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骆驼奶对雄性大鼠因食用苯醚菊酯引起的肝 CYP1A1 基因表达和 DNA 损伤的缓解作用。

The palliative effect of camel milk on hepatic CYP1A1 gene expression and DNA damage induced by fenpropathrin oral intoxication in male rats.

机构信息

Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, 44511, Egypt.

Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, 44511, Egypt.

出版信息

Ecotoxicol Environ Saf. 2021 Jan 1;207:111296. doi: 10.1016/j.ecoenv.2020.111296. Epub 2020 Sep 16.

Abstract

The present study investigated the alleviating role of camel milk (CM) in the mitigation of fenpropathrin (FNP) type II pyrethroid induced oxidative stress, alterations of hepatic (CYP1A1) mRNA expression pattern, and DNA damage using the alkaline comet assay (SCGE) in male rats. Sixty male Sprague-Dawley rats were separated into six groups (n = 10): 1st control (C), 2nd corn oil (CO), 3rd (CM): gavaged CM 2ml/rat, 4th (FNP): gavaged FNP 7.09 mg/kg body weight (BW), 5th (FNP pro/co-treated): gavaged CM firstly for 15 days, then CM + FNP by the same mentioned doses and route, 6th (FNP + CM co-treated): gavaged FNP firstly followed by CM by the same mentioned doses and route. Rats were orally gavaged three times per week, day after day for 60 days. FNP exposure significantly reduced serum glutathione (GSH) levels, but significantly increased serum levels of superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA), protein carbonyl (PCO), and 8hydroxy2deoxyguanosine (8OH2dG). Additionally, FNP exposure significantly up-regulated the mRNA expression levels of hepatic CYP1A1 and increased the SCGE indices in whole blood, liver, and spleen tissues of exposed male rats. Administration of CM significantly regulated the FNP induced oxidative stress, reduced hepatic CYP1A1 mRNA expression levels and values of comet assay indices particularly in the (CM + FNP pro/co-treated) group compared to the (FNP + CM co-treated) group. In conclusion, our results indicate, for the first time, that FNP retains an in vivo genotoxic potential at a dose of (1/10 LD) and up-regulated hepatic CYP1A1 mRNA expression in male rats. Additionally, CM supplements may improve the genotoxic outcomes, oxidative stress, and altered CYP1A1 mRNA expression induced by FNP particularly in the pro/concurrent-treatment compared to the concurrent treatment alone.

摘要

本研究旨在探讨骆驼奶(CM)在减轻拟除虫菊酯(FNP)Ⅱ型诱导的氧化应激、肝(CYP1A1)mRNA 表达模式改变以及 DNA 损伤中的缓解作用,采用碱性彗星试验(SCGE)对雄性大鼠进行研究。将 60 只雄性 Sprague-Dawley 大鼠分为 6 组(n=10):第 1 对照组(C)、第 2 玉米油组(CO)、第 3 组(CM):灌胃 CM 2ml/大鼠、第 4 组(FNP):灌胃 FNP 7.09mg/kg 体重(BW)、第 5 组(FNP pro/co-处理组):首先灌胃 CM 15 天,然后以相同剂量和途径灌胃 CM+FNP、第 6 组(FNP+CM 共同处理组):首先灌胃 FNP,然后以相同剂量和途径灌胃 CM。大鼠每周口服 3 次,连续 60 天。FNP 暴露显著降低血清谷胱甘肽(GSH)水平,但显著增加血清超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、丙二醛(MDA)、蛋白羰基(PCO)和 8-羟基-2-脱氧鸟苷(8OH2dG)水平。此外,FNP 暴露显著上调肝 CYP1A1mRNA 表达水平,并增加暴露雄性大鼠全血、肝脏和脾脏组织的 SCGE 指数。CM 给药显著调节 FNP 诱导的氧化应激,降低肝 CYP1A1mRNA 表达水平和彗星试验指数值,特别是在(CM+FNP pro/co-处理)组与(FNP+CM 共同处理)组相比。总之,我们的结果首次表明,FNP 在雄性大鼠中以(1/10 LD)的剂量保留体内遗传毒性潜力,并上调肝 CYP1A1mRNA 表达。此外,CM 补充剂可能会改善 FNP 引起的遗传毒性结果、氧化应激和 CYP1A1mRNA 表达改变,特别是在预/同时处理中与单独同时处理相比。

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