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Circulating PD-1CXCR5CD4 T cells are associated with a decrease in hepatitis B surface antigen levels in patients with chronic hepatitis B who are receiving peginterferon-α therapy.

08:00 EDT 16th October 2018 | BioPortfolio

Summary of "Circulating PD-1CXCR5CD4 T cells are associated with a decrease in hepatitis B surface antigen levels in patients with chronic hepatitis B who are receiving peginterferon-α therapy."

Given the B helper function of follicular T helper (Tfh) cells and peripheral T helper (Tph) cells, we researched the roles of circulating PD-1CXCR5CD4 T cells and PD-1CXCR5CD4 T cells in the decrease in hepatitis B surface antigen (HBsAg) levels and hepatitis B virus (HBV) clearance in patients with chronic hepatitis B (CHB). In the present study, the frequencies of PD-1CXCR5CD4 T cells and PD-1CXCR5CD4 T cells measured by flow cytometry were significantly higher in patients with CHB than that in healthy controls (HCs). Our longitudinal study did not reveal significant differences in the frequencies of both cell populations before and after 48 weeks of peginterferon-α (PEG-IFN-α) therapy. However, repeated measurements of serum HBsAg levels revealed significantly lower HBsAg levels over time in patients who exhibited an increase in the frequency of PD-1CXCR5CD4 T cells after PEG-IFN-α treatment. In addition, the increase in the frequency of PD-1CXCR5CD4 T cells exerted a significant positive effect on the HBsAg level, which decreased to ≤2 Log IU/mL and ≤3 Log IU/mL at the end of treatment. However, no significant difference in HBsAg levels was observed over time, regardless of whether the frequency of circulating PD-1CXCR5CD4 T cells was elevated. Repeated measurements of the HBV DNA concentration did not show significant differences between patients exhibiting changes in the frequencies of these two cell subsets and HBV DNA clearance. Overall, circulating PD-1CXCR5CD4 T cells and PD-1CXCR5CD4 T cells may be involved in the immune landscape of patients with a chronic HBV infection. Moreover, PD-1CXCR5CD4 T cells are associated with decreased HBsAg levels in patients with CHB who are receiving peginterferon-α therapy.

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Journal Details

This article was published in the following journal.

Name: Molecular immunology
ISSN: 1872-9142
Pages: 270-278

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Medical and Biotech [MESH] Definitions

Antigens of the virion of the HEPATITIS B VIRUS or the Dane particle, its surface (HEPATITIS B SURFACE ANTIGENS), core (HEPATITIS B CORE ANTIGENS), and other associated antigens, including the HEPATITIS B E ANTIGENS.

INFLAMMATION of the LIVER in humans caused by HEPATITIS DELTA VIRUS, a defective RNA virus that can only infect HEPATITIS B patients. For its viral coating, hepatitis delta virus requires the HEPATITIS B SURFACE ANTIGENS produced by these patients. Hepatitis D can occur either concomitantly with (coinfection) or subsequent to (superinfection) hepatitis B infection. Similar to hepatitis B, it is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.

Those hepatitis B antigens found on the surface of the Dane particle and on the 20 nm spherical and tubular particles. Several subspecificities of the surface antigen are known. These were formerly called the Australia antigen.

INFLAMMATION of the LIVER in humans due to infection by VIRUSES. There are several significant types of human viral hepatitis with infection caused by enteric-transmission (HEPATITIS A; HEPATITIS E) or blood transfusion (HEPATITIS B; HEPATITIS C; and HEPATITIS D).

A family of hepatotropic DNA viruses which contains double-stranded DNA genomes and causes hepatitis in humans and animals. There are two genera: AVIHEPADNAVIRUS and ORTHOHEPADNAVIRUS. Hepadnaviruses include HEPATITIS B VIRUS, duck hepatitis B virus (HEPATITIS B VIRUS, DUCK), heron hepatitis B virus, ground squirrel hepatitis virus, and woodchuck hepatitis B virus (HEPATITIS B VIRUS, WOODCHUCK).

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