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    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, Sacide
    OBJECTIVE: 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.
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    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, Mustafa
    This 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.
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    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, Sacide
    Background: 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.