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A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
Published on: April 13, 2010
Airway responsiveness in an allergic rabbit model.
1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, 5th Floor Franklin Wilkins Building, Waterloo Campus, London, SE1 9NH, UK.
Journal of Pharmacological and Toxicological Methods
|August 23, 2011
Summary
This study shows allergic rabbits are a valuable asthma model. Skin tests predict airway inflammation but not airway hyperresponsiveness, suggesting a dissociation between inflammation and BHR.
Area of Science:
- Pulmonary immunology
- Allergic airway inflammation
- Animal models of respiratory disease
Background:
- Animal models are crucial for studying pulmonary diseases and asthma treatments.
- Neonatally immunized rabbits mimic human asthma, showing airway responses, inflammation, and hyperresponsiveness after allergen exposure.
- This model aids in understanding bronchial hyperresponsiveness (BHR) mechanisms and preclinical drug evaluation.
Purpose of the Study:
- Characterize airway responses in an allergic rabbit model.
- Evaluate the correlation between skin test reactivity, airway inflammation, and BHR.
Main Methods:
- New Zealand White rabbits were immunized neonatally with Alternaria tenius.
- Airway responsiveness to histamine, methacholine, and allergen was measured at 3 months.
- Bronchoalveolar lavage (BAL), skin tests, and passive cutaneous anaphylaxis (PCA) were performed.
Main Results:
- Allergen challenge caused bronchoconstriction, airway inflammation, and BHR in allergic rabbits.
- Skin test reactivity did not correlate with airway responsiveness to methacholine, histamine, or allergen.
- Skin test reactivity predicted airway inflammation, specifically eosinophil recruitment.
Conclusions:
- The allergic rabbit is a suitable model for allergic disease research.
- Skin test reactivity predicts airway inflammation but not airway hyperresponsiveness.
- Results suggest a dissociation between airway inflammation and BHR in this model.
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