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[Relationship between serological diagnosis (ELISA) and severity of pulmonary tuberculosis in children]

C C Sant'Anna1, L S Fonseca, M H Fères Saad

  • 1Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Brasil. clemax@vetor.com.br

Revista Da Sociedade Brasileira De Medicina Tropical
|January 29, 2002
PubMed

Insights

This study found that enzyme-linked immunosorbent assay (ELISA) serological tests for anti-PPD IgG antibodies can help diagnose childhood pulmonary tuberculosis. Higher antibody levels correlated with more severe tuberculosis forms, aiding in assessing disease gravity.

Area of Science:

  • Pediatrics
  • Immunology
  • Infectious Diseases

Context:

  • Childhood pulmonary tuberculosis diagnosis presents challenges.
  • Assessing the relationship between immune response and disease severity is crucial.
  • Enzyme-linked immunosorbent assay (ELISA) is a common diagnostic tool.

Purpose:

  • To detect anti-PPD IgG antibodies using ELISA in children (0-13 years).
  • To diagnose pulmonary tuberculosis in pediatric patients.
  • To correlate immune response levels with radiological severity (mild, moderate, severe) of pulmonary tuberculosis.

Summary:

  • Forty-eight children (0-13 years) were tested for anti-PPD IgG antibodies via ELISA.
  • Twenty-nine children had pulmonary tuberculosis; 19 did not.
  • Median ELISA optical density was higher in severe tuberculosis (miliary pattern, 0.134) compared to mild (primary complex, 0.098) and moderate (pneumonic pattern, 0.092) forms (p=0.0007).

Impact:

  • ELISA serological testing shows potential for diagnosing childhood pulmonary tuberculosis.
  • The study establishes a correlation between higher anti-PPD IgG antibody levels and severe forms of pediatric tuberculosis.
  • Findings may aid in better assessing disease severity and guiding treatment strategies in children.

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