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论文类型：期刊论文

发表时间：2016-05-01

发表刊物：IMMUNOLOGY LETTERS

收录刊物：SCIE、PubMed、Scopus

卷号：173

页面范围：55-60

ISSN号：0165-2478

关键字：Neutrophil chemotaxis; Sepsis; TLR2; CXCR2; TLR2-CXCR2 pathway; Microfluidic chip

摘要：This study aimed to design a microfluidic chip to measure neutrophil chemotaxis, which is a convenient assay to assess the severity and prognosis of sepsis, and to study the mechanisms involved in the variation of neutrophil chemotaxis. Neutrophil chemotaxis was investigated in this microfluidic device by measuring the migration speed of neutrophils following the LPS concentration gradient stimulus. Neutrophils of 32 sepsis patients were divided into three groups according to the seriousness of physician-diagnosed sepsis, and 12 healthy individuals served as controls. Statistical significance was set at an alpha value of P<0.05. Neutrophil chemotaxis was significantly decreased following the seriousness of sepsis. By contrast, in septic neutrophils, the expression of TLR2 was significantly increased, whereas the expression of CXCR2 was significantly decreased. Neutrophil chemotaxis in sepsis was significantly reduced as compared to healthy individuals. We speculated that impaired neutrophil chemotaxis in sepsis was probably mediated by the TLR2-CXCR2 pathway. (C) 2016 European Federation of Immunological Societies. Published by Elsevier B.V. All rights reserved.