Engin Yurdakul

Ankara University, Engüri, Ankara, Turkey

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Publications (3)1.88 Total impact

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    ABSTRACT: To evaluate whether the mode of delivery (vaginal versus C-section) influences the levels of CD4+CD25+FOXP3+ Treg cells in cord blood and maternal peripheral blood and also to examine its relationship with plasma cortisol levels. Newborns either born vaginally (n = 19) or via elective C- section (n = 20) and their mothers, as well as 20 healthy but not pregnant women, were included in the study. CD4+CD25+FOXP3 (Treg) cells were examined by flow cytometry. Total lymphocyte counts (TLC) and serum cortisol levels were also determined for all the groups. The percentages of CD4+CD25+FOXP3 cells and the serum cortisol levels of infants born vaginally (p < 0.004 and p < 0.0001) and their mothers (p < 0.0001 for both) were found to be significantly higher than those of newborns born by C-section and their mothers. Positive correlations were seen between CD4+CD25+FOXP3+ cells (r = 0.741) and serum cortisol levels (r = 0.468). No relationship was observed between newborns delivered by C-section and their mothers (r = 0.022 for both). This study suggests that mode of delivery affects cord blood Treg cells. Higher CD4+CD25+FOXP3+ Treg cells of newborns and their mothers in vaginal delivery group and their relationship with serum cortisol levels suggest a stress phenomenon related to vaginal delivery.
    The Indian Journal of Pediatrics 03/2011; 78(10):1234-8. DOI:10.1007/s12098-011-0400-6 · 0.92 Impact Factor
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    ABSTRACT: Endothelial protein C receptor (EPCR) is primarily localized on the endothelial cells of large blood vessels and is very low or absent in the microvascular endothelium of most tissues. EPCR augments the thrombin/thrombomodulin-dependent activation of protein C by 5- to 20-fold. EPCR appears to be physiologically significant in the control of blood coagulation and inflammation and in the host response to gram-negative sepsis. Here, the authors report an 8-month-old boy, who had chronic liver disease due to undetermined cause. He had Staphylococcus aureus and Candida albicans sepsis and died due to gastrointestinal, lung, and peritoneal bleeding during follow-up. Serum soluble EPCR level of the patient was high (225 ng/mL) during sepsis. A homozygous 23-bp insertion of EPCR gene was demonstrated. This case indicates the importance the EPCR gene plaus in pediatric sepsis. Homozygous 23-bp insertion of the EPCR gene may be associated with a tendency to sepsis and poor outcome.
    Pediatric Hematology and Oncology 07/2009; 24(3):199-204. DOI:10.1080/08880010701198811 · 0.96 Impact Factor