Person: AVCI, BERRİN
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AVCI
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BERRİN
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Publication The efficacy and molecular mechanism of dehydroepiandrosterone in diminished ovarian reserve(Oxford Univ Press, 2020-07-01) Avcı, Berrin; AVCI, BERRİN; Çakır, C.; Kuşpınar, Göktan; KUŞPINAR, GÖKTAN; Işıklar, S.; Aslan, Kiper; ASLAN, MÜNİR KİPER; Kasapoğlu, I.; Uncu, Gürkan; UNCU, GÜRKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi; 0000-0002-9277-7735; HTQ-5866-2023; AAH-9694-2021; AAH-5119-2021; ABE-6685-2020; AER-7173-2022; AAT-3479-2021Publication Fertilisation and early embryonic development of immature and rescue in vitro-matured sibling oocytes(Taylor & Francis, 2020-01-16) Avcı, Berrin; Kasapoğlu, Işıl; Çakir, Cihan; Özbay, Aysun; Ata, Barış; Uncu, Gürkan; AVCI, BERRİN; KASAPOĞLU, IŞIL; ÇAKIR, CİHAN; Özbay, Aysun; UNCU, GÜRKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Histoloji ve Embriyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; 0000-0002-8332-7353; 0000-0001-8135-5468; AAT-3479-2021; GQR-0770-2022; AAH-5249-2021; CXJ-7203-2022 ; ABE-6685-2020The objective of this study was to assess the effect of rescue in vitro maturation and immediate intracytoplasmic sperm injection (ICSI) application on fertilisation success and early embryonic development of metaphase I (MI) oocytes. This was a retrospective cohort study including 2425 sibling oocytes in 259 ICSI cycles. ICSI was performed on 104 GV (germinal vesicle) oocytes which had reached the metaphase II (MII) stage (Group 1) and 231 MI oocytes which had reached the MII stage (Group 2) following IVM (in vitro maturation). Immediate ICSI was applied following oocyte aspiration on 292 MI stage (Group 3) and 1798 MII stage oocytes (Group 4). Normal fertilisation rates in Groups 1, 2, 3 and 4 were 51.9%, 39%, 30.1% and 59.5%, respectively. The rates of blastocyst development per oocyte and per zygote were calculated as 3.8%, 3.0%, 6.8%, 14.1% and 7.4%, 7.7%, 22.7%, 23.6% for Groups 1, 2, 3 and 4, respectively. The blastocyst development rate was significantly higher in the MI-ICSI group compared with other immature oocytes. Even though performing ICSI on the oocytes at the MI stage on the day of oocyte aspiration resulted in lower fertilisation rates, it was associated with significantly higher rates of blastocyst development.Publication Scheduling gnrh antagonist cycles by a short course of oral estradiol administration during early follicular phase: A comparative study with non-scheduled cycles(Taylor & Francis Ltd, 2015-06-01) Aslan, Kiper; ASLAN, MÜNİR KİPER; UNCU, GÜRKAN; Avci, Berrin; AVCI, BERRİN; Uncu, Gürkan; Saribal, Seda; Ata, Barış; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları Anabilim Dalı.; 0000-0002-9277-7735; 0000-0003-1106-3747; C-8049-2013; AAT-3479-2021; AER-7173-2022; AAH-9694-2021; ABE-6685-2020This hypothesis generating study investigated whether GnRH antagonist cycles can be scheduled by a short course of oral estradiol administration during the follicular phase without impairing treatment outcome. Thirty-five women who underwent follicular phase estrogen scheduling (ES) of GnRH antagonist cycles were retrospectively matched for age and number of prior failed cycles with 35 women who underwent unscheduled GnRH antagonist cycles. ES group was given 6 mg/day estradiol orally from cycle day 2 until (including) one day before the scheduled start of stimulation. Gonadotropins were started on cycle days 2-3 in the control group. Flexible GnRH antagonist protocol was employed in both groups. ES group received estradiol for a median of 5 days. Total gonadotropin consumption was similar but one more GnRH antagonist injection was required in the ES group. Endometrial thickness on the day of hCG injection was increased in the ES group (12 versus 10 mm, p<0.01). Number of oocytes, metaphase II oocytes and transferred embryos were similar. Embryo implantation rates were 44.8% versus 34.4% (p=0.3), and clinical pregnancy rates were 48.6% versus 37.1%, (p=0.33) in the ES and control groups, respectively. All women in the ES group had oocyte retrieval and embryo transfer within the desired period.Publication Effect of embryo morphology on maternal serum β-hCG level in pregnancies resulting from a fresh single cleavage embryo and a fresh single blastocyst(Oxford Univ Press, 2018-07-01) Kuşpınar, Göktan; Kasapoğlu, Işıl; Sarıbal, Seda; Uncu, Gürkan; Avcı, Berrin; KUŞPINAR, GÖKTAN; KASAPOĞLU, IŞIL; Sarıbal, Seda; UNCU, GÜRKAN; AVCI, BERRİN; Bursa Uludağ Üniversitesi/Sağlık Bilimleri Enstitüsü/Kadın Hastalıkları ve Doğum Anabilim Dalı; 0000-0002-0338-8368; AAH-5119-2021; HTQ-5866-2023; AAT-3479-2021; ABE-6685-2020; CXJ-7203-2022; FTW-2214-2022Publication Amh levels may predict for mullerian anomalies and pregnancy outcomes patients with pcos.(Elsevier, 2020-09-01) Aslan, Kiper; ASLAN, MÜNİR KİPER; Albayrak, Özge; Bilgiç, Kübra Özlem; BİLGİÇ, KÜBRA ÖZLEM; Kasapoglu, Işıl; KASAPOĞLU, IŞIL; Avci, Berrin; AVCI, BERRİN; Uncu, Gurkan; UNCU, GÜRKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; 0000-0002-9277-7735; AAH-9694-2021; AER-7173-2022; AAT-3479-2021Publication Evaluation of endometrioma pathophysiology and related ovarian damage by PTEN / AKT apoptosis signaling pathway(Elsevier Science, 2020-09-01) Şen, Furkan; Aslan, Kiper; Kuşpınar, Göktan; Çakır, Cihan; Kasapoglu, Işıl; Avcı, Berrin; Uncu, Gürkan; ŞEN, HAMZA FURKAN; ASLAN, MÜNİR KİPER; KUŞPINAR, GÖKTAN; ÇAKIR, CİHAN; KASAPOĞLU, IŞIL; AVCI, BERRİN; UNCU, GÜRKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi.; 0000-0002-9277-7735; 0000-0002-8332-7353; AAH-5119-2021; AAT-3479-2021; HTQ-5866-2023; AER-7173-2022; AAH-9694-2021; AAH-5249-2021; KEU-2073-2024; CXJ-7203-2022; ELU-2357-2022Publication The kisspeptin and kisspeptin receptor in follicular microenvironment: Is that really necessary for oocyte maturation and fertilisation?(Taylor & Francis Inc, 2022-08-19) Kuşpinar, Göktan; KUŞPINAR, GÖKTAN; Çakır, Cihan; ORAL, HALUK BARBAROS; ÇAKIR, CİHAN; KASAPOĞLU, IŞIL; Sarıbal, Seda; BUDAK, FERAH; Budak, Ferah; Avcı, Berrin; Uncu, Gürkan; UNCU, GÜRKAN; AVCI, BERRİN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İmmunoloji Anabilim Dalı.; 0000-0002-8332-7353; 0000-0001-7625-9148; IZP-9398-2023; AAH-5249-2021; F-4657-2014; HTQ-5866-2023The aim of this study was to determine whether Kisspeptin and Kisspeptin receptor in the follicular microenvironment is necessary for human oocyte maturation and fertilisation. The cumulus cell (CC) and follicle fluids (FF) obtained from the first aspirated follicles (n = 52) from 32 patients were divided into three groups considering nuclear maturation and fertilisation results of oocytes: (1) Metaphase I or germinal vesicle stage oocytes (incomplete nuclear maturation, n = 10), (2) unfertilised metaphase II oocytes (incomplete cytoplasmic maturation, n = 16), and (3) fertilised metaphase II oocytes (completed nuclear-cytoplasmic maturation, n = 26). The gene expression levels were assessed by RT-PCR. The levels of Kisspeptin (KISS1) and Kisspeptin receptor (KISS1R) were measured by ELISA. There were no significant efficacy KISS1 and KISS1R gene expressions in cumulus cells in terms of oocyte nuclear maturation stage (Group 1, vs Group 2 + Group 3) (respectively p = .49; p = .45). In terms of the cytoplasmic maturation stage (Group 2, vs Group 3); KISS1 and KISS1R expressions in CCs were comparable (respectively p = .07; p = .08). In FFs, KISS1 and KISS1R concentrations were similar between all groups (respectively p = .86; p = .26). In conclusion, the relative KISS1 and KISS1R expressions in CC and also KISS1 and KISS1R level of FF were independent of oocytes nuclear and/or cytoplasmic maturation. Impact statement What is already known on this subject? It has been demonstrated that Kisspeptin is an essential regulator of reproductive function and plays a key role in the modulation of GnRH secretion and gonadotropin release. Still, no information is available about the link between gene expression or concentration in the follicular microenvironment and oocyte development. What do the results of this study add? The study has shown that the relative Kisspeptin (KISS1) and Kisspeptin receptor (KISS1R) and expressions in cumulus cell (CC) and also KISS1 and KISS1R levels of follicle fluids (FF) were independent of oocytes nuclear and/or cytoplasmic maturation. What are the implications of these findings for clinical practice and/or further research? Based on the findings, it is difficult to establish a concept that kisspeptin can directly induce oocyte maturation. Nevertheless, to confirm these findings, further studies with a larger sample size are needed.Publication Luteal oestradiol for patients with serum oestradiol levels lower than expected per oocyte(Taylor, 2021-03-15) Kasapoğlu, Işıl; Düzok, Nergis; Şen, Esra; Çakır, Cihan; Avcı, Berrin; Uncu, Gürkan; KASAPOĞLU, IŞIL; DÜZOK, NERGİS; Şen, Esra; ÇAKIR, CİHAN; AVCI, BERRİN; UNCU, GÜRKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Histoloji ve Embriyoloji Anabilim Dalı; 0000-0002-8332-7353; AAT-3479-2021; AAH-5249-2021; CXJ-7203-2022; JLC-5688-2023; FVL-9509-2022; ELU-2357-2022Although the efficiency of progesterone in providing luteal phase support has been established, the role of oestradiol supplementation during the luteal phase remains controversial. We evaluated pregnancy outcomes of patients who had a ratio of serum E2 levels on the hCG day to the number of oocytes retrieved (oestradiol/oocyte ratio - EOR) levels of <100 pg/ml by supporting them with additional oestradiol during the luteal phase. In total, 150 patients with an EOR < 100 pg/ml of oestradiol undergoing antagonist intracytoplasmic sperm injection (ICSI) cycles were randomly assigned into two groups to receive either oral oestradiol (4 mg/d) plus vaginal progesterone (90 mg, 2 x 1/day) (group 1) or vaginal progesterone (90 mg, 2 x 1/d) alone (group 2). Implantation rate following transfer of a single embryo did not differ between the two groups (group 1 = 33.3%; group 2 = 34.9%; p = 0.85). Similarly, both groups gave comparable clinical pregnancy rates per embryo transfer with 31.7% in group 1 compared with 28.6% in group 2 (p = 0.69). In conclusion the study suggests that the addition of 4 mg oral E2 to progesterone does not increase the probability of pregnancy.Publication Comparison of semen parameters in the same patients before and after diagnosis of COVID-19(Wiley, 2023-09-01) Çakır, Cihan; Kuşpınar, Göktan; Kurt, Gizem; Berber, Miray; Aslan, Kiper; Kasapoğlu, Işıl; Uncu, Gürkan; Avcı, Berrin; ÇAKIR, CİHAN; KUŞPINAR, GÖKTAN; Kurt, Gizem; Berber, Miray; ASLAN, MÜNİR KİPER; KASAPOĞLU, IŞIL; UNCU, GÜRKAN; AVCI, BERRİN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Histoloji ve Embriyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; 0000-0002-8332-7353; 0000-0002-9277-7735; AAH-5249-2021; HTQ-5866-2023; DBD-8926-2022; JLV-2420-2023; AER-7173-2022; CXJ-7203-2022; AAT-3479-2021; ELU-2357-2022Clinical and histopathological evidence suggest that the male reproductive system may be negatively impacted in patients with coronavirus disease (COVID-19). The objective of this study is to investigate the effect of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on semen parameters by comparing semen analyses before and after COVID-19 diagnosis in the same patient. We retrospectively analyzed 342 semen analyses by reviewing medical records. The study included two groups of patients: (i) those who underwent two consecutive semen analyses within 6 months, one before (n = 114) and one after (n = 114) COVID-19 diagnosis, and (ii) a control group (n = 114) that was age-matched and did not receive a diagnosis of COVID-19. The study results indicated a significant decrease in semen volume, total sperm count per ejaculate, progressive motile sperm count, total motile sperm count, and normal sperm morphology after SARS-CoV-2 infection in comparison to their respective values before the infection. Subgroup analyses showed that the duration of COVID-19 diagnosis (short-term vs. long-term) did not impact the changes in semen parameters. However, fever during the COVID-19 process had a negative effect on semen parameters, particularly sperm concentration, unlike in patients without fever. In conclusion, our findings suggest that SARS-CoV-2 infection is associated with a decline in semen quality, which may potentially impact male fertility. Furthermore, it's important to note that the negative effects on semen parameters may persist in the long-term. Our results also indicate that fever during active infection could be a significant risk factor that negatively affects spermatogenesis.Publication Does adjuvant usage in the luteal phase improve live birth rates of icsi - et patients with previous implantation failure?(Oxford Univ Press, 2022-07-01) UNCU, GÜRKAN; Uncu, Gürkan; Kasapoğlu, I.; KASAPOĞLU, IŞIL; ASLAN, MÜNİR KİPER; Çınar, C.; Kuşpınar, G.; KUŞPINAR, GÖKTAN; Avcı, B.; AVCI, BERRİN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; 0000-0002-9277-7735; HTQ-5866-2023; AER-7173-2022