نتایج جستجو برای: hbv

تعداد نتایج: 13835  

2018
Isabel Inês M de Pina-Araujo Natalia Spitz Caroline C Soares Christian Niel Barbara V Lago Selma A Gomes

Hepatitis B virus (HBV) diversity has not been previously studied in Cape Verde. The archipelago was discovered in 1460 by Portuguese explorers, who brought African slaves to colonise the islands. In this study, we investigated the HBV characteristics from 183 HBsAg-positive Cape Verdean individuals. Phylogenetic analysis of the pre-S/S region and the full-length genomes revealed 54 isolates wi...

Journal: :Global journal of clinical virology 2021

Hepatitis B Virus (HBV) infection is a major health problem in the developing countries counting Pakistan. This study aimed to examine causes and molecular prevalence of HBV district Bannu Khyber Pakhtunkhwa province,

Background: Hepatitis B surface antigen (HBsAg) is one of the main proteins of HBV envelop and its serum quantitative measurement is the most common quantitative test for monitoring the progress of Chronic Hepatitis B. Although measurement of serum HBV DNA copy number is a gold standard method for displaying viral load, the test is relatively expensive and it is not readily available everywhere...

Journal: :Austin journal of gastroenterology 2021

Aims: Healthy gut microbiome plays a crucial role in the treatment of Hepatitis B Virus (HBV) infection and chronic liver disease. Based on existing studies, we aimed to explore difference efficacy Fecal Microbiota Transplantation (FMT) patients with different stages HBV-related Methods: In this study, 10 HBV HBeAg-negative infection, 8 Chronic (CHB) hepatitis cirrhosis Child-Pugh score A, 9 B/...

2017
Hao Li Chunyu Sheng Shan Wang Lang Yang Yuan Liang Yong Huang Hongbo Liu Peng Li Chaojie Yang Xiaoxia Yang Leili Jia Jing Xie Ligui Wang Rongzhang Hao Xinying Du Dongping Xu Jianjun Zhou Mingzhen Li Yansong Sun Yigang Tong Qiao Li Shaofu Qiu Hongbin Song

The presence of hepatitis B virus (HBV) covalently closed circular DNA (cccDNA) and the permanent integration of HBV DNA into the host genome confers the risk of viral reactivation and hepatocellular carcinoma. Nucleoside/nucleotide analogs alone have little or no capacity to eliminate replicative HBV templates consisting of cccDNA or integrated HBV DNA. Recently, CRISPR/Cas9 technology has bee...

2016
Chean Ring Leong Kenji Funami Hiroyuki Oshiumi Deng Mengao Hiromi Takaki Misako Matsumoto Hussein H. Aly Koichi Watashi Kazuaki Chayama Tsukasa Seya

Hepatitis B virus (HBV) barely induces host interferon (IFN)-stimulated genes (ISGs), which allows efficient HBV replication in the immortalized mouse hepatocytes as per human hepatocytes. Here we found that transfection of Isg20 plasmid robustly inhibits the HBV replication in HBV-infected hepatocytes irrespective of IRF3 or IFN promoter activation. Transfection of Isg20 is thus effective to e...

2017
Jie Wang Ran Chen Ruiyang Zhang Shanlong Ding Tianying Zhang Quan Yuan Guiwen Guan Xiangmei Chen Ting Zhang Hui Zhuang Frederick Nunes Timothy Block Shuang Liu Zhongping Duan Ningshao Xia Zhongwei Xu Fengmin Lu

The CRISPR/Cas9 system is a novel genome editing technology which has been successfully used to inhibit HBV replication. Here, we described a novel gRNA-microRNA (miRNA)-gRNA ternary cassette driven by a single U6 promoter. With an anti-HBV pri-miR31 mimic integrated between two HBV-specific gRNAs, both gRNAs could be separated from the long transcript of gRNA-miR-HBV-gRNA ternary cassette thro...

2015
Florian Bihl Gladys Martinetti Gilles Wandeler Rainer Weber Bruno Ledergeber Alexandra Calmy Manuel Battegay Matthias Cavassini Pietro Vernazza Anna-Paola Caminada Martin Rickenbach Enos Bernasconi

BACKGROUND Hepatitis B virus (HBV) genotypes can influence treatment outcome in HBV-monoinfected and human immunodeficiency virus (HIV)/HBV-coinfected patients. Tenofovir disoproxil fumarate (TDF) plays a pivotal role in antiretroviral therapy (ART) of HIV/HBV-coinfected patients. The influence of HBV genotypes on the response to antiviral drugs, particularly TDF, is poorly understood. METHOD...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2008
Perumal Vivekanandan Rajesh Kannangai Stuart C Ray David L Thomas Michael Torbenson

BACKGROUND Occult infection with hepatitis B virus (HBV) is a type of chronic HBV infection that is characterized by the absence of a detectable hepatitis B surface antigen in the blood and by very low levels of HBV DNA in the blood and liver. The mechanisms leading to occult HBV infection remain poorly understood but include possible genetic mutations and deletions. Recently, it has been shown...

Journal: :Journal of virology 2012
Yongjun Tian Cheng-fu Kuo Wen-ling Chen Jing-hsiung James Ou

Hepatitis B virus (HBV) is an important pathogen that chronically infects more men than women. To understand the molecular mechanism of this gender disparity, we analyzed HBV replication in transgenic mice that carried the HBV genome with or without the ability to express the HBV X protein (HBx). We found that gender had no effect on HBV surface antigen (HBsAg), DNA, and RNA levels in mice befo...

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