乙型肝炎重叠其它肝炎病毒感染的临床研究

目的：探讨ＨＢＶ与共它肝为病毒重叠感染对肝炎患者病情及预后的影响，方法：分析比较了单独ＨＢＶ，ＨＢＶ与ＨＡＶ，ＨＢＶ与ＨＣＶ，ＨＢＶ与ＨＤＶ及ＨＢＶ与ＨＥＶ重叠感染者的临床表现，肝功能，重型肝炎发生频率及其预后，结果：ＨＢＶ与ＨＣＶ和ＨＢＶ与ＨＤＶ重叠感染者发生重型肝炎的频率分别为４４．４％和４０．０％，均显著高于单独ＨＢＶ感染者（２３．１％）ＨＢＶ与ＨＡＶ和ＨＢＶ与ＨＥＶ的重叠感染者发生重型肝炎     

Functional study of the different haplotypes cDNA in the coding region of CⅡTA gene

Objective To study the function of 4 different haplotypes cDNA which are constructed by two non-homonymy single nueleotide polymorphism (SNP) sites C19170G (Leu45Val) and C30799G (Ala500Gly) in the coding region of human CⅡTA gene. Methods HeLa cells were transfeeted with eu-karyotic expression vectors containing four different haplotypes cDNA. C Ⅱ TA mRNA and HLA classⅡanti-gen (HLA-DR, DP, DQ) were respectively detected by RT-PCR and indirect cell immunofluoreseence tech-nique in the untransfected and transfeeted with four eukaryotic expression vectors and empty vectors HeLa cells. The quantity of HLA classⅡ antigen were analyzed by flow eytometry. Results No expression of CⅡTA mRNA and HLA class Ⅱ antigen were observed on original HeLa cells and empty vector transfected cells. CⅡTA mRNA expression was emerged, and the expression of HLA class Ⅱ antigen were observed in the HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA. And there were not significantly different with the levels of HLA class Ⅱ antigen expression among HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA ( P > 0.05 ). Con-dusion The SNP of Chinese at the sites C19170G(Leu45Val) and C30799G(Ala500Gly) in the coding site of C Ⅱ TA gene did not influence capability of CⅡTA trans-aetivating HLA class Ⅱgene expression.     

MHCⅡ类反式激活因子与病毒感染的关系

MHCⅡ类反式激活因子（ClassⅡ transactivator，CⅡTA）通过调控细胞是否表达MHCⅡ类分子及其水平而决定宿主是否对外来病毒感染产生免疫应答及其程度，从而影响病毒感染的发生、发展与转归。本文介绍了CⅡTA的结构与功能、IFNγ诱导MHCⅡ类基因表达的机制及CⅡTA分子与病毒间的相互作用。     

Functional study of the different haplotypes cDNA in the coding region of CⅡTA gene

Objective To study the function of 4 different haplotypes cDNA which are constructed by two non-homonymy single nueleotide polymorphism (SNP) sites C19170G (Leu45Val) and C30799G (Ala500Gly) in the coding region of human CⅡTA gene. Methods HeLa cells were transfeeted with eu-karyotic expression vectors containing four different haplotypes cDNA. C Ⅱ TA mRNA and HLA classⅡanti-gen (HLA-DR, DP, DQ) were respectively detected by RT-PCR and indirect cell immunofluoreseence tech-nique in the untransfected and transfeeted with four eukaryotic expression vectors and empty vectors HeLa cells. The quantity of HLA classⅡ antigen were analyzed by flow eytometry. Results No expression of CⅡTA mRNA and HLA class Ⅱ antigen were observed on original HeLa cells and empty vector transfected cells. CⅡTA mRNA expression was emerged, and the expression of HLA class Ⅱ antigen were observed in the HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA. And there were not significantly different with the levels of HLA class Ⅱ antigen expression among HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA ( P > 0.05 ). Con-dusion The SNP of Chinese at the sites C19170G(Leu45Val) and C30799G(Ala500Gly) in the coding site of C Ⅱ TA gene did not influence capability of CⅡTA trans-aetivating HLA class Ⅱgene expression.     

Functional study of the different haplotypes cDNA in the coding region of CⅡTA gene

Objective To study the function of 4 different haplotypes cDNA which are constructed by two non-homonymy single nueleotide polymorphism (SNP) sites C19170G (Leu45Val) and C30799G (Ala500Gly) in the coding region of human CⅡTA gene. Methods HeLa cells were transfeeted with eu-karyotic expression vectors containing four different haplotypes cDNA. C Ⅱ TA mRNA and HLA classⅡanti-gen (HLA-DR, DP, DQ) were respectively detected by RT-PCR and indirect cell immunofluoreseence tech-nique in the untransfected and transfeeted with four eukaryotic expression vectors and empty vectors HeLa cells. The quantity of HLA classⅡ antigen were analyzed by flow eytometry. Results No expression of CⅡTA mRNA and HLA class Ⅱ antigen were observed on original HeLa cells and empty vector transfected cells. CⅡTA mRNA expression was emerged, and the expression of HLA class Ⅱ antigen were observed in the HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA. And there were not significantly different with the levels of HLA class Ⅱ antigen expression among HeLa cells transfected with eukaryotic expression vectors containing four different haplotypes cDNA ( P > 0.05 ). Con-dusion The SNP of Chinese at the sites C19170G(Leu45Val) and C30799G(Ala500Gly) in the coding site of C Ⅱ TA gene did not influence capability of CⅡTA trans-aetivating HLA class Ⅱgene expression.     

血清TTV-DNA检测及TTV肝炎临床特点初探

目的：了解输血传播病毒（ＴＴＶ）在非甲～庚型肝炎中的感染状况,探讨其在肝炎发病中的作用和地位。方法：采用套式ＰＣＲ法检测血标本中的ＴＴＶ－ＤＮＡ。结果：检测了３０例非甲～庚型肝炎病人,其中血清ＴＴＶ－ＤＮＡ阳性者１１例,阳性率３６．７％。结论：ＴＴＶ感染与ＡＬＴ异常有极为密切的关系,可能是导致非甲～庚型肝炎重要病原。     

他汀类药物在肝病治疗中的应用

他汀类（statins）药物是3-羟基3-甲基戊二酰辅酶A还原酶抑制剂临床上的简称，是目前公认的最主要的降血脂药，在临床应用已近20年。洛伐他汀（10vastatin）是第一个他汀类药物，于1986年研制成功并投入临床应用，此后相继研制出辛伐他汀（simvastatin）、普伐他汀（pravastatin）、氟伐他汀（fluvastatin）、阿托伐他汀（atorvastatin）、匹伐他汀（pitavastatin）、罗苏伐他汀（rosuvastatin）、美伐他汀（mevastatin）和西立伐他汀（cerivastatin）等。近年研究显示，     

早期应用糖皮质激素成功救治急性肝衰竭1例报道

急性肝衰竭是一种少见而难治的临床综合征,病程不定,病死率高,肝移植是目前惟一被证明有效的治疗措施。但因病情的进展迅速、国家对器官移植的管理及经济水平等诸多因素限制了肝移植的临床应用,肝脏辅助装置、肝细胞移植、组织工程仍处于积极研究阶段,尚不能广泛开展于临床［1］。目前,急性肝衰竭患者绝大多数为抗病毒、护肝等药物综合治疗,效果有限,如何快速阻断肝细胞炎性反应,阻止肝细胞大量坏死成为提高其生存率,改善预后的关键。     

地塞米松增强L02细胞P-糖蛋白的表达作用机制的初步研究

目的 探讨地塞米松对人正常肝细胞株L02细胞P-糖蛋白(P-gp)表达的影响,以及磷酸肌醇-3激酶(PI3K)/蛋白激酶B(Akt)途径在调控P-gp表达中的作用.方法 采用Western blot检测体外培养L02细胞P-gp与Akt的表达水平,比较经地塞米松、PI3K/Akt酶抑制剂LY294002及两者联合处理24 h前后L02细胞P-gp表达水平的变化及地塞米松处理24 h前后L02细胞Akt表达水平的差异,分析L02细胞P-gp表达与PI3K/Akt表达之间的关系.结果 10 μmol/L地塞米松刺激24 h后L02细胞P-gp及Akt表达水平较刺激前分别显著增加60.8％ (P =0.026 7)和25.0％ (P =0.035 8);L02细胞中P-gp表达水平与Akt表达水平之间呈显著正相关(Pearson系数=0.87,P＜0.01);LY294002(20 μmol/L)处理组L02细胞P-gp表达水平较对照组(未处理组)显著降低33.8％ (P =0.018 4);地塞米松单独处理组和地塞米松与LY294002联合处理组L02细胞P-gp表达水平分别是对照组的(163.5±18.4)％和(130.1±22.0)％,两者间相差显著(P =0.031 3).结论 地塞米松可能通过激活PI3 K/Akt途径诱导L02细胞P-gp增强表达.     

单磷酸阿糖腺苷联合胸腺肽肌注治疗慢性乙型病毒性肝炎的疗效观察

单磷酸阿糖腺苷联合胸腺肽肌注治疗慢性乙型病毒性肝炎的疗效观察Ｏｂｓｅｒｖａｔｉｏｎｏｎｔｈｅｔｈｅｒａｐｅｕｔｉｃｅｆｆｅｃｔｏｆｉｎｔｒａｍｕｓｃｕｌａｒｉｎｊｅｃｔｉｏｎｏｆａｄｅ┐ｎｉｎｅａｒａｂｉｎｏｓｉｄｅｍｏｎｏｐｈｏｓｐｈａｔｅｃｏｍｂ...