tailieunhanh - Introduction to Medical Immunology - part 7

Mà một trong các đại lý dược sau đây nên được ngay lập tức quản lý cho một bệnh nhân bị sốc phản vệ nghi ngờ? A. Antihistaminics B. cholinergic thuốc C. Epinephrine D. methylxanthine E. Sodium cromoglycate 23,5 nào sau đây cùng với các pha rắn trong một thử nghiệm radioallergosorbent (RAST) khảo nghiệm? A. đưa ra chất gây dị ứng | Page 451 Which one of the following pharmacological agents should be immediately administered to a patient with suspected anaphylaxis A. Antihistaminics B. Cholinergic drugs C. Epinephrine D. Methylxanthines E. Sodium cromoglycate Which of the following is coupled to the solid phase in a radioallergosorbent test RAST assay A. A given allergen B. Anti-IgE C. Antibodies to a given allergen D. IgE E. The patient s serum Which of the following newly synthesized mast-cell mediators is responsible for the attraction of eosinophils to the peribronchial tissues in the late stages of an asthma attack A. Eosinophil chemotactic factor-A B. Leukotriene B-4 LTB-4 C. Major basic protein D. Platelet aggregation factor E. Prostaglandin E2 Of the following reagents which one will be able to induce the release of histamine from the mast cells of a ragweed-sensitized individual A. A univalent fragment of ragweed B. F ab 2 from an anti-IgE antibody C. Fab from an anti-IgE antibody D. IgE antiragweed E. IgG antiragweed A major control mechanism of type I hypersensitivity reactions mediated by eosinophils is the release of A. Cationic proteins B. Histaminase C. Leukotrienes C4 D4 and E4 D. Major basic protein E. Platelet activating factor Which of the following mediators is NOT involved directly or indirectly in negative feedback reactions in immediate hypersensitivity A. Eosinophil chemotactic factor-A B. Histaminase C. Histamine D. Phospholipase D E. Prostaglandin D2 What is the meaning of the incidental finding of an elevated serum IgE level of 500 IU mL in a clinically asymptomatic individual A. The subject is atopic B. HLA-B7 is likely to be represented on the individual s phenotype C. Hyposensitization is not likely to be effective Page 452 D. The individual is a high IgE producer E. The individual is likely to develop allergies Answers B The Fce-RI is the Fc receptor with highest affinity for its ligand IgE . It is only expressed on .