The in vivo effect of isocyanate-induced asthma on basophil histamine release. 1998

S Kivity, and V Veintrov, and E Fireman, and O Agami, and Y Lerman
Institute of Pulmonary and Allergy Diseases, Tel Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Israel.

In vitro studies have suggested that basophils are involved in the asthmatic response to isocyanate. Classified by the type of airway response, three groups of patients exposed to isocyanate were studied: 1) nonreactive (n=3), 2) immediate responders (n=4), and 3) late responders (n=4). Basophil histamine release to concanavalin A (conA), FMLP, and anti-IgE was evaluated before and during the airway response. Histamine release significantly (P=0.009 for conA and 0.03 for anti-IgE) increased after exposure to isocyanate only in the group which had late bronchial response. Additionally, good correlation was found between baseline FEV1/FVC% and degree of histamine release of basophils stimulated with conA. These findings support a role for basophils in the late asthmatic response to isocyanate.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005541 Forced Expiratory Volume Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity. Forced Vital Capacity, Timed,Timed Vital Capacity,Vital Capacity, Timed,FEVt,Capacities, Timed Vital,Capacity, Timed Vital,Expiratory Volume, Forced,Expiratory Volumes, Forced,Forced Expiratory Volumes,Timed Vital Capacities,Vital Capacities, Timed,Volume, Forced Expiratory,Volumes, Forced Expiratory
D006636 Histamine Release The secretion of histamine from mast cell and basophil granules by exocytosis. This can be initiated by a number of factors, all of which involve binding of IgE, cross-linked by antigen, to the mast cell or basophil's Fc receptors. Once released, histamine binds to a number of different target cell receptors and exerts a wide variety of effects. Histamine Liberation,Histamine Liberations,Histamine Releases
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D001249 Asthma A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL). Asthma, Bronchial,Bronchial Asthma,Asthmas
D001491 Basophils Granular leukocytes characterized by a relatively pale-staining, lobate nucleus and cytoplasm containing coarse dark-staining granules of variable size and stainable by basic dyes. Basophil
D014051 Toluene 2,4-Diisocyanate Skin irritant and allergen used in the manufacture of polyurethane foams and other elastomers. Diisocyanatotoluene,Tolylene Diisocyanate,2,4-Toluenediisocyanate,Toluene Diisocyanate,2,4 Toluenediisocyanate,2,4-Diisocyanate, Toluene,Diisocyanate, Toluene,Diisocyanate, Tolylene,Toluene 2,4 Diisocyanate

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