Qi Lei, Dong Yan-Mei, Chao Hong, Zhao Peng, Ma Shu-Li, Li Gang
Department of Nutrition and Food Hygiene, Public Health College, Qiqihar Medical University, Qiqihar, 161006, Heilongjiang, China.
Department of Preventive Medicine, Public Health College, Qiqihar Medical University, Qiqihar, 161006, Heilongjiang, China.
Chemosphere. 2023 Feb;315:137751. doi: 10.1016/j.chemosphere.2023.137751. Epub 2023 Jan 3.
Glyphosate, the most widely used herbicide worldwide, has been reported to cause hepatotoxicity. However, these systematic mechanisms remain poorly understood. Here, we investigated the effects of glyphosate-based herbicides (GBH) on liver toxicity in mice exposed to 0, 50, 250, and 500 mg/kg/day GBH for 30 d. Pathological and ultrastructural changes, serum biochemical indicators, oxidative stress state, and transcriptome and key protein alterations were performed to describe the hepatic responses to GBH. GBH induced hepatocytes structural alterations, vacuolation, and inflammatory, mitochondrial swelling and vacuolization; damaged liver function and aggravated oxidative stress; blocked the respiratory chain, promoted gluconeogenesis, fatty acid synthesis and elongation, and activated complement and coagulation cascades system (CCCS) in the liver. Moreover, SOD, HO, and MDA were negatively correlated with the CxI and CxIV genes, but positively correlated with the genes in glucolipid metabolism and CCCS pathways; however, the opposite results were observed for CAT, GSH-Px, and T-AOC. Overall, this study revealed the systematic mechanism underlying hepatotoxicity caused by GBH, providing new insights into understanding the hepatotoxicity of organophosphorus pesticide.
草甘膦是全球使用最广泛的除草剂,据报道可导致肝毒性。然而,这些系统机制仍知之甚少。在此,我们研究了草甘膦基除草剂(GBH)对暴露于0、50、250和500毫克/千克/天GBH 30天的小鼠肝脏毒性的影响。通过病理和超微结构变化、血清生化指标、氧化应激状态、转录组和关键蛋白改变来描述肝脏对GBH的反应。GBH诱导肝细胞结构改变、空泡化以及炎症,线粒体肿胀和空泡化;损害肝功能并加重氧化应激;阻断呼吸链,促进糖异生、脂肪酸合成和延长,并激活肝脏中的补体和凝血级联系统(CCCS)。此外,超氧化物歧化酶(SOD)、血红素加氧酶(HO)和丙二醛(MDA)与CxI和CxIV基因呈负相关,但与糖脂代谢和CCCS途径中的基因呈正相关;然而,过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)和总抗氧化能力(T-AOC)的结果则相反。总体而言,本研究揭示了GBH引起肝毒性的系统机制,为理解有机磷农药的肝毒性提供了新的见解。