A cross-sectional survey of occult hepatitis B virus infection in HIV-infected patients in acquired immune deficiency syndrome area / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To assess the prevalence of occult HBV infection in HIV-infected patients inacquired immune deficiency syndrome area.</p><p><b>METHODS</b>Serum samples were obtained from 97 HIV-infected patients who transmitted by paid blood donation. ELISA was used to detect HBV erologic markers (HBsAg, Anti-HBs, HBeAg, anti-HBe and anti-HBc) and HCV antibody. Flow Cytometry were used to detect CD4+ T cell count. Nested PCR was used to amplify surface protein region of HBV DNA.</p><p><b>RESULTS</b>Ninety two patients were HBsAg negative in the 97 HIV-infected patients (94.85%). Twenty seven patients were co-infected with occult hepatitis B virus infection in the 92 HBsAg negative patients (29.35%). Seventy three patients were co-infected with HCV in the 92 HBsAg negative patients(79.35%). CD4 cell count of subjects with occult HBV infection were significantly lower (212.11 +/- 133.1 cells/mm3 versus 318.9 +/- 172.2 cells/mm3, respectively, P < 0.01). A significantly higher prevalence of isolated anti-HBc was observed in HIV-infected subjects co-infectioned with occult HBV infection [62.96% (13 of 27) versus 18.46% (15 of 65), P < 0.01]. No statistical significant association could be established between the age, sex and whether co-infected with HCV.</p><p><b>CONCLUSION</b>It is found that occult HBV infection did occurs in HIV-infected patients. Individuals co-infected with HIV and occult HBV infection are more likely to have isolated anti-HBc than subjects with HIV alone. Co-infection with HIV and occult HBV is more likely to occue in subjects with lower CD4.</p>

Study on the association between chronic hepatitis B cirrhosis and HLA-DRB1 * 1301,1302 allele / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the association between the chronic hepatitis B cirrhosis and HLA-DRB1 * 1301,1302 gene.</p><p><b>METHODS</b>HLA-DRB1 * 1301,1302 allele in 27 patients with chronic hepatitis B cirrhosis and 30 patients with chronic hepatitis B was analyzed by using the polymerase chain reaction/sequence specific primer (PCR-SSP) technique.</p><p><b>RESULTS</b>The frenquency of HLA-DRB1 * 1301,1302 allele in the chronic hepatitis B cirrhosis group was markly higher than that in the chronic hepatitis B group.</p><p><b>CONCLUSION</b>HLA-DRB1 * 1301,1302 is closely associated with the suseptibility to chronic hepatitis cirrhosis.</p>

Study on the association between severe chronic hepatitis B and HLA-DRB1 gene polymorphism / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To study the association between HLA-DRB1 gene polymorphism and severe chronic hepatitis B.</p><p><b>METHODS</b>26 patients with severe chronic hepatitis B were investigated for HLA-DRB1 gene polymorphism by polymerase chain reaction-sequence specific primers technique. The results were compared with those from 45 normal healthy people by use of chi2-test of Microsoft SPSS 13.0.</p><p><b>RESULTS</b>The frequency of HLA-DRB1 * 1301/1302 allele in severe chronic hepatitis B group was significantly higher than the frequency in the control group, while the frequencies of HLA-DRB1 * 1201/1202, 1501/1502 allele were not significantly different.</p><p><b>CONCLUSION</b>HLA-DRB1 * 1301,1302 is closely associated with the suseptibility to severe chronic hepatitis B, While HLA-DRB1 * 1201/1202, 1501/1502 have no association with severe chronic hepatitis B.</p>

Analysis on the decline of hepatitis C virus RNA in the blood using a mathematical model / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To establish a mathematical model of hepatitis C virus (HCV) replication and develop a working theory for antiviral therapy in order to understand the dynamics of HCV replication.</p><p><b>METHODS</b>Peripheral blood cells of 4 hepatitis C patients were cultured. Quantities of the HCV were detected every 15 min by real-time PCR. The data were analyzed using SPSS software. A mathematical functional relationship between HCV RNA and the time lapse was established.</p><p><b>RESULTS</b>The quantity of HCV RNA declined and it fell into a mathematical model: Y=3E+0.8e(-0.5467x) (r=0.9547). The estimated virion half-life was 45 min on the average.</p><p><b>CONCLUSIONS</b>The decline of HCV RNA in the blood is not of a linear trend and the HCV RNA lasts a longer time although the speed of the decline is faster than that in vivo.</p>

The comparison of the effects of three kinds of anti-retroviral therapy on patients with human immunodeficiency virus infection in acquired immune deficiency syndrome area / 中华传染病杂志

0.05);however there were significant difference between D4T+DDI+NVP group and AZT+DDI+NVP group(P

Construction and expression of the recombinant human immunodeficiency virus Tat gene and analysis on its biological characteristics / 中华传染病杂志

Objective To determine the influence of protein fusion on the biological characteris- tics of hymidine kinase(TK)and human immunodeficiency virus(HIV)Tat recombinant protein. Methods By utilizing polymerase chain reaction(PCR)technique,different fragments containing two,four or six glycines(Gly)were inserted between the HIV Tat gene and TK,and cloned into PBK vector.After testified by sequencing,the vectors were transfected into E coli.After induced by iso- propyl thiogalactose(IPTG),bacilli were collected and destructed by ultrasonic,the fusion proteins were determined by monoclonal antibody against HIV protein.HepG2 cells were incubated in DMEM supplement with 10?g/mL HIV-Gly(n)-TK(n=0,2,4,6)fusion protein,TK-HIV Tat and only HIV Tat.HepG2 cells in different groups were detected by immunofluorescence assay 24 hours after transduction with HIV Tat monoclonal antibody.The rate of apoptosis after cells were incubated with gencilovir(10?g/mL)for 3 days was determined by cell flow cytometry,while survival cell ratio was recorded by trypan blue.The data were analyzed by statistics(t-test).Results The Tat-Gly(n)-TK (n= 0,2,4,6)recombinant genes were constructed and inserted into PBK vectors,which were expressed in E coli and then purified.Cells in different groups,which were incubated with Tat-Gly (n)-TK(n=0,2,4,6)fusion proteins,Tat-TK fusion protein,TK-Tat fusion proteins or only Tat proteins respectively,were detected by immunofluorescence assay.The intensities of fluorescence in different groups were almost same,but the ratios of cell survival or apoptosis were different.The highest ratio of cells apoptosis(14.77%)was in the group that cellular culture medium was mixed with Tat-Gly(4)-TK fusion protein,followed by the groups containing 6,2 glycines or no TK gene in genes(4.30%,12.69% and 1.03%,respectively).There were significant differences between each 2 groups among the all groups(t-test,P