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[Inhibitory effect of ONO-1078, a novel leukotriene receptor antagonist, on human peripheral blood eosinophils]. 1996

S Kobayashi, and K Yoshida, and A Mori, and H Sugiyama, and M Suko, and H Okudaira, and K Ito, and S Inokuma, and Y Matsumura
Department of Medicine and Physical Therapy, University of Tokyo.

To determine whether ONO-1078, leukotriene receptor antagonist, inhibits the activation of eosinophils, we investigated the effect of ONO-1078 on the release of leukotriene (LTC4) and eosinophil cationic protein (ECP) from human peripheral blood eosinophils of allergic patients and normal subjects. After preincubation with ONO-1078, eosinophils were incubated with calcium ionophore (A23187). ONO-1078 10(-5) and 10(-6) M inhibited LTC4 release of allergic patients eosinophils and 10(-5)-10(-9) M inhibited LTC4 release of normal subjects eosinophils. ONO-1078, 10(-5) M, also inhibited ECP release of eosinophils obtained from both asthma patients and normal subjects. We think that ONO-1078 may have another pharmacological effect to prevent the activation of human peripheral blood eosinophils by inhibiting LTC4 and ECP release. These results suggest that ONO-1078 might be useful in controlling bronchial asthma.

UI MeSH Term Description Entries
D008297 Male Males
D001798 Blood Proteins Proteins that are present in blood serum, including SERUM ALBUMIN; BLOOD COAGULATION FACTORS; and many other types of proteins. Blood Protein,Plasma Protein,Plasma Proteins,Serum Protein,Serum Proteins,Protein, Blood,Protein, Plasma,Protein, Serum,Proteins, Blood,Proteins, Plasma,Proteins, Serum
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002867 Chromones 1,4-Benzopyrones,Chromone,1,4 Benzopyrones
D003864 Depression, Chemical The decrease in a measurable parameter of a PHYSIOLOGICAL PROCESS, including cellular, microbial, and plant; immunological, cardiovascular, respiratory, reproductive, urinary, digestive, neural, musculoskeletal, ocular, and skin physiological processes; or METABOLIC PROCESS, including enzymatic and other pharmacological processes, by a drug or other chemical. Chemical Depression,Chemical Depressions,Depressions, Chemical
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
D005260 Female Females
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
D012260 Ribonucleases Enzymes that catalyze the hydrolysis of ester bonds within RNA. EC 3.1.-. Nucleases, RNA,RNase,Acid Ribonuclease,Alkaline Ribonuclease,Ribonuclease,RNA Nucleases,Ribonuclease, Acid,Ribonuclease, Alkaline

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