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Featured researches published by Berk Bulut.


International Journal of Gynecology & Obstetrics | 2008

Chitotriosidase and YKL‐40 in normal and pre‐eclamptic pregnancies

Riza Madazli; Mine Kucur; Altay Gezer; Ferruh K. Isman; Berk Bulut

To compare macrophage activation in normal and pre‐eclamptic pregnancies by determining YKL‐40 concentration and chitotriosidase activity in maternal and cord serum.


Journal of Obstetrics and Gynaecology | 2010

Systemic lupus erythematosus and pregnancy.

Riza Madazli; Berk Bulut; Hakan Erenel; Altay Gezer; Onur Guralp

We present a retrospective study of 42 consecutive cases of systemic lupus erythematosus (SLE) and pregnancy followed and delivered during the period 2002–2007 in our department. The mean patient age was 28.6 years and the nulliparity rate was 45.2%. Disease flare up occurred in 9.5% of patients. Lupus anticoagulants, anticardiolipin IgG and IgM antibodies were positive in 33%, 16.6% and 19% of patients, respectively. Mean gestational age at delivery was 36.9 ± 4.2 and mean birth weight was 2,750 ± 844 g. Stillbirth, fetal growth restriction, pre-eclampsia and pre-term delivery rates were 7.1%, 14.3%, 2.4% and 23.1%, respectively. Cases with uterine artery Doppler abnormalities had significantly poorer obstetric outcomes. Antiphospholipid antibodies, renal involvement and lupus activation did not have any significant influence on poor obstetric outcome. Multidisciplinary approach to the care of pregnant women with SLE is mandatory for good maternal and fetal outcomes. Uterine artery Doppler seems to be a good prognostic factor for adverse obstetric outcomes.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 2012

First-trimester maternal serum metastin, placental growth factor and chitotriosidase levels in pre-eclampsia

Riza Madazli; Berk Bulut; Abdullah Tuten; Burcu Aydin; Gökhan Demirayak; Mine Kucur

OBJECTIVE To investigate whether the serum levels of metastin and PIGF and chitotriosidase activity early in pregnancy differ in women who develop pre-eclampsia from those who remain normotensive. STUDY DESIGN A retrospective case-control study of prospectively collected data. Thirty healthy pregnant women and 31 women with pre-eclampsia were included in the study. Serum samples were collected at 11-14 weeks and stored at -70°C. Levels of metastin, PIGF and chitotriosidase activity were measured in serum from pregnant women with subsequent development of pre-eclampsia and matched controls. RESULTS Mean maternal serum metastin (1554 ± 385 pmol/L vs 1995 ± 375 pmol/L, p<0.001) and PIGF (111.9 ± 7.0 pg/mL vs 124.9 ± 3.5 pg/mL, p<0.001) levels were significantly lower and chitotriosidase activity was significantly higher (681.6 ± 248.3 nmol/mL/h vs 527.7 ± 223.1 nmol/mL/h, p<0.01) in women who subsequently developed pre-eclampsia than in those who remained normotensive. The areas under the curve equal to 0.797, 0.831 and 0.681 (p<0.001, p<0.001 and p<0.01) for metastin, PIGF, and chitotriosidase respectively were determined for the prediction of pre-eclampsia. CONCLUSIONS Metastin and PIGF levels and chitotriosidase activity are altered in the first trimester serum of women destined to become pre-eclamptic, reflecting placental dysfunction. Metastin, like PIGF, may have a potential to be used as a first-trimester biomarker of pre-eclampsia.


Journal of Obstetrics and Gynaecology | 2017

Myomectomy for intramural fibroids during caesarean section: A therapeutic dilemma

Murat Akbaş; Veli Mihmanli; Berk Bulut; Ilkbal Temel Yuksel; Gülşen Karahisar; Gökhan Demirayak

Abstract The aim of the present study was to assess the safety of myomectomy for intramural fibroids during caesarean section. A retrospective study of 63 women who underwent myomectomy during caesarean section and 63 women who underwent caesarean delivery without myomectomy was conducted. The study group was divided into subgroups according to the volume of fibroids and total incision count. The volume of fibroids, the preoperative and postoperative haemoglobin values and the difference between them, incidence of haemorrhage and blood transfusion, duration of operation and postoperative fever of patients were investigated. Duration of operation was longer (p < .001) and haemoglobin loss was higher (p = .01) in the myomectomy group. There was no difference between one incision and two incisions subgroups in terms of mean haemoglobin change (p = .068). Haemoglobin loss was higher in volume >50 cm3 group than volume <50 cm3 and control groups. These differences were statistically significant (p = .02; p = .001, respectively). Although intramural fibroids can be safely removed during caesarean section, large fibroids and extra incisions for myomectomy are risk factors for haemorrhage.


Hypertension in Pregnancy | 2017

Maternal serum autotaxin levels in early- and late-onset preeclampsia

Hakan Erenel; Nevin Yilmaz; Tayfur Çift; Berk Bulut; Işık Sozen; Berna Aslan Çetin; Altay Gezer; Hakan Ekmekci; Baris Kaya; Abdullah Tuten

ABSTRACT Purpose: We aimed to compare the serum autotaxin levels in early- and late- preeclamptic and healthy pregnant patients at a university hospital. Methods: A total of 55 singleton preeclamptic women who delivered at Cerrahpasa Medical Faculty were included in the study. The patients were subdivided into two groups: early-onset preeclampsia (n = 31) and late-onset preeclampsia (n = 24). Demographic and clinical data were compared between early-onset and late-onset preeclamptic patients. The control group was composed of 32 healthy pregnant patients. Results: The mean autotaxin levels were 1.16 ± 0.97 and 0.7 ± 0.35 ng/ml in the early- and late-onset preeclampsia groups, respectively. Autotaxin levels were significantly higher in early-onset preeclampsia group compared with late-onset preeclampsia group. Autotaxin levels were found to be significantly higher in preeclamptic patients compared with control group. Serum autotaxin levels showed a significant positive correlation with maternal systolic, diastolic blood pressures and uric acid levels. Conclusion: Autotaxin might be a promising marker for detecting early-onset preeclampsia. However, further studies are necessary to confirm this hypothesis.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 2017

Elevated basal progesterone levels are associated with increased preovulatory progesterone rise but not with higher pregnancy rates in ICSI cycles with GnRH antagonists

Mehmet Erdem; Ilknur Mutlu; Berk Bulut; Ahmet Erdem

OBJECTIVE To ascertain the association between basal progesterone (P) levels and the occurrence of preovulatory progesterone rise (PPR) and clinical pregnancy rates (CPRs) in ICSI cycles with GnRH antagonists. STUDY DESIGN Serum P levels of 464 patients were measured on day 2 and day of hCG of cycles. Cycles with basal P levels>1.6ng/mL were cancelled. All embryos were cryopreserved in cycles with P levels≥2ng/mL on the day of hCG. The primary outcome measures were the incidence of PPR (P>1.5ng/mL) and CPR with regard to basal P. RESULTS Basal P levels were significantly higher in cycles with PPR than in those without PPR (0.63±0.31 vs. 0.48±0.28ng/mL). Area under the curve for basal P according to ROC analysis to discriminate between elevated and normal P levels on the day of hCG was 0.65 (0.58-0.71 95% CI, p<0.01). The cut-off value for basal P levels that best discriminates between cycles with and without PPR was 0.65ng/mL. Cycles with basal P levels above 0.65ng/mL had a significantly higher incidence of PPR (30.9% vs. 13.5%) but similar clinical and cumulative pregnancy rates (38.8% vs. 31.1% and 41.7% vs. 32.6%, respectively) in comparison to cycles with basal P levels below 0.65ng/mL. In multivariate regression analysis, basal P levels, LH level on the first day of antagonist administration, and estradiol levels on the day of hCG trigger were the variables that predicted PPR. CONCLUSION Basal P levels were associated with increased incidence of PPR but not with CPR.


Gynecology & Obstetrics | 2015

Fetal Abdominal Cysts: Prenatal Diagnosis and Management

Abdullah Serdar Acikgoz; Abdullah Tten; Berk Bulut; Mahmut Oncul; Şerife Eskalen; Burcu Çakmak Dinçgez; Ibrahim Adaletli; Riza Madazli; Ali Benian

Objective: Fetal intra-abdominal cystic masses are quite rare entities and their differential diagnosis is particularly perplexing. These masses encompass many different pathological cysts originating from almost every organ in the abdomen. In female fetuses, ovarian cysts are the primary cause. In our study, we investigated the techniques used in diagnosis, accuracy of methods and management strategies, and tried to summarize postnatal outcomes. Materials and methods: A total of 29 cases were evaluated retrospectively by reviewing their ultrasonography (USG) results, magnetic resonance imaging (MRI) scans, interventions in perinatal period, postnatal follow up and surgical outcomes. Results: Twenty nine (25 female 4 male) cases were included in the study. Mean gestational week at diagnosis was 30,0 ± 6,4 for ovarian cysts and 24,7 ± 7,5 for non-ovarian cysts. Mean diameter of cysts was 41,7 ± 25,4 mm. 17 cysts (56%) were of ovarian origin, 6 (20,7%) were mesenteric cysts, 3 of them (10.3%) originated from kidneys and 3 (10.3%) of the cysts turned out to be choledochal-subhepatic cysts. In postnatal period, 8 cases required surgery which was ovarian and mesenteric cysts. In two incidences, gonads had to be removed. In differential diagnosis of masses, diagnostic accuracy of USG was calculated as 72,4% while that of MRI was 87.5%. Conclusion: Fetal abdominal cysts are seen more frequently in female fetuses and recognized relatively later during the pregnancy. Aspiration of the cysts in masses with larger diameters may be useful in reducing frequency of complications leading to gonad losses. Most common non-ovarian cysts are mesenteric cysts which also cause complications and require surgical interventions. Both USG and MRI are highly accurate imaging techniques in cases with adnexial masses. They have roughly the same accuracy in differential diagnosis of fetal abdominal cystic lesions.


Journal of Maternal-fetal & Neonatal Medicine | 2018

Serum caveolin-1 levels in patients with preeclampsia

Tayfur Çift; Aydogan Mathyk Begum; Berna Aslan Çetin; Hakan Erenel; Abdullah Tuten; Berk Bulut; Nevin Yilmaz; Hakan Ekmekci; Altay Gezer

Abstract Aim: The expressions of caveolin-1 have only been examined in the placental tissue of patients with preeclampsia and were reported to be low. Therefore, we decided to investigate the maternal serum levels of caveolin-1 in patients with preeclampsia. Material and methods: This cross-sectional study was conducted including 87 pregnant women; 32 with normal pregnancy and 55 with preeclampsia. Maternal serum levels of caveolin-1 were measured by using enzyme-linked immunosorbent assay kit (ELISA). Results: The mean serum caveolin-1 level was significantly lower in women with preeclampsia (PE) compared with the control group (11.48 ± 0.92 versus 12.94 ± 1.36 ng/ml) and being lowest in the early onset PE group (11.24 ± 0.74 ng/ml). Serum caveolin-1 concentrations did not correlate with maternal age and BMI. However, caveolin-1 concentrations were negatively correlated with systolic blood pressure (r = –0.467, p = .001) and diastolic blood pressure (r = –0.441, p = .001) as well as with umbilical artery resistance index (r = –0.275, p = .01). Conclusion: Maternal serum caveolin-1 levels are significantly lower in patients with PE than controls. The serum caveolin-1 levels inversely correlate with blood pressure and umbilical artery Doppler parameters.


Journal of Maternal-fetal & Neonatal Medicine | 2018

Serum collectrin levels in patients with early- and late-onset preeclampsia

Berna Aslan Çetin; Begum Aydogan Mathyk; Tayfur Çift; Abdullah Tuten; Berk Bulut; Nevin Yilmaz; Hakan Erenel; Hakan Ekmekci; Altay Gezer

Abstract Aim: The aim of this study is to investigate the maternal levels of collectrin in early-onset preeclampsia (EOPE) and late-onset preeclampsia (LOPE). To assess the correlation between serum collectrin levels and blood pressure in humans. Material and methods: This cross-sectional study was conducted including 79 pregnant women, 27 with normal pregnancy, 30 with EOPE and 22 with LOPE. Maternal serum levels of collectrin were measured by using enzyme-linked immunosorbent assay kits. Results: The mean serum collectrin level was significantly lower in women with PE compared with the control group (8.49 ± 3.12 ng/ml (EOPE), 9.69 ± 3.01 ng/ml (LOPE) versus 11.51 ± 4.33 ng/ml) and was found to be the lowest in the EOPE group (8.49 ± 3.12 ng/ml). The mean serum urea and uric acid levels were significantly higher in the PE group than the control group. Serum collectrin concentrations did not correlate with maternal age, BMI and serum creatinine levels. However, collectrin concentrations were negatively correlated with systolic blood pressure (r = −0.284, p = .011) and diastolic blood pressure (r = −0.275, p = .014) as well as with maternal serum urea (r = −0.269, p = .017) and uric acid (r = −0.219, p = .049) concentrations. Conclusion: Maternal serum collectrin levels are significantly lower in patients with preeclampsia than in the control group. There is an inverse correlation between serum collectrin levels and blood pressure.


Ginekologia Polska | 2017

Adolescent pregnancies: complications, birth outcomes and the possible solutions

Tayfur Çift; Engin Korkmazer; Muzaffer Temur; Berk Bulut; Barış Korkmaz; Onur Ozdenoğlu; Cem Akaltun; Emin Üstünyurt

OBJECTIVES In this study we aim to evaluate antenatal, perinatal and postnatal outcomes and complications of adolescent pregnancies, as well as to discuss the social and psychological consequences of these pregnancies. MATERIAL AND METHODS We compare a total of 243 pregnant women at age 14-18 years to a vast control group at age 19-36 who all delivered at Bursa Yüksek Ihtisas Training and Research Hospital between years 2005-2014. RESULTS Antenatal care (folic acid supplementation, pre-conception counseling) was significantly higher in adolescent pregnancy group. Unplanned pregnancy rate was significantly higher in in study group (p < 0.001). Preterm delivery (before 37th week) ratio was statistically higher in pregnancy complications. CONCLUSIONS Adolescent pregnancy is a social entity which should be regulated and prevented by legal measures. Planned pregnancies should be promoted and the public should be educated and informed about the Hazards of adolescent pregnancies. Press institutions, public broadcasting services support the efforts to decrease adolescent pregnancies.

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