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促肝细胞生长素对急性肝功能衰竭大鼠肝组织Ki-67表达的影响 被引量:1

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摘要 目的:观察促肝细胞生长素(hepatocyte growth—promoting factors,pHGF)对急性肝功能衰竭大鼠肝组织Ki-67表达的影响,探讨肝细胞再生的规律. 方法:SD大鼠随机分为正常对照组、D-氨基半乳糖(D- Galactosamine,D-GalN)组和D-GalN+pHGF组,以D- GalN 1.2 g/kg腹腔注射制备大鼠急性肝功能衰竭模型,2 h 后D-GalN+pHGF组大鼠每24 h腹腔注射pHGF:2 mg/kg, 并分别于第1、3、5、7、9、11、13、15 d处死各组大鼠6 只.如果该时间点前每组有濒死大鼠则提前处死,使每组各时间点处死大鼠总数为6只.采用S-P免疫组织化学法检测肝组织中Ki-67的表达. 结果:D—GalN组大鼠肝组织Ki-67标记指数(Ki-67 label- ing index,Ki-67-LI)在模型建立成功后第5 d达峰值,以后急剧下降,在第15 d时达到正常对照组水平,但D- GalN+pHGF组大鼠Ki-67-LI峰值于第3 d出现,比D-GalN 组早,持续时间长,且各时间点的Ki-67-LI均明显高于D- GalN组,在第15 d时仍未降至正常对照组水平,与之相比, 明显升高(P<0.01).D-GalN组及D—GalN+pHGF组肝细胞数量逐渐增多,但除第1 d外,D—GalN+pHGF组各时间点肝细胞数量明显高于D-GalN组(P<0.01). 结论:急性肝功能衰竭时,残存的肝细胞仍有再生能力, 但其再生过程受到抑制.pHGF可以提高急性肝功能衰竭大鼠肝组织Ki-67的表达,从而促进肝细胞的再生,但其再生程度同样受到一定程度的抑制.
出处 《世界华人消化杂志》 CAS 北大核心 2005年第6期784-786,共3页 World Chinese Journal of Digestology
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参考文献16

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