Browsing by Author "Kucukbas, Gokce Naz"

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Comparison of Fetal and Maternal Tissue Elasticity Between Euploid and Aneuploid Pregnancies by Shear Wave Elastography
(Wiley, 2023) Kucukbas, Gokce Naz; Soylu, Abdullah Ruhi
AimB-mode ultrasonography utilized for fetal screening of common trisomies is referred to as a genetic sonogram and includes determining major abnormalities and soft markers such as hypoplastic nasal bone and increased thickness of the nuchal fold. Elastography is a novel ultrasound technique giving information about tissue stiffness used for diagnosing cancer, transplant rejection, and organ fibrosis. This study aimed to determine via shear wave elastography (SWE) whether euploid and aneuploid fetal soft marker tissues vary in stiffness. MethodsThe participants were all singleton pregnancies between 19 and 23 weeks of gestation; 35 euploid and 14 aneuploid fetus pregnancies were enrolled. Fetal bowel, kidney, liver, nasal bone, nuchal fold, placenta, and myometrium were investigated with SWE using acoustic radiation impulse force. Images were analyzed with a novel software calibrated and written by us using MATLAB. Statistical analysis was completed with the SPSS Program. Shapiro-Wilk normality distribution analysis, Student's t-test, and Mann-Whitney U methods were used. ResultsThe mean shear wave speed of fetal nasal bone was significantly lower in aneuploid fetuses. There was no difference between other tissues in mean shear wave velocity. ConclusionsEuploid and aneuploid fetuses have different elastic properties of the nasal bone and this may have a role in differentiating aneuploid fetuses noninvasively.
Comparison of Maternal B12 and Folate Status in Prenatally Diagnosed Neural Tube Defects: a Case-Control Study
(Istanbul Univ, Fac Medicine, Publ off, 2020) Turkyilmaz, Gurcan; Kucukbas, Gokce Naz; Erturk, Emircan; Turkyilmaz, Esebnem; Karaaslan, Onur; Sahin, Hanim Guler
Objective: To evaluate folate and B12 levels in fetuses who had been diagnosed with neural tube defects (NTDs) and healthy fetuses in Van Yuzuncu Yil University and Van State Education and Research hospitals between March-August 2019. Material and Method: Thirty-eight pregnant women who had been diagnosed with fetuses with NTDs prenatally, and 40 healthy controls were recruited. The chi-square test and Mann-Whitney U test were employed to compare variables. Results: None of the women had taken folic acid preconceptionally in the NTD group. However, 4 (10%) women had taken folic acid supplementation in the preconception period in the control group, and this was significantly different among the groups (p=0.04). The women who had taken folic acid in the first trimester of pregnancy were 9 (23.6%) and 32 (80%) in cases and controls, respectively, and it was significantly different (p=0.01). The mean B12 level was 248.7 +/- 65.4ng/ml in cases and 239.3 +/- 27.5 ng/ml in controls, and there was no significance between the groups (p=0.78). The mean folate level was 9.6 +/- 4.8 ng/ml in cases and 9.8 +/- 3.9 ng/ml in controls, and it was similar between the groups (p=0.62). Conclusion: We did not show difference in folate and B12 levels. However, folic acid intake in preconception or in the first trimester of pregnancy was significantly higher in women who have healthy babies compared to the NTD group.
Maternal Plasma Endocan Levels in Intrauterine Growth Restriction
(Taylor & Francis Ltd, 2022) Kucukbas, Gokce Naz; Kara, Ozgur; Yuce, Deniz; Uygur, Dilek
Objectives: Intrauterine growth restriction (IUGR) is diagnosed when the estimated fetal weight remains below the 10th percentile of gestational age based on pathological restriction of growth and/or accompanying Doppler abnormalities. Endothelial dysfunction is a common pathogenetic pathway underlying IUGR etiology. Endocan (ESM-1) is a novel marker of endothelial dysfunction and inflammation found in the maternal circulation. This study was designed to compare plasma endocan levels between pregnancies complicated with IUGR and a control group. Study design: Forty-four pregnancies complicated with IUGR and 47 healthy pregnancies were included. Maternal plasma endocan levels were detected by ELISA. Parametric data was studied by Student's t-test. Mann-Whitney U-test was used in analyzing non-parametric data. Categorical variables underwent chi-square test. ROC analysis was performed to define the cutoff value of endocan in detecting IUGR. Spearman correlation test was performed. Results: Maternal plasma endocan level varied significantly between IUGR and healthy pregnancies and was 1.8 fold higher in the IUGR group (793.0 (IQR:544.4-1896.0) ng/L vs. 441.8 (IQR: 408.3-512.4) ng/L, p < .001). There was a weak negative correlation between endocan level and 5th and 10th minute APGAR Scores (r = -0.256; p = .015 and r = -0.215; p = .042, respectively), a weak positive correlation with umbilical artery pulsatility index, and a moderate negative correlation with cerebroplacental ratio (r = 0.394; p < .001 and r = -0.459; p < .001, respectively). Conclusions: There was a significant difference between endocan levels of IUGR and healthy pregnancies. Further studies might be designed to investigate the performance of endocan in predicting neonatal outcomes for pregnancies complicated with IUGR.
Plasma Endocan Levels in Early and Late-Onset Preeclampsia
(Taylor & Francis inc, 2021) Kucukbas, Gokce Naz; Sanhal, Cem Yasar; Uygur, Dilek
Background: Preeclampsia (PE) may represent an inflammatory process. Endocan (ESM-1) is a marker of endothelial inflammation. We compared plasma endocan levels between PE and control groups and between early and late-onset PE. Study design: Maternal plasma endocan levels were measured in 41 preeclampsia (PE) pregnancies - 25 early-onset (<34 weeks); 16 late-onset (>= 34 weeks), and 37 non-complicated pregnancies (22 matched with early-onset PE, 15 with late onset). Results: There was no significant differences between plasma endocan levels of patients with PE and control group (468.8(IQR: 169.7)ng/L vs 462.4(IQR: 321.1)ng/L, p > 0.05), between early and late-onset PE (458.8(221.8)ng/L vs 469.8(122.6)ng/L, p > 0.05), between early-onset PE and corresponding control group (458.8(221.8)ng/L vs 506.2(1481.9)ng/L, p > 0.05), or late-onset PE and corresponding control group (469.8(122.6)ng/L vs 451.0(85.1)ng/L, p > 0.05). Conclusion: There was no significant difference between endocan levels of early or late-onset PE compared with their corresponding control groups, nor between early and late-onset preeclampsia groups.
The Relationship Between Fetal Central Nervous System Malformations and Modified Myocardial Performance Index
(Springernature, 2023) Kucukbas, Gokce Naz; Bagci, Mustafa; Sahin, Hanim Guler
Introduction: Fetal ventriculomegaly, the most commonly identified abnormality of the fetal central nervous system (CNS), has been associated with elevated levels of the modified myocardial performance index (mMPI). However, the impact of other CNS pathologies on mMPI has not yet been evaluated. This study aimed to investigate whether there were changes in the myocardial performance index of fetuses with CNS pathologies without congenital heart diseases.Methods: A total of 126 singleton pregnant women were included in this study. Sixty-three fetuses had fetal CNS abnormalities of acrania, anencephaly, encephalocele, Dandy-Walker malformation, hydrocephalus, and meningocele. The control group consisted of 63 healthy and gestational age-matched fetuses. All ultrasonographic examinations were done in the second trimester of gestation. The data related to the characteristics of pregnant women were evaluated, and fetal left ventricular mMPI was obtained by ultrasound scan.Results: The study and the control group participants were not significantly different by means of pregnancy characteristics. The mean mMPI was higher in the fetal CNS malformation group compared to the control groups (0.39 +/- 0.02 vs. 0.45 +/- 0.04, P<0.001). The mean mMPI value was similar for fetuses with both closed and open calvarium defects of fetal CNS malformation.Conclusion: Fetal CNS anomalies may be associated with prenatal cardiac dysfunction. Moreover, this relationship might be independent of the type of fetal CNS malformation, whether a closed or open calvarium defect.
Role of Affective Temperaments on Decision-Making Processes of Preferring Invasive Karyotype Tests
(Cukurova Univ, Fac Medicine, 2021) Arslan, Erol; Kucukbas, Gokce Naz; Akcabay, Cigdem; Gulbahar, Duru Saygin; Sucu, Mete
Purpose: The aim of this study was to evaluate the relationship between patient temperament and preference for invasive prenatal tests. Materials and Methods: This was a prospective study of 337 pregnant women who had increased risk of having a fetus with Down syndrome. Their temperament profile was determined by using the temperament evaluation of TEMPS-A. Women were grouped as accepting (study) or declining (control) to perform an invasive test. Results: 284 pregnancies were included in the final analyzes. The study group had more likely employed and had a higher level of education level. There was no predominant temperament in 247 (87%) women. Hyperthymic temperament had the highest scores (11.2 +/- 4.1) among other four temperament types. Study group patients had lower scores for anxious and depressive temperaments compared with control groups. Conclusion: Women who had a less anxious or depressive personality were more likely to prefer an invasive prenatal test. In addition, employment and higher educational status were correlated with undergoing invasive prenatal testing.
Use of Virtual Touch Tissue Quantification Elastography Technique in Fetal Lung Maturation
(Lippincott Williams & Wilkins, 2023) Arslan, Harun; Kucukbas, Gokce Naz; Turkoglu, Saim; Akdemir, Zulkuf; Yokus, Adem; Gunduz, Ali Mahir; Sahin, Hanim Guler
This study is an analysis of fetal lung stiffness by virtual touch tissue quantification (VTTQ) elastography to predict fetal lung maturation. Evaluation of fetal lungs was first performed in B mode, and fetal lungs were analyzed at 3 different periods at third trimester in each pregnant woman, at 28 to 31, 32 to 36, and 37 to 41 weeks. Fetal lung elastography was performed at regions with the least acoustic shadow and far from ribs and heart. Each fetal lung assessment were done by taking mean lung stiffness obtained by measuring stiffness of both left and right fetal lungs. T test analysis showed no significant difference in fetal lung stiffness between male and female fetuses among 3 gestational periods. Analysis of variance was performed to evaluate fetal lung stiffness of the fetuses at 3 different gestational periods (28-31, 32-36, and 37-41 weeks). This analysis showed significant difference (P < 0.01). Duncan multiple comparison analysis did not show significant difference in fetal lung stiffness between 28 and 31 weeks and 32 and 36 weeks, whereas fetal lung stiffness of fetuses at 37 to 41 weeks were significantly greater (P < 0.01). This study is first step to analyze fetal lung maturation noninvasively using VTTQ elastography technique by measuring fetal lung stiffness.