不同价态饮水砷暴露对小鼠肝脏的损伤作用

Journal Title: Di-er Junyi Daxue Xuebao - Year 2008, Vol 29, Issue 5

Abstract

目的:比较不同价态的饮水砷暴露对小鼠肝脏的损伤作用,探讨其可能的损伤机制。方法:60只雄性昆明种小鼠随机分为对照组(饮用蒸馏水)、300 mg/L iAs3+暴露组(iAs3+组)和300 mg/L iAs5+暴露组(iAs5+组),饮水砷暴露10个月后处死小鼠,检测各组小鼠肝功能、肝组织总砷含量,H-E染色及胶原特殊染色(Masson染色)观察各组小鼠肝组织病理学变化;实时荧光定PCR测定各组小鼠肝组织中TNF-α、IL-6、GSH-Px、MMP-8、Col Ⅰ和Col Ⅲ mRNA的表达。结果:iAs3+组小鼠肝组织中砷蓄积量高于iAs5+组(P<0.05);iAs3+组小鼠肝功能差于iAs5+组(P<0.05);H-E染色及Masson染色结果表明iAs3+组小鼠肝组织损伤及纤维化程度重于iAs5+组。与对照组相比,iAs3+、iAs5+组小鼠肝组织TNF-α、IL-6、Col Ⅲ mRNA表达明显升高(P<0.05), MMP-8 mRNA表达明显下降(P<0.05);与iAs5+组相比,iAs3+组小鼠肝组织TNF-α、IL-6、Col ⅠmRNA表达升高(P<0.05)。结论:长期饮水砷暴露可能通过促进肝脏炎症介质及ECM分泌诱导慢性肝损伤、肝纤维化,肝损伤程度与砷的价态及蓄积量有关,且iAs3+损伤作用强于iAs5+。

Authors and Affiliations

Ling LI, Jun WU, Bing OU, Yun ZHANG, Cheng-xiu LI, Ming-liang CHENG, Qin YANG

Keywords

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  • EP ID EP82852
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How To Cite

Ling LI, Jun WU, Bing OU, Yun ZHANG, Cheng-xiu LI, Ming-liang CHENG, Qin YANG (2008). 不同价态饮水砷暴露对小鼠肝脏的损伤作用. Di-er Junyi Daxue Xuebao, 29(5), 499-503. https://europub.co.uk/articles/-A-82852