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IL-21 level in Chinese HIV infected individuals and its dynamics undergoing HAART
Liwen Zheng1, Mamadou Diallo, Xia Chen
1Eight-Year Program Medical Student of Xiangya School of Medcine, Central South University, Changsha 410078,China.
Insights
Interleukin-21 (IL-21) levels rose in Chinese HIV patients on HAART but remained below healthy levels. This cytokine correlated with CD4 cell increases, suggesting a role in immune recovery during HIV treatment.
Area of Science:
- Immunology
- Virology
- Infectious Diseases
Background:
- Human Immunodeficiency Virus (HIV) infection is a global health challenge.
- Highly Active Antiretroviral Therapy (HAART) is the standard treatment for HIV.
- The role of specific cytokines, like IL-21, in HIV pathogenesis and treatment response requires further elucidation.
Purpose of the Study:
- To examine the dynamic changes of Interleukin-21 (IL-21) in Chinese patients with HIV.
- To assess the relationship between IL-21 levels and immunological markers (CD4, CD8) during HAART.
- To investigate the potential role of IL-21 in immune reconstitution in HIV-infected individuals.
Main Methods:
- Longitudinal study of 25 adult Chinese HIV patients on HAART for 1 year.
- Blood samples collected at baseline, 6 months, and 12 months.
- Quantification of CD4/CD8 cell counts (flow cytometry), HIV RNA (real-time PCR), and IL-21 (ELISA).
Main Results:
- IL-21 levels showed a gradual increase throughout the 1-year follow-up, though not reaching healthy levels.
- A significant positive correlation was observed between IL-21 levels and CD4 cell counts.
- No significant correlation was found between IL-21 and CD8 cell counts, or between HIV RNA and CD8 cells.
Conclusions:
- IL-21 may play a role in the immunopathogenesis of HIV infection.
- IL-21 could be a significant factor in immune system recovery (immune construction) during HAART.
- Further research is warranted to fully understand IL-21's therapeutic potential in HIV management.
Objective:
To investigate the dynamics of interleukin-21(IL-21) cytokine in the Chinese HIV patients undergoing highly active antiretroviral therapy (HAAPT).
Methods:
A total of 25 adults with chronic HIV infections, responding to combined highly active antiretroviral therapy (HAART) guideline criteria were enrolled for a 1-year follow-up. After signing an informed consent, 20 mL blood was collected from each patient at the base line, 6 month and 12 month, respectively. CD4 and CD8 cell count was quantified by flux cytometry, serum HIV RNA quantified by real time PCR and IL-21 concentrations by ELISA.
Results:
IL-21 levels increased gradually during the follow-up but did not reach the healthy levels. IL-21 correlated positively with the CD4 cells but not with CD8 T cells. HIV RNA correlated negatively with CD4 cell count but did not show any relationship with the CD8 cells.
Conclusion:
IL-21 has potential role in the immunopathogenesis of HIV, and might be an important factor in immune construction during HAART.
