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Piperazine-induced occupational asthma

L Hagmar, T Bellander, B Bergöö

    Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association
    |March 1, 1982
    PubMed
    Summary
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    Occupational asthma linked to piperazine and ethylenediamine (EDA) was identified in factory workers. Exposure to these chemicals, particularly piperazine, induced late or dual asthmatic reactions, highlighting workplace chemical risks.

    Area of Science:

    • Occupational Medicine
    • Pulmonary Medicine
    • Toxicology

    Background:

    • Occupational asthma is a significant health concern in industries utilizing chemical agents.
    • Amines, such as piperazine and ethylenediamine (EDA), are known respiratory sensitizers.
    • Understanding the specific agents and reaction patterns is crucial for prevention and management.

    Purpose of the Study:

    • To investigate the prevalence and characteristics of occupational asthma among factory workers exposed to amines.
    • To identify the specific chemical agents responsible for inducing asthmatic reactions.
    • To characterize the type of asthmatic responses and bronchial reactivity.

    Main Methods:

    • Study population: 130 factory workers with occupational chemical exposure.

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  • Data collection: Medical history, occupational exposure assessment, spirometry.
  • Diagnostic tools: Bronchial provocation tests with specific chemicals (piperazine) and non-specific stimuli (methacholine).

    • Main Results:

    • 15 cases of occupational asthma among current employees and at least 18 among former employees.
    • Piperazine identified as the primary inducer in 29 cases, ethylenediamine (EDA) in three.
    • Asthma presented as late or dual asthmatic reactions; no immediate-only reactions observed.
    • Bronchial hyperreactivity to methacholine found in most recent asthma cases.
    • Positive bronchial provocation test to piperazine confirmed its role.

    Conclusions:

    • Piperazine and ethylenediamine (EDA) are significant causes of occupational asthma in this cohort.
    • The study highlights the importance of identifying specific chemical triggers for effective workplace health interventions.
    • Late or dual asthmatic reactions are characteristic of amine-induced occupational asthma, necessitating targeted diagnostic approaches.