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[The changes in plasma beta-thromboglobulin (beta-TG), platelet factor 4 (PF4) and thromboxane B2 (TXB2) after a bronchial provocation test (BPT) with house dust (HD) allergen]. 1991

M Mizuno, and M Adachi, and S Maruyama, and T Suganuma, and T Okada, and T Takahashi
First Department of Internal Medicine, School of Medicine, Showa University.

In order to investigate the role of platelets in allergic asthma, the time related changes in plasma levels of beta-TG, PF4 and TXB2 were evaluated following BPT with HD in 19 patients with bronchial asthma who were positive in skin test and RAST to HD. The results obtained were as follows. 1) Plasma beta-TG and PF4 levels tended to increase following BPT with HD at the time of immediate asthmatic response (IAR) in patients showing IAR alone. 2) Plasma beta-TG and PF4 levels increased significantly (p less than 0.05) at IAR and tended to increase at the time of late asthmatic response (LAR) in patients showing a dual asthmatic response (DAR). 3) The levels of plasma TXB2 in patients showing IAR alone significantly increased at IAR (p less than 0.05) and gradually decreased and the levels of plasma TXB2 in patients showing a DAR increased in each period of IAR, 3 hr after BPT and LAR, and the peak of TXB2 was observed in 3 hours after BPT. 4) These results suggest that platelets are activated at IAR and there was also a possible activation in platelets at LAR.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010978 Platelet Factor 4 A CXC chemokine that is found in the alpha granules of PLATELETS. The protein has a molecular size of 7800 kDa and can occur as a monomer, a dimer or a tetramer depending upon its concentration in solution. Platelet factor 4 has a high affinity for HEPARIN and is often found complexed with GLYCOPROTEINS such as PROTEIN C. Antiheparin Factor,CXCL4 Chemokine,Chemokine CXCL4,Heparin Neutralizing Protein,PF4 (Platelet Factor 4),gamma-Thromboglobulin,CXCL4, Chemokine,Chemokine, CXCL4,gamma Thromboglobulin
D001985 Bronchial Provocation Tests Tests involving inhalation of allergens (nebulized or in dust form), nebulized pharmacologically active solutions (e.g., histamine, methacholine), or control solutions, followed by assessment of respiratory function. These tests are used in the diagnosis of asthma. Allergen Bronchial Provocation Tests,Allergen Challenge, Endobronchial,Antigen Bronchial Provocation Tests,Bronchial Allergen Challenge,Bronchial Challenge Tests,Inhalation Provocation Tests,Provocation Tests, Bronchial,Endobronchial Challenge Tests,Allergen Challenge, Bronchial,Allergen Challenges, Bronchial,Allergen Challenges, Endobronchial,Bronchial Allergen Challenges,Bronchial Challenge Test,Bronchial Provocation Test,Challenge Test, Bronchial,Challenge Test, Endobronchial,Challenge Tests, Bronchial,Challenge Tests, Endobronchial,Challenge, Bronchial Allergen,Challenge, Endobronchial Allergen,Challenges, Bronchial Allergen,Challenges, Endobronchial Allergen,Endobronchial Allergen Challenge,Endobronchial Allergen Challenges,Endobronchial Challenge Test,Inhalation Provocation Test,Provocation Test, Bronchial,Provocation Test, Inhalation,Provocation Tests, Inhalation,Test, Bronchial Challenge,Test, Bronchial Provocation,Test, Endobronchial Challenge,Test, Inhalation Provocation,Tests, Bronchial Challenge,Tests, Bronchial Provocation,Tests, Endobronchial Challenge,Tests, Inhalation Provocation
D004391 Dust Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed) House Dust,Housedust,Dust, House
D005260 Female Females
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
D000485 Allergens Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). Allergen
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

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