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        find Keyword "乙型肝炎病毒" 39 results
        • Advanced Research of Association of HBV with Spontaneous Rupture of Hepatocellular Carcinoma

          Objective To study the relationship of hepatitis B virus (HBV) to spontaneous rupture of hepatocellular carcinoma (HCC-SR) and its mechanism. Method The related literatures about theory of HCC-SR were consulted and reviewed. Results The injury of small arteries was usually followed in patients with HCC-SR, which was related to vascular autoimmune injury caused by the HBV infection. The small arteries in which immune complex deposited were readily injured, as a result HCC-SR happened while vascular load increased. Conclusion The HBV infection resulted in vascular autoimmune injury maybe a important factor in the pathogenesis of HCC-SR.

          Release date:2016-09-08 10:23 Export PDF Favorites Scan
        • Efficacy of Antiviral Drugs for Hepatitis B with YMDD Motif Variant: A Systematic Review

          Objective To evaluate the efficacy and safety of antiviral drugs for hepatitis B with YMDD motif variant. Methods We electronically searched MEDLINE (1989-April, 2004), EMBASE (1989-April, 2004), CBMdisc (expand) (1989-April, 2004), and handsearched unpublished Chinese conference proceedings. Randomized and quasi-randomized trials in patients with chronic hepatitis B with YMDD motif variant correlative to lamivudine were collected. Two reviewers extracted the data and assessed the quality of literature independently. The data were then analyzed by RevMan 4.2 software. Results Five studies involving 6 trials and 284 patients were included. According to the results of meta-analysis, antiviral therapy with adefovir plus lamivudine showed significantly better effects on the clearance of serum HBV-DNA and HBeAg and normalization of ALT than that of lamivudine alone (RR 16.61, 95%CI 2.29 to 120.71; RR 6.66, 95%CI 1.23 to 35.88 and RR 6.26, 95%CI 2.29 to 17.12 respectively); also, oxymatrine plus thymothin showed obviously better effects on the clearance of serum HBV-DNA and HBeAg (RR 2.96, 95%CI 1.26 to 6.93 and RR 2.51, 95%CI 1.05 to 5.98 respectively).But adefovir alone showed no better effects on clearance of serum HBV-DNA and HBeAg than that of lamivudine alone (RR 11.00, 95%CI 0.65 to 186.02 and RR 7.00, 95%CI 0.39 to 126.92 respectively); interferon plus lamivudine showed no better effects on the clearance of serum HBV-DNA, HBeAg and the normalization of ALT (RR 3.50, 95%CI 0.90 to 13.58; RR 4.90, 95%CI 0.70 to 35.10 and RR 2.80, 95%CI 0.91 to 8.12 respectively). Chinese herbs plus lamivudine showed no better effects on the clearance of serum HBV-DNA (RR 1.16, 95%CI 0.89 to 1.51). There were no significant side effects in the groups, except flu like symptom in the interferon group, slight kidney impairment in the adefovir group, and aggravation of rare cases in lamivudine group. Conclusions Antiviral therapy with adefovir plus lamivudine, or oxymatrine plus thymothin, shows better effects than with lamivudine alone in terms of antiviral therapy and clinical outcome improvement. However, the evidence is too weak to draw a definite conclusion in this systematic review. Larger sample size and rigorously designed randomized, double blind, placebo control trials are required for future study.

          Release date:2016-09-07 02:27 Export PDF Favorites Scan
        • 重組聚合酶鏈反應擴增乙型肝炎病毒跨直接重復序列區DNA片段方法的建立

          目的建立使用重組聚合酶鏈反應(PCR)擴增乙型肝炎病毒(HBV)跨直接重復序列(DR)區DNA 片段的方法。 方法使用Primer5 引物設計軟件,以黏性末端為基礎設計引物,HBV“大三陽”乙型肝炎表面抗原(+)、乙型肝炎核心抗體(+)、乙型肝炎e 抗原HBeAg(+)] 血清提取DNA 為PCR 模板,第1 輪PCR 分段擴增,第2 輪PCR 以粘性末端為引物兩端補齊,第3 輪PCR 擴增整段HBV 跨DR 區DNA 片段。 結果成功重組出HBV跨DR 區缺口的DNA 片段。 結論建立了HBV 跨DR 區DNA 片段的擴增方法,為該段DNA 片段功能的研究打下了基礎。

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        • Prevention of HBV Reinfection in Perioperative Period of Liver Transplantation

          Objective To investigate the prevention of HBV reinfection in the perioperative period of liver transplantation on HBV-related diseases. Methods Published papers were collected and reviewed. Results HBV-related diseases were the main indications of liver transplantation.The prevention for HBV reinfection affects the survivals remarkably. Nowadays, a lot of medication have been used in the prevention of HBV reinfection, and the therapeutic regimens were different from each other. Conclusion Liver transplantation is an effective treatment for HBV-related disease. Appropriate prevention of HBV reinfection in the perioperative period of liver transplantation is important for the survivals of patients.

          Release date:2016-08-28 04:08 Export PDF Favorites Scan
        • Research progress of long non-coding RNAs in hepatitis B virus-related hepatocellular carcinoma

          Long non-coding RNA (lncRNA) is a type of nucleic acid sequence that exceeds 200 nucleotides in length and cannot encode any complete protein. In recent years, its important regulatory role in various pathophysiological processes has been gradually clarified, however, few studies have reported its role in carcinogenic virus infection. This article summarizes the currently known lncRNAs abnormally expressed in hepatitis B virus-induced hepatocellular carcinoma, and focuses on the mechanisms of lncRNAs regulating the occurrence and development of hepatitis B virus-related hepatocellular carcinoma such as controlling virus replication and host immunity, cell cycle and proliferation, invasion and metastasis, autophagy and apoptosis of liver cancer cells, hoping to provide a theoretical basis for the molecular targeted therapy of hepatocellular carcinoma.

          Release date:2020-08-25 10:08 Export PDF Favorites Scan
        • Study on the Relationship among Hepatitis B Virus PreS1, Human Hepatitis B e Antigen and Liver Fuction in Serum of Hepatitis B Patients

          ObjectiveTo evaluate the relationship between hepatitis B virus (HBV) preS1 antigen and the virus replication index human hepatitis B e antigen (HBeAg) and liver function. MethodsA total of 310 cases of serum samples from patients with chronic HBV treated in our hospital between May and July 2012 were examined and studied. HBV preS1 antigen was detected by ELISA; HBeAg was detected by the Architect i2000 system; and alanine transaminase (ALT) was detected by kinetic method. ResultsThe detection rate of HBV preS1 antigen was higher in HBeAg positive group. HBV preS1 antigen was correlated with HBeAg which was an index of virus replication. HBV preS1 antigen was correlated with ALT levels. ConclusionThe levels of HBV preS1 antigen may reflect the replication of HBV and the reactiveness condition of chronic hepatitis.

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        • Systematic Evaluation on Relationship Between Viral Hepatitis and Extrahepatic Cholangiocarcinoma

          ObjectiveTo explore the association between viral hepatitis and extrahepatic cholangiocarcinoma (ECC). MethodsDatabase of Medline, Embase, PubMed, CNKI, and Wanfang were searched for the articles which were related to the relationship between viral hepatitis and ECC. After the quality evaluation and the data extraction of the literatures, statistical software of RevMan 5.0 was used to perform Meta analysis. ResultsAccording to the inclusion criteria and exclusion criteria, 9 articles were enrolled, 8 articles of them were related to hepatitis B virus(HBV) and 6 articles of them were related to hepatitis C virus(HCV). Meta analysis results showed that the HBV infection may be the risk factor for ECC(OR=1.69, 95% CI:1.32-2.17, P<0.000 1). In the United States, HCV infection may be the risk factor for ECC(OR=5.53, 95% CI:2.21-13.82, P=0.000 3), but the relationship was not found in China(OR=0.82, 95% CI:0.44-1.52, P=0.520 0). ConclusionsThe present studies suggest that HBV infection may be a high risk factor for ECC. HCV in the United States can increase the incidence of ECC, but the situation can not be found in China.

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        • Combination Therapy with Lamivudine and HBIG versus Lamivudine Monotherapy in Prevention of Hepatitis B Virus Recurrence after Liver Transplantation: A Systematic Review

          Objective?To evaluate the effectiveness of combination therapy with lamivudine (LAM) and hepatitis B immunoglobulin (HBIG) versus LAM monotherapy in prevention of hepatitis B virus recurrence after liver transplantation. Methods?Databases including MEDLINE (Ovid), PubMed, EMbase, Cochrane Central Register of Controlled Trials (CENTRAL), CBM, VIP, and CNKI were searched up to Dec. 2008. Clinical trials including randomized controlled, non-randomized concurrent-control and case-control studies about combination therapy with HBIG and LAM versus LAM monotherapy in prevention of hepatitis B virus recurrence after liver transplantation were screened. Trial selection and data extraction were conducted by two reviewers independently. Meta-analysis was performed using RevMan 5.0.18 software. Results?Eleven non-randomized concurrent-control studies involving 1 421 patients (1 035 patients in combination therapy group, and 386 patients in LAM monotherapy group) were included. The results of meta-analyses showed: Compared with LAM monotherapy group, the risks of hepatitis B virus recurrence, YMDD mutation, and death associated with HBV recurrence were significantly reduced by 73% (RR=0.27, 95%CI 0.20 to 0.37, Plt;0.000 01), 72% (RR=0.28, 95%CI 0.15 to 0.53, P=0.000 01), and 79% (RR=0.21, 95%CI 0.09 to 0.49, P=0.000 3) respectively in combination therapy group after liver transplantation; overall survival rates of both recipients and grafts in combination therapy group were similar to LAM monotherapy group (RR=1.03, 95%CI 0.95 to 1.11, P=0.51; RR=1.04, 95%CI 0.97 to 1.12, P=0.26). Conclusion?Current evidence indicates that compared with LAM monotherapy, combination therapy with LAM and HBIG could reduce the risks of hepatitis B virus recurrence, YMDD mutation, and death associated with HBV recurrence after liver transplantation.

          Release date:2016-09-07 11:23 Export PDF Favorites Scan
        • Long-term dynamic change of liver elasticity in chronic hepatitis B virus infection

          ObjectiveAntiviral treatments could benefit chronic hepatitis B (CHB) patients with the regression or improvement of liver fibrosis. However, the degree of dynamic change of liver fibrosis for patients who had not received antiviral treatment remained to be studied. The current study aimed to observe the long-term variation of liver stiffness measurement (LSM), virological and biochemical response on patients without standard antiviral therapy.MethodsA total of 220 patients who were diagnosed with chronic HBV infection, who had not reached the standard of antiviral therapy, and completed a follow-up date of over 2 years in the First Affiliated Hospital of Xi’an Jiaotong University from 2012 to 2018 were retrospectively enrolled. According to the changes of LSM in baseline and follow-up period, the patients were divided into regression group, non-progressive group, and progressive group. The virological and biochemical characteristics of each group were analyzed.ResultsAmong the 220 patients, 153 patients (69.5%) had no progress in LSM degree. Alanine aminotransferase (ALT), HBV DNA, and HBsAg in a few patients increased or slightly decreased, while the vast majority remained in a relatively stable state. 89.5% (137/153) of the non-progressive patients were in grade F0. In addition, 58 patients showed spontaneous improvement with a decreasing rate of 0.460 kPa per year. Patients with ALT of 1-2 ULN had a statistically significant decrease in LSM improvement compared to patients with normal ALT. 82.8% of the LSM-improving patients showed baseline LSM of F1-F3. Only 9 patients showed LSM deterioration, however, which could not be explained by virus replication or necroinflammatory activity. ConclusionsFor patients unsatisfying standard antiviral therapy, most patients with baseline LSM of F0 grade fail to progress, and patients with baseline LSM of F1-F3 show a decrease during follow-up, LSM progression occurs in 4.1% of patients.

          Release date:2021-08-19 03:41 Export PDF Favorites Scan
        • CRISPR/Cas9 技術在乙型肝炎病毒基因組抑制中的應用

          目前世界范圍內約有 2.4 億慢性乙型肝炎病毒(hepatitis B virus,HBV)感染者,HBV 感染是世界性的重大公共衛生難題。隨著分子生物學工具的不斷發展,目前第 3 代基因定點編輯技術 CRISPR/Cas9 作為熱點已經廣泛地應用于多種病毒的研究與實驗性治療中。該文簡要回顧了 HBV 基因組的特點、基因編輯技術的發展及原理和 CRISPR/Cas9 在 HBV 基因組抑制中的研究現狀及局限性。相對于鋅指核糖核酸酶和轉錄激活因子樣效應物核酸酶其他兩種基因編輯技術,CRISPR/Cas9 技術極大地提高了基因編輯的能力。雖然目前仍屬于概念證明階段,但多數基礎研究均證實了 CRISPR/Cas9 技術在體內外對 HBV 基因組具有編輯能力并能降低其 DNA 復制與病毒蛋白的表達能力。在潛在安全風險及基因編輯載體的輸送效率等問題得到解決后,CRISPR/Cas9 技術聯合逆轉錄抑制藥物的治療將為 HBV 感染的臨床治愈帶來曙光。

          Release date:2017-12-25 06:02 Export PDF Favorites Scan
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