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919糖浆抗大鼠肝纤维化的实验研究
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摘要
目的:
     本实验在以往大量临床及实验观察的基础上,利用现代医学理论及方法,以CCl_4复合因素制备大鼠肝纤维化模型,研究919糖浆对肝纤维化的防治作用及其机理,为指导临床应用提供理论基础和实验依据。
     方法:
     Wistar大鼠72只,随机分为6组,每组12只,除正常组外,其余各组均采用首次大腿皮下注射CCl_45ml/kg体重,以后每周2次皮下注射40%CCl_4的橄榄油溶液3ml/kg体重,共六周。各组均在造模同时灌胃给药,正常对照组及病理造模组每日以生理盐水10ml/kg体重,秋水仙碱组每日以0.1mg/kg体重;919糖浆大、中、小剂量组每日分别为20ml/kg,10ml/kg,5ml/kg体重灌胃大鼠。第6周末将大鼠用2%戊巴比妥钠(45mg/kg)腹腔注射,麻醉后,心脏取血,将血标本送检血清肝纤维化指标(HA、LM、PCⅢ),取新鲜肝组织测羟脯氨酸(Hyp),并取肝左叶,用10%中性福尔马林溶液固定,石蜡包埋切片,HE染色,做肝组织病理学观察。另取部分肝组织用2.5%戊二醛固定后即送电镜室,进行后固定,包埋切片,用透射电子显微镜作肝组织超微病理学观察。
     结果:
     1.919糖浆大、中、小剂量组可显著降低血清透明质酸(HA)、层粘蛋白(LM)、Ⅲ型前胶原(PCⅢ),肝脏羟脯氨酸(Hyp)的值,与模型组比较有非常显著性差异(p<0.01);919糖浆大剂量组与秋水仙碱组的HA、PCⅢ、LM、Hyp值相比无显著性差异(p>0.05);919糖浆大剂量组的HA、PCⅢ、LM、Hyp值均低于919糖浆中、小剂量组(p<0.01)。
     2.病理学观察显示,模型组:光镜下肝细胞变性坏死程度加重,胶原纤维分布明显增多。电镜下肝细胞及细胞器形态结构破坏明显,贮脂细胞、枯否氏细胞增多,胶原纤维分布广泛。919糖浆治疗组的肝组织病变减轻,上述与肝纤维化有关细胞及胶原纤维明显减少。
     结论:
     919糖浆具有确切的抗肝纤维化的作用。其机理可能通过以下作用实现:①保护肝细胞,消除肝纤维化诱发因素;②调整机体的免疫功能;③抑制胶原纤维增生和促进胶原纤维降解。
Objective:
    We applied modern medical to design the experiment on the basis of the former accomplishment this time.The roles of 919 syrup in preventing and treating compounded-factor-induced Hepatic fibrosis were explored in order to provide theoretical and experimental basis for clinic.
    Method:
    72 Wistar rats were randomly divided into 6 groups.Each included 12 rats. The models were induced by complex factors of CCU and foods of high fat and high cholesterol and low protein.40%carbon tetrachloride and olive oil solution 5ml/kg the first day at experiment, was hypodermically injected to all rats except normal group. Since then, the dose was changed into 3ml/kg every other 3~4 days. All groups were treated by perfusing stomach while the rat began to be induced the model. The normal group and hepatic fibrosis model group were treated with sodium chloride lOml/kg everyday; The colchicines treatment group were treated with colchicines O.lmg/ml everyday; The large, middle and small dose 919 syrup treatment group were treated with 919 syrup 20ml/kg, 10ml/kg,5ml/kg espectively everyday. At the end of 6th week, all rats were hocused with 2% pentobarbitalum natricum and killed. The serum level of hyaluronic acid(HA), precollagen type IH(PCIII), laminin(LM)were detected with RIA. The liver tissue was studied
    with pathological observation. Hydroxyproline(Hyp)in liver tissue was detected with Xu ?s methods. All data were compared among the six groups.
    Results:
    1.The level of serum HA,LM,PC1II in rats of treatment groups significantly decreased,the effect has shown significant distinction by comparison with hepatic fibrosis model group ( PC0.01 ) ;There was no difference between the large dose 919 syrup group and the colchicines treatment group in the level of serum HA,LM,PCIHand Hyp( P>0.05 ); The effect of large dose 919 syrup group was better than the other 919 syrup groups ( P<0.01 ) .
    2. Optical injection, the denaturation and necrosis level of hepatocytes and the distribution of collagen fibrosis increased obviously after hypodermic injection of CCU for 6 weeks. Electron microscope, the shape and structure of cell organells were destroyed obviously. Fat storing cells and Kuppfer ?s cells increased. Collagen fibrosis distributed extensively in the model groups. After 6 weeks treated with 919 syrup, the pathological changes and the collagen fibrosis related with hepatic fibrosis above-mentioned decreased significantly.
    Conclusions:
    919 syrup has shown definite effect on anti-hepatic fibrosis.
引文
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