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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Increased adhesive properties of neutrophils and inflammatory markers in venous thromboembolism patients with residual vein occlusion and high D-dimer levels

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Author(s):
Zapponi, Kiara C. S. [1] ; Mazetto, Bruna M. [1] ; Bittar, Luis F. [1] ; Barnabe, Aline [1] ; Santiago-Bassora, Fernanda D. [1] ; De Paula, Erich V. [2] ; Orsi, Fernanda A. [1] ; Franco-Penteado, Carla F. [1] ; Conran, Nicola [1] ; Annichino-Bizzacchi, Joyce M. [1]
Total Authors: 10
Affiliation:
[1] Univ Campinas UNICAMP, Hematol & Hemotherapy Ctr, Sao Paulo - Brazil
[2] Univ Campinas UNICAMP, Dept Clin Pathol, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: THROMBOSIS RESEARCH; v. 133, n. 5, p. 736-742, MAY 2014.
Web of Science Citations: 10
Abstract

Background: Venous thromboembolism (VTE) develops via a multicellular process on the endothelial surface. Although widely recognized, the relationship between inflammation and thrombosis, this relationship has been mostly explored in clinical studies by measuring circulating levels of inflammatory cytokines. However, the role of inflammatory cells, such as neutrophils, in the pathogenesis of VTE is not clear in humans. Aims: To evaluate the adhesive properties of neutrophils, erythrocytes and platelets in VTE patients and to correlate findings with inflammatory and hypercoagulability marker levels. Methods: Study group consisted of twenty-nine VTE patients and controls matched according to age, gender and ethnic background. Adhesive properties of neutrophils, erythrocytes and platelets were determined using a static adhesion assay. Neutrophil adhesionmolecules expressions were evaluated by flow cytometry. Inflammatory and hypercoagulability marker levels were evaluated by standard methods. Residual vein occlusion (RVO) was evaluated by Doppler ultrasound. Results: No significant difference could be observed in platelet and erythrocyte adhesion between VTE patients and controls. Interestingly, VTE patients with high levels of D-dimer and RVO, demonstrated a significant increase in neutrophil adhesion, compared to controls and remaining patients. Inflammatory markers (IL-6, IL-8, TNF-alpha) were also significantly elevated in this subgroup, compared to other VTE patients. Adhesive properties of neutrophils correlatedwith IL-6 and D-dimer levels. Neutrophils adhesionmolecules (CD11a, CD11b and CD18) were not altered in any of the groups. Conclusion: These findings not only support the hypothesis of an association between inflammation and hypercoagulability, but more importantly, highlight the role of neutrophils in this process. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 10/12352-0 - Evaluation of adhesive properties of erythrocytes, neutrophils and platelets of patients with venous thromboembolism
Grantee:Kiara Cristina Senger Zapponi Cerri
Support Opportunities: Scholarships in Brazil - Master