Yazar "Nursal, Ayse Feyda" seçeneğine göre listele
Listeleniyor 1 - 18 / 18
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe CNR2 rs2229579 and COMT Val158Met variants, but not CNR2 rs2501432, IL-17 rs763780 and UCP2 rs659366, contribute to susceptibility to substance use disorder in the Turkish population(Taylor & Francis Ltd, 2019) Kurnaz, Selin; Yazici, Ahmet Bulent; Nursal, Ayse Feyda; Aydin, Pinar Cetinay; Atar, Ayca Ongel; Aydin, Nazan; Pehlivan, SacideOBJECTIVE: Substance use disorders (SUD) are among the most important public health problems throughout the world. We investigated whether COMT (Val108/158Met), CNR2 (rs2501432 and rs2229579), UCP2 (rs659366), and IL-17 (rs763780) gene variants were associated with SUD and its clinical parameters in a Turkish population. METHODS: We conducted a case-control study among 136 subjects with SUD and 100 healthy controls. Six variants were analysed by the PCR-RFLP method. RESULTS: The CNR2 rs2229579 T/T genotype and T allele increased in SUD groups than controls while the C/C genotype and C allele were more prevalent in the control group compared to the SUD group (p = 0.000 and p = 0.001, respectively). The COMT Val108/158Met Val/Val genotype and Val allele were significantly associated with polysubstance abuse (p < 0.05). There was no significant difference between the SUD group and control group regarding genotype and allele frequencies of COMT (Val108/158Met), CNR2 (rs2501432), UCP2 (rs659366) and IL-17 (rs763780) variants. CONCLUSIONS: This is the first study that discussed the relation of these variants and SUD patients in the Turkish population. The results of the analysis indicated that the CNR2 rs2229579 variant has an effect on susceptibility to SUD, suggesting that this variant might play a role in the physiopathology of SUD. The COMT Val108/158Met variant might be an important factor affecting polysubstance use.Öğe Do UCP2, IL-17, mi196a2, and NR3C1 gene variants contribute to the risk of microtia? A preliminary study in Turkish population(Elsevier Science Bv, 2018) Ozdilli, Kursat; Bekerecioglu, Mehmet; Nursal, Ayse Feyda; Pehlivan, Mustafa; Sever, Ulgen; Buyukgural, Berker; Pehlivan, Sacide[Abstract Not Available]Öğe eNOS and VEGF Variants Might Increase the Risk of Pancreatic Cancer(Pleiades Publishing Inc, 2021) Hasan Dagmura; Yigit, Serbulent; Gumusay, Ozge; Nursal, Ayse Feyda; Daldal, Emin; Karakus, NevinBackground: Endothelial nitric oxide synthase (eNOS) is essential in chronic inflammation and carcinogenesis. The association between variants in vascular endothelial growth factor (VEGF) and several cancers still remains uncertain. We studied whether there is a relation between eNOS/VEGF variants and risk of pancreatic cancer (PC). Materials and Methods: This prospective case-control study included 76 PC patients (28 women and 48 men) and 100 healthy controls. Blood samples from all participants were genotyped for eNOS variable number tandem repeat (VNTR) and VEGF insertion/deletion (I/D) variants by PCR. Results: There was a significant difference between groups for the eNOS intron 4 VNTR genotype distributions (p = 0.01). eNOS 4a/4b and 4b/4b genotypes were higher in patients with PC group compared to controls while eNOS 4a/4b genotype was more prevalent in control group than in patient group. Significant differences were observed between groups for the VEGF I/D variant genotype and allele frequencies (p < 0.00, and p < 0.00). VEGF I/D variant I/I genotype and I allele increased in patient group than controls. A statistically significant association was observed when the patients were compared with the controls according to D/D + D/I versus D/D (p < 0.00, OR: 0.094, 95% CI: 0.03-0.22). Conclusions: We provided evidence that eNOS VNTR and VEGF I/D variants might influence the development of PC.Öğe Global and glucocorticoid receptor gene-specific (NR3C1) DNA methylation analysis in patients with cannabinoid or synthetic cannabinoid use disorder(Elsevier Ireland Ltd, 2021) Pehlivan, Sacide; Aytac, Hasan Mervan; Aydin, Pinar Cetinay; Nursal, Ayse Feyda; Pehlivan, MustafaThis study investigates the relationship between cannabinoid use disorder (CUD) or synthetic cannabinoid use disorder (SCUD) and the global methylation, methylation of NR3C1 gene promotor, and NR3C1 BclI poly-morphism, considering clinical parameters. Based on the DSM-5 criteria, 172 SCUD patients? and 44 CUD pa-tients? diagnoses were confirmed with a positive urine test; 88 healthy volunteers were also included in the study. Global DNA methylation was measured using a 5-methylcytosine (5-mC) DNA ELISA Kit. Methylation-specific PCR was used to identify the methylation of the NR3C1 gene. The analysis of the BclI polymorphism of the NR3C1 gene was evaluated by using the PCR-RFLP. Our results demonstrated that the mean of 5-mC percentages of SCUD patients differed significantly from those of the control group. When comparing NR3C1 gene methyl-ation and clinical parameters due to NR3C1 genotype distribution in patients, the genotype distribution was significantly different between the groups, due to the former polysubstance abuse. Additionally, there was a significantly positive correlation between the 5-mC percentages of SCUD patients and the reported durations of their disorders. In summary, whereas global DNA methylation may be associated with SCUD, the methylation of the NR3C1 gene and NR3C1 BclI polymorphism were not related to CUD or SCUD.Öğe Impact of Endothelial NOS VNTR Variant on Susceptibility to Diabetic Neuropathy and Type 2 Diabetes Mellitus(Bentham Science Publ Ltd, 2021) Yigit, Serbulent; Nursal, Ayse Feyda; Uzun, Suheyla; Rustemoglu, Husniye; Dashatan, Payam Amiri; Soylu, Huseyin; Karakus, NevinPurpose: The aim of this study was to evaluate whether the VNTR intron 4b/4a variant in the eNOS gene is associated with type 2 diabetes mellitus (T2DM) and DPN. Methods: A total of 598 subjects were enrolled in the study. eNOS VNTR 4b/4a variant was geno-typed by polymerase chain reaction (PCR) method. Results: eNOS VNTR intron 4b/4b genotype and b allele increased in patients with both DPN and T2DM compared healthy controls (p=0.0005, OR:1.94, p=0.000002, OR:4.10, respectively). 4a/4b genotype was more prevalent in controls than in DPN and T2DM patients (p=0.00008, OR:0.46; p=0.000004, OR:0.24, respectively). eNOS VNTR b allele was more common in DPN patients and T2DM patients compared with controls (p=0.007, p=0.00002, respectively). Conclusion: The eNOS VNTR 4b/4b homozygous genotype and hence 4ballele as a genetic risk factor for T2DM and DPN, which may serve as a useful marker of increased susceptibility to the risk of these disorders.Öğe Importance of NPC1 Gene 644 A -> G Mutation in Coronary Artery Disease(Kamla-Raj Enterprises, 2017) Ozturk, Sibel Demir; Celik, Atac; Nursal, Ayse Feyda; Tekcan, Akin; Rustemoglu, Aydin; Karakus, Nevin; Yigit, SerbulentCoronary artery disease (CAD) is the most prominent cause of mortality worldwide. The basis of CAD pathogenesis is the occlusion of coroner vessels progressively due to atherosclerotic plaques. NPCI gene plays a critical role in the atherosclerosis progression. This study aimed to examine whether 644 A -> G polymorphism of NPCI is associated with the risk of coronary artery disease in Turkish patients. In this case-control study, 200 persons were studied (100 patients and 100 controls). The 644 AEG polymorphism of NPCI gene is analyzed using polymerase chain reaction and restriction fragment length polymorphism methods. There was a significant relationship between the distribution of coronary artery disease and control group in terms of allele and genotype frequency (p= 0.0002) (p=0.003), respectively. According to the researchers' results, 644 A -> G polymorphism in NPCI gene can be one of the predisposition factor to coronary artery disease in Turkish population.Öğe Investigating the eNOS and IFN-gamma Gene Variants Susceptible to Bipolar Disorder or Schizophrenia in a Turkish Cohort(Turkish Assoc Psychopharmacology, 2020) Pehlivan, Sacide; Aytac, Hasan Mervan; Ciftci, Hayriye Senturk; Oyaci, Yasemin; Pehlivan, Mustafa; Nursal, Ayse FeydaBackground: Schizophrenia (Sch) and bipolar disorder (BD) are debilitating chronic psychiatric disorders that are both etiologically and clinically heterogeneous. According to the gathered evidence, multiple mental disorders are accompanied by inflammation. Interferon-gamma (IFN-gamma), as a regulatory cytokine, is involved in the immune response as a proinflammatory mediator. Several critical physiological functions are regulated and governed by nitric oxide (NO) in the central nervous system. This study aimed to investigate the association between IFN-gamma +874T/A and eNOS 894G/T variants and Sch or BD susceptibility. Methods: Blood samples were collected from patients and healthy subjects. IFN-gamma +874T/A and eNOS 894G/T variants were genotyped with the PCR-RFLP. We evaluated the patients with some clinical parameters (the duration of the disorder, age of onset, number of hospitalizations, family history, tobacco smoking or drug, alcohol usage). Statistical analyses were performed using the SPSS version. Results: When the genotype distributions and allele frequencies of the IFN-gamma +874T/A and eNOS 894G/T in the patients diagnosed with Sch or BD were compared with the control group, there were not found to be significant differences between the groups. When comparing IFN-gamma +874T/A and eNOS 894G/T genotype distributions and allele frequencies of Sch or BD patients due to clinical parameters, the genotype distribution of IFN-gamma +874T/A in BD patients was significantly different between the groups due to the presence of tobacco smoking (OR: 0.217, 95%Cl: 0.054-0.878; p = 0.032). Conclusions: To the best of our knowledge, this is the first study that examines the association between the IFN-gamma and eNOS gene variants and Sch or BD in a Turkish population. Although IFN-gamma +874T/A and eNOS 894G/T variants are not considered as candidate genes for Sch or BD, the results indicated that the BD patients carrying IFN-gamma +874T/A AA genotype were less susceptible to tobacco smoking in a Turkish population.Öğe Is there any Association between the Functional Variants of the NOS3 Gene and Psoriasis?(Aves, 2018) Pehlivan, Sacide; Inaloz, Huseyin Serhat; Nursal, Ayse Feyda; Gulel, Aslihan; Pehlivan, MustafaIntroduction: Psoriasis (Ps) is a chronic, immune-mediated inflammatory skin disorder with an incompletely understood etiology. The aim of this study was to investigate the relationship between the suspectibility to Ps and G894T (rs1799983) and variable number tandem repeat (VNTR) variants of the endothelial nitric oxide synthase (NOS3) gene. Methods: This is a case-controlled study that included 74 Ps patients in addition to 74 matched healthy unrelated controls from the same locality. The NOS3 gene variants were analyzed by polymerase chain reaction (PCR) and/or PCR-restriction fragment lenght polymorphism (PCR-RFLP). Results: The NOS3 G894T TT genotype and T allele were more common in the Ps group compared to the healthy controls (p=0.000, p=0.001, respectively). The NOS3 VNTR variant BB genotype and B allele were higher in the patient group than in the control group (p=0.005, p=0.000 respectively). The NOS3 VNTR AA genotype was lower in the patient group (p=0.027). However, a stratified analysis including arthritis, the Ps area and severity index (PASI), the age of onset, and family history revealed no significant correlation between the NOS3 G894T and NOS3 VNTR genotypes (p>0.05). Conclusion: These results suggest that the NOS3 G894T and VNTR variants are associated with Ps in a Turkish cohort. However, future studies are needed to understand the genetic role of the NOS3 variants in the development of Ps.Öğe Medication-related osteonecrosis of the jaw (MRONJ) and eNOS Polymorphisms in multiple myeloma patients: a single center experience(Bmc, 2021) Tas Ozyurtseven, Betul; Serin, Istemi; Nursal, Ayse Feyda; Pehlivan, Sacide; Pehlivan, MustafaBackground Multiple myeloma (MM) constitutes approximately 10% of hematological malignancies. Bisphosphonates have established themselves in solid organ metastasis and multiple myeloma lytic bone lesions by inhibiting osteoclast activation. Medication-related osteonecrosis of the jaw (MRONJ) emerges as an important complication. Investigating host-based factors, and developing personal risk factors gain importance in the development mechanism of MRONJ. We aimed to reveal the different genotype polymorphisms, and clinical effects of eNOS in patients with a diagnosis of MRONJ in MM patients. Methods Medical records and blood samples were collected from 60 MRONJ patients with MM and 60 healthy controls. Inclusion criteria was having an exposed maxillofacial bone for more than eight weeks, a history of bisphosphonates, and no history of radiation therapy for the jaws. eNOS G894T and intron 4 VNTR were calculated by polymerase chain reaction and/or restriction fragment length polymorphism. Results eNOS G894T and VNTR genotypes and alleles were compared statistically with the healthy control group. There was no significant difference between the two groups. In comparison between G894T and clinical parameters, aphthous stomatitis was more common in TT genotype, while DMFT > 3 was more common in TG-GG genotype (p = 0.035, 0.023). Conclusions eNOS induces osteogenesis in bone metabolism, with its regulatory effects on bone remodeling and also NO induced angiogenesis takes place indirectly with its protective effect on endothelial functions. We see that these polymorphisms affecting the entire process of bone remodeling and angiogenesis, especially mucosal damage, which is the triggering factor of MRONJ pathology, have been revealed in the MM patient group. Considering the MRONJ initiating factors, it is necessary to emphasize the importance of our study results. It should be seen as an important step for new studies towards MRONJ and its treatment.Öğe mi196a2 T/C variant as possible predisposal factor for ankylosing spondylitis in a Turkish population(Elsevier Science Bv, 2018) Pehlivan, Sacide; Gursoy, Savas; Nursal, Ayse Feyda; Akaltun, Mazlum Serdar; Ozdilli, Kursat; Pehlivan, Mustafa[Abstract Not Available]Öğe MTHFR gene C677T and A1298C variants are associated with FMF risk in a Turkish cohort(Wiley, 2018) Nursal, Ayse Feyda; Kaya, Suheyla; Sezer, Ozlem; Karakus, Nevin; Yigit, SerbulentBackgroundMethylenetetrahydrofolate reductase (MTHFR) is a crucial enzyme in homocysteine (Hcy) metabolism. We aimed to evaluate a possible relationship between MTHFR gene C677T (rs 1801133), A1298C (rs 1801131) variants and susceptibility to FMF in a Turkish cohort. Material-MethodsThis case-control study included 198 Turkish FMF patients and 100 healthy subjects as controls. MTHFR C677T and A1298C were analyzed by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) methods. ResultsThe genotype distribution and allele frequency of the MTHFR C677T were statistically different between the patients and the control group (P=.006, P=.001, respectively). The frequency of the TT genotype and T allele of MTHFR C677T was significantly higher in the patients than in the controls. The genotype distribution of MTHFR A1298C variant did not show any statistically significant difference between the patients and the controls (P=.05). The patients had statistically different frequencies in allele C of MTHFR A1298C variant compared with the control (P=.032). We also examined the risk associated with inheriting the combined genotypes for the two MTHFR variants. According to these results, individuals who were CC homozygous at C677T locus and AA homozygous at A1298C locus have a lower risk of developing FMF (P=.002). Individuals who were TT homozygous at C677T locus and AC heterozygous at A1298C locus have higher risk of developing FMF (P=.033). ConclusionOur findings clearly showed there was an association the MTHFR C677T/A1298C variants and susceptibility to FMF in the Turkish sample.Öğe PER3 VNTR variant and susceptibility to smoking status/substance use disorder in a Turkish population(Univ Sao Paulo, Inst Psiquiatria, 2020) Nursal, Ayse Feyda; Aydin, Pinar Cetinay; Uysal, Mehmet Atilla; Pehlivan, Mustafa; Oyac, Yasemin; Pehlivan, SacideBackground: Substance use and smoking exert devastating impact on sleep, especially hindering the ease of falling asleep, compromising the sleep maintenance, and distorting the sleep cycles. PERIOD genes are believed to play a role in individual differences in sleep timing by influencing circadian. Objective: The aim of this study was to ascertain whether Per3 VNTR variant affects suspectibility of individuals to substance use disorder (SUD) and smoking status in a Turkish population. Methods: A total of 549 subjects, including 212 SUD patients, 160 smoker, and 177 healthy controls, matched by ethnicity, age, and gender, were recruited in a case-control study. Genotyping of Per3 variant was performed using PCR method. Results: When the SUD, smoker groups and controls were compared in terms of 5R/5R, 5R/4R, 4R/4R genotypes, no significant difference was observed. Besides, allele frequencies of Per3 VNTR were similar among the groups. Discussion: Our data indicate that Per3 VNTR variant is not associated with the risk of SUD and smoking status in our population.Öğe Possible Association of PER2/PER3 Variable Number Tandem Repeat Polymorphism Variants with Susceptibility and Clinical Characteristics in Pancreatic Cancer(Mary Ann Liebert, Inc, 2021) Dagmura, Hasan; Yigit, Serbulent; Nursal, Ayse Feyda; Duman, Esra; Gumusay, OzgeObjective: Pancreatic cancer (PC) is a serious disease with poor outcomes, and its prevalence has been increasing steadily. The circadian rhythm (CR) is involved in multiple physiological events and maintains homeostasis. Alterations in the CR elevate the risk of developing cancer. The present case-control research was carried out to estimate the possible association between PERIOD2/PERIOD3 (PER2/PER3) gene variable number tandem repeat polymorphism (VNTR) variants and PC in the Turkish population. Materials and Methods: A total of 198 subjects (78 patients with PC and 120 healthy controls) were enrolled in this work. Genomic DNA was collected from peripheral blood mononuclear cells, and genotype analysis was performed using a polymerase chain reaction (PCR) method. Odds ratio (OR) with a 95% confidence interval (95% CI) was calculated using the chi(2) test. Results: The frequency of the 4R (4 repeats)/3R (3 repeats), 3R/3R genotypes, and 3R allele of PER2 VNTR in patients with PC was significantly higher than in the control group (p = 0003, p = 0.00004, respectively). PER2 VNTR 4/5 genotype was related to perineural invasion (p = 0.040). The genotype and allele distribution of PER3 VNTR variant did not show any statistical difference between the two groups (p > 0.05). PER2/PER3 VNTR 4/5-4R/3R combined genotype increased in the patient group (p = 0.013), while 4/5-4R/4R combined genotype was superior in the control group (p = 0.0001). Conclusions: Our work has indicated that PER2 VNTR 3R allele may play a crucial task in the pathogenesis of PC in Turkish patients, which may become a useful marker for predicting the development of PC. Furthermore, the PER2 VNTR genotype seems to be related to perineural invasion in PC.Öğe Role of MIF-173G/C and Mbl2 Codon 54A/B Variants in the Risk of Multiple Myeloma: An Association Study(Bentham Science Publ Ltd, 2021) Pehlivan, Mustafa; Nursal, Ayse Feyda; Gundes, Ilknur; Oyaci, Yasemin; Kivanc, Demet; Pehlivan, SacideBackground: Multiple myeloma (MM) is a malignant disease manifested by the clonal proliferation of atypical plasma cells. Macrophage inhibitory factor (MIF) is one of the pleiotropic regulators in various biological and cellular processes. Mannose-binding lectin (MBL) is a crucial protein involved in the lectin pathway of the immune system. Objective: We aimed to assess whether variants of MIF and MBL2 genes are associated with MM among a Turkish population. Methods: We analyzed the MIF-173G/C (rs755622) and MBL2 codon 54A/B (rs1800450) variants in 200 patients with MM and 200 healthy control subjects using a polymerase chain reaction (PCR) followed by restriction endonuclease digestion. There was also an evaluation of the patients undergoing autologous stem-cell transplantation (ASCT) for these variants. Results: AA and BB genotypes of MBL2 codon 54A/B increased in the patients as compared to the controls (p=0.008, p=0.001, respectively). The subjects carrying AA and BB genotypes of MBL2 were at high risk of development of susceptibility to MM by 7.377 and 8.812 times, respectively. The distribution of MBL2 codon 54A/B alleles was similar between the groups (p>0.05). There was no statistical difference between the patients and controls in the genotype and allele frequencies of the MIF173G/C variant (p>0.05). The patients undergoing ASCT, MBL2 codon 54A/B AA and BB genotypes also showed association with increased risk for MM (p=0.004, p=0.001, respectively). Conclusion: As far as we know, this is the first report of the study on an association between these variants and MM in our population. Our results indicate that the MBL2 codon 54A/B variant may be associated with susceptibility to MM.Öğe The Impact of PER3 VNTR Polymorphism on the Development of Schizophrenia in a Turkish Population(Pleiades Publishing Inc, 2021) Ozsoy, Filiz; Yigit, Serbulent; Nursal, Ayse Feyda; Kulu, Muberra; Karakus, NevinIntroduction: Up to 80% of patients who suffer from schizophrenia have sleep impairments, which affect physical and mental health, as well as quality of life. Several tandem repeat polymorphisms (VNTRs) in the Period 3 (Per3) gene have been associated with heritable sleep and circadian variables. The purpose of this study is to investigate the relationship between the VNTR variant of the PER3 gene and genetic predisposition of schizophrenia in a Turkish population. Method: Blood samples were taken from 100 patients with schizophrenia, and from 100 normal controls who are age and sex-matched. PER3 genotyping was performed on DNA by polymerase chain reaction (PCR) using specific primers. Results: For the PER3 VNTR polymorphism, we found no significant differences in the genotype distribution and allele frequency, between the schizophrenia and control groups. No association was noted between clinical and demographical characteristics of schizophrenia patients and the PER3 VNTR genotype distribution. Conclusions: This is the first study investigating association of the PER3 VNTR polymorphism with schizophrenia in a Turkish population. In conclusion, the results of this study do not support an association between the PER3 VNTR polymorphism and risk of schizophrenia in a Turkish population.Öğe The miRNA 196a2 rs11614913 variant has prognostic impact on Turkish patients with multiple myeloma(Springernature, 2020) Kirik, Melya Pelin; Pehlivan, Mustafa; Nursal, Ayse Feyda; Oyaci, Yasemin; Pehlivan, Sacide; Serin, IstemiObjective Multiple myeloma (MM) arises from malignant plasma cells as a single clone in the bone marrow. Accumulating evidences have reported that there is an association between miR-196a2 (rs11614913) variant and various cancers while there were unverified and inconsistent results in MM. The goal of this study is to investigate the impact of the miR-196a2 variant on clinical findings and susceptibility in MM. Two hundred MM patients (156 patients under transplantation of autologous stem cell) and 200 healthy controls included in this study. Results The statistical analysis showed no significant relationship for allele and frequencies of miR-196a2 genotype between patients and controls (p > 0.05). Log-rank test showed that gender has highly significant impact on both OS and PFS (p = 0.027, p = 0.045). In the univariate analysis, TT genotype (p = 0.022), and CT/TT (p = 0.008) had better OS. In the multivariate analysis, CC/CT-TT were associated with positively OS (p = 0.041). Currently, the most valuable prognostic markers in MM that has clinical implication are genetic abnormalities. It can be concluded from the results that miR-1962a variant is effective in prognosis of the MM. It is believed that these findings will help us understand the molecular basis of disease.Öğe TNF-alpha-308 G/A variant may be associated with bipolar disorder in a Turkish population(Univ Sao Paulo, Inst Psiquiatria, 2020) Nursal, Ayse Feyda; Aytac, Hasan Mervan; Ciftci, Hayriye Senturk; Yazar, Menekse Sila; Oyaci, Yasemin; Pehlivan, Mustafa; Pehlivan, SacideBackground: Tumor necrosis factor alpha (TNF-alpha) is a proinflammatory multifunctional cytokine produced by macrophages. A dysregulation of the immune system contribute to the pathogenesis of bipolar disorder (BD). In this study, we aimed to investigate the relationship between the TNF-alpha gene -308G/A promoter variant and the risk of BD. Methods: A total of 104 BD patients and 94 healthy controls were enrolled in the study. Genomic DNA was isolated and TNF-alpha-308G/A variant was analyzed using PCR-RFLP method. Results: TNF-alpha-308G/A variant GG genotype and G allele were more prevalent in BD patients compared to the controls (p = 0.002 and p = 0.017, respectively). The patients carrying GG genotype had a 5.927-fold higher risk of developing BD. Then, we divided patients into two groups as smokers and non-smokers. TNF-alpha-308G/A variant GA genotype was higher in non-smoker BD patients than smoker patients (p = 0.027). We found that TNF-alpha-308G/A AA genotype and A allele increased in smoker patients compared to non-smoker patients (p = 0.008, p = 0.002, respectively). Discussion: Our results provided evidence that TNF-alpha-308G/A variant may contribute to development of BD in a Turkish cohort. In addition, this variant plays a relevant role in the smoker status of BD.Öğe What are the roles of global DNA and APC 2 gene promotor hypermethylation in multiple myeloma?(Springer, 2021) Pehlivan, Sacide; Serin, Istemi; Nursal, Ayse Feyda; Oyaci, Yasemin; Gundes, Ilknur; Pehlivan, MustafaBackground In today's practice, gene-based approaches come to the fore in the determination of prognosis and treatment preferences of multiple myeloma (MM). DNA methylation is one of the new approach parameters. DNA methylation occurs by the addition of a methyl group to cytosines in CpG dinucleotides. In this study, besides comparing the global DNA and APC 2 gene promotor hypermethylation between our patients with MM and healthy control group, we aimed to demonstrate the effect of hypermethylation on MM treatment responses and survival. Methods and results 38 patients diagnosed with MM between January 2016 and January 2020 and 50 healthy controls were included in the study. The initial hypermethylation of the patients and the healthy control group were statistically analyzed. In addition, the increase in hypermethylation in the MM group before and after the first series of treatments were analyzed within themselves. There is a significant difference between the patients with MM diagnosis and the healthy control group in terms of the initial global hypermethylation (P = 0.001). In patients with MM, hypermethylation was significantly higher. Global hypermethylation in the post-treatment measurements was significantly increased in comparison to the pre-treatment state (P = 0.012). In terms of APC 2 promotor gene-specific hypermethylation, no significant differences were detected between pre- and post-treatment values (P = 0.368). Conclusions This study represents valuable data with the initial global DNA hypermethylation results in the MM patient group and the increase in hypermethylation post-treatment. it will shed light on future studies.
