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Lymphocytes in peripheral blood and thyroid tissue in children with Graves' disease

Ben-Skowronek Iwona1, Sierocinska-Sawa Jadwiga, Korobowicz Elzbieta

  • 1Department of Pediatric Endocrinology and Neurology, Medical University of Lublin, Lublin, Poland. skowroneki@interia.pl

World Journal of Pediatrics : WJP
|December 24, 2008
PubMed

Insights

Graves' disease in children involves immune system imbalances, with more T helper cells and B cells, and fewer T suppressor cells in blood. Thyroid tissue shows increased lymphocytes and antigen-presenting cells in affected children.

Area of Science:

  • Pediatric Endocrinology
  • Immunology
  • Autoimmune Diseases

Background:

  • Graves' disease (GD) is a common autoimmune disorder in children.
  • Understanding immune cell subsets in early and late disease phases is crucial.

Purpose of the Study:

  • To analyze lymphocyte subsets in peripheral blood (early phase) and thyroid tissue (late phase) in pediatric Graves' disease.
  • To compare immune cell profiles between children with GD and healthy controls.

Main Methods:

  • Inclusion of 30 children with GD and 30 healthy controls.
  • Flow cytometry analysis of peripheral blood lymphocyte subsets using monoclonal antibodies.
  • Detection of T cells (CD3, CD4, CD8), B cells (CD79α), and antigen-presenting cells (APCs, CD1α) in thyroid tissue post-thyroidectomy.

Main Results:

  • Children with GD showed increased CD4+ T helper cells and B cells, with decreased CD8+ T suppressor/cytotoxic cells in peripheral blood before treatment.
  • Thyroid tissue in GD children had increased lymphocytes (CD4+, CD8+, CD79α+) and dendritic cells compared to controls.
  • Thyroid tissue exhibited a lower percentage of T cells and a higher percentage of B cells than peripheral blood.

Conclusions:

  • The primary immunoregulation defect in pediatric GD likely involves overactive T helper cells and underactive T suppressor cells.
  • Lymphocyte counts decreased with methimazole treatment duration.
  • Thyroid cells (thyrocytes) may possess antigen-presenting capabilities.
Abstract

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