Browsing by Author "Doster, Y."

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Maternal adiponectin and visfatin concentrations in normal and complicated pregnancies
(IMR Press, 2013) Demir, Bilge Çetinkaya; Atalay, Mehmet Aral; Özerkan, Kemal; Doster, Y.; Ocakoğlu, Gökhan; Küçükkömürcü, Şakir; Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; AAH-9834-2021; AAH-5180-2021; AAH-9791-2021; 36923039100; 53863297800; 6603345841; 55623210600; 15832295800; 6507291599
Objective: To evaluate the role of adiponectin and visfatin in the pathophysiology of pre-eclampsia (PE) and how their concentrations correlate with the severity of the disease and neonatal outcomes. Study Design: A prospective case-control study was carried out in 52 preeclamptic and 28 healthy pregnant women during the third trimester. The maternal plasma concentrations of adiponectin and visfatin were determined. Neonatal outcomes were also recorded. Results: Mean maternal plasma adiponectin concentrations in healthy pregnant women did not differ significantly from those of mild PE and severe PE groups. The plasma adiponectin levels of PE patients with small for gestational age (SGA) and those without SGA did not differ significantly, but the median plasma visfatin concentration of patients with SGA fetus was significantly higher if the patient was preeclamptic (p = 0.036). Conclusion: The severity of preeclampsia did not change the plasma levels of adiponectin and visfatin, but the median plasma visfatin concentration of patients with SGA fetuses were significantly higher if the patient was preeclamptic. Altered levels of adipocytokines strongly imply that the regulation of adipocytokines in PE is different and more complex compared to that in healthy pregnancy.
Polymorphisms of glutathione-s-transferase M1, T1, and P1 genes in endometrial carcinoma
(IMR Press, 2013) Özerkan, Kemal; Atalay, Mehmet Aral; Yakut, Tahsin; Doster, Y.; Yılmaz, Emel; Karkucak, Mutlu; Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Bölümü.; Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Genetik Anabilim Dalı.; 0000-0002-3894-1231; AAH-9791-2021; ABI-5648-2022; 6603345841; 53863297800; 6602802424; 55623210600; 22037135100; 35388323500
Objective: To investigate the polymorphism rates and possible roles of glutathione-s-transferase M1, T1, and P1 gene polymotphisms in the predisposition to endometrial cancer in Caucasian women. Materials and Methods: Serum samples and medical records were collected from 53 Caucasian women with newly diagnosed endometrial cancer and 67 women of the same race without any known history of cancer. Multiplex polymerase chain reaction (PCR) analysis was used to assess glutathione-s-transferase M1 (GSTM1) and T1 gene polymorphisms. Polymerase chain reaction - restriction fragment length polymorphism (PCR-RFLP) method was used in salvage of GSTP1 gene polymorphism. Results: Frequencies of GSTM1 and GSTT1 null genotypes were not significantly different between the controls and patients with endometrial cancer (56.7% vs 52.8%, p = 0.671; 32.8% vs 26.4%, p = 0.574, respectively). The authors were not able to demonstrate any association between neither GSTP1 genotypes nor allele frequencies and endometrial carcinoma in the population studied (p = 0.310, p = 0.318, respectively). Moreover, no significant association could be demonstrated with GSTM1 and GSTT1 polymorphisms and clinical stages of endometrial cancer. Nevertheless, there was a significant difference between the frequencies of GSTP1 AA and GG genotypes in relation to Stage I disease when compared with advanced stages of endometrial carcinoma (p = 0.03). In addition, no association was found between polymorphisms of GST suspergene family and non-endometrioid type endometrial carcinomas. Conclusion: These results suggest that GSTT1, GSTM1, and GSTP1 polymorphisms are not associated with endometrial cancer in the Caucasian population.
The possible role of serum leptin in preeclampsia
(IMR Press, 2016) Doster, Y.; Demir, Bilge Cetinkaya; Atalay, Mehmet Aral; Durusoy, Emine Emsal; Kuçükkomürcü, Şakir; Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; AAH-9834-2021; 36923039100; 53863297800; 55836312500; 6507291599
Background: It is theorized that adipokines play a critical role in the pathophysiology of preeclampsia, particularly with their pro-inflammatory and inflammatory features. Aim: To investigate serum leptin levels in pregnancies complicated with preeclampsia and severe preeclampsia. Materials and Methods: Maternal serum leptin levels were analyzed by solid phase enzyme amplified sensitivity immunoassay (EASIA) method in 23 patients with mild preeclampsia, 29 patients with severe preeclampsia, and 28 healthy pregnant controls. Results: Mean serum leptin levels did not differ statistically between patients with mild preeclampsia, severe preeclampsia, and the controls (10.77 ng/ml, 13.40 ng/ml, and 8.43 ng/ml, respectively). Also, there was no relationship between serum leptin levels and the gestational ages of the participants. Discussion: Serum leptin levels are not associated with preeclampsia. Leptin measurements are not affected with the gestational age. The role of leptin in the pathophysiology of preeclampsia should be evaluated cautiously.