T-cell Responses in Patients with Hepatitis B Surface Antigen Seroclearance
Author Information
Author(s): Liang Minfeng, Ma Shiwu, Hu Xiaoxiong, Zhou Bin, Zhang Junchang, Chen Jinjun, Wang Zhanhui, Sun Jian, Zhu Xiaolin, Abbott William, Hou Jinlin
Primary Institution: Nanfang Hospital, Southern Medical University
Hypothesis
Does the acquired immune response to the envelope protein contribute to HBsAg seroclearance?
Conclusion
The study found low frequencies of T cell immune responses to envelope antigens in patients with HBsAg seroclearance, suggesting these responses are not responsible for seroclearance.
Supporting Evidence
- Patients with HBsAg seroclearance showed a higher frequency of T-cell responses to core antigens than to envelope antigens.
- Only a small number of low-level responses to envelope gene antigens were detected in the HBsAg seroclearance group.
- The immune responses in patients with HBsAg seroclearance were mainly to the C peptide pool and the rHBcAg.
- Responses to C and S antigens in inactive carriers were similar, indicating no significant difference in immune response.
Takeaway
The study looked at how the immune system responds in patients who cleared hepatitis B after treatment, and found that the immune response to certain virus parts wasn't strong.
Methodology
The study measured T-cell responses using ELISPOT and intracellular cytokine staining assays in patients with HBsAg seroclearance and control groups.
Potential Biases
Potential bias due to the specific selection of patients and the exclusion of those with other infections or diseases.
Limitations
The study's conclusions may be limited by the specific genetic backgrounds of the subjects and the short duration of antigen loss.
Participant Demographics
The study included 30 patients: 14 with HBsAg seroclearance, 7 immunotolerant HBV carriers, and 9 inactive HBsAg carriers, with a median age of 38 years.
Statistical Information
P-Value
P < 0.001 for T-cell responses to core antigens compared to envelope antigens.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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