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ULUCAN, KORKUT

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Diş Hekimliği Fakültesi

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ULUCAN

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KORKUT

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Now showing 1 - 8 of 8

Open Access
Exome-wide association study of competitive performance in elite athletes
(2023-03-01) ULUCAN, KORKUT; Bulgay C., Kasakolu A., Kazan H. H., Mijaica R., ZORBA E., Akman O., Bayraktar I., Ekmekci R., KONCAGÜL S., ULUCAN K., et al.
The aim of the study was to identify genetic variants associated with personal best scores in Turkish track and field athletes and to compare allelic frequencies between sprint/power and endurance athletes and controls using a whole-exome sequencing (WES) approach, followed by replication studies in independent cohorts. The discovery phase involved 60 elite Turkish athletes (31 sprint/power and 29 endurance) and 20 ethnically matched controls. The replication phase involved 1132 individuals (115 elite Russian sprinters, 373 elite Russian endurance athletes (of which 75 athletes were with VO2max measurements), 209 controls, 148 Russian and 287 Finnish individuals with muscle fiber composition and cross-sectional area (CSA) data). None of the single nucleotide polymorphisms (SNPs) reached an exome-wide significance level (p < 2.3 × 10−7) in genotype–phenotype and case–control studies of Turkish athletes. However, of the 53 nominally (p < 0.05) associated SNPs, four functional variants were replicated. The SIRT1 rs41299232 G allele was significantly over-represented in Turkish (p = 0.047) and Russian (p = 0.018) endurance athletes compared to sprint/power athletes and was associated with increased VO2max (p = 0.037) and a greater proportion of slow-twitch muscle fibers (p = 0.035). The NUP210 rs2280084 A allele was significantly over-represented in Turkish (p = 0.044) and Russian (p = 0.012) endurance athletes compared to sprint/power athletes. The TRPM2 rs1785440 G allele was significantly over-represented in Turkish endurance athletes compared to sprint/power athletes (p = 0.034) and was associated with increased VO2max (p = 0.008). The AGRN rs4074992 C allele was significantly over-represented in Turkish sprint/power athletes compared to endurance athletes (p = 0.037) and was associated with a greater CSA of fast-twitch muscle fibers (p = 0.024). In conclusion, we present the first WES study of athletes showing that this approach can be used to identify novel genetic markers associated with exercise- and sport-related phenotypes.
Open Access
Investigation of the Relationship between Anxiety Disorder and Time Perception with DRD2 rs1800497 Polymorphism
(2022-10-01) ULUCAN, KORKUT; TACAL ASLAN, BESTE; San H. O. , Tarlacı S., Ulucan K., Polat T., Yılmaz Ö. Ö. , Tacal Aslan B.
We have many biological systems that regulate the perception of time, which is one of our most essential abilities that allows subjectively predicting, perceiving and understanding the duration of experiences, feelings and achievements. There are findings obtained from many studies aiming to illuminate the place and importance of time, which was the most critical reference point for human understanding of life in the past, for us mammals. According to these findings, it is observed that there is a similar mechanism that provides the perception of time in almost every living organism. Time perception is vital for the healthy functioning of cognitive activities, physiological needs and behavioral relations, and the bio-psycho-social order's systematicity. Among the studies conducted, the findings obtained in the studies related to the effect of psychiatric disorders on the perception of time are somewhat blurry compared to the others. The research for this study was based on six basic Polymorphisms known to affect time perception and internal clock mechanisms. These are as follows: SLC6A4 / 5-HTTLPR, 5HT2A / T102C, DRD2 / TAQ1A, SLC6A3 / 3UTR VNTR, COMT / VAL158MET, GABRB2 A/C, CLOCK. In our study, the relationship between the rs1800497 polymorphism, which is one of these seven polymorphisms that are effective in the functioning of the internal clock in the human brain, and the inventory used in the measurement of anxiety, was examined in 14 participants. Beck Anxiety Inventory (BAI) was used to measure anxiety, and PCR was used to detect genetic variants. When the findings were evaluated, no significant relationship was found between anxiety and DRD2 rs1800497 polymorphism.
Open Access
Association between mct1 gene polymorphism (rs1049434) with the athletic performance of elite track and field athletes
(2023-03-01) ULUCAN, KORKUT; Bulğay C., Zorba E., Bayraktar I., Kazan H. H., Ulucan K., Ergün M. A.
Abstract:Monocarboxylate transporter 1 (MCT1; SLC16A1) is a proton-dependent cotransporter/exchanger, located on the apical membrane of cells. MCT1 is able to transport several monocarboxylates including lactate, pyruvate and acetate, which makes this protein critical in terms of the athletic performances. The rs1049434 polymorphism in theMCT1gene was frequently associated with the performance of the athletes in different populations. The present study aims to decipher any possible association of the rs1049434 polymorphism with the personal best of elite track and field athletes. A total of sixty elite athletes (31 sprint/power and 29 endurance) and twenty control/sedentary with the ages of 18-35 voluntarily participated in the study. The International Association of Athletics Federations (IAAF) score scale was used to determine the performance levels of the personal best (PB) of the athletes. Whole exome sequencing (WES) was performed by the genomic DNA isolated from blood of the participants. Sport type, sex and PB were chosen as the parameters to compare within and between the groups by logistic regression models. The sex was not the criterion that was significantly different between or within the groups. Although PB scores were not significant within the sprint/power group, it was significant within the endurance group by the codominant (p=0.044), dominant (p=0.016) and over-dominant (p=0.048) models. The rs1049434 polymorphism in theMCT1gene may be linked to the PB of the endurance athletes. However, other genetic alterations should be regarded to conclude the effect of this polymorphism. The multi-factorial genetic background that could associate with the athletic performanceis still under investigation in our research group. Nevertheless, further studies with more participants are needed.
Open Access
Evaluation of the Association of VDR rs2228570 Polymorphism with Elite Track and Field Athletes’ Competitive Performance
(2023-03-01) ULUCAN, KORKUT; Bulgay C., Bayraktar I., Kazan H. H., YILDIRIM D. S., ZORBA E., Akman O., ERGÜN M. A., CERİT M., ULUCAN K., EKEN Ö., et al.
The present study aimed to examine the vitamin D receptor (VDR), rs2228570 polymorphism, and its effect on elite athletes’ performance. A total of 60 elite athletes (31 sprint/power and 29 endurance) and 20 control/ physically inactive, aged 18–35, voluntarily participated in the study. The International Association of Athletics Federations (IAAF) score scale was used to determine the performance levels of the athletes’ personal best (PB). Whole exome sequencing (WES) was performed by the genomic DNA isolated from the peripheral blood of the participants. Sports type, sex, and competitive performance were chosen as the parameters to compare within and between the groups by linear regression models. The results showed no statistically significant difference between the CC, TC, and TT genotypes within and between the groups (p > 0.05). Additionally, our results underlined that there were no statistically significant differences for the association of rs2228570 polymorphism with PBs within the groups of the (p > 0.05) athletes. The genetic profile in the selected gene was similar in elite endurance, sprint athletes, and in controls, suggesting that rs2228570 polymorphism does not determine competitive performance in the analyzed athlete cohort.
Open Access
In silico approach to the analysis of SNPs in the human APAF1 gene
(2019-01-01) ULUCAN, KORKUT; Kaman T., Karasakal O. F. , Ozkan Oktay E., ULUCAN K., Konuk M.
The apoptotic protease activating factor 1 (APAF1) gene encodes a cytoplasmic protein that initiates apoptosis and is a crucial factor in the mitochondria-dependent death pathway. APAF1 is implicated in many pathways such as apoptosis, neurodegenerative diseases, and cancer. The purpose of this study was to predict deleterious/damaging SNPs in the APAF1 gene via in silico analysis. To this end, APAF1 missense SNPs were obtained from the NCBI dbSNP database. In silico analysis of the missense SNPs was carried out by using publicly available online software tools. The stabilization and three-dimensional modeling of mutant proteins were also determined by using the I-Mutant 2.0 and Project HOPE webservers, respectively. In total, 772 missense SNPs were found in the APAF1 gene from the NCBI dbSNP database, 18 SNPs of which were demonstrated to be deleterious or damaging. Of those, 13 SNPs had a decreasing effect on protein stability, while the other 5 SNPs had an increasing effect. Based on the modeling results, some dissimilarities of mutant type amino acids from wild-type amino acids such as size, charge, and hydrophobicity were revealed. The SNPs predicted to be deleterious in this study might be used in the selection of target SNPs for genotyping in disease association studies. Therefore, we could suggest that the present study could pave the way for future experimental studies.
Open Access
Obesity is associated with IL-6 gene polymorphisms rs1800795 and rs1800796 but not SOCS3 rs4969170
(2023-03-01) ULUCAN, KORKUT; Koc G., Doran T., Uygur M. M., Kirac D.
Background: An imbalance of inflammatory factors can stimulate obesity by inducing chronic inflammation in adipose tissue. Interleukin-6 (IL-6) is a cytokine with both inflammatory and anti-inflammatory functions. Suppressor of cytokine signaling 3 (SOCS3) acts as an inhibitor for a number of cytokine signals. The IL-6 and SOCS3 genes are known to be involved in lipid and energy metabolism, although it is unclear how these genes relate to obesity. The aim of this study is to determine whether the obesity risk is associated with the IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) gene polymorphisms. Methods and results: Based on their body mass index (BMI) scores, 185 people were determined, of whom 90 were from the control group and 95 were obese. Anthropometric measurements and biochemical parameters of the study subjects were documented during the examination. Genomic DNA isolation was performed from the blood samples of all participants. IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) polymorphisms were detected by real-time quantitative polymerase chain reaction (qRT-PCR) from genomic DNA samples. The IL-6 rs1800795 and rs1800796 variants showed a significant difference between the control and obese groups (p = 0.027; p = 0.013). The SOCS3 rs4969170 variation did not substantially differ between the control and obese groups (p = 0.825). Conclusion: In our study, IL-6 rs1800795(G/C) and rs1800796(G/C) polymorphisms appeared to be a risk factor for obesity. The C allele was associated with the obesity phenotypes. However, the SOCS3 rs4969170 (A/G) polymorphism was not linked to an increased risk of obesity. IL-6 polymorphisms may be new targets for obesity treatment.
Open Access
Sprint and Anaerobic Power with the Soccer-Specific ACTN3 Gene: A Distintive Example
(2024-03-01) TACAL ASLAN, BESTE; POLAT, TOLGA; YILMAZ, ÖZLEM ÖZGE; ULUCAN, KORKUT; Söyler M., Zileli R., Özkamçı H., Diker G., Sever M., Bayrakdaroglu S., Ön S., Can İ., Ulucan K., Tacal Aslan B., et al.
The aim of this study is twofold: (1) to identify differences in certain anaerobic parameters (10m sprint, 30m sprint, anaerobic power, and Illinois agility tests) between professional and amateur soccer players, and (2) to determine whether there is a difference in theACTN3gene polymorphism between professional and amateur soccer players. Ultimately, the goal is to reveal which parameters contribute to the differentiation in these two aspects. A total of 133 volunteer soccer players, including 71 professionals and 62 amateurs, participated in the research. DNA extraction from buccal epithelial cells was performed using a commercial kit to determine the genetic background of the athletes, and Real-Time PCR was conducted for genotyping. Statistical analysis of the findings obtained from the test results was performed using the SPSS 23 (SPSS Inc., Chicago, IL, USA) package program. The homogeneity of variance of the data was assessed using the Levene Test, and normal distribution analyses were conducted using the Shapiro-Wilk Test. Chi-square and Mann-Whitney U tests were employed for parameter analysis. The significance level was set at p<0.05. Evaluation of the data in our study revealed no statistically significant difference inACTN3rs1815739 gene polymorphism between the groups (p>0.05). However, there is a statistically significant difference in anaerobic parameters (10m sprint, 30m sprint, and anaerobic power) except for the Illinois test (p<0.05). In conclusion, our study found that gene polymorphism is not a differentiating factor between professional and amateur soccer players, but speed (10m and 30m) and anaerobic power parameters are differentiating factors.
Open Access
Single nucleotide polymorphisms in IL-1A RS1800587, IL-1B RS1143634 and vitamin D receptor rs731236 in stage III grade B/C periodontitis
(2022-06-01) ÖZTÜRK ÖZENER, HAFİZE; ASLAN, BEGÜM; AĞRALI, ÖMER BİRKAN; ULUCAN, KORKUT; YILDIRIM, HATİCE SELİN; KURU, LEYLA; Ozener H., ASLAN B., Eken B. F., AĞRALI Ö. B., Yildrim H. S., Altunok E. C., ULUCAN K., KURU L.
The purpose of the study is to determine the prevalence of interleukin (IL)-1A (rs1800587), IL-1B (rs1143634) and vitamin D receptor (VDR) (TaqI, rs731236) gene polymorphisms in the Turkish population and their association with Stage III Grade B/C periodontitis. Systemically and periodontally healthy individuals (N = 100) and Stage III Grade B/C periodontitis patients (N=100) based on clinical and radiographic examination were included in this research. Clinical attachment level, probing depth, bleeding on probing, plaque and gingival indices of the subjects were measured. Genotyping of IL-1A (rs1800587), IL-1B (rs1143634) and VDR (rs731236) polymorphisms was conducted by Real Time PCR. Allelic and genotypic distributions of IL-1A (rs1800587) gene polymorphism were not associated with periodontitis (p > 0.05). In IL-1B (rs1143634) gene polymorphism, the C allele was detected more frequently in healthy individuals compared with the periodontitis patients (p=0.045). CC genotype and C allele in VDR (rs731236) gene polymorphism was higher in periodontitis patients (p=0.031, p=0.034, respectively). In comparison with Grade B periodontitis patients and healthy subjects, CC genotype and C allele were observed more frequently in the Grade B periodontitis in terms of alleles (C/T) and genotypes for VDR (rs731236) polymorphism (p=0.024, p=0.008, respectively). This study presents that the VDR (rs731236) polymorphism are associated with enhanced susceptibility to Stage III periodontitis in the Turkish population. Furthermore, VDR (rs731236) polymorphism may be used as an identification criteria to discriminate Grade B and Grade C in Stage III periodontitis.