Proapoptotic and pronecrosis effect of different truncated hepatitis C virus core proteins

Objective: To study the roles of different truncated hepatitis C virus (HCV) core proteins (CORE) in the pathogenesis of HCV persistent infection and hepatocellular carcinoma (HCC) and to assess intracellular localization in transiently transfected cells. Methods: Seven truncated CORE-GFP (green fluorescent protein) fusion protein expression plasmids were constructed,which contained HCV CORE sequences derived from tumor tissues (BT) and non-tumor tissues (BNT) from one patient infected with HCV. Amino acid (aa) lengths were BT: 1-172 aa, 1-126 aa, 1-58 aa, 59-126 aa, 127-172 aa; BNT: 1-172 aa and C191:1-172 aa respectively. Subcellular localization of CORE-GFP was analyzed by con-focal laser scanning microscope. Apoptosis and necrosis were quantified by flow cytometry. Results: Different truncated CORE-GFP localized mainly in the cytoplasm, but nuclear staining was also observed. HCV CORE could induce apoptosis and necrosis, and different truncated COREs could induce cell apoptosis and necrosis at different levels. Among the same length 1-172 aa of BT, BNT and C191, the cell apoptosis and necrosis percentage of BT is highest, and C191 is the lowest (BT＞BNT＞C191). To the different fragment COREs of BT,N-terminal of CORE induced apoptosis and necrosis higher, compared with that of C-terminal (1-172 aa＞1-126 aa＞1-58aa＞ 127-172 aa＞59-126 aa). Conclusion: These results suggest HCV CORE could induce apoptosis and necrosis of cells, which might play an important role in the pathogenesis of HCV persistent infection and HCC and the different CORE domains of different HCV quasi-species might have some difference in their pathogenesis.     

2012年大理州住院分娩乙型肝炎母婴阻断与护理干预

目的：探讨乙肝母婴阻断的过程中的护理干预要点,有效提高阻断母婴成功率。方法：对HBsAg（乙型肝炎表面抗原）阳性孕产妇的新生儿采用Hepb／HBIG（重组乙型肝炎疫苗／乙肝免疫球蛋白）免疫接种及护理干预。结果：大理州累计检测2012年1月至6月新生儿实施乙肝母婴阻断,经乙肝两对半检测结果,HBsAg及HBeAg均为阴性160例,阻断成功率98．16％。结论：对新生儿及时接种Hepb／HBIG和对孕产妇进行护理干预,可有效提高母婴阻断率和成功率。     

Enhancing cellular immune response to HBV M DNA vaccine in mice by codelivery of interleukin-18 recombinant

INTRODUCTIONChronicinfectionwithHBVaffectsmorethan250millionpeopleworldwide.Therearemorethan120millionchronicHBVcarriersinChina;appro-ximately10percentofthemremaininstateofchronichepatitisandhaveahighriskofdevelop-mentofcirrhosisandhepatocellularcarcinoma.ButthereisnoeffectivemethodtocontrolchronicHBVinfectionatpresent.Recentdataindicatedthatim-munotherapeuticstrategiesstimulatingbothcellularandhumoralimmuneresponsestoHBVantigensareessentialforcuringchronicHBVinfection(ChisariandFe…     

临床145份血清标志HBsAg,HBeAg,Anti－HBc与HBV－DNA的检测结果分析

本通过145份乙型肝炎血清标本免疫测定乙肝病毒抗原抗体及PCR检测结果进行统计分析，研究两种测定结果的临床意义及相关性。     

乙型肝炎患者血清HBV-DNA、PreS1、HBeAg之间的相关性分析

目的:分析乙型肝炎患者血清病毒DNA(HBV-DNA)与前S1抗原(PreS1)及e抗原(HBeAg)的关系,评价PreS1的临床检测意义。方法:筛选179例实时荧光定量PCR HBV-DNA水平阳性患者血清,采用ELISA法检测PreS1和HBeAg。结果:179例HBV DNA阳性血清中,HBeAg总阳性率为66.5%,随着HBV-DNA水平的升高,HBeAg的检出率大幅升高。PreS1总阳性率为83.8%,在三组不同的HBV DNA水平中,1组与2组、2组与3组间无差别(P>0.05),仅1组与3组间存在一定的差异(χ2=9.38,P<0.05)。结论:PreS1与HBV-DNA密切相关,PreS1检测可反映其体内HBV病毒的复制情况,具有一定的临床价值。     

Metabonomic analysis of hepatitis B virus-induced liver failure: identification of potential diagnostic biomarkers by fuzzy support vector machine

Hepatitis B virus (HBV)-induced liver failure is an emergent liver disease leading to high mortality. The severity of liver failure may be reflected by the profile of some metabolites. This study assessed the potential of using metabolites as biomarkers for liver failure by identifying metabolites with good discriminative performance for its phenotype. The serum samples from 24 HBV-induced liver failure patients and 23 healthy volunteers were collected and analyzed by gas chromatography-mass spectrometry (GC-MS) to generate metabolite profiles. The 24 patients were further grouped into two classes according to the severity of liver failure. Twenty-five commensal peaks in all metabolite profiles were extracted, and the relative area values of these peaks were used as features for each sample. Three algorithms, F-test, k-nearest neighbor (KNN) and fuzzy support vector machine (FSVM) combined with exhaustive search (ES), were employed to identify a subset of metabolites (biomarkers) that best predict liver failure. Based on the achieved experimental dataset, 93.62% predictive accuracy by 6 features was selected with FSVM-ES and three key metabolites, glyceric acid, cis-aconitic acid and citric acid, are identified as potential diagnostic biomarkers.     

对纳米金免疫传感器的初步研究

本课题使用集成电路加工技术制作微型电极,实现传感器的微型化和提高测量结果的可靠性,并为实现纳米金生物传感器的多功能化检测技术打下基础。     

Combination of small interfering RNAs mediates greater inhibition of human hepatitis B virus replication and antigen expression

INTRODUCTION Chronic infection by hepatitis B virus (HBV) isassociated with a high risk of liver cirrhosis and pri-mary hepatocellular carcinoma (HCC). It remains animportant global health problem with over 350 mil-lion chronic HBV carriers worldwide. Among thesechronic carriers, about one million people die ofHBV-associated liver failure or HCC annually (Kaoand Chen, 2002). Although chronically infected pa-tients have been treated with interferons and nucleo-side analogs, th…     

2010年广西运动员HBsAg、抗-HBs现状调查

对2010年广西运动员乙型肝炎表面抗原（HBsAg）、表面抗体（抗-HBs）、分布特点以及发病率进行调查分析。结果表明：广西现役运动员抗-HBs凰阳性率高达48．13％,略高于1997年;HnsAg阳性率大幅降低。     

Association between serum vitamin D and severity of liver fibrosis in chronic hepatitis C patients: a systematic meta-analysis

To conduct a systematic review of group studies assessing the association of serum vitamin D status with the severity of liver fibrosis in chronic hepatitis C patients using meta-analysis. The relevant research literatures were identified by searching PubMed and EMBASE databases prior to October 2013 with no restrictions. We included group studies that reported odds ratio (OR) estimates with 95% confidence intervals (CIs) or a mean with standard deviation (SD) for the association between serum vitamin D status and the severity of liver fibrosis in chronic hepatitis C patients. Approximately 8321 participants from several countries were included in this analysis. Six studies on serum vitamin D status and the severity of liver fibrosis were included in this meta-analysis. ORs with 95% CIs were extracted from four studies and the pooled ORs were 0.866 (95% CI, 0.649 to 1.157). The means with SDs were extracted from three studies and the pooled means were −0.487 (95% CI, −0.659 to −0.315). There was statistically significant heterogeneity among the mean data extracted studies (P=0.029; I ²=71.8%) but not among the OR data extracted studies (P=0.061; I ²=55.6%). Finally, results from the mean data extracted studies suggest that lower serum vitamin D is a risk factor for the severity of liver fibrosis in chronic hepatitis C patients. However, there is no conclusive evidence on this association because of inconsistencies between the OR data extracted studies and the mean data extracted studies.