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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Adolescent, Adult, Animals, Bronchial Hyperreactivity, Dermatophagoides pteronyssinus, Female, Histamine, Humans, Immunoglobulin E, Linear Models, Male, Pulmonary Ventilation, Respiratory Hypersensitivity, Skin Tests, Spirometry.
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Is normal variation of bronchial reactivity in nonasthmatics associated with the level of mite-specific IgE? Context: To investigate association between non-specific bronchial reactivity (NBR) and level of mite specific IgE amongst mite-sensitized non-asthmatic subjects. Subjects attending occupational check-up were assessed for: respiratory symptoms, atopic status (skin prick testing [SPT], total and specific IgE), spirometry and NBR. Individuals without history of respiratory disease (N = 234) were included into analysis. All subjects had normal spirometry and 99% had normal NBR while 41.8% had detectable specific IgE to mites. Lung function parameters and NBR were significantly lower in mite sensitized subjects. Multiple regression analysis controlling for age, gender, smoking, family history, SPT, IgE, and lung function showed that NBR was significantly associated only with mite specific IgE level (beta = 0.26; 95% CI, 0.05-0.47; p = 0.018).
assistant
Even in subjects without allergic symptoms, IgE-mediated sensitization does not appear to be all or nothing phenomenon influencing the normal variability of underlying airway reactivity. Final Decision: yes