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Related Experiment Videos

Immunological changes during cockroach immunotherapy.

A Alonso1, J F Albónico, K Mouchián

  • 1Centro de Alergia, Hospital de Clínicas, Buenos Aires, Argentina.

Journal of Investigational Allergology & Clinical Immunology
|December 3, 1999
PubMed
Summary
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Specific immunotherapy (SIT) using Periplaneta americana antigen (Pa-1) over three years increased IgG levels and improved allergy symptoms. Cytokine levels (IL-2, IL-4, IL-4R) decreased after three years of SIT.

Area of Science:

  • Immunology
  • Allergology

Background:

  • Specific immunotherapy (SIT) is a treatment for allergic diseases.
  • Periplaneta americana antigen (Pa-1) is used in SIT for cockroach allergies.

Purpose of the Study:

  • To evaluate the effects of a 3-year SIT course with Pa-1 antigen.
  • To assess changes in immunological markers and clinical symptoms.

Main Methods:

  • Longitudinal study tracking patients undergoing SIT for 3 years.
  • Measurement of serum IgE, specific IgE and IgG, IL-2, IL-4, and IL-4R levels.
  • Assessment of symptomatic scores for allergic reactions.

Main Results:

  • Serum IgE and IgE-RAST-anti-Pa-1 levels remained unchanged.
  • A significant increase in IgG-RAST-anti-Pa-1 was observed from the first year.

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  • Serum IL-2, IL-4, and IL-4R levels decreased after 3 years of SIT.
  • Significant improvement in sneezing, nose blowing, and nasal obstruction symptoms was noted at year three.

    • Conclusions:

    • Three years of SIT with Pa-1 antigen effectively increases specific IgG antibodies.
    • SIT leads to a reduction in pro-inflammatory cytokines and significant symptom improvement.
    • This immunotherapy demonstrates a favorable immunomodulatory effect in allergic patients.