Molecular basis for selective eosinophil trafficking in asthma: A multistep paradigm

JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY

卷:104

Review

Wardlaw, AJ

关键词: eosinophils;    migration;    adhesion;    chemotaxis;    asthma;   

DOI  :  10.1016/S0091-6749(99)70069-2

来源: Elsevier

【 摘 要 】

Asthma is characterized by a 50- to 100-fold increase in the number of eosinophils relative to neutrophils in the bronchial mucosa. This increase is not the result of a single molecular event but of the cumulative and sequential effects of several approximately 4-fold increases in selective eosinophil versus neutrophil migration, occurring at a number of stages in the Life cycle of the eosinophil, These steps include (1) effects on the bone marrow, mediated principally by IL-5, which result in a 4-fold increase in circulating eosinophils, (2) selective tethering of eosinophils to venular endothelium through the combined effects of P-selectin/P-selectin glycoprotein ligand 1 and very late activation antigen-4/vascular cell adhesion molecule-1, which has the potential for an up to 10-fold increase in eosinophil versus neutrophil adhesion, (3) selective chemotaxis under the influence of CC chemokines, and (4) prolonged survival, again mediated by IL-5, These events are integrated and directed by allergen-specific T(H)2 lymphocytes through the generation of IL-5, IL-4, and IL-13, The implications of this multistep process are that antagonists of IL-5, very late activation antigen-4, P-selectin glycoprotein ligand 1, and CCR3 as well as IL-4 and IL-13 each have the potential to markedly inhibit eosinophil recruitment in asthma.

【 授权许可】

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