异烟肼和利福平联用致小鼠肝损伤实验模型的建立

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异烟肼和利福平联用致小鼠肝损伤实验模型的建立
杨淑艳*,钟秀宏,王 爽,温 娜,赵丽微(吉林医药学院,吉林市 132013)
中图分类号 R965;R978.3
文献标识码 A
文章编号 1001-040(8 2011)33-3104-02
摘 要 目的:为异烟肼和利福平联用致小鼠肝损伤实验模型的建立提供参考。方法:取 32 只小鼠,随机均分为对照组(生理盐 水)和模型组(异烟肼+利福平,各 75 mg·kg·d-1),每日定时空腹灌胃给予药物 1 次,灌胃体积为 20 mL·kg·d-1,于第 7、14 天分批处 死小鼠,摘眼球取血测定其血清丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)活性,取肝组织观察其病理学变化和肝匀 浆中丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性变化。结果:与对照组比较,模型组小鼠第 7、14 天的 ALT、AST 活性均明显 增强,第 14 天的 MDA 含量明显增加、SOD 活性明显降低;与第 7 天比较,模型组第 14 天小鼠 AST 显著增加(P<0.05 或 P<0.01)。 病理学观察显示,模型组第 7 天小鼠肝细胞索排列较紊乱,肝细胞体积增大,有少量的肝细胞坏死和炎细胞浸润;第 14 天小鼠肝细 胞索排列紊乱,肝细胞发生坏死较严重,并伴有明显的炎细胞浸润;对照组小鼠未见明显肝细胞损伤。结论:本方法可成功建立小 鼠肝损伤实验模型。 关键词 异烟肼;利福平;肝损伤;模型;小鼠;建立
结核病又称痨病,近年来,在农村发病有上升的趋势。临 床应用的抗结核药物异烟肼、利福平和利福霉素钠等均对肝 有损害作用,是药物肝毒性临床监测的重点药物[1]。由于抗结 核药物致肝损伤的病程在临床实践中难以观察,因此有必要 建立抗结核药物致肝损伤的动物模型。目前国内外均已有关 于抗结核药物诱导肝损伤动物模型的报道,但所用的实验方 法和剂量各不相同,多选用大鼠[2,3]作为动物模型。本研究选 用小鼠作为动物模型,因为小鼠也可用于各种药物的急、慢性 毒理实验,且价格低廉,通过动态观察小鼠肝功能及其组织病 理学变化,了解抗结核药物联用致小鼠肝损伤的程度,可为抗 结核药物的预防研究提供有价值的动物模型。
Establishment of Mice Liver Injury Model by Isoniazid Combined with Rifampacin YANG Shu-yan,ZHONG Xiu-hong,WANG Shuang,WEN Na,ZHAO Li-wei(Jilin Medical College,Jຫໍສະໝຸດ Baidulin 132013,China)
ABSTRACT OBJECTIVE:To provide reference for the establishment of mice liver injury model by isoniazid combined with rifampacin. METHODS:32 mice were randomly divided into control group(normal saline)and model group(isoniazid and rifampacin,each 75 mg·kg·d-1). Mice were given medicine via i.g. gtt. once every day at dose of 20 mL·kg·d-1. Mice were sacrificed on the 7th day and the 14th day. And then aminotransferase(ALT),aspartate aminotransferase(AST)activity of serum were assayed. Pathological changes of liver in experimental mice were observed. Contents of malondialdehyde(MDA)and super- superoxide dismutase(SOD)activity were assayed. RESULTS:Compared with control group,ALT and AST of serum increased significantly in model group on the 7th day and the 14th day. MDA content increased significantly while SOD activity was significantly reduced in model group on the 14th day. Compared the 7th day,AST of serum increased significantly in model group on the 14th day(P< 0.05 or P<0.01). Pathological changes showed that on the 7th day liver cells arranged in cord disorders and cell volume increased. There were a small amount of liver cell necrosis and inflammatory cell infiltration in model group. On the 14th day,liver cells arranged in cord disorder,liver cells necrosis was more severe with significant inflammatory cells infiltration. No significant liver damage was found in control group. CONCLUSION:The method can establish experimental model of liver injury in mice successfully. KEY WORDS Isoniazid;Rifampacin;Liver injury;Model;Mice;Establishment
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