Biomaterial Database

Airway hyperresponsiveness is associated with inflammatory cell infiltration in allergic brown-Norway rats. 1992

W Elwood, and P J Barnes, and K F Chung

Department of Thoracic Medicine, National Heart and Lung Institute, Royal Brompton National Heart and Lung Hospital, London, UK.

The time course of the development of airway hyperresponsiveness (AHR) to inhaled acetylcholine (ACh) and the associated inflammatory cell recovery in bronchoalveolar lavage fluid (BAL) in actively sensitised Brown-Norway rats was studied following challenge with inhaled ovalbumin (OA). IgE for OA was detected in serum obtained from sensitised rats using passive cutaneous anaphylaxis, at titres of 1:10 to 1:30; none was detected in unsensitised animals. There was no significant change in either airway responsiveness to inhaled ACh or in BAL cell counts in rats challenged with saline over the 24 h. Following challenge with a 1% OA aerosol, airway responsiveness to inhaled ACh increased over the 24-hour period, maximal at 18-24 h (saline-challenged group mean -log PC200 1.95 +/- 0.07 M; OA-challenged group mean -log PC200 2.30 +/- 0.05 M; p < 0.01). The composition of the inflammatory cells in the BAL fluid after allergen inhalation varied over the 24-hour period, with an initial neutrophilia at 5-8 h (p < 0.01), followed at 18-24 h by an increase in lymphocytes (p < 0.01) and marked eosinophilia (p < 0.01). There was a significant correlation between airway responsiveness and eosinophil recovery at 5-8 h (p < 0.05), and at 18-24 h after allergen exposure (p < 0.05). At 18-24 h there was also a significant correlation between neutrophils and airway responsiveness (p < 0.05). There was no difference between baseline lung resistance in matched saline- or OA-challenged animals at each time point.(ABSTRACT TRUNCATED AT 250 WORDS)

UI	MeSH Term	Description	Entries
D007073	Immunoglobulin E	An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).	IgE
D007958	Leukocyte Count	The number of WHITE BLOOD CELLS per unit volume in venous BLOOD. A differential leukocyte count measures the relative numbers of the different types of white cells.	Blood Cell Count, White,Differential Leukocyte Count,Leukocyte Count, Differential,Leukocyte Number,White Blood Cell Count,Count, Differential Leukocyte,Count, Leukocyte,Counts, Differential Leukocyte,Counts, Leukocyte,Differential Leukocyte Counts,Leukocyte Counts,Leukocyte Counts, Differential,Leukocyte Numbers,Number, Leukocyte,Numbers, Leukocyte
D007962	Leukocytes	White blood cells. These include granular leukocytes (BASOPHILS; EOSINOPHILS; and NEUTROPHILS) as well as non-granular leukocytes (LYMPHOCYTES and MONOCYTES).	Blood Cells, White,Blood Corpuscles, White,White Blood Cells,White Blood Corpuscles,Blood Cell, White,Blood Corpuscle, White,Corpuscle, White Blood,Corpuscles, White Blood,Leukocyte,White Blood Cell,White Blood Corpuscle
D008297	Male		Males
D010047	Ovalbumin	An albumin obtained from the white of eggs. It is a member of the serpin superfamily.	Serpin B14
D010323	Passive Cutaneous Anaphylaxis	An evanescent cutaneous reaction occurring when antibody is injected into a local area on the skin and antigen is subsequently injected intravenously along with a dye. The dye makes the rapidly occurring capillary dilatation and increased vascular permeability readily visible by leakage into the reaction site. PCA is a sensitive reaction for detecting very small quantities of antibodies and is also a method for studying the mechanisms of immediate hypersensitivity.	Anaphylaxis, Passive Cutaneous,PCA,Cutaneous Anaphylaxis, Passive
D011914	Rats, Inbred BN	An inbred strain of rat that is widely used in a variety of research areas such as the study of ASTHMA; CARCINOGENESIS; AGING; and LEUKEMIA.	Rats, Inbred Brown Norway,Rats, BN,BN Rat,BN Rat, Inbred,BN Rats,BN Rats, Inbred,Inbred BN Rat,Inbred BN Rats,Rat, BN,Rat, Inbred BN
D012129	Respiratory Function Tests	Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.	Lung Function Tests,Pulmonary Function Tests,Function Test, Pulmonary,Function Tests, Pulmonary,Pulmonary Function Test,Test, Pulmonary Function,Tests, Pulmonary Function,Function Test, Lung,Function Test, Respiratory,Function Tests, Lung,Function Tests, Respiratory,Lung Function Test,Respiratory Function Test,Test, Lung Function,Test, Respiratory Function,Tests, Lung Function,Tests, Respiratory Function
D012130	Respiratory Hypersensitivity	A form of hypersensitivity affecting the respiratory tract. It includes ASTHMA and RHINITIS, ALLERGIC, SEASONAL.	Airway Hyperresponsiveness,Hypersensitivity, Respiratory,Airway Hyper-Responsiveness,Airway Hyper Responsiveness,Airway Hyperresponsivenesses,Hyper-Responsiveness, Airway,Hyperresponsiveness, Airway,Respiratory Hypersensitivities
D001992	Bronchoalveolar Lavage Fluid	Washing liquid obtained from irrigation of the lung, including the BRONCHI and the PULMONARY ALVEOLI. It is generally used to assess biochemical, inflammatory, or infection status of the lung.	Alveolar Lavage Fluid,Bronchial Lavage Fluid,Lung Lavage Fluid,Bronchial Alveolar Lavage Fluid,Lavage Fluid, Bronchial,Lavage Fluid, Lung,Pulmonary Lavage Fluid,Alveolar Lavage Fluids,Bronchial Lavage Fluids,Bronchoalveolar Lavage Fluids,Lavage Fluid, Alveolar,Lavage Fluid, Bronchoalveolar,Lavage Fluid, Pulmonary,Lavage Fluids, Alveolar,Lavage Fluids, Bronchial,Lavage Fluids, Bronchoalveolar,Lavage Fluids, Lung,Lavage Fluids, Pulmonary,Lung Lavage Fluids,Pulmonary Lavage Fluids