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Related Experiment Videos

Decrease in CD23+ B lymphocytes and clinical outcome in asthmatic patients receiving specific rush immunotherapy

M Kljaic-Turkalj1, B Cvoriscec, N Tudoric

  • 1Department of Pulmonary Diseases and Clinical Immunology, General Hospital, Sveti Duh, Zagreb, Croatia.

International Archives of Allergy and Immunology
|October 1, 1996
PubMed
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Rush immunotherapy (RIT) for allergic asthma increases allergen-specific IgE and IgG4 antibodies. It also decreases CD23+ B cells, suggesting a shift in immune response mechanisms.

Area of Science:

  • Immunology
  • Allergy and Asthma Research

Background:

  • Allergic bronchial asthma affects numerous patients globally.
  • Rush immunotherapy (RIT) is a recognized treatment for allergic asthma.
  • Understanding RIT's immunological mechanisms is crucial for optimizing therapy.

Purpose of the Study:

  • To investigate the immunological changes associated with RIT in patients with perennial bronchial asthma.
  • To analyze alterations in serum immunoglobulin E (IgE), allergen-specific IgE and IgG4, and B cell CD23 expression during RIT.

Main Methods:

  • Twenty patients with perennial bronchial asthma were enrolled.
  • Serum samples and peripheral blood B cells were analyzed before RIT, and at 6 weeks and 6 months post-initiation.
  • Measurements included total IgE, allergen-specific IgE and IgG4, and CD23 expression on B cells.

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Main Results:

  • A significant increase in Der-p-specific IgG4 and IgE levels was observed at 6 weeks and 6 months of RIT.
  • Total serum IgE levels remained unchanged throughout the study.
  • A significant decrease in the percentage and receptor density of CD23+ B cells was noted after 6 months of RIT.
  • Clinical improvement, including reduced symptom scores and medication needs, was observed, but no direct correlation with in vitro immunological changes was found.

Conclusions:

  • RIT induces significant increases in specific IgE and IgG4 antibodies against Der-p.
  • A decrease in CD23+ B cells suggests a modulation of B cell activation pathways.
  • These findings indicate a potential shift in the lymphokine profile, possibly involving the inhibition of IL-4-induced B cell stimulation as a key mechanism in RIT's efficacy.