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Serum histamine level in exercise-induced bronchospasm

L Nagy, J Leibinger, L Molnár

    Allergologia Et Immunopathologia
    |November 1, 1980
    PubMed
    Summary
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    Histamine levels increase in asthmatic patients experiencing exercise-induced bronchospasm. This study highlights histamine's role in the condition, even when airway conductance changes are not parallel.

    Area of Science:

    • Pulmonology
    • Allergy and Immunology
    • Biochemistry

    Background:

    • Exercise-induced bronchospasm (EIB) is a common condition in asthma patients.
    • The precise role of histamine in EIB pathophysiology requires further elucidation.

    Purpose of the Study:

    • To investigate the changes in serum histamine levels in asthmatic patients undergoing physical exercise.
    • To correlate histamine levels with specific airway conductance changes during exercise challenges.

    Main Methods:

    • Serum histamine levels were measured fluorometrically in 12 asthmatic patients.
    • Patients were categorized into positive and negative responders to a physical exercise challenge.
    • Specific airway conductance was assessed as a spirometric criterion.

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    Main Results:

    • Serum histamine levels significantly elevated in patients with positive responses to exercise.
    • No significant alteration in serum histamine levels was observed in negative responders.
    • Changes in specific airway conductance and serum histamine levels did not consistently parallel each other.

    Conclusions:

    • Histamine plays a significant role in the pathophysiology of exercise-induced bronchospasm.
    • Other immediate hypersensitivity mediators may also contribute to EIB, as indicated by non-parallel changes in histamine and airway conductance.