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糖尿病大鼠肝脏组织中氧化应激标志物的表达变化及意义 被引量:6

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摘要 目的观察糖尿病大鼠肝脏组织中氧化应激标志物的表达变化,并探讨其意义。方法 36只Wistar大鼠随机分为正常对照组(NC组)、糖尿病维持组(DM组)、糖尿病治疗组(DT组)。DM组、DT组按60 mg/kg一次性腹腔注射链脲佐菌素进行造模,NC组注射等量柠檬酸缓冲液。造模成功后,DM组大鼠皮下注射鱼精蛋白锌胰岛素(PZI)2~4 U/2 d,DT组皮下注射PZI 9~12 U/(kg·d),NC组则注射等量的生理盐水。12周后,检查各组大鼠体质量、血糖、血脂、肝功能,比色法测定各组大鼠肝脏组织中总超氧化物歧化酶(TSOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)、总抗氧化能力(TAOC)、丙二醛(MDA),并对各组大鼠肝脏组织进行HE、PAS染色和硝基酪氨酸(NT)免疫组化染色。结果 12周后,与NC组、DT组相比,DM组大鼠TC、TG、ALT、AST水平增高,大鼠肝脏组织MDA水平、TAOC、TSOD活性、CAT活性、GSH-Px活性增高(P均〈0.05)。DM组大鼠肝脏组织存在脂肪变性,PAS阳性的糖原颗粒少且分布不均匀,而在DT组中这些病变明显改善。NT在DM组的表达较NC组、DT组强(P均〈0.05)。结论糖尿病大鼠肝脏组织中氧化应激增强,治疗后减轻,氧化应激可能是导致大鼠肝脏组织受损的机制之一。
出处 《山东医药》 CAS 北大核心 2015年第7期26-28,共3页 Shandong Medical Journal
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参考文献14

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