Browsing by Author "Dogan, Ilkay"

Now showing 1 - 4 of 4

Analyses of Interleukin-6, Presepsin and Pentraxin-3 in the Diagnosis and Severity of Late-Onset Preeclampsia
(Taylor & Francis Ltd, 2022) Ovayolu, Ali; Turksoy, Vugar Ali; Ovayolu, Gamze; Ozek, Murat Aykut; Dogan, Ilkay; Karaman, Erbil
Introduction: The etiology/pathophysiology of preeclampsia remains an enigma. Maternal inflammation (humoral and cellular) is a key factor in the etiology of late-onset preeclampsia (L-PrE). Presepsin is split out from the phagocytes membranes after phagocytosis. It is known as a novel inflammation marker. To our knowledge, this is the first study in literature in English to investigate maternal blood concentrations of presepsin in preeclampsia and healthy pregnant women. Methods: We examined maternal plasma interleukin-6, presepsin and pentraxin-3 concentrations in pregnant women with (n = 44) and without L-PrE (n = 44). These three inflammatory markers concentrations measured using enzyme-linked immunosorbent assays were compared. Results: The mean maternal age and gestational age at sampling are similar in the both groups (p >= .05). Interleukin-6, presepsin and pentraxin-3 concentrations differed between the groups (p < .05). There was no difference between the three inflammatory markers concentrations in patients with mild (22 patients) and severe (22 patients) preeclampsia in L-PrE (p >= .05). A significant discriminative role of interleukin-6, presepsin and pentraxin-3 for presence of L-PrE, with cutoff values of 39.74 pg/mL, 309.88 mg/L and 34.96 ng/mL, respectively, were reported in a ROC curve analysis. When the patients with and without small for gestational age infants (12 patients and 76 patients, respectively) were compared, it was determined that there was no differences between the interleukin-6, but there were differences between the presepsin and pentraxin-3 concentrations (p = .016, p = .008, respectively). Conclusion: Lower concentrations of interleukin-6/presepsin and higher concentrations of pentraxin-3 were associated with the development of preeclampsia. Further investigations of inflammatory/immunity markers in pregnancy are required and may ultimately lead to novel therapeutic approaches to treat complications of pregnancy.
Analyses of Maternal Plasma Cadmium, Lead, and Vanadium Levels in the Diagnosis and Severity of Late-Onset Preeclampsia: a Prospective and Comparative Study
(Taylor & Francis Ltd, 2022) Ovayolu, Ali; Turksoy, Vugar Ali; Gun, Ismet; Karaman, Erbil; Dogan, Ilkay; Turgut, Abdulkadir
Introduction: Cadmium, lead, and vanadium, important pollutants produced from anthropogenic activities, have been suggested to be embryotoxic and fetotoxic in many studies. However, the causes of preeclampsia are little known and heavy metals merit further investigation. We tested whether late-onset preeclampsia (L-PrE) was associated with exposure to these metals. Methods: This study was designed to determine maternal plasma cadmium, lead, and vanadium concentrations in women with L-PrE (n = 46) compared with those of normotensive women (n = 46). The concentrations of the metals were measured using inductively coupled plasma-mass spectrometry and compared. Results: The groups were matched for maternal age, gestational age, and gravidity (p >= 0.05). Vanadium concentrations differed between the groups (p = 0.007). In contrast, there were no significant differences in the concentrations of cadmium and lead between the groups (p >= 0.05). There was no difference between the concentrations of the metals in patients with mild (n = 23) and severe (n = 23) preeclampsia in L-PrE (p >= 0.05). A significant discriminative role of vanadium for the presence of L-PrE, with a cutoff value of 1.84 mu g/L, was found in ROC curve analysis. When the patients with and without small-for-gestational-age infants were compared (n = 12, and n = 80, respectively), it was determined that there were no differences between cadmium, lead, and vanadium concentrations (p >= 0.05). Conclusion: Lower levels of vanadium might be associated with the development of L-PrE. Our findings require further investigation in other populations.
Analyses of Soluble Endoglin and Matrix Metalloproteinase 14 Using Enzyme-Linked Immunosorbent Assay in the Diagnosis and Assessment of Severity of Early- and Late-Onset Pre-Eclampsia
(Galenos Yayincilik, 2021) Ovayolu, Ali; Ovayolu, Gamze; Karaman, Erbil; Guler, Selver; Dogan, Ilkay; Yuce, Tuncay
Objective: Abnormal trophoblastic invasion and impaired placentation have a crucial role in the etiopathogenesis of preeclampsia (PrE). Trophoblastic cells are involved in invading the maternal decidua and remodelling of the spiral arteries with matrix metalloproteinase-14 (MMP-14). MMP-14 cleavage of endoglin releases its extracellular region, the soluble form of endoglin (s-ENG), into the maternal circulation. In PrE, there is a relationship between endothelial dysfunction and s-ENG concentration. The aim was to determine and compare the serum levels of s-ENG and MMP-14 in different groups of PrE patients and healthy subjects. Material and Methods: The study included 30 patients with late-onset preeclampsia (L-PrE) (group 1; gestational age >= 34 weeks), 33 patients with normal pregnancy (group 2; gestational age >= 34 weeks), 31 patients early-onset preeclampsia (E-PrE) (group 3; gestational age < 34 weeks), and 31 patients with normal pregnancy (group 4; gestational age <34 weeks). s-ENG and MMP-14 concentrations measured using enzyme-linked immunosorbent assays were compared. Results: In all groups, MMP-14 concentrations decreased with increasing gestational age. s-ENG concentrations were highest in the E-PrE group. In groups 1 and 3, 29 had mild PrE while 32 suffered severe PrE and s-ENG concentrations did not differ between mild and severe preeclampsia (p=0.133). However, there was a significant difference in MMP-14 concentration comparing mild with severe PrE (3.11 +/- 0.61 vs 3.54 +/- 1.00; p=0.047, respectively). There was no correlation between s-ENG and MMP-14 concentrations. Conclusion: MMP-14 and s-ENG concentrations can be predictive biomarkers for the diagnosis of PrE. Maternal serum MMP-14 concentration may be a biomarker for determining the severity of PrE.
Preterm Erken Membran Rüptürü ile Komplike Olan Gebeliklerde Seçilen Eser Elementler ve Ağır Metallerin Maternal Serumdaki Seviyeleri: Prospektif Vaka-kontrollü Çalışma
(2021) Ovayolu, Ali; Kolusarı, Ali; Dogan, Ilkay; Bostancıerı, Nuray; Turksoy, Vugar Ali; Güler, Selver
Amaç: Alüminyum(Al), krom(Cr), manganez(Mn), kobalt(Co), nikel(Ni), bakır(Cu), çinko(Zn), arsenik(As), molibden(Mo), kadmiyum(Cd), kalay(Sn), antimon(Sb), civa(Hg) ve kurşun(Pb) isimli eser element ve ağır metallerin maternal serum seviyelerini, preterm erken membran rüptürü (pP-ROM) ile komplike olmuş gebelerde ve sağlıklı gebelerde karşılaştırmaktır. Gereçler ve Yöntem: pP-ROM ile komplike 55 gebeden oluşan çalışma grubu ile, anne yaşı ve gebelik haftası açısından benzer olan 60 sağlıklı gebenin (kontrol grubu) Al, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Cd, Sn, Sb, Hg ve Pb serum düzeyleri ölçüldü. Her iki gruptaki eser elementlerin ve ağır metallerin maternal serum seviyeleri, indüktif olarak eşleşmiş plazma kütle spektrometrisi kullanılarak ölçülmüş ve karşılaştırılmıştır. Bulgular: Anne yaşı, vücut kitle indeksi, gebelik sayısı, doğum sayısı ve gebelik haftaları ortalamaları incelendiğinde, iki grupta anlamlı bir fark görülmedi (p≥0.05). Ortalama serum beyaz kan hücresi seviyesi, pP-ROM grubunda sağlıklı kontrollerden daha yüksekti (sırasıyla, 12.2 ± 3.5 LL / mL vs 10.1 ± 2.6 LL / mL; p: 0.001). Ortalama serum C-reaktif protein düzeyi, pP-ROM grubunda sağlıklı kontrollerden daha yüksekti (sırasıyla, 0.99 ± 1.47 mg / L'ye karşılık 0.40 ± 0.27 mg / L; p: 0.003). Ayrıca, ortalama doğum ağırlığı, pP-ROM grubunda sağlıklı kontrollere göre anlamlı derecede düşüktü (sırasıyla 1859 ± 567 gram, 3209 ± 471 gram; p: 0.001). Gruplar arasında Al, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Cd, Sn, Sb, Hg ve Pb ortalama maternal serum düzeyleri açısından anlamlı fark bulunmadı (p≥0.05). Sonuç: Maternal serumda ölçülen bu seçilmiş eser elementler ve ağır metaller, pP-ROM'un patogenezinde önemli gözükmemektedir.