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Theophylline: short term treatment.

G Schultze-Werninghaus, J Meier-Sydow

    Allergologia Et Immunopathologia
    |January 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Theophylline offers limited bronchodilation but effectively protects against allergic and exercise stimuli at lower doses. It also enhances ventilation and respiratory muscle contractility, contributing to its clinical benefits.

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    Area of Science:

    • Pharmacology
    • Respiratory Medicine
    • Allergy and Immunology

    Background:

    • Theophylline is a medication used for respiratory conditions.
    • Understanding its short-term effects is crucial for clinical application.
    • Comparison with other bronchodilators like beta-2 adrenergic drugs is relevant.

    Purpose of the Study:

    • To review and compile studies on the short-term effects of theophylline.
    • To evaluate theophylline's bronchodilator capacity and protective mechanisms.
    • To assess its impact on ventilation and respiratory muscle function.

    Main Methods:

    • Compilation of results from single and short-term (up to 4 days) therapeutic administration studies.
    • Analysis of theophylline serum levels in relation to observed effects.

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  • Inclusion of in vitro data on cellular mechanisms.

    • Main Results:

    • Theophylline demonstrates limited to moderate bronchodilation, comparable to beta-2 adrenergic drugs only at high doses with significant side effect risks.
    • It provides protection against allergic and exercise-induced stimuli at lower serum levels (3-4 mg/l) in a dose-dependent manner.
    • Theophylline increases alveolar ventilation and respiratory muscle contractility, potentially inhibiting diaphragmatic fatigue.

    Conclusions:

    • Theophylline acts through multiple mechanisms including bronchodilation, protection against stimuli, and enhancement of ventilation and muscle contractility.
    • These combined effects contribute to its clinical utility.
    • While less potent as a bronchodilator than some alternatives, its multifaceted actions support its use.