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Occupational asthma caused by high-molecular-weight substances
Laurianne G Wild1, Manuel Lopez
1Section of Clinical Immunology, Allergy, and Rheumatology, Department of Medicine, Tulane University Health Sciences Center, 1700 Perdido Street (SL-57), New Orleans, LA 70112, USA.
Immunology and Allergy Clinics of North America
|June 14, 2003
Summary
Occupational asthma, affecting 2% to 15% of cases, is triggered by workplace agents like proteins and enzymes. High-molecular-weight substances are common culprits, with incidence varying by exposure and industry factors.
Area of Science:
- Occupational medicine
- Immunology
- Pulmonology
Background:
- Over 250 workplace agents can trigger asthma in susceptible individuals.
- Occupational asthma accounts for an estimated 2% to 15% of all asthma cases.
- High-molecular-weight substances (proteins, enzymes, carbohydrates) are primary inducers of IgE-mediated occupational asthma.
Purpose of the Study:
- To review risk factors for occupational asthma.
- To identify common high-molecular-weight workplace antigens.
- To discuss the diagnosis, treatment, and prognosis of occupational asthma.
Main Methods:
- Literature review of occupational asthma.
- Analysis of causative agents and exposure factors.
- Discussion of diagnostic and therapeutic strategies.
Main Results:
- Incidence of occupational asthma varies significantly across industries.
- Disease incidence is influenced by agent properties, exposure levels/duration, industrial hygiene, and host factors.
- IgE-mediated mechanisms are common with high-molecular-weight antigens.
Conclusions:
- Occupational asthma is a significant health concern with diverse triggers.
- Understanding risk factors and antigens is crucial for prevention and management.
- Comprehensive approaches to diagnosis, treatment, and prognosis are essential.