Ismail Biyik

Ismail Biyik

orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 May 2021 in Taiwanese Journal of Obstetrics and Gynecology
Verified
Journal Article
Open access
IBIsmail Biyik
Ismail Biyik
OEOzlem Erten
Ozlem Erten
OIOzben Ozden Isiklar
Ozben Ozden Isiklar
OIOnur Ince
Onur Ince
CSCenk Soysal
Cenk Soysal
EOEfser Oztas
Efser Oztas
Women with polycystic ovary syndrome (PCOS) have an increased cardiometabolic risk. Similarly, it was previously shown that atherosclerotic and cardiovascular risk is increased in the general population with lower serum Klotho levels. The aim of this study was to investigate the lotho and thiol/disulfide levels in women with non-obese PCOS compared to healthy controls and also to investigate the relationship of serum Klotho and thiol/disulfide homeostasis with cardiometabolic risk factors. In this prospective case control study, human serum alpha Klotho levels and thiol/disulfide homeostasis of women with PCOS aged between 19-33 were compared to their age and BMI matched non - PCOS healthy controls. In addition, the correlation of these molecules with other metabolic markers/measurements were also investigated. Metabolic parameters such as mean waist circumference, lipid accumulation product, visceral adiposity index, fasting insulin, homeostasis model assessment of insulin resistance and triglyceride values were higher in the PCOS group (p = 0.038, p = 0.008, p = 0.001, p = 0.001, p = 0.002 and p = 0.002, respectively) compared to controls. However, mean serum Klotho and native thiol levels (respectively p < 0.0001 and p = 0.038) were lower compared to controls. Correlation analysis revealed that serum Klotho levels were negatively correlated with BMI, waist circumference, disulphide/total thiol, disulphide/native thiol, HOMA-IR and LAP-index. Findings of decreased serum Klotho and native thiol values of the PCOS group compared to controls and the negative correlation of serum Klotho levels with metabolic markers supports the idea that decreased Klotho may be another mechanism by which cardiovascular risk is increased in women with PCOS.

1 November 2021 in Taiwanese Journal of Obstetrics and Gynecology
Verified
Journal Article
Open access
IBIsmail Biyik
Ismail Biyik
UKUzeyir Kalkan
Uzeyir Kalkan
SSSercan Simsek
Sercan Simsek
To compare the T-cadherin, E-cadherin, PR and ER staining levels of deep infiltrating endometriosis (DIE) tissue, ovarian endometriomas and normal endometrial tissues. DIE tissue of 24 cases, endometrioma of 30 cases and normal endometrial tissues of 30 cases were examined. T-cadherin, E-cadherin, ER-α and PR-α staining levels of DIE, endometrioma tissues and endometrial tissues were compared immunohistochemically. H-score was calculated to compare the expression of T-cadherin, E-cadherin, ER-α, PR-α in IHC staining based on the percentage of cells stained at each intensity level. T-cadherin, E-cadherin, ER and PR H-score were found lowest in DIE tissue and the highest in endometrial tissue (p < 0.0001, <0.0001, <0.0001 and < 0.0001, respectively). In correlation analysis, a positive correlation was found between T-cadherin, E-cadherin, PR and ER H-score (p < 0.0001 for each). No correlation was found between age, body mass index (BMI), visual analog scale (VAS) score, CA125, endometrioma size and the severity of dysmenorrhea, dyspareunia and dystonia (p > 0.05). T-cadherin, E-cadherin, ER and PR H-score were found lowest in DIE tissue, the highest in endometrium tissue. The finding of lower expression of PR-α in endometriotic nodule in our study may be related to decrease in progesterone effect which could not inhibit the decrease in the expression of T-cadherin and E-cadherin, thus the invasiveness of DIE tissue. These findings suggest that DIE tissue and ovarian endometrioma tissues have a different biology.

12 January 2015 in Canadian Urological Association Journal
Verified
Journal Article
Open access
PDF file
SCSoner Coban
Soner Coban
IKIbrahim Keles
Ibrahim Keles
IBIsmail Biyik
Ismail Biyik
MGMuhammed Guzelsoy
Muhammed Guzelsoy
ATAli Riza Turkoglu
Ali Riza Turkoglu
NONihal Ocak
Nihal Ocak
Introduction: There are several studies on the relationship between increased mean platelet volume (MPV) and varicocele. We investigated the relationship between preoperative and 6-month postoperative MPV values in patients whose varicocele was corrected with surgery.Methods: A total of 282 patients underwent surgery at our urology clinic between December 2011 and December 2013 for primary varicocele. We retrospectively examined the records of 61 patients who came to the 6-month postoperative follow-up. The preoperative varicocele diagnosis was made with physical examination findings and supported with colour Doppler ultrasonography.Results: The varicocele was grade I in 12 patients, grade II in 34 patients and grade III in 11 patients. When the preoperative and 6-month postoperative haemoglobin (Hb), MPV, mean corpuscular volume, platelet, and platelet distribution width (PDW) values were compared, there was a significant decrease in MPV (p = 0.019), and a significant increase in Hb (p < 0.001). A noticeable increase was also present in PDW, but it was not statistically significant (p = 0.058).Conclusion: We found that MPV increased in patients with varicocele and tended to decrease again after the varicocele was surgicallycorrected. However, we feel larger prospective series are needed.

21 February 2021 in Journal of Obstetrics and Gynaecology Research
Verified
Journal Article
Closed access
PDF file
IBIsmail Biyik
Ismail Biyik
FOFikriye Yasemin Ozatik
Fikriye Yasemin Ozatik
MAMustafa Albayrak
Mustafa Albayrak
OOOrhan Ozatik
Orhan Ozatik
YTYasemin Teksen
Yasemin Teksen
CSCenk Soysal
Cenk Soysal

19 March 2022 in BMC Pregnancy and Childbirth
Verified
Journal Article
Open access
PDF file
ÖEÖzlem Erten
Özlem Erten
IBIsmail Biyik
Ismail Biyik
CSCenk Soysal
Cenk Soysal
OIOnur Ince
Onur Ince
NKNadi Keskin
Nadi Keskin
YTYasemin Tasci
Yasemin Tasci
Background: Postpartum depression and maternal-infant attachment scores were examined in uninfected women during the COVID 19 pandemic in Kutahya, a rural province in Turkey's North Aegean region. Methods: This cohort study was conducted in the Kutahya Health Sciences University Hospital obstetrics unit between April 2021 and August 2021. 178 low-risk term pregnant women who gave birth were given the surveys Edinburgh Postpartum Depression Scale and Mother-to-Infant Bonding Scale (MIBQ) 6 weeks after birth. The Edinburgh Postpartum Depression Scale was used to determine postpartum depression and the Mother-to-Infant Bonding Scale was used to determine maternal attachment. Results: In this study, the postpartum depression rate was calculated as 17.4%. When depressed and non-depressed patients were compared, education level, maternal age, BMI, MIBQ score, history of previous pregnancies, route of delivery, previous operation history, economic status, employment status and pregnancy follow-up information were found to be similar (p > 0.05). The ratings on the Mother-to-Infant Bonding Scale were found to be similar in depressed and non-depressed patients (p > 0.05). The odds of maternal depression for patients who received guests at home was 3.068 (95%CI [1.149–8.191]) times the odds of patients who did not receive guests at home. Conclusions: Although a relationship has been found between accepting guests in the postpartum period and postpartum depression, it is necessary to investigate in further studies whether there is a causal relationship.

27 March 2019 in LUTS: Lower Urinary Tract Symptoms
Verified
Journal Article
Closed access
PDF file
IBIsmail Biyik
Ismail Biyik
BKBilgen Kucuk
Bilgen Kucuk
HAHusniye F. Arpaci
Husniye F. Arpaci
HDHakan Demirci
Hakan Demirci