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Dive into the research topics where Aslıhan Pekel is active.

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Featured researches published by Aslıhan Pekel.


Journal of Assisted Reproduction and Genetics | 2015

Changes of sFas and sFasL, oxidative stress markers in serum and follicular fluid of patients undergoing IVF

Aslıhan Pekel; Aymelek Gönenç; Nilgün Öztürk Turhan; Hasan Kafali

PurposeThe Fas-Fas Ligand interaction is one of the essential events for the induction of apoptosis whereas the exact role of their soluble forms in the reproductive system is still not fully understood. Also oxidative stress in the pathogenesis of infertility causing diseases in women and has been suggested as one of the important factors that negatively affect IVF outcome. In this study, our aim was to evaluate serum and follicular fluid levels of soluble Fas soluble Fas Ligand, malondialdehyde, superoxide dismutase and total antioxidant capacity in patients undergoing IVF and compared with controls.MethodsThis study included 109 patients. Patients were classified as unexplained infertility (N = 31), PCOS (N = 19), tubal factor (N = 9) and endometriosis (N = 10) and compared with male factor infertility (N = 40) that was the control group. sFas and sFasL levels were measured by immunoassay method. MDA, SOD and TAC levels were measured by colorimetric method.ResultsPatients with unexplained infertility, PCOS and tubal factor had significantly lower sFas levels compared with their controls (respectively, p < 0.01, p < 0.05, p < 0.05). However, SOD activity in unexplained infertility, PCOS and endometriosisgroupswere significantly higher than control group (p < 0.01).Decreased follicular fluid TAC levels were found in all patient groups compared with controls (respectively, p < 0.01, p < 0.05, p < 0.01, p < 0.01).Patients with tubal factor had significantly higher serum sFasL (p < 0.05), but lower follicular fluid sFasL levels (p < 0.05) compared with unexplained infertility. Tubal factor and endometriosis groups had lowerfollicular fluid TAC levels compared to unexplained infertility and PCOSgroups (p < 0.01).Conclusion(s)In this study, serum and follicular fluid sFas levels were decreased and antioxidant activity was impaired in infertility, possibly implying increased apoptosis. Especially in unexplained infertility group changes in this parametres more remarkable.


Journal of Clinical and Analytical Medicine | 2018

The role of semen parameters in pregnancy of the women having intrauterine insemination

Nilgün Öztürk Turhan; Müzeyyen Uyanık; Aydın Köşüş; Nermin Köşüş; Aslıhan Pekel; Ergün Uyanık

1 Nilgun Turhan1, Muzeyyen Uyanık2, Aydin Kosus3, Nermin Kosus3, Aslıhan Pekel4, Ergun Uyanık5 1Bayındır Hospital, Obs&Gyn, İstanbul, 2Medicana Hospital, Obs&Gyn, Bursa, 3Self Employed, Obs&Gyn, Ankara, 4Medical Park Hospital, Embriology, Ankara, 5Bursa Yuksek Ihtisas Training and Research Hospital, Obs&Gyn, Bursa, Turkey The role of semen parameters in the likelihood of pregnancy The role of semen parameters in pregnancy of women having intrauterine insemination


JBRA assisted reproduction | 2016

A successful healthy live birth from a female patient with hypogonadotropic hypogonadism and oocytes with unusually large cytoplasmic inclusions.

Candan Iltemir Duvan; Aslıhan Pekel; Ümmü Gülsüm Ercan; Yuksel Onaran Arıkan

This study aimed to report the case of a successful live birth from a woman having oocytes with abnormally large cytoplasmic inclusions. The patient described in this case is a 28 year-old woman with hypogonadotropic hypogonadism (HH) with a history of two previous unsuccessful in vitro fertilization (IVF) attempts offered an antagonist protocol. Stimulation was performed with human menopausal gonadotropin 300 IU/day. The intracytoplasmic sperm injection (ICSI) procedure was performed 4-6 hours after oocyte aspiration for all mature oocytes. Six oocytes were retrieved, five of which mature (MII). All oocytes had abnormal cytoplasmic structures. Two were fertilized after ICSI and two top quality embryos were transferred on Day 2. Our case report suggests that HH patients with refractile bodies/lipofuscin in their oocytes may not have their pregnancies negatively affected. While there have been several reports of successful births from dysmorphic oocytes, no cases of successful pregnancies followed by live births from young women with HH and oocytes with large cytoplasmic inclusions had been reported to date.


Turkish Journal of Medical Sciences | 2011

ICSI outcome in severely oligoasthenozoospermic patients and its relationship to prewash progressive sperm motility

Nilgün Öztürk Turhan; Aslıhan Pekel; Aylin Ayrim; Omer Bayrak


JOURNAL OF REPRODUCTION AND INFERTILITY | 2015

Can hyaluronan binding assay predict the outcome of intrauterine insemination in couples with unexplained or mild male factor infertility

Melahat Yildirim; Candan Iltemir Duvan; Aslıhan Pekel; Aylin Ayrim; Hasan Kafali


Fertility and Sterility | 2013

Evaluation of serum and follicular fluid levels of soluble Fas, soluble Fas ligand and oxidative stress parameters of patients undergoing IVF

Aslıhan Pekel; Aymelek Gönenç; N. Ozturk Turhan; Hasan Kafali; S. Gurcan


Yeni Tıp Dergisi | 2015

Preimplantasyon Genetik Tarama/Tanı Testi Uygulanan IVF Olgularının Retrospektif Analizi

Candan Iltemir Duvan; Aslıhan Pekel; Ümmü Gülsüm Ercan; Yüksel Onaran; Aylin Ayrim; Müberra Namlı Kalem; Hasan Kafali; Nilgün Öztürk Turhan


Turkish Journal of Medical Sciences | 2013

Effectiveness of HP-hMG versus r-FSH in patients undergoing IVF/ICSI cycles with moderate male-factor infertility

Nilgün Öztürk Turhan; Aslıhan Pekel; Aylin Ayrim; Burcu Kasap; Omer Bayrak


Fertility and Sterility | 2013

Does ignoring of the the GnRH-antagonists on the day of hCG effect cycle outcome during GnRH-antagonist protocol?

C. Iltemir Duvan; Yuksel Onaran; A. Ayrim; Aslıhan Pekel; Hasan Kafali; N. Ozturk Turhan


Turkish Journal of Medical Sciences | 2011

Single or double sperm wash processing by density gradient centrifugation: effect on clomiphene citrate induced intrauterine insemination cycle outcomes

Nilgün Öztürk Turhan; Aslıhan Pekel; Yüksel Onaran; Zehra Candan Iltemir Duvan; Omer Bayrak

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Hasan Kafali

Turgut Özal University

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A. Ayrim

Turgut Özal University

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