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Th1 and Th2 cytokines in a patient with Evans' syndrome and profound lymphopenia

M Karakantza1, A Mouzaki, M Theodoropoulou

  • 1Laboratory of Haematology and Transfusion Medicine, Department of Medicine, School of Health Sciences, University of Patras, Patras, Greece. makara@med.upatras.gr

British Journal of Haematology
|October 29, 2000
PubMed

Insights

Splenectomy improved Evans' syndrome in a patient with IgM deficiency by increasing natural killer (NK) cells and transforming growth factor-beta (TGF-beta) levels, leading to clinical remission.

Area of Science:

  • Immunology
  • Hematology

Background:

  • Evans' syndrome is an autoimmune disorder characterized by hemolytic anemia and/or immune thrombocytopenia.
  • This case presents a unique combination of Evans' syndrome with IgM deficiency and lymphopenia, specifically a reduction in CD4 and CD8 cells.

Observation:

  • Cytokine profiles before splenectomy showed spontaneous Th1 and Th2 activity but complete suppression of transforming growth factor-beta (TGF-beta).
  • The patient experienced profound lymphopenia due to decreased CD4 and CD8 cell counts.

Findings:

  • Following splenectomy, the patient achieved clinical remission.
  • Post-splenectomy, there was an increase in natural killer (NK) cell numbers.
  • Cytokine production normalized, with increased interleukin (IL)-2, IL-4, IL-10, and TGF-beta, and abolished interferon-gamma (IFN-gamma) production.

Implications:

  • Splenectomy can be a beneficial therapeutic option for complex cases of Evans' syndrome, particularly those with lymphopenia and cytokine dysregulation.
  • The increase in NK cells and restoration of TGF-beta production appear to be key mechanisms underlying the therapeutic effect of splenectomy in this patient.
  • This case highlights the intricate relationship between spleen function, immune cell populations, and cytokine balance in autoimmune hematologic disorders.

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