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Immunological correlates of disease severity in pediatric slow progressors with human immunodeficiency virus type 1
R Patarca1, D Sandler, K Maher
1E.M. Papper Laboratory of Clinical Immunology, Department of Medicine, University of Miami School of Medicine, Florida 33101, USA.
Insights
Pediatric HIV-1 infection shows declining CD4 T cells correlate with increased CD8 T cells and reduced IL-2, -5, and -10 production. These findings may offer prognostic markers and therapeutic targets for slow progressors.
Area of Science:
- Immunology
- Virology
- Pediatrics
Background:
- Pediatric slow progressors with HIV-1 infection offer a unique cohort for studying disease progression due to homogeneous infection characteristics.
- Understanding immunological correlates is crucial for managing pediatric HIV-1.
Purpose of the Study:
- To investigate the immunological markers associated with disease progression in pediatric HIV-1 slow progressors.
- To identify potential prognostic and therapeutic targets in this population.
Main Methods:
- Cross-sectional study analyzing clinical and immunological data from pediatric slow progressors based on 1994 CDC criteria.
- Assessed proportions of CD4, CD8, and CD4-CD8- T cells.
- Measured peripheral blood cell cytokine production (IL-2, -5, -10) in response to phytohemagglutinin and pokeweed mitogens.
Main Results:
- Clinical and immunological categorizations yielded similar findings.
- Declining CD4 T cell proportions were associated with increasing CD8 and CD4-CD8- T cells.
- Reduced production of IL-2, -5, and -10 was observed in response to phytohemagglutinin.
Conclusions:
- Immune cell proportions and cytokine production levels serve as potential prognostic markers for HIV-1 progression in children.
- These markers may also represent therapeutic targets for intervention in pediatric HIV-1.
- Further longitudinal studies are recommended to confirm these cross-sectional findings.
Abstract:
Pediatric slow progressors are a group of HIV-1-infected individuals who are homogeneous for route and length of infection and standard of care and are therefore amenable to cross-sectional population studies on the immunological correlates of disease progression. We report here that both clinical and immunological categorizations of pediatric slow progressors based on the 1994 CDC criteria for symptom and immunosupression severity levels yield similar immunological findings: declining proportions of CD4 T cells are associated with increasing proportions of CD8 and CD4-CD8- T cells and with declining IL-2, -5, and -10 production levels by peripheral blood cells in response to the T cell-dependent mitogen, phytohemagglutinin, but not to the T and B cell-dependent mitogen from pokeweed. The latter cross-sectional results point to potential prognostic and nosologic markers and therapeutic targets among HIV-infected pediatric slow progressors. Longitudinal studies will help to assess further the relevance of these findings.