腹腔镜肝脓肿引流术治疗体会

目的：探讨腹腔镜肝脓肿引流手术的适应证、手术步骤、手术要点及其临床意义.方法：回顾性分析自2010年1月-2014年3月间进行的腹腔镜肝脓肿引流手术20例.结果：20例手术均获成功,患者治愈出院.结论：腹腔镜肝脓肿引流术操作简单、手术创伤小、术后病人恢复快、并发症少、腹腔污染少,是治疗肝脓肿的有效方法之一.     

Effect of local hyperthermia induced by nanometer magnetic fluid on the rabbit VX2 liver tumor model

Hyperthermia induced by magnetic nanoparticles is a recent therapeutic approach for local targeting of hyperthermia and thermoablation and is a promising treatment of malignant tumors.The purpose of this study is to evaluate the potential and therapeutic effect of magnetic fluid hyperthermia on the rabbit VX2 liver tumor model.Rabbits bearing liver tumors 14 days after tumor implantation were randomly divided into five groups of 10 cases each,including three control groups and two hyperthermia groups.Hyperthermia was carried out immediately after a single intratumoral injection of uncoated water-based Fe3O4 magnetic fluid under an alternating magnetic field only once as one hyperthermia group and repeated hyperthermia after 5 days as the other treated group.The distribution of magnetic fluid was evaluated by CT scanning.All animals were sacrificed 4 weeks after tumor implantation.The therapeutic effect was determined by tumor size and macroscopic and pathological examination of the liver tumor.The local higher density imaging of intratumoral magnetic fluid deposits compared to the surrounding tissue was clearly observed by CT scanning.Twenty-eight days after tumor implantation,the tumor maximal diameter and tumor volume of two hyperthermia were both significantly less than those of control groups (P＜0.05).Tumor volume inhibition by single or repeated hyperthermia compared to the three control groups was 71.93-79.91% and 92.34-94.46% (P＜0.05),respectively.Under a microscope,coagulation necrosis was observed in the heated area,which had a clear boundary line with the surrounding tissue.The intratumoral distribution of magnetic nanoparticles,especially in the area of necrosis,appeared much more homogenous than in the untreated ones.This study demonstrates that hyperthermia induced by direct intratumoral injection of magnetic fluid can be used safely,and a well-homogenized distribution of high intratumoral temperature without heating adjacent to normal tissue can be achieved.     

金纳多对大鼠肝脏缺血再灌注损伤保护作用的实验研究

目的：探讨金纳多对大鼠肝脏缺血再灌注损伤的保护和治疗作用.方法：通过预先对大鼠肝脏缺血再灌注模型静脉注射金纳多,测定血浆中肝功能酶学指标（ALT,AST）的水平,流式细胞仪检测肝细胞凋亡情况,对肝细胞进行组织病理损伤评价.结果：治疗组大鼠血浆中AST、ALT的含量在三个时点明显低于各相同时点I/R组（P〈0.05）,治疗组大鼠肝脏细胞凋亡率相对于I/R组明显降低（P〈0.05）,同时病理学观察也提示肝脏缺血再灌注损伤时,治疗组的病理损害要轻于I/R组.结论：金纳多通过减少肝细胞的凋亡,减轻了肝组织的病理损害,降低了肝脏酶学的指标,从而起到了对肝脏的保护作用.     

Growth potential of human hepatocarcinoma cells in the liver of neonatal immunocompetent mice and its relation to immunological tolerance

To determine the pathological behavior of human hepatocarcinoma cells in the liver microenvironment of neonatal non-immunode-ficient mice, three human hepatocarcinoma cell lines (Bel7402, HepG2, and SK-Hep-1), traced by DiI, were transplanted into the intrahepatic or subcutaneous tissue of neonatal and adult Kunming mice. Histopathological observations showed that cells in the adult liver induced a severe immune response as early as the second day after the implantation, while the subcutaneous neoplasm underwent extensive necrosis by the end of the study. Only the cells injected into the neonatal liver underwent a delayed immunologic rejection in the organ microenvironment. These cells retained recognizable tumor features over the first seven days, and displayed an intrahepatic invasive pattern. The expression of tumor markers including alpha-fetoprotein and survivin was maintained. The quantitative ELISA for the expression patterns of IL-2 and IL-10 also confirmed that the intrahepatic immunity was non-susceptive during this period. The high serum alpha-fetoprotein level was inversely correlated with the change in immune response. Our study provided a bio-system for the research of immune responses to xenografts in the liver.     

Age-dependent changes of rat liver plasma membrane composition

Summary The chemical composition of liver plasma membrane was studied in Wistar rats aged between 3 and 24 months. Results obtained indicate a significant age-dependent positive correlation of both the protein:phospholipid and cholesterol:phospholipid ratios, whereas the protein:cholesterol ratio seems to remain unaffected. Phospholipid analysis of liver plasma membrane reveals that only the phosphatidylcholine content has a significant negative correlation with age; all other phospholipid species remain basically unchanged.Supported by a grant of the Italian National Research Council, Project Preventive and Rehabilitative Medicine, Subproject Mechanisms of Aging.     

肝郁脾虚证动物模型的研究进展

对近年来肝郁脾虚证动物模型的研究现状进行了评述 ,对存在的问题进行了分析讨论。肝郁脾虚证动物模型主要有CCl4 ,注射法、高脂饲料饲喂与CCl4 注射联合造模法、夹尾激怒加苦寒泻下法、限食限动加结肠注射醋酸法复制肝郁脾虚证或肝郁脾虚证溃疡性结肠炎病证结合模型 ,为肝郁脾虚证的深入研究开辟了新途径。但还存在一些问题 ,应进一步提高和完善 ,如在造模方法上应尽可能注意与中医传统病因学说的相似性 ,在模型症状指标上应结合动物的生理、病理特征建立起符合动物特性的统一的判断标准 ,并建立起本模型的生物学特征 ,在客观指标的确立上应重视多指标互参 ,在复健方药的选择上应力求标准化     

西洋参在不同溶剂中对肝糖原相关指标的影响

目的　研究不同溶剂西洋参对小鼠肝糖原及其相关指标的影响。方法　分别以水和食用油为溶剂给予小鼠3 3 3、3 3 3 3和 10 0 0 0mg/kg同一种西洋参产品 ,3 0d后检测肝糖原、血糖、甘油三酯、极低密度脂蛋白和丙氨酸氨基转移酶等指标。结果　西洋参水溶剂 3 3 3mg/kg组小鼠肝糖原明显升高 (P <0 0 5) ,3 3 3 3、10 0 0 0mg/kg组甘油三酯和极低密度脂蛋白显著性下降 (P <0 0 5) ;西洋参油溶剂 3 3 3、3 3 3 3和 10 0 0 0mg/kg组均可降低小鼠丙氨酸氨基转移酶 (P <0 0 5或P <0 0 1) ,而对肝糖原及甘油三酯和极低密度脂蛋白影响无显著性 ;与水溶剂组比较 ,食用油组可使丙氨酸氨基转移酶显著性升高 (P <0 0 5) ,甘油三酯和极低密度脂蛋白显著性降低 (P <0 ,0 1) ,同时血糖也显著性升高 (P <0 0 1)。结论　食用油对小鼠的糖代谢及脂肪代谢有影响 ,选择其作溶剂应慎重     

昆明种小鼠抗疲劳试验中若干参考值测定

本文就抗疲劳功能试验中的四项指标进行研究分析,旨在了解各项指标的动态变化,确定其参考值.结果显示小鼠负重(5%体重)游泳时间参考值为196～1420 s(密度为48 cm2/只,25℃水温);小鼠基础血乳酸参考值为1.77～6.56 mmol/L;短时剧烈运动血乳酸参考值为3.55～9.29 mmol/L;小鼠基础血清尿素氮参考值为7.86～13.14mmol/L;长时运动后血清尿素氮参考值为6.97～24.90mmol/L;小鼠基础肝糖原参考值为1452.8～5279.4 mg/100g肝组织,长时大强度运动后肝糖原参考值为39.9～3163.3 mg/100g肝组织.     

四氧嘧啶对小鼠肝指数和MDA含量的影响

给小鼠以 12 0mg·Kg-1体重的剂量腹腔注射四氧嘧啶的生理盐水溶液 ,可引发动物肝指数下降 ,肝脏丙二醛 (MDA)含量升高 ,从而造成肝损伤     

肝硬化CT改变与Child—Pugh分级相关性的初步研究

目的探讨肝硬化的肝脏形态、侧支循环、腹水、脾脏以及胆囊等CT改变与肝功能Child—Pugh分级的相关性。寻找对肝功能最有评价价值的CT表现,以期为肝硬化的肝功能评价、治疗和疗效观察提供帮助。方法回顾性分析确诊为肝硬化的99例住院病人的肝功能（Child—Pugh分级：A18．2％,Child—PughB41．4％,Child—PughC40．4％）及CT检查结果,探讨肝硬化患者的CT表现与Child—Pugh分级的关系。肝硬化CT表现纳入参数的有形态改变、侧支循环、腹水、脾大、胆囊改变。将上述观察指标与Child—Pugh分级作对照研究和统计学分析。结果肝脏CT形态改变和胆囊改变与Child—Pugh分级呈明显相关性;侧支循环、脾大与Child—Pugh分级相关性不大。结论肝硬化CT改变能提示肝功能状态,有望作为Child—Pugh分级的有益补充。