Tracking CD4+ T Cells in Acute Hepatitis C Infection
Author Information
Author(s): Lucas Michaela, Ulsenheimer Axel, Pfafferot Katja, Heeg Malte H.J., Gaudieri Silvana, Grüner Norbert, Rauch Andri, Gerlach J. Tilman, Jung Maria-Christina, Zachoval Reinhart, Pape Gerd R., Schraut Winfried, Santantonio Teresa, Nitschko Hans, Obermeier Martin, Phillips Rodney, Scriba Thomas J., Semmo Nasser, Day Cheryl, Weber Jonathan N., Fidler Sarah, Thimme Robert, Haberstroh Anita, Baumert Thomas F., Klenerman Paul, Diepolder Helmut M.
Primary Institution: University of Oxford
Hypothesis
The study investigates the dynamics of CD4+ T cell responses in patients with acute hepatitis C and their correlation with disease outcomes.
Conclusion
The study found that CD4+ T cell responses are induced in most patients with acute hepatitis C, but these responses can become functionally impaired or lost in those who develop chronic infection.
Supporting Evidence
- All seven patients with acute hepatitis C had detectable CD4+ T cell responses.
- Tetramer+ CD4+ T cells were found at frequencies up to 0.65% of total CD4+ T cells.
- Patients who developed chronic infection showed a loss of CD4+ T cell function.
Takeaway
When people get sick with hepatitis C, their immune system makes special cells to fight the virus. Some people can get better, but others might not, and the fighting cells can stop working.
Methodology
The study tracked CD4+ T cells in seven patients with acute hepatitis C using a novel HLA-DR1 tetramer to measure their frequency and function over time.
Potential Biases
Potential bias due to the small and specific patient cohort.
Limitations
The study had a small sample size and focused only on HLA-DR1 positive patients.
Participant Demographics
Seven HLA-DR1 positive patients with acute hepatitis C, including both males and females.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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