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HLA antigen frequencies in flax byssinosis patients
British Journal of Industrial Medicine
|May 1, 1979
Summary
Certain human leukocyte antigens (HLA) may influence susceptibility to flax dust-induced byssinosis. HLA-B27 was more frequent in patients with byssinosis, suggesting a potential genetic link to the disease.
Area of Science:
- Immunogenetics
- Occupational Medicine
- Pulmonary Medicine
Background:
- Byssinosis, a lung disease caused by flax dust exposure, affects only a subset of workers.
- The factors determining individual susceptibility or resistance to byssinosis remain largely unknown.
Purpose of the Study:
- To investigate the potential role of human leukocyte antigen (HLA) incidence in determining susceptibility to flax dust-induced byssinosis.
Main Methods:
- Tissue typing was performed on 40 patients diagnosed with flax byssinosis to identify HLA-A and HLA-B antigens.
- Patient HLA antigen frequencies were compared to those of a control group.
Main Results:
- The HLA-B27 antigen was found significantly more frequently in patients with byssinosis (22.5%) compared to controls (5.5%) (P = 0.029).
- HLA-A11 showed a higher prevalence in patients (30%) versus controls (14%), but this difference was not statistically significant after correction.
- The absence of HLA-B27 in 77.5% of affected patients indicates it is not a prerequisite for developing byssinosis.
Conclusions:
- The increased frequency of HLA-B27 in flax byssinosis suggests a possible genetic association.
- This association may be linked to other genes, potentially those involved in immune response regulation or other HLA loci.