汉坦病毒基因组G1区部分酶切位点的研究

用分型RT-PCR方法对34份武汉地区肾综合征出血热患者外周血标本扩增,扩增的目的片段为汉坦病毒M片段G1基因部分序列,应用Hinc Ⅱ和Sac I两种限制性内切酶消化扩增产物,可将汉坦病毒区分为HTN 型和SEO型,结果与分型PCR有很高的一致性,并可迅速筛查在 Hinc Ⅱ和Sac I酶切位点有基因变异的变异株.     

流行性出血热抗病毒治疗的探讨

本文报告105例流行性出血热早期患者,随机分为治疗组与对照组,治疗组应用广谱抗病毒药物病毒唑治疗,对照组为对症治疗,结果发现治疗组较对照组退热和尿蛋白消失时间明显缩短,同时越过低血压休克期和少尿期者明显增加,且特异性循环免疫复合物消失比对照组快。说明抗病毒药物—病毒唑治疗流行性出血热早期患者是有效的。     

汉坦病毒基因组G1区部分酶切位点的研究

用分型RT -PCR方法对 34份武汉地区肾综合征出血热患者外周血标本扩增 ,扩增的目的片段为汉坦病毒M片段G1基因部分序列 ,应用HincⅡ和SacI两种限制性内切酶消化扩增产物 ,可将汉坦病毒区分为HTN型和SEO型 ,结果与分型PCR有很高的一致性 ,并可迅速筛查在HincⅡ和SacI酶切位点有基因变异的变异株     

丙型肝炎患者血浆和外周血单个核细胞同步检测HCV-RNA和HGV-RNA

To understand the incidence of hepatitis C and hepatitis G coinfection, and positive rate of HCV-RNA or HGV-RNA in plasma and PBMC, HCV-RNA and HGV-RNA in plasma and in peripheral blood mononuclear cells(PBMC) of the 40 patients were amplified with RT-PCR. There were 6 and 8 HGV-RNA positive cases in plasma and PBMC, respectively. And there were 5 HGV-RNA positive cases both in plasma and PBMC.At the same time, there were 5,6,3 both HCV-RNA and HGV-RNA positive cases in plasma, in PBMC and in both plasma and PBMC,respectively. It accounted for 13%,15% and 8%, respectively. The HCV-RNA and HGV-RNA positive incidence of PBMC was higher than that of plasma. The incidence of HCV-RNA and HGV-RNA coinfection was similar to European, American and Japanese. The synchronous detection has an important signficance in avoiding leaked diagnosis.     

SABC法和胶体金标免疫电镜观察 体外感染细胞中HCV-NS5的表达

To study the expression of HCV non-structure 5 antigen in vitro, a human HepG2 cell line was incubated with a HCV RNA positive serum. The S ABC i mmunological techniques and gold-labeled colloid electron microscopy method wer e employed to examine for the viral proteins in those cells. The HCV non-struct ure 5 antigen was first detected in the HepG2 cells at 72 hours post incubation. The antigen was continuously observed in the cytoplasm or on the membrane as we ll on the cell wall of the HepG2 cells even after 1, 2, 3 and 4 weeks post incub ation. The observation of HCV non-structure 5 antigen continuously expressed in the HepG2 cells strongly indicates that the cells may have been infected by HCV virus and the virus may have replicated in the cells. Therefore, the HepG2 cell line may be served as a potential host for establishment of HCV infection and p ropagation in vitro.     

乙型肝炎病毒持续感染患者细胞内病毒复制的研究

用Southern blot技术对乙肝病毒感染肝脏和外周血白细胞的情况进行了对比研究,发现白细胞的阳性率为44％,肝组织的阳性率为46％,两者无统计学差异。根据琼脂糖凝胶电泳速度可将病毒DNA分子分为游离型、整合型和混合型,配对检查两者亦无明确相关性,说明外周血白细胞是乙肝病毒攻击的靶细胞,亦是病毒复制的场所。白细胞中病毒DNA游离型与血清学指标HBeAg( ),HBV DNA斑点杂交( )关系密切,而整合型除与上述指标有关外,还和抗-HBe( )有关,表明病毒在乙肝发病过程中复制和部分静止的差异。