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Related Experiment Videos

Cellular immunity in chronic Chagas' disease.

O M Montufar, C C Musatti, E Mendes

    Journal of Clinical Microbiology
    |April 1, 1977
    PubMed
    Summary

    This study found that cellular immunity is well-preserved in patients with chronic Chagas' disease (American trypanosomiasis). Chronic Chagas' disease does not appear to cause or be associated with a deficiency in cellular immunity.

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    Area of Science:

    • Immunology
    • Infectious Diseases
    • Parasitology

    Background:

    • Chagas' disease, caused by Trypanosoma cruzi, is a chronic parasitic infection.
    • The role of cellular immunity in the pathogenesis of chronic Chagas' disease remains incompletely understood.

    Purpose of the Study:

    • To assess the cellular immune response in patients with chronic Chagas' disease.
    • To determine if chronic Chagas' disease is associated with cellular immune deficiency.

    Main Methods:

    • In vivo assessment of cutaneous reactivity to antigens (Trypanosoma cruzi, 2,4-dinitrochlorobenzene).
    • In vitro T-cell reactivity evaluation (phytohemagglutinin and T. cruzi antigen proliferation, leukocyte migration inhibition).
    • Quantification of peripheral blood T and B-lymphocytes using rosette formation.

    Main Results:

    • Cellular immune responses, both general and specific, were found to be well-preserved in patients.
    • No evidence of cellular immune deficiency was observed in individuals with chronic Chagas' disease.

    Conclusions:

    • Chronic Chagas' disease is not associated with a deficiency in cellular immunity.
    • Delayed hypersensitivity may play a significant role in the manifestation of human chagasic lesions.

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