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First published on June 29, 2008
Clinical and Applied Thrombosis/Hemostasis 2008, doi:10.1177/1076029608319880

Article

The Relation Between Cytokines, Soluble Endothelial Protein C Receptor, and Factor VIII Levels in Turkish Pediatric Stroke Patients

Denizay Yürürer, MD, Serap Teber, Gülhis Deda, MD, Yonca Egin, MD, and Nejat Akar*

* To whom correspondence should be addressed. E-mail: akar{at}medicine.ankara.edu.tr.


  Abstract
The aim of the authors is to examine the relationship between the cytokine levels that are thought to be involved in stroke etiopathogenesis (tumor necrosis factor [TNF]-{alpha}, interleukin [IL]-2, IL-6, IL-8, IL-11), soluble protein C receptor (sEPCR), and factor VIII (FVIII) levels. The study included 27 patients with stroke and 30 healthy controls, aged 0 to 18. In the comparison of the sEPCR, cytokine, and FVIII levels between patient and control groups, median levels of TNF-{alpha}, IL-2, IL-6, and IL-8 are found to be high in the patient group when compared with controls, whereas there is no difference in sEPCR, IL-11, and FVIII levels. In the patient group, a positive correlation is seen between TNF-{alpha} levels and IL-2 and IL-6 levels, between IL-2 and IL-6 levels, and between IL-6 and IL-8 levels, whereas a negative relationship is seen between sEPCR and FVIII. In the control group apart from the patient group, a negative relationship is seen between TNF-{alpha} and FVIII, whereas there is a positive relationship between IL-11 and sEPCR levels. Median sEPCR levels in patients who have normal or low FVIII levels are significantly high when compared with those with high FVIII levels. In conclusion, in the pediatric population, an increase in TNF-{alpha}, IL-2, IL-6, and IL8 levels is seen. Also, an inverse relationship of sEPCR and FVIII levels is shown for the first time. This study provides a basis for ongoing studies that aim to clarify stroke etiopathogenesis. Studies with larger series of patients are warranted to confirm this hypothesis.


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