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Related Experiment Videos

Bronchospasm induced by vanillin and lactose.

A H van Assendelft

    European Journal of Respiratory Diseases
    |August 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Vanillin and lactose can trigger bronchospasm in asthmatic patients. Cellulose is a better placebo than lactose for challenge tests in asthma research.

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    Area of Science:

    • Pharmacology
    • Allergy and Immunology
    • Respiratory Medicine

    Background:

    • Asthma management requires careful consideration of potential triggers.
    • Drug formulations often contain excipients like flavouring agents and lactose.
    • Identifying specific triggers is crucial for personalized asthma treatment.

    Observation:

    • A controlled double-blind challenge test was conducted on an asthmatic patient.
    • The patient exhibited bronchospasm during the challenge.
    • The reaction was specifically linked to vanillin and lactose exposure.

    Findings:

    • Vanillin, a common flavoring agent, was identified as a trigger for bronchospasm.
    • Lactose, frequently used as an excipient and placebo, also induced bronchospasm.

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  • The patient's asthmatic response was confirmed to be associated with these substances.

    • Implications:

    • Flavouring agents and dyes should be removed from drug formulations for asthmatic individuals.
    • Lactose is unsuitable as a placebo in challenge tests for asthmatic patients due to its potential to cause bronchospasm.
    • Cellulose, being non-resorbable, is recommended as a more appropriate placebo for challenge testing in this population.