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[Eosinophilia and respiratory function in the asthmatic (author's transl)]
La Semaine Des Hopitaux : Organe Fonde Par L'Association D'Enseignement Medical Des Hopitaux De Paris
|February 8, 1979
Summary
Total eosinophil count (TEC) is significantly higher in asthmatic patients compared to healthy individuals. This count is not affected by meals and correlates with asthma severity, suggesting a link to underlying disease mechanisms.
Area of Science:
- Allergy and Immunology
- Pulmonology
- Clinical Pathology
Context:
- Asthma is a chronic respiratory disease characterized by airway inflammation.
- Eosinophils play a role in allergic inflammation and asthma pathogenesis.
- Accurate biomarkers for asthma severity and type are crucial for effective management.
Purpose:
- To investigate the Total Eosinophil Count (TEC) in normal subjects and asthmatic patients.
- To determine the influence of a meal on TEC.
- To explore the correlation between TEC, asthma characteristics, and respiratory function.
Summary:
- Total eosinophil count (TEC) was significantly higher in asthmatic patients (geometric mean 304) than in normal subjects (144).
- A meal did not affect TEC results. A significant inverse correlation was found between the logarithm of TEC and a specific quotient in asthmatics.
- Asthma onset after 40 years was associated with higher TEC and greater respiratory function impairment compared to early-onset asthma.
Impact:
- Elevated TEC in asthmatics suggests a role for eosinophilia in the disease.
- The correlation between TEC and asthma severity indicates TEC's potential as a prognostic marker.
- Findings suggest distinct underlying mechanisms in extrinsic (inhalant allergens) versus intrinsic (circulating immune complexes) asthma.