IgE levels in pediatric HIV-1 infection

Area of Science:

• Pediatric Immunology
• Infectious Diseases
• Allergy and Immunology

Background:

• Atopic symptoms like sinusitis, eczema, and wheezing are prevalent in children with human immunodeficiency virus (HIV) infection.
• Understanding the immune response in HIV-infected children is crucial for managing their health outcomes.

Purpose of the Study:

• To investigate elevated immunoglobulin E (IgE) levels in HIV-seropositive children.
• To determine the relationship between IgE levels, HIV disease stage, and the presence of atopic symptoms.

Main Methods:

• Serum IgE levels were measured alongside HIV disease parameters (CD4/CD8 counts, neopterin, beta 2 microglobulin, HIV P24 antigen).
• Clinical data including disease stage, opportunistic infections, and atopic symptoms were systematically recorded.
• Statistical analysis explored correlations between IgE, HIV markers, and clinical findings.

Main Results:

• Elevated IgE levels were observed in children under one year old, persisting until age six, then normalizing by ages seven to nine.
• Increased IgE strongly correlated with disseminated or systemic HIV-related diseases (e.g., pulmonary lymphoid hyperplasia, P. carinii pneumonia, CMV).
• No significant correlation was found between IgE and CD4 counts; a weak positive correlation existed only with serum P24 antigen levels. Atopic symptoms were present in a subset of children, but IgE levels were not significantly elevated in these cases.

Conclusions:

• Serum IgE is elevated early in HIV-infected children, increasing with the progression of systemic HIV-associated disease.
• Elevated IgE levels in HIV-infected children are not associated with the presence of atopic symptoms.