Selective Nasal Allergen Provocation Induces Substance P–Mediated Bronchial Hyperresponsiveness
نویسندگان
چکیده
منابع مشابه
Allergen-induced Bronchial Hyperresponsiveness
Bradykinin (BK) is a peptide mediator generated at sites of inflammation and its effects are mediated through constitutively expressed B 2 receptor or through induction of B 1 receptors. We examined the role of these receptors in bronchial hyperresponsiveness (BHR). Brown-Norway rats sensitized with ovalbumin (OA) and Al(OH) 3 intraperitoneally, were exposed 3 wk later to either saline or OA ae...
متن کاملSegmental bronchial provocation induces nasal inflammation in allergic rhinitis patients.
Allergic rhinitis and asthma often coexist and share a genetic background. Pathophysiologic connections between the nose and lungs are still not entirely understood. This study was undertaken to compare allergic inflammation and clinical findings in the upper and lower airways after segmental bronchial provocation (SBP) in nonasthmatic allergic rhinitis patients. Eight nonasthmatic, grass polle...
متن کاملLocal and systemic effects of cat allergen nasal provocation.
BACKGROUND Cat allergen is widely distributed in homes and schools; allergic sensitization is common. OBJECTIVE To develop a model of cat allergen nasal challenge to establish dose-response and time-course characteristics and investigate local and systemic biomarkers of allergic inflammation. METHODS Nineteen cat-allergic individuals underwent titrated nasal challenge, range 0.243 to 14.6 μ...
متن کاملNasal allergen provocation test in nasal polyposis with and without allergy
Methods Four groups of patients (n=48) underwent nasal allergen provocation test for grass pollen. We included 12 patients with allergic rhinitis based on grass allergy, 12 patients with CRSwNP without grass allergy, 12 patients with CRSwNP with grass allergy, and 12 control patients. The diagnosis of grass allergy was based on skin prick test and RAST. The test was positive based on change in ...
متن کاملDynamic Changes in Heart Rate Variability and Nasal Airflow Resistance during Nasal Allergen Provocation Test
Allergic rhinitis is a major chronic respiratory disease and an immunoneuronal disorder. We aimed at providing further knowledge on the function of the neural system in nasal allergic reaction. Here, a method to assess simultaneously the nasal airflow resistance and the underlying function of autonomic nervous system (ANS) is presented and used during the nasal provocation of allergic and nonal...
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ژورنال
عنوان ژورنال: American Journal of Respiratory Cell and Molecular Biology
سال: 2011
ISSN: 1044-1549,1535-4989
DOI: 10.1165/rcmb.2009-0425oc