Results 11 to 20 of about 40,026,108 (306)

Hepatitis B Virus e Antigen Variants [PDF]

open access: yesInternational Journal of Medical Sciences, 2005
More than 300 million people worldwide are chronically infected with hepatitis B virus (HBV). Considering the very short generation time for a virus, and the high error rate associated with the reverse transcription step of HBV replication, decades of HBV infection are probably equivalent to million years of human evolution.
Shuping, Tong   +4 more
openaire   +2 more sources

Non-responsiveness to hepatitis-B vaccination: revaccination and immunogenetic typing [PDF]

open access: yes, 1988
Krämer A, Herth D, von Keyserlingk H, et al. Non-responsiveness to hepatitis-B vaccination: revaccination and immunogenetic typing. Klinische Wochenschrift.
Sommer, D.   +7 more
core   +1 more source

Serum hepatitis B virus RNA levels as a predictor of HBeAg seroconversion during treatment with peginterferon alfa-2a

open access: yesVirology Journal, 2019
Background Hepatitis B e antigen (HBeAg) seroconversion represents an endpoint of treatment of chronic hepatitis B virus (HBV) infections. Methods We have studied whether levels of serum hepatitis B virus ribonucleic acid (HBV RNA) during pegylated ...
Wen Jia   +8 more
doaj   +1 more source

Escaping high viral load exhaustion: CD8 cells with altered tetramer binding in chronic hepatitis B virus infection [PDF]

open access: yes, 2002
Deletion, anergy, and a spectrum of functional impairments can affect virus-specific CD8 cells in chronic viral infections. Here we characterize a low frequency population of CD8 cells present in chronic hepatitis B virus (HBV) infection which survive in
Ogg, GS   +29 more
core   +1 more source

Are serum quantitative hepatitis b surface antigen levels, liver histopathology and viral loads related in chronic hepatitis b-infected patients?

open access: yesThe Saudi Journal of Gastroenterology, 2016
Background/Aims: Fluctuations in hepatitis B virus (HBV) DNA and alanine transaminase (ALT) levels complicate assessment of the phases of chronic hepatitis B (CHB) infection and correct identification of the inactive HBV carrier state.
Ayhan Balkan   +5 more
doaj   +1 more source

Chemiluminescent Optical Fiber Immunosensor Combining Surface Modification and Signal Amplification for Ultrasensitive Determination of Hepatitis B Antigen

open access: yesSensors, 2020
Optical fiber based immunosensors are very attractive for biomarker detection. In order to improve the sensor response, we propose a promising strategy which combines porous-layer modification of the fiber surface and streptavidin-biotin-peroxidase nano ...
Xuexue Xu   +3 more
doaj   +1 more source

Modulation of the CD8+-T-cell response by CD4+ CD25+ regulatory T cells in patients with Hepatitis B virus infection [PDF]

open access: yes, 2005
CD4+ CD25+ regulatory T cells have been shown to maintain peripheral tolerance against self and foreign antigens. In this study we analyzed the effect of circulating CD4+ CD25+ T cells on CD8+-T-cell responses of patients with chronic and resolved ...
Gotto, J   +19 more
core   +1 more source

Hepatitis B functional cure and immune response

open access: yesFrontiers in Immunology, 2022
Hepatitis B virus (HBV) is a hepatotropic virus, which damage to hepatocytes is not direct, but through the immune system. HBV specific CD4+ T cells can induce HBV specific B cells and CD8+ T cells.
Jia-Rui Zheng, Zi-Long Wang, Bo Feng
doaj   +1 more source

Seroprevalence of viral hepatitis in riverine communities from the Western Region of the Brazilian Amazon Basin

open access: yesMemorias do Instituto Oswaldo Cruz, 2001
The western region of the Brazilian Amazon Basin has long been shown to be a highly endemic area for hepatitis B and hepatitis D viruses. Data concerning the prevalence of hepatitis C and E viruses in this region are still scarce.
VS de Paula   +3 more
doaj   +1 more source

Monoclonal Antibodies Specific for Hepatitis B e Antigen and Hepatitis B Core Antigen

open access: yesHybridoma, 2011
Despite effective vaccination programs in many countries, HBV infection is still a serious health problem throughout the world; more than 2 billion people have been infected with Hepatitis B virus (HBV). The serologic markers are crucial indicators in clinical diagnosis of HBV infection. The persistent presence of anti-HBc is associated with chronicity,
Sogut, Ibrahim   +3 more
openaire   +4 more sources

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