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Rhinitis caused by ninhydrin develops into occupational asthma

P Piirilä1, T Estlander, M Hytönen

  • 1Finnish Institute of Occupational Health, Helsinki.

The European Respiratory Journal
|August 1, 1997
PubMed
Summary
This summary is machine-generated.

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Occupational allergic rhinitis caused by ninhydrin (2,2-dihydroxy-1,3-indanedione) can progress to asthma. Prompt cessation of allergen exposure is crucial for preventing occupational asthma in laboratory workers.

Area of Science:

  • Chemical detection reagents
  • Occupational immunology
  • Respiratory medicine

Background:

  • Ninhydrin is a chemical reagent used for detecting amino and carboxyl groups in proteins and peptides.
  • Occupational allergies can arise from exposure to chemicals in the workplace.
  • Allergic rhinitis is an IgE-mediated condition affecting the nasal passages.

Observation:

  • A 41-year-old female laboratory technician developed symptoms of dyspnea and allergic rhinitis.
  • Symptoms emerged six months after handling ninhydrin, even within a flow cabinet.
  • Peak expiratory flow varied by 20% on working days, indicating respiratory distress.

Findings:

  • The patient was diagnosed with immunoglobulin E (IgE)-mediated allergic rhinitis due to ninhydrin.

Related Experiment Videos

  • A specific inhalation challenge confirmed the development of occupational asthma from low-level ninhydrin exposure.
  • Ninhydrin-specific IgE levels increased from 0.6 to 1.1 kU/L during follow-up.

    • Implications:

    • This case highlights the risk of developing occupational asthma from allergic rhinitis.
    • Cessation of allergen exposure is critical for managing occupational allergic rhinitis and preventing asthma.
    • Forensic laboratories must implement stringent safety protocols when handling ninhydrin and similar reagents.