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Related Experiment Videos

T-cell subsets in asthmatic children

I Barić1, Z Reiner-Banovac, E Verona

  • 1Department of Pediatrics, Sestre milosrdnice University Hospital, Zagreb, Croatia.

Acta Medica Croatica : Casopis Hravatske Akademije Medicinskih Znanosti
|January 1, 1993
PubMed
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Children with reaginic asthma show a lower percentage of CD8+ lymphocytes, a finding linked to elevated IgE levels and potentially contributing to asthma development. This suggests a role for these immune cells in the disease

Area of Science:

  • Immunology
  • Pediatric Allergy

Background:

  • Asthma pathogenesis involves complex immune dysregulation.
  • Lymphocyte subsets play critical roles in immune responses.

Purpose of the Study:

  • To investigate lymphocyte subset percentages (CD2+, CD4+, CD8+) in children with asthma.
  • To correlate these percentages with serum IgE levels and disease duration.
  • To identify potential immune abnormalities contributing to reaginic asthma.

Main Methods:

  • Monoclonal antibody-based flow cytometry was used to quantify lymphocyte subsets in peripheral blood.
  • 45 asthmatic children (38 reaginic, 7 non-reaginic) and healthy controls were studied.
  • Correlation analysis was performed between lymphocyte percentages, serum IgE, and illness duration.

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Main Results:

  • CD2+ and CD4+ lymphocyte percentages did not differ significantly between asthmatic groups and healthy children.
  • CD8+ lymphocyte percentages were significantly lower in asthmatic children, especially those with reaginic asthma (P < 0.01).
  • A significant negative correlation was observed between CD8+ cell percentage and serum IgE levels in asthmatics (P < 0.05).

Conclusions:

  • A reduced percentage of CD8+ lymphocytes (suppressor cells) may contribute to IgE overproduction in reaginic asthma.
  • Lower CD8+ lymphocyte levels are implicated as a significant factor in the pathogenesis of childhood reaginic asthma.
  • Immune dysregulation involving CD8+ T-cells is a key area for further research in pediatric asthma.