Browsing by Author "Sagol, S"

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    Evaluation Of VEGF, EGF-R AND TGF-α In Placenta Of Pregnancies With Preeclampsia By Immunohistochemistry
    Çirpanli, T; Akercan, F; Terek, MC; Özcakir, HT; Giray, G; Sagol, S; Karadadas, N
    Objective: The aim of the study is to determine VEGF, EGFR and TGF-alpha with the immunohistochemical staining in placenta biopsies of patients with preeclampsia. Design: Prospective case control study. Materials and Methods: Biopsies from the placenta were obtained from ten patients with preeclapmsia and ten patients of control group during the cesarean section. Placenta biopsies were examined for VEGF, EGF-R and TGF-alpha distribution with avidin-biotinperoxidase immunohistochemistry. The staining intensities were graded semi-quantitatively by the two histologists who were blinded to the groups and the H-score was calculated by light microscopic examination. Results: The VEGF, EGFR and TGF-alpha expression was significantly higher in placenta biopsies of preeclamptic patient compared to controls (271.2 +/- 22.65 versus 201.9 +/- 12.33, p=0.000; 186.3 +/- 4.98 versus 150.3 +/- 5.7, p=0.000; 185.1 +/- 7.48 versus 169.2 +/- 6.19, p=0.000; respectively). Conclusion: Immunostaining of VEGF, EGF-R and TGF-alpha is significantly higher in placenta biopsies in patients with preeclampsia.
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    Evaluation of VEGF in placental bed biopsies from preeclamptic women by immunohistochemistry
    Cirpan, T; Akercan, F; Terek, MC; Kazandi, M; Ozcakir, HT; Giray, G; Sagol, S
    Objective: The aim of the study was to determine VEGF protein with immunohistochemical staining in placental bed biopsies of preeclamptic pregnancies in comparison to normal controls. Design: Prospective cohort Study. Methods: The placental bed biopsies were obtained from 12 patients with preeclapmsia and ten patients for a control group at the time of cesarean delivery. Tissue samples of the placental bed were examined for VEGF protein distribution with avidin-biotin-peroxidase immunohistochemistry. Two blinded histopathologists were asked to score each sample for the intensity of staining and the number of cells stained in a randomly selected HPF of each sample. The resulting H-score was computed as a product of intensity and percent of cells stained. Results: VEGF expression was significantly lower in both the myometrium and stroma of the preeclamptic group compared to the control group (77.2 +/- 25.4 vs 134 +/- 44.3, p = 0.007; 194.1 +/- 20.7 vs 170.2 +/- 17, p = 0.017, respectively). Conclusion: VEGF expression is significantly lower in placental bed biopsies of preeclamptic pregnancies.
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    The immunohistochemical evaluation of VEGF in placenta biopsies of pregnancies complicated by preeclampsia
    Akercan, F; Cirpan, T; Terek, MC; Ozcakir, HT; Giray, G; Sagol, S; Karadadas, N
    Objective The study was designed to determine the protein levels of vascular endothelial growth factor (VEGF) in the placenta biopsies of patients with preeclampsia and compare with normal controls. Design Prospective cohort study. Methods The placental biopsies were obtained from ten patients with preeclampsia and ten patients of control group at the time of delivery. Avidin-biotin-peroxidase immunohistochemistry was then performed to identify levels of VEGF protein within the tissue and a semi-quantitative method was devised to score the amount of staining present in the sample. Two histopathologists who were blinded to the groups were asked to score each sample for the intensity of staining and the number of cells stained in a randomly selected per high-power fields of each sample. The resulting H-score was computed as a product of intensity and percent of cells stained. Results The VEGF expression was significantly higher in placenta biopsies of preeclamptic patients compared to that of controls (271.2 +/- 22.65 vs. 201.9 +/- 12.33, P = 0.000). Conclusion Immunostaining of VEGF is significantly higher in placenta biopsies of patients with preeclampsia.
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    The Comparison of Cell Culture, Hybridization and Direct Flourescent Antibody Tests in Chlamydia trachomatis Diagnosis
    Akduman, E; Ecemis, T; Sagol, S; Çiçek, C; Vatansever, S; Özbakkaloglu, B
    Objective: The aim of this study was to compare the reliability of hybridization and direct fluorescent antibody tests for the diagnosis of genital Chlamydia trachomatis infections. Material and Methods: Cervical specimens from 100 infertile women were evaluated with hybridizasyon, direct fluorescent antibody tests, and cell culture method known as a gold standard, and also sensitivity, specificity, positive and negative predictive values of the three methods were compared. Results: C. trachomatis was isolated in cell cultures of 11 samples. Seven and 19 positive samples were found respectively through direct fluorescent antibody, and hybridization tests identified 7, and 19 positive samples, respectively. Direct fluorescent antibody tests demonstrated 54.5 % sensitivity, 98 % specificity, 47.4 % positive, and 94.6 % negative predictive value, while the corresponding percentages for hybridization tests were 81.8, 88.8, 47.4, and 97.5 %, respectively. Conclusion: It was concluded that a single method has not sufficient sensitivity and specificity for the establishment of a definitive diagnosis C. trachomatis infection, and the results should be confirmed by other methods the hybridization method being more rapid and effective than the other methods.