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Expression levels of P-glycoprotein in peripheral blood CD8+ T lymphocytes from HIV-1-infected patients on antiretroviral therapy
- Source :
- International journal of molecular medicine. 33(2)
- Publication Year :
- 2013
-
Abstract
- In this study, we aimed to measure P-glycoprotein (P-gp) expression in CD8(+) T lymphocytes of HIV-1-infected patients, to investigate how P-gp levels are affected by antiretroviral therapy (ART) in HIV-1 infection, and to assess the value of using P-gp expression to predict virologic response to ART. Peripheral blood mononuclear cells (PBMCs) were obtained from a cohort of HIV-1‑infected patients in China: 140 patients on ART, and 49 ART-naive patients. We also enrolled 24 healthy blood donors as the controls. The expression levels of P-gp in CD8(+) T cells of HIV-1-infected patients were evaluated by quantitative reverse transcription PCR, ELISA and flow cytometry. A high inter-individual variability was observed in the CD8(+) T cells of both HIV-1-infected patients and healthy donors; however, the expression levels of P-gp were significantly higher in the HIV-1-infected group on ART compared to the ART-naive group. The relative proportion of P-gp(+)CD8(+) T cells inversely correlated with the blood CD4(+) T cell count in the HIV-1‑infected patients on ART (r=-0.3343, P=0.0375). Groups of both good and poor responders showed significantly elevated levels of P-gp(+)CD8(+) T cells. The percentage of P-gp(+)CD8(+) T cells appeared to provide a sensitive estimate of the virologic response to ART compared to the CD4(+) T cell count. Our results suggest that P-gp expression varies among HIV-1‑infected patients, but is significantly higher in HIV-1‑infected patients on ART. The overexpression of P-gp is involved in ART initiation during HIV-1 infection, and P-gp(+)CD8(+) T cells may be an additional criterion for the evaluation of the antiretroviral response to ART.
- Subjects :
- Adult
Male
China
T cell
HIV Infections
CD8-Positive T-Lymphocytes
Peripheral blood mononuclear cell
Flow cytometry
Young Adult
Antiretroviral Therapy, Highly Active
Genetics
medicine
Humans
ATP Binding Cassette Transporter, Subfamily B, Member 1
medicine.diagnostic_test
business.industry
Case-control study
General Medicine
Middle Aged
Viral Load
Molecular medicine
medicine.anatomical_structure
Apoptosis
Case-Control Studies
Immunology
HIV-1
Leukocytes, Mononuclear
Female
business
Viral load
CD8
Subjects
Details
- ISSN :
- 1791244X
- Volume :
- 33
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- International journal of molecular medicine
- Accession number :
- edsair.doi.dedup.....7ba448ec9898d1704ed5434b9eaab89c