HIV-Specific T-Cells in the Liver of HCV/HIV Co-Infected Individuals
Author Information
Author(s): Vali Bahareh, Yue Feng Yun, Jones R. Brad, Sheth Prameet M., Kaul Rupert, Betts Michael R., Wong David, Kovacs Colin, Loutfy Mona, Common Andrew, Halpenny Roberta, Ostrowski Mario A.
Primary Institution: University of Toronto
Hypothesis
Do HIV-specific T-cells accumulate in the liver of HCV/HIV co-infected individuals and contribute to liver inflammation?
Conclusion
HIV-specific T-cells accumulate in the liver during HCV/HIV co-infection and may contribute to faster progression of liver disease.
Supporting Evidence
- HIV co-infection is associated with higher HCV viremia and more rapid progression to cirrhosis.
- HAART did not restore intra-hepatic CD4+ T-cells in co-infected individuals.
- Therapy-naive co-infected individuals had higher frequencies of intra-hepatic CD8+ T-cells producing TNF-α.
Takeaway
People who have both HIV and hepatitis C might have more problems with their liver because the HIV cells can make the liver get sick faster.
Methodology
Ex-vivo intra-hepatic lymphocytes from HCV mono-infected and HCV/HIV co-infected individuals were assessed for immune responses to HIV and HCV antigens by polychromatic flow cytometry.
Potential Biases
Potential bias due to the small sample size and the specific population studied.
Limitations
The study is limited by its cross-sectional nature, low number of analyzed liver biopsies, and narrow range of CD4+ T-cell counts among participants.
Participant Demographics
Participants included 6 HCV mono-infected individuals and 20 HCV/HIV co-infected individuals (8 not on HAART, 12 on HAART).
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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