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Hepatitis B Core Antibody Level: A Surrogate Marker for Host Antiviral Immunity in Chronic Hepatitis B Virus Infections

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VIRUSES-BASEL
卷 15, 期 5, 页码 -

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MDPI
DOI: 10.3390/v15051111

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hepatitis B virus; qAnti-HBc; antiviral immunity; treatment response

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The HBcAg is a highly immunogenic antigen and the anti-HBc is traditionally considered as a serological marker of HBV infections. However, recent studies have shown the predictive value of quantitative anti-HBc level in the treatment response and clinical outcome of chronic HBV infections. This review summarizes the clinical values of qAnti-HBc in differentiating CHB phases, predicting treatment response, and providing disease prognosis.
The hepatitis B virus core protein (HBcAg) is a highly immunogenic particulate antigen. Nearly all patients with persistent or resolved hepatitis B virus (HBV) infection show seropositivity for hepatitis B core antibody (anti-HBc), which appears in the early stage of infection and is mostly present for life. Traditionally, the anti-HBc is regarded as an evidential serological marker of HBV infections. In the last ten years, several studies revealed the predictive value of quantitative anti-HBc (qAnti-HBc) level in the treatment response and clinical outcome of chronic HBV infections, implying new insights into this classic marker. Overall, qAnti-HBc should be regarded as an indicator of the host's immune response specific to HBV, which correlates with HBV-related hepatitis activity and liver pathology. This review summarized the latest understanding of the clinical values of qAnti-HBc for differentiating the CHB phase, predicting treatment response, and providing disease prognosis. Moreover, we also discussed the possible mechanism of qAnti-HBc regulation during different courses of HBV infection.

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