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Enhanced production of leukotrienes by peripheral leukocytes and specific IgE antibodies in patients with chronic obstructive pulmonary disease. 2001

F Mitsunobu, and T Mifune, and Y Hosaki, and K Ashida, and H Tsugeno, and M Okamoto, and S Takata, and Y Tanizaki
Department of Medicine, Misasa Medical Branch, Okayama University Medical School, Japan.

BACKGROUND How leukotrienes (LTs) and IgE-mediated allergy reflect clinical features in patients with chronic obstructive pulmonary disease (COPD) remains unclear. OBJECTIVE Our goal was to determine whether LTB4 and LTC4 would correlate with airway obstruction and whether IgE-mediated allergy would influence the generation of LTs and bronchial hyperresponsiveness in patients with COPD. METHODS We measured the pulmonary function, methacholine bronchial hyperresponsiveness, and generation of LTB4 and LTC4 from peripheral leukocytes stimulated with calcium ionophore A23187 in relation to the presence of specific IgE antibodies against inhalant allergens. RESULTS The leukocytes of patients with COPD generated significantly more LTB4 (with allergy, P <.001; without allergy, P <.001) and LTC4 (with allergy, P <.001; without allergy, P <.01) than the leukocytes of the control subjects. LTC4 production was significantly higher in the allergic COPD subjects than in the nonallergic COPD patients (P <.01), but the amount of LTB4 generated was not significantly different. FEV(1) significantly correlated with the level of both LTB4 (with allergy, r = -0.556, P =.0375; without allergy, r = -0.731, P =.0046) and LTC4 (with allergy, r = -0.764, P =.0043; without allergy, r = -0.526, P =.0414) generation in COPD. The log(10) of the minimum dose of methacholine was significantly higher in COPD patients without allergy than in those with allergy (P <.05). CONCLUSIONS Enhanced LT generation from peripheral leukocytes is observed in patients with COPD, and the presence of specific IgE antibodies against inhalant allergens enhances LTC4 generation, bronchial hyperresponsiveness, and the relationship between LTC4 generation and airway obstruction.

UI MeSH Term Description Entries
D007073 Immunoglobulin E An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). IgE
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
D008173 Lung Diseases, Obstructive Any disorder marked by obstruction of conducting airways of the lung. AIRWAY OBSTRUCTION may be acute, chronic, intermittent, or persistent. Obstructive Lung Diseases,Obstructive Pulmonary Diseases,Lung Disease, Obstructive,Obstructive Lung Disease,Obstructive Pulmonary Disease,Pulmonary Disease, Obstructive,Pulmonary Diseases, Obstructive
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
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000001 Calcimycin An ionophorous, polyether antibiotic from Streptomyces chartreusensis. It binds and transports CALCIUM and other divalent cations across membranes and uncouples oxidative phosphorylation while inhibiting ATPase of rat liver mitochondria. The substance is used mostly as a biochemical tool to study the role of divalent cations in various biological systems. 4-Benzoxazolecarboxylic acid, 5-(methylamino)-2-((3,9,11-trimethyl-8-(1-methyl-2-oxo-2-(1H-pyrrol-2-yl)ethyl)-1,7-dioxaspiro(5.5)undec-2-yl)methyl)-, (6S-(6alpha(2S*,3S*),8beta(R*),9beta,11alpha))-,A-23187,A23187,Antibiotic A23187,A 23187,A23187, Antibiotic
D000888 Antibodies, Anti-Idiotypic Antibodies which react with the individual structural determinants (idiotopes) on the variable region of other antibodies. Anti-Antibodies,Anti-Idiotype Antibodies,Antibodies, Internal Image,Antigamma Globulin Antibodies,Antiglobulins,Anti Antibodies,Anti-gamma Globulin Antibodies,Anti Idiotype Antibodies,Anti gamma Globulin Antibodies,Anti-Idiotypic Antibodies,Antibodies, Anti,Antibodies, Anti Idiotypic,Antibodies, Anti-Idiotype,Antibodies, Anti-gamma Globulin,Antibodies, Antigamma Globulin,Globulin Antibodies, Anti-gamma,Globulin Antibodies, Antigamma,Image Antibodies, Internal,Internal Image Antibodies
D000918 Antibody Specificity The property of antibodies which enables them to react with some ANTIGENIC DETERMINANTS and not with others. Specificity is dependent on chemical composition, physical forces, and molecular structure at the binding site. Antibody Specificities,Specificities, Antibody,Specificity, Antibody
D015289 Leukotrienes A family of biologically active compounds derived from arachidonic acid by oxidative metabolism through the 5-lipoxygenase pathway. They participate in host defense reactions and pathophysiological conditions such as immediate hypersensitivity and inflammation. They have potent actions on many essential organs and systems, including the cardiovascular, pulmonary, and central nervous system as well as the gastrointestinal tract and the immune system. Leukotriene
D016535 Bronchial Hyperreactivity Tendency of the smooth muscle of the tracheobronchial tree to contract more intensely in response to a given stimulus than it does in the response seen in normal individuals. This condition is present in virtually all symptomatic patients with asthma. The most prominent manifestation of this smooth muscle contraction is a decrease in airway caliber that can be readily measured in the pulmonary function laboratory. Bronchial Hyperreactivities,Hyperreactivities, Bronchial,Hyperreactivity, Bronchial

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