1. Rhinoconjunctivitis severity induced by cat exposure influences early and late asthmatic responses: Evidence from an environmental exposure chamber.
- Author
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Piotin A, Godet J, Domis N, and de Blay F
- Subjects
- Cats, Humans, Female, Male, Adult, Animals, Middle Aged, Skin Tests, Adolescent, Rhinitis, Allergic immunology, Rhinitis, Allergic etiology, Rhinitis, Allergic diagnosis, Risk Factors, Young Adult, Asthma immunology, Asthma etiology, Asthma diagnosis, Environmental Exposure adverse effects, Conjunctivitis, Allergic immunology, Conjunctivitis, Allergic etiology, Conjunctivitis, Allergic diagnosis, Allergens immunology, Severity of Illness Index
- Abstract
Background: The impact of allergic rhinoconjunctivitis on the early (EAR) and late asthmatic response (LAR) has yet to be assessed during optimal allergen exposure conditions., Objective: We aimed to assess predictive factors of the EAR and LAR and to evaluate the relation between rhinitis, conjunctivitis and asthma induced by cat allergen exposure in an environmental exposure chamber (EEC)., Methods: Data from two cohort studies involving asthmatic patients with cat allergy who performed a cat allergen exposure challenge in ALYATEC EEC were analysed. Spirometry, visual analogue scale (VAS) for asthma, VAS for rhinitis, Total Nasal Symptoms Score, Total Ocular Symptoms Score (TOSS), Rhinoconjunctivitis Total Symptoms Score and Abelson score were used to assess asthma, rhinitis and conjunctivitis during and after exposure., Results: An EAR occurred in 65.1% of patients, 32.1% of whom had a LAR. The diameter of the prick test to cat allergens and non-specific bronchial hypersensitivity level were independent risk factors for EAR (p < .05). No independent risk factors for LAR were identified. Rhinoconjunctivitis severity during exposure correlated with the asthma VAS during EAR and LAR (p < .05). Allergen exposure time needed to trigger an EAR correlated with the Abelson score during exposure (p < .05). The asthma VAS and TOSS during exposure correlated with faster LAR occurrence (p < .05)., Conclusion: Prick test size and non-specific bronchial hypersensitivity level were confirmed as independent predictive factors of EAR during allergen exposure in an EEC. This study demonstrated the relation between the severity of rhinitis, conjunctivitis and asthma induced by allergen exposure for both EAR and LAR., (© 2024 The Authors. Clinical & Experimental Allergy published by John Wiley & Sons Ltd.)
- Published
- 2024
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