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Occupational asthma due to piperazine citrate
1Allergy Department, Fundación Jiménez Díaz, Madrid, Spain. sequirce@fjd.es
Summary
Occupational asthma caused by piperazine was confirmed in a chemical factory worker. A specific inhalation challenge test revealed a late asthmatic response, suggesting an immunological mechanism for piperazine-induced asthma.
Area of Science:
- Occupational medicine
- Immunology
- Toxicology
Background:
- Piperazine, a heterocyclic amine, is linked to occupational asthma with an unclear mechanism.
- Chemical industry workers are potentially exposed to piperazine compounds.
Observation:
- A 42-year-old female chemical factory worker presented with rhinitis and asthma symptoms related to piperazine citrate exposure.
- Symptoms improved when away from the work environment, indicating a work-related cause.
Findings:
- A positive skin prick test to piperazine citrate was observed.
- Specific inhalation challenge with piperazine citrate induced a late asthmatic response.
- Airway hyperresponsiveness to methacholine increased post-challenge, preceding the late asthmatic response.
Implications:
- This case confirms piperazine as an occupational asthma trigger.
- An immunological mechanism is suggested for piperazine-induced occupational asthma.
- Specific inhalation challenge testing is a valuable diagnostic tool for occupational asthma.
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