Pelin Ocal
Istanbul University
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Publication
Featured researches published by Pelin Ocal.
Australian & New Zealand Journal of Obstetrics & Gynaecology | 2005
Ismail Cepni; Pelin Ocal; Sanli Erkan; Funda Salihoglu Saricali; Hande Akbas; Fuat Demirkiran; Mehmet Idil; Tugan Bese
Aims: To determine whether performing transvaginal sonography (TVS) and saline infusion sonography (SIS) before hysteroscopy could reduce the number of diagnostic hysteroscopies performed for the evaluation of uterine cavity abnormalities.
Acta Obstetricia et Gynecologica Scandinavica | 1997
Ismail Cepni; Tugan Bese; Pelin Ocal; Erdal Budak; Mehmet Idil; M. Feridun Aksu
Background.The purpose of this prospective clinical study was to determine and evaluate the prognostic value of secondary yolk sac diameter of the embryo on pregnancy outcome.
European Journal of Obstetrics & Gynecology and Reproductive Biology | 2004
Mehmet Idil; Ismail Cepni; Gülten Demirsoy; Pelin Ocal; Funda Salihoğlu; Hülya Şenol; Feyhan Elibol; Tulay Irez
OBJECTIVE(S) To compare granulosa cell apoptosis in patients with unexplained infertility and tubal factor. Accelerated granulosa cell apoptosis may be the cause of unexplained infertility. STUDY DESIGN Setting was IVF-ET Unit of Cerrahpasa Medical Faculty, Istanbul University. GnRH analogs and gonadotropins were used for ovulation induction in patients with unexplained infertility (n=15) and tubal factor (n=15) undergoing in vitro fertilization and embryo transfer (IVF-ET) procedures. Following HCG injection and follicular aspiration, apoptosis of granulosa cells was assessed using the in situ DNA nick end labelling method and apoptosis rate was further determined by flow cytometry. Apoptosis rates were compared between two groups. Mann-Whitneys U-test and Students t-test were used for statistics. RESULTS Apoptosis rate was significantly higher in the unexplained infertility group (33.20 +/- 35.62% versus 10.10 +/- 17.23%). CONCLUSION(S) Granulosa cell apoptosis seems to have a role in the etiology of unexplained infertility.
Reproductive Medicine and Biology | 2011
Sezai Sahmay; Meral Cetin; Pelin Ocal; Semih Kaleli; Hülya Senol; Fatih Birol; Tulay Irez
PurposeTo evaluate the clinical value of day 3 serum anti-Müllerian hormone (AMH) compared with day 3 serum follicle-stimulating hormone (FSH) and human chorionic gonadotropin (hCG) day estradiol (E2) levels and antral follicle count (AFC) in the prediction of poor ovarian response in controlled ovarian hyperstimulation (COH).MethodsAMH, FSH and AFC on day 3 as well as hCG day E2 levels were determined in 164 subjects. Receiver operating curve analyses and area under curves (AUC) of the study parameters were performed. Predictive values of the levels of day 3 AMH, FSH, AFC, and hCG day E2 as clinical parameters of ovarian response to COH were studied.ResultsThirty-eight women were defined as poor responders. The day 3 AMH and hCG day E2 levels and AFC of normal responders were significantly higher than those of the poor responders. In predicting poor response, the AUC of day 3 AMH level was significantly higher than that of day 3 FSH level but was similar to the hCG day E2 level. Day 3 AMH, FSH and hCG day E2 levels and AFC were found to predict a poor response. Day 3 AMH and hCG day E2 levels were more predictive compared with day 3 FSH level and AFC. The cut-off level of AMH was ≤2 with a sensitivity of 78.9% and a specificity of 73.8%.ConclusionDay 3 AMH has the ability to predict a poor response to COH and it is more predictive than day 3 FSH and AFC.
Archives of Gynecology and Obstetrics | 2007
Pelin Ocal; Sanli Erkan; Ismail Cepni; Mehmet Idil
ObjectivesTo report a case of tubal heterotopic pregnancy (HP) treated conservatively with transvaginal ultrasound-guided aspiration and instillation of hyperosmolar glucose.MethodsAspiration of the tubal ectopic pregnancy and hyperosmolar glucose instillation was performed with a 16-gauge needle under transvaginal ultrasound guidance.ResultsUnruptured tubal HP with positive cardiac activity was treated successfully without any further interventions, and intrauterine pregnancy has reached full-term without any complications.ConclusionsEarly diagnosis of this life-threatening condition is the key to its successful treatment. Transvaginal ultrasound-guided aspiration and hyperosmolar glucose injection can be safely performed for the treatment of unruptured tubal HP.
Chemotherapy | 2003
Hüseyin Çakan; Erdal Polat; Bekir Kocazeybek; Pelin Ocal; Ismail Cepni; Mustafa Aslan; Funda Salihoğlu; Kemal Altas
In this study, a total of 647 vaginal discharge samples were examined. Ureaplasma urealyticum growth was seen in 68 samples (10.5%). The antibiotic sensitivity of 30 types of U.urealyticum was determined with the E-test and agar dilution method. With the agar dilution method, all types were sensitive to ciprofloxacin and ofloxacin (MIC 0.94 µg/ml), tetracycline (MIC 0.125 µg/ml) and doxycycline (MIC 0.125 and 0.190 µg/ml). Furthermore, with the agar dilution method, 18 types (60%) were resistant to roxithromycin and 12 (40%) were sensitive (MIC 12 µg/ml); 3 types (10%) were resistant to erythromycin and 27 (90%) were sensitive (MIC 12 µg/ml); 9 types (30%) were resistant to clarithromycin and 21 (70%) were sensitive (MIC 12 µg/ml), and all types were sensitive to azithromycin (MIC 14 µg/ml).
Andrologia | 2015
T. Irez; Sezai Sahmay; Pelin Ocal; A. Goymen; Hülya Senol; N. Erol; Semih Kaleli; Onur Guralp
The main purpose of this prospective study is to examine possible influences of abnormalities of sperm nuclear condensation and chromatin decondensation with sodium dodecyl sulphate (SDS)‐EDTA on outcomes of intrauterine insemination (IUI) or intracytoplasmic sperm injection (ICSI) cycles. Semen samples from 122 IUI and 236 ICSI cycles were evaluated. Before semen preparation for IUI or ICSI, basic semen analysis was performed and a small portion from each sample was spared for fixation. The condensation of sperm nuclear chromatin was evaluated with acidic aniline blue, followed by sperm chromatin decondensation by SDS‐EDTA and evaluation under light microscope. Ongoing pregnancy rate was 24% and 26.2% in the IUI and ICSI groups respectively. The chromatin condensation rate was significantly higher in the ongoing pregnancy‐positive group compared to the negative group, both in IUI (P = 0.042) and ICSI groups (P = 0.027), and it was positively correlated with ongoing pregnancy rate in both IUI and ICSI groups (P = 0.015, r = 0.214 and P = 0.014, r = 0.312 respectively). Chromatin decondensation rates were not significantly different in neither of the groups. These results indicate that IUI and ICSI outcome is influenced by the rate of spermatozoa with abnormal chromatin condensation. Sperm chromatin condensation with aniline blue is useful for selecting assisted reproduction techniques (ART) patients.
Fertility and Sterility | 2011
Ismail Cepni; Onur Guralp; Pelin Ocal; Ramin Salahov; Hazel Gürleyen; Mehmet Idil
OBJECTIVE To present 13 cases of unruptured tubal ectopic pregnancies successfully treated with ultrasound-guided aspiration and local and systemic methotrexate (MTX) administration. DESIGN Case series. SETTING University hospital. PATIENT(S) Thirteen women with an unruptured tubal ectopic pregnancy. INTERVENTION(S) Transvaginal ultrasound-guided aspiration of the tubal ectopic pregnancy followed by MTX administration into the gestational sac (half of the calculated total dose of 25 mg/m(2)) and intramuscular injection (the remaining half of the calculated total dose of 25 mg/m(2)). MAIN OUTCOME MEASURE(S) Recovery of the patients, successful conservative treatment of the tubal ectopic pregnancies with preservation of the fallopian tubes. RESULT(S) Twelve (92%) of 13 women were successfully aborted, without need for salpingectomy or salpingostomy. CONCLUSION(S) Transvaginal ultrasound-guided aspiration of fetus followed by local and systemic methotrexate administration can be safely used to treat unruptured tubal ectopic pregnancies.
Journal of Experimental & Clinical Assisted Reproduction | 2007
Eric Scott Sills; Hussein S Qublan; Zeev Blumenfeld; Ahmad Vosough Dizaj; Ariel Revel; Serdar Coskun; Imad Abou Jaoude; Gamal I. Serour; Mamdoh Eskandar; Mohammad Ali Khalili; Aygul Demirol; Krinos Trokoudes; Pelin Ocal; Abdul Munaf Sultan; Benjamin A. Lotto; Adele El-Kareh
Background This research describes current clinical and demographic features sampled from reproductive endocrinology programs currently offering in vitro fertilization (IVF) in the Middle East. Methods Clinic leadership provided data via questionnaire on patient demographics, demand for IVF services, annual cycle volume, indications for IVF, number of embryos transferred, twinning frequency, local regulations governing range of available adjunct therapies, time interval between initial enrollment and beginning IVF as well as information about other aspects of IVF at each center. Results Data were received from representative IVF clinics (n = 13) in Cyprus, Egypt, Iran, Israel, Jordan, Lebanon, Qatar, Saudi Arabia and Turkey. Mean (± SD) age of respondents was 47.8 ± 8 yrs, with average tenure at their facility of 11.2 ± 6 yrs. Estimated total number of IVF programs in each nation responding ranged from 1 to 91. All respondents reported individual participation in accredited CME activity within 24 months. 76.9% performed embryo transfers personally; blastocyst transfer was available at 84.6% of centers. PGD was offered at all sites. In this population, male factor infertility accounted for most IVF consultations and the majority (59.1%) of female IVF patients were < 35 yrs of age. Prevalence of smoking among female IVF patients was 7.2%. Average number of embryos transferred was 2.4 (± 0.4) for patients at age < 35 yrs, and 2.9 (± 0.8) at age > 41 yrs. For these age categories, twinning (any type) was observed in 22.6 (± 10.8)% and 13.7 (± 10.4)%, respectively. In 2005, the average number of IVF cycles completed at study sites was 1194 (range 363–3500) and 1266 (range 263–4000) in 2006. Frozen embryo transfers accounted for 17.2% of cycles at these centers in 2005. Average interval between initial enrollment and IVF cycle start was 8 weeks (range 0.3–3.5 months). Conclusion This sampling of diverse IVF clinics in the Middle East, believed to be the first of its kind, identified several common factors. Government registry or oversight of clinical IVF practice was limited or nonexistent in most countries, yet number of embryos transferred was nevertheless fairly uniform. Sophisticated reproductive health services in this region are associated with minimal delay (often < 8 weeks) from initial presentation to IVF cycle start. Most Middle East nations do not maintain a comprehensive IVF database, and there is no independent agency to collect transnational data on IVF clinics. Our pilot study demonstrates that IVF programs in the Middle East could contribute voluntarily to collaborative network efforts to share clinical data, improve quality of care, and increase patient access to reproductive services in the region.
Gynecological Endocrinology | 2016
Burcu Aydin Boyama; Ismail Cepni; Metehan Imamoglu; Mahmut Oncul; Abdullah Tuten; Mehmet Aytac Yuksel; Mehmet Ertan Kervancioglu; Semih Kaleli; Pelin Ocal
Abstract The aim of this study was to determine whether homocysteine (hcy) concentrations in embryo culture media correlate with pregnancy outcome in assisted reproductive technology (ART) cycles. Forty patients who underwent single embryo transfer at the infertility clinic of a tertiary care center were recruited for this case-control study. Spent embryo culture media from all patients were collected after single embryo transfer on day 3 (n = 40). Hcy concentrations in embryo culture media were analyzed by enzyme cycling method. Patients were grouped according to the diagnosis of a clinical pregnancy. Sixteen patients were pregnant while 24 patients failed to achieve conception. Mean Hcy levels in the culture media were significantly different between the groups (p < 0.003), as 4.58 ± 1.31 μmol/l in the non-pregnant group and 3.37 ± 0.92 μmol/l in the pregnant group. Receiver operator curve analysis for determining the diagnostic potential of Hcy for pregnancy revealed an area under the curve of 0.792 (confidence interval: 0.65–0.94; p < 0.05). A cut-off value of 3.53 μmol/l was determined with a sensitivity of 83.3%, and a specificity of 68.8%. Lower hcy levels were associated with a better chance of pregnancy and better embryo grades. Hcy may be introduced as an individual metabolomic profiling marker for embryos.