聚肌胞对CCl4诱导肝损伤小鼠模型肝内自然杀伤细胞的调节作用

目的观察聚肌胞(Poly I∶C)调节肝脏自然杀伤(NK)细胞活性抗CCl_4诱导肝损伤的作用机制。方法 80只C57BL/6小鼠按体质量分层随机分为正常对照组、Poly I∶C对照组、模型对照组和Poly I∶C组。模型对照组和Poly I∶C组予腹腔注射10%CCl_4(2 ml·kg^-1·2 d^-1)诱导肝损伤模型,正常对照组与Poly I∶C对照组予腹腔注射等剂量橄榄油。Poly I∶C对照组和Poly I∶C组均予Poly I∶C腹腔注射(1 mg·kg^-1·2 d^-1),正常对照组与模型对照组均予腹腔注射等体积生理盐水。连续用药4周后,观察血清肝功能及肝组织炎症因子水平;H...

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Published in临床肝胆病杂志 Vol. 31; no. 12; pp. 2077 - 2083
Main Author 彭渊 陶艳艳 黄恺 赵强 刘成海
Format Journal Article
LanguageChinese
Published 上海市中医临床重点实验室,上海201203 2015
上海中医药大学附属曙光医院肝病研究所,上海,201203%上海中医药大学附属曙光医院肝病研究所,上海201203
上海市高校中医内科学E研究院,上海201203
上海市中医临床重点实验室,上海201203%上海中医药大学附属曙光医院肝病研究所,上海201203
肝肾疾病病证教育部重点实验室,上海201203
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ISSN1001-5256
DOI10.3969/j.issn.1001-5256.2015.12.022

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Summary:目的观察聚肌胞(Poly I∶C)调节肝脏自然杀伤(NK)细胞活性抗CCl_4诱导肝损伤的作用机制。方法 80只C57BL/6小鼠按体质量分层随机分为正常对照组、Poly I∶C对照组、模型对照组和Poly I∶C组。模型对照组和Poly I∶C组予腹腔注射10%CCl_4(2 ml·kg^-1·2 d^-1)诱导肝损伤模型,正常对照组与Poly I∶C对照组予腹腔注射等剂量橄榄油。Poly I∶C对照组和Poly I∶C组均予Poly I∶C腹腔注射(1 mg·kg^-1·2 d^-1),正常对照组与模型对照组均予腹腔注射等体积生理盐水。连续用药4周后,观察血清肝功能及肝组织炎症因子水平;HE染色观察肝组织炎症情况;流式细胞术检测肝脏NK细胞及细胞表面激活型受体NKG2D、抑制型受体Ly49A表达。计量资料组间比较采用方差分析,方差齐时采用LSD法,方差不齐时采用Dunnett T3法。结果 Poly I∶C给药1周和4周,正常小鼠肝组织均无明显肝损伤。随CCl_4染毒加重,与正常对照组相比,模型对照组血清ALT、AST和TBil水平逐渐升高(P〈0.01),肝内促炎因子水平上调(P〈0.05),HE染色提示肝细胞大量坏死,肝脏NK细胞比例及NKG2D表达减少、Ly49A表达增多(P〈0.05)。Poly I∶C可改善肝损伤小鼠血清肝功能,降低肝内促炎因子,明显改善肝组织炎症,增加肝脏NK细胞比例、数量及其细胞表面激活型受体NKG2D受体表达(P〈0.01)。结论 Poly I∶C具有良好的抗急、慢性肝损伤作用,其抗肝损伤的作用机制与对NK细胞的激活密切相关。
Bibliography:liver disease; Poly I-C; killer cells natural; carbon tetrachloride
Objective To investigate the effect of polyinosinic- polycytidylic acid( poly I∶ C) on the activation of natural killer cells( NK cells)in the mouse model of liver injury induced by carbon tetrachloride( CCl4). Methods Eighty C57BL/6 mice were randomly divided into normal control group,poly I∶ C control group,model control group,and poly I∶ C group. The mice in model control group and poly I∶ C group were intraperitoneally injected with 10% CCl4( 2 ml·kg^-1·2d^-1) to establish the model of liver injury,and the mice in normal control group and poly I∶C control group were intraperitoneally injected with the same dose of olive oil. The mice in poly I∶ C control group and poly I: C group were intraperitoneally injected with poly I∶ C( 1 mg·kg^-1·2d^-1),and the mice in normal control group and model control group were intraperitoneally injected with the same volume of normal saline. After continuous administration for 4 weeks,serum levels of liver
ISSN:1001-5256
DOI:10.3969/j.issn.1001-5256.2015.12.022