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Complement activation and C3 allotype distribution in patients with bronchial asthma
M Kirschfink1, F F Castro, U Rother
1Institute of Immunology, University of Heidelberg, FRG.
International Archives of Allergy and Immunology
|January 1, 1993
Summary
Complement activation occurs in asthma, indicating its inflammatory nature. This study found no differences in C3 allele frequencies in asthma patients compared to healthy individuals.
Area of Science:
- Immunology
- Pulmonology
Background:
- Asthma is a chronic respiratory disease characterized by airway inflammation.
- The role of the complement system in asthma pathogenesis is not fully understood.
Purpose of the Study:
- To investigate complement system activation in patients with intrinsic or extrinsic asthma.
- To examine C3 phenotype distribution in asthma patients.
Main Methods:
- Enzyme-linked immunosorbent assays (ELISAs) were used to detect activation-specific complement complexes.
- Complement activation pathways (classical and alternative) and membrane attack complex generation were assessed.
- C3 allele frequencies were analyzed and compared to healthy populations.
Main Results:
- Evidence of complement activation via both classical and alternative pathways was found.
- Generation of the membrane attack complex was detected in asthma patients.
- No significant differences in C3 allele frequencies were observed between asthma patients and healthy controls.
Conclusions:
- Complement activation plays a role in the inflammatory processes of bronchial asthma.
- These findings support the inflammatory nature of asthma.
- Complement system modulation may represent a therapeutic target for asthma.