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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.)

Association of plasma CD4OL with acute chest syndrome in sickle cell anemia

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Author(s):
Garrido, Vanessa Tonin ; Sonzogni, Laura ; Mtatiro, Siana Nkya ; Costa, Fernando F. ; Conran, Nicola ; Thein, Swee Lay
Total Authors: 6
Document type: Journal article
Source: CYTOKINE; v. 97, p. 104-107, SEP 2017.
Web of Science Citations: 9
Abstract

Platelet activation and platelet-derived cytokines contribute to the vascular inflammation and increased thrombotic activity known to occur in patients with sickle cell anemia (SCA). CD40 ligand (CD4OL), a platelet associated pro-inflammatory molecule that promotes endothelial cell activation, is elevated in the circulation of SCA patients. We sought to evaluate the association of CD4OL and inflammation with sickle-related clinical complications and laboratory variables in SCA patients. Soluble CD4OL, thrombospondin (TSP)-1 and tumor necrosis factor (TNF)-alpha were determined in the platelet-poor plasma of healthy individuals and steady-state SCA patients by ELISA. Lifetime clinical complications were verified by detailed review of patients' medical records. We found that plasma CD4OL was associated with acute chest syndrome (ACS), and that SCA patients with a lifetime history of ACS (ACS+) presented significantly higher plasma CD4OL and TSP-1 than patients who had never experienced ACS (ACS-). In the ACS+ group, both platelet:derived proteins (CD4OL and TSP-1) correlated with mean corpuscular volume, mean corpuscular hemoglobin and reticulocyte hemoglobin, while in the ACS group, CD4OL correlated with low red blood cell counts, hemoglobin, hematocrit and lactate dehydrogenase, and TSP-1 correlated with reticulocyte percentage and white blood cell count. As expected, CD4OL and TSP-1 correlated with platelet counts in both groups. These data highlight the possible role of platelet activation in ACS and suggest that plasma sCD4OL, together with TSP-1, may represent a potential marker of susceptibility to ACS in SCA. (AU)

FAPESP's process: 11/17553-7 - Expression of the inflammatory cytokine light in platelets of Sickle Cell disease patients: evaluation of activation of leukocytes and endothelial cells
Grantee:Vanessa Tonin Garrido
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 08/57441-0 - Clinical, cellular and molecular alterations in hemoglobinopathies and other hereditary hemolytic anemias
Grantee:Fernando Ferreira Costa
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/22043-0 - Evaluation of plasma levels of light and CD40L in sickle cell patients and during sickle cell crisis
Grantee:Vanessa Tonin Garrido
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 12/50582-3 - Scientific cooperation for the study of haemoglobinopathies: clinical, cellular and molecular alterations
Grantee:Nicola Amanda Conran Zorzetto
Support type: Regular Research Grants