dehydrogenase increased significantly whereas the level of testosterone decreased significantly in treated rats. The plasma levels of acid and alkaline phosphatases, superoxide dismutase and total proteins differed non-significantly among rats of treated and untreated groups. The effect was found reversed partially in rats autopsied after 60 days of treatment withdrawal. No micronuclei in bone marrow cells, no aberrations in chromosomes and no DNA damage in blood cells during comet assay indicated no genotoxic effect of quinestrol on B. bengalensis at the test doses administered. The results thus revealed that quinestrol causes reversible toxic effects in the form of oxidative stress, increased lytic enzyme activity and decreased steroidogenesis which may further lead to testicular damage thereby inhibiting reproductive function. Also more effect was shown at higher doses ingested in no-choice test as compared to low doses ingested in bi-choice tests.

中文翻译:

喹诺酮对成年雄性小袋狸鼠(Bandicota bengalensis)体重、重要器官、生化指标和遗传毒性的影响

本研究旨在评估喹雌醇(一种合成雌二醇)对雄性小袋狸鼠(Bandicota bengalensis)的毒性作用。研究了对体重、重要器官的重量、生化参数水平的变化和遗传毒性的影响。在 10 天内喂食含有 0.01% quinestrol 的双选和 0.02% 和 0.03% quinestrol 的诱饵 10 天,导致总摄入量分别为 19.50、67.60 和 243.30 mg/kg bwt 的活性成分。停药 15 天和 30 天后对大鼠的尸检显示对大鼠的体重和重要器官的重量没有显着影响。在用 0.02% 和 0.03% 喹雌酮治疗的大鼠中观察到睾丸 17-β 羟基类固醇脱氢酶水平显着降低和总可溶性蛋白增加。血浆中以丙二醛浓度和乳酸脱氢酶形式存在的脂质过氧化水平显着增加,而睾酮水平在治疗大鼠中显着降低。酸性和碱性磷酸酶、超氧化物歧化酶和总蛋白的血浆水平在治疗组和未治疗组大鼠之间没有显着差异。在停止治疗 60 天后尸体解剖的大鼠中发现该效果部分逆转。在彗星试验期间,骨髓细胞中没有微核,染色体中没有畸变,血细胞中没有 DNA 损伤,这表明在施用的测试剂量下,喹甾酮对孟加拉芽孢杆菌没有遗传毒性作用。因此,结果表明,喹诺酮以氧化应激的形式引起可逆的毒性作用,裂解酶活性增加和类固醇生成减少,这可能进一步导致睾丸损伤,从而抑制生殖功能。与在二选一测试中摄入的低剂量相比,在无选择测试中摄入的较高剂量也显示出更多的效果。
更新日期:2020-05-01
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