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  1. Ana Sayfa
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Yazar "Pekel, Aslihan" seçeneğine göre listele

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  • Küçük Resim Yok
    Öğe
    A successful healthy live birth from a female patient with hypogonadotropic hypogonadism and oocytes with unusually large cytoplasmic inclusions
    (Soc Brasileira Reproducao Assistida-Sbra, 2016) Duvan, Candan Iltemir; Pekel, Aslihan; Ercan, Ummu Gulsum; Arikan, Yuksel Onaran
    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.
  • Küçük Resim Yok
    Öğe
    Can hyaluronan binding assay predict the outcome of intrauterine insemination in couples with unexplained or mild male factor infertility?
    (Avicenna Research Institute ajmb@avicenna.ac.ir No.2 and 3, Shabo Alley,Street No.18, Velenjak Avenue,Yemen Street, Shaheed Chamran,Tehran, 19857-43413, 2015) Yildirim, Melahat; Duvan, Zehra Candan İltemir; Pekel, Aslihan; Ayrim, Aylin; Kafali, Hasan
    Background: The purpose of this study was to evaluate the prognostic effect of Hyaluronan Binding Assay (HBA) which has been used as a method of sperm selection for intracytoplasmic sperm injection procedure, on the outcome of intrauterine insemination (IUI) in couples with unexplained or mild male factor infertility. Methods: 77 infertile couples were enrolled in our study. On the day of IUI procedure, HBA test was performed by using fresh semen samples, and the rates of sperm binding to HBA were calculated. HBA values and semen parameters were compared. Fisher exact test was used to evaluate the relationship between HBA ratio and pregnancy status. Mann-Whitney U test was used to compare quantitative variables between pregnant and non-pregnant groups. The p<0.05 was considered statistically significant. Results: In this study, HBA ratio was 69(29.25%) and pregnancy rate was 14.29%. A significant positive correlation between HBA and total motile sperm count, inseminating sperm count, progressive motility, morphology, and sperm concentration (p<0.001, p<0.001, p:0.007, p<0.003, p:0.003 respectively) was observed. Although HBA values in pregnant group were higher than those in non-pregnant group, this result did not reach the statistically significant level (HBA: 67(20%) for nonpregnant group, 80.5(21.3%) for pregnant group). Also, no relationship between HBA values and pregnancy status was found. Moreover, there was no significant correlation between pregnancy status and HBA ratios based on the suggested cut-off value of 60 in literature (p=0.425). Conclusion: HBA does not predict the IUI outcome in couples with unexplained infertility or mild male factor infertility, but it can be used together with semen parameters to verify sperm quality. © 2015 Elsevier B.V., All rights reserved.
  • Küçük Resim Yok
    Öğe
    Changes of sFas and sFasL, oxidative stress markers in serum and follicular fluid of patients undergoing IVF
    (Springer/Plenum Publishers, 2015) Pekel, Aslihan; Gonenc, Aymelek; Turhan, Nilgun Ozturk; Kafali, Hasan
    The 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. This 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. Patients 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). 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.
  • Küçük Resim Yok
    Öğe
    The Effect of Coasting on Intracytoplasmic Sperm Injection Outcome in Antagonist and Agonist Cycle
    (Royan Inst, 2017) Duvan, Z. Candan Iltemir; Kalem, Muberra Namli; Onaran, Yuksel; Keskin, Esra Aktepe; Ayrim, Aylin; Pekel, Aslihan; Kafali, Hasan
    Background: Coasting can reduce the ovarian hyperstimulation syndrome (OHSS) risk in ovulation induction cycles before intracytoplasmic sperm injection (ICSI). This study aimed to investigate the effect of gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist protocols to controlled ovarian hyperstimulation (COH) cycles with coasting on the parameters of ICSI cycles and the outcome. Materials and Methods: In a retrospective cohort study, 117 ICSI cycles were performed and coasting was applied due to hyperresponse, between 2006 and 2011. The ICSI outcomes after coasting were then compared between the GnRH agonist group (n=91) and the GnRH antagonist group (n=26). Results: The duration of induction and the total consumption of gonadotropins were found to be similar. Estradiol (E-2) levels on human chorionic gonadotropin (hCG) day were found higher in the agonist group. Coasting days were similar when the two groups were compared. The number of mature oocytes and the fertilization rates were similar in both groups; however, the number of grade 1 (G1) embryos and the number of transferred embryos were higher in the agonist group. Implantation rates were significantly higher in the antagonist group compared to the agonist group. Pregnancy rates/embryo transfer rates were higher in the antagonist group; however, this difference was not statistically significant (32.8% for agonist group vs. 39.1% for antagonist group, P > 0.05). Conclusion: The present study showed that applying GnRH-agonist and GnRH-antagonist protocols to coasted cycles did not result in any differences in cycle parameters and clinical pregnancy rates.
  • Küçük Resim Yok
    Öğe
    The effect of coasting on intracytoplasmic sperm injection outcome in antagonist and agonist cycle
    (Royan Institute (ACECR) info@celljournal.org, 2017) Iltemir Duvan, Zehra Candan; Namlı Kalem, Muberra; Onaran, Yüksel Arikan; Keskin, Esra Aktepe; Ayrim, Aylin; Pekel, Aslihan; Kafali, Hasan
    Background: Coasting can reduce the ovarian hyperstimulation syndrome (OHSS) risk in ovulation induction cycles before intracytoplasmic sperm injection (ICSI). This study aimed to investigate the effect of gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist protocols to controlled ovarian hyperstimulation (COH) cycles with coasting on the parameters of ICSI cycles and the outcome. Materials and Methods: In a retrospective cohort study, 117 ICSI cycles were performed and coasting was applied due to hyperresponse, between 2006 and 2011. The ICSI outcomes after coasting were then compared between the GnRH agonist group (n=91) and the GnRH antagonist group (n=26). Results: The duration of induction and the total consumption of gonadotropins were found to be similar. Estradiol (E2) levels on human chorionic gonadotropin (hCG) day were found higher in the agonist group. Coasting days were similar when the two groups were compared. The number of mature oocytes and the fertilization rates were similar in both groups; however, the number of grade 1 (G1) embryos and the number of transferred embryos were higher in the agonist group. Implantation rates were significantly higher in the antagonist group compared to the agonist group. Pregnancy rates/embryo transfer rates were higher in the antagonist group; however, this difference was not statistically significant (32.8% for agonist group vs. 39.1% for antagonist group, P>0.05). Conclusion: The present study showed that applying GnRH-agonist and GnRH-antagonist protocols to coasted cycles did not result in any differences in cycle parameters and clinical pregnancy rates. © 2017 Elsevier B.V., All rights reserved.

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