Late asthmatic reactions, airway inflammation and chronic asthma in toluene-diisocyanate-sensitized subjects. 1991

L M Fabbri, and M Saetta, and G Picotti, and C E Mapp
Interuniversity Center on Cellular and Molecular Mechanisms of Lung Injury, University of Brescia, Italy.

To determine the importance of airway inflammation for exacerbation and prognosis of asthma induced by toluene diisocyanate (TDI), we first examined sensitized subjects during asthmatic reactions induced by exposure to TDI in the laboratory. We observed that late and dual, but not early, asthmatic reactions induced by TDI are accompanied by a transient increase of airway responsiveness, bronchoalveolar neutrophilia followed by eosinophilia and by an increase of LTB4 and albumin in bronchoalveolar lavage fluid. All these effects were prevented by pretreatment with prednisone. In addition, we examined the lung pathology of 1 sensitized subject who died after exposure at work. The pathologic features of fatal asthma induced by TDI and of chronic asthma induced by TDI suggest the importance of inflammation for the exacerbation and prognosis of the disease.

UI MeSH Term Description Entries
D007114 Immunization Deliberate stimulation of the host's immune response. ACTIVE IMMUNIZATION involves administration of ANTIGENS or IMMUNOLOGIC ADJUVANTS. PASSIVE IMMUNIZATION involves administration of IMMUNE SERA or LYMPHOCYTES or their extracts (e.g., transfer factor, immune RNA) or transplantation of immunocompetent cell producing tissue (thymus or bone marrow). Immunologic Stimulation,Immunostimulation,Sensitization, Immunologic,Variolation,Immunologic Sensitization,Immunological Stimulation,Sensitization, Immunological,Stimulation, Immunologic,Immunizations,Immunological Sensitization,Immunological Sensitizations,Immunological Stimulations,Sensitizations, Immunological,Stimulation, Immunological,Stimulations, Immunological,Variolations
D007249 Inflammation A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function. Innate Inflammatory Response,Inflammations,Inflammatory Response, Innate,Innate Inflammatory Responses
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D009784 Occupational Diseases Diseases caused by factors involved in one's employment. Diseases, Occupational,Occupational Illnesses,Disease, Occupational,Illnesse, Occupational,Illnesses, Occupational,Occupational Disease,Occupational Illnesse
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D001980 Bronchi The larger air passages of the lungs arising from the terminal bifurcation of the TRACHEA. They include the largest two primary bronchi which branch out into secondary bronchi, and tertiary bronchi which extend into BRONCHIOLES and PULMONARY ALVEOLI. Primary Bronchi,Primary Bronchus,Secondary Bronchi,Secondary Bronchus,Tertiary Bronchi,Tertiary Bronchus,Bronchi, Primary,Bronchi, Secondary,Bronchi, Tertiary,Bronchus,Bronchus, Primary,Bronchus, Secondary,Bronchus, Tertiary
D004804 Eosinophils Granular leukocytes with a nucleus that usually has two lobes connected by a slender thread of chromatin, and cytoplasm containing coarse, round granules that are uniform in size and stainable by eosin. Eosinophil
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
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
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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