37 results on '"Sevim Karakas Celik"'
Search Results
2. The role of GNLY gene polymorphisms in psoriasis pathogenesis
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Esra Ermis, Sevim Karakas Celik, Nilgun Solak, Gunes Cakmak Genc, and Ahmet Dursun
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Granulysin ,Genetics ,Molecular biology ,Polymorphism, single nucleotide ,Psoriasis ,Dermatology ,RL1-803 - Abstract
Abstract BACKGROUND: Psoriasis is a systemic inflammatory disorder that involves complex pathogenic interactions between the innate and adaptive immune systems. The most accepted mechanism in the etiopathogenesis of psoriasis is the induction of inflammation with keratinocyte hyperproliferation. Granulysin (GNLY) is a cytolytic antimicrobial peptide (AMP) that is secreted together with granzyme and perforin from the granules of human cytotoxic T lymphocytes (CTLs) and natural killer (NK) cells. It has been immunohistochemically proven that the expression of granulysin is increased in lesions of psoriasis. OBJECTIVE: This study aimed to investigate the relationship between psoriasis disease and granulysin gene polymorphisms. METHODS: GNLY rs7908 and rs10180391 polymorphisms were studied by PCR-RFLP in 100 psoriasis patients under treatment in the Dermatology Polyclinic of Bulent Ecevit University. In addition, 100 healthy individuals with similar age and sex distribution were used as a control group. RESULTS: In the control group, GNLY rs7908 CC genotype was significantly higher than in psoriasis patients (P= 0.031; OR= 0.305; Cl= 0.305 (0.121 - 0.773). In our study, the genotype distributions in patients and control groups were GNLY rs7908 (SNP) GG (51%, 37%), GC (41%, 44%), CC (8%, 19%); GNLY rs10180391 (SNP) from the CC (41%, 44%), CT (42%, % 41), TT (17%, 15%). STUDY LIMITATIONS: The study only included Turkish patients. CONCLUSION: Our findings showed that GNLY rs7908 CC genotype and C allele had a protective effect against psoriasis and decreased the disease severity (according to PASI score), whereas rs10180391 SNP did not show any effective role in psoriasis pathogenesis.
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- 2019
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3. Investigation of the relationship between IL17A , IL17F and ILR1N polymorphisms and COVID‐19 severity: The predictive role of IL17A rs2275913 polymorphism in the clinical course of COVID‐19
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Gunes Cakmak Genc, Sevim Karakas Celik, Busra Yilmaz, Nihal Piskin, Bulent Altinsoy, and Ahmet Dursun
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Immunology ,Genetics ,General Medicine ,Molecular Biology ,Genetics (clinical) - Published
- 2023
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4. Association of NOD1 and NOD2 Polymorphisms With Susceptibility to Subacute Sclerosing Panencephalitis
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Ayça Kocaaga, Gunes Cakmak Genc, Sevim Karakas Celik, İbrahim E. Piskin, Mustafa Calik, and Ahmet Dursun
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Pediatrics, Perinatology and Child Health ,Neurology (clinical) - Abstract
Background: Subacute sclerosing panencephalitis is a progressive neurodegenerative disease that is a late complication of measles infection. However, to date, the pathogenesis of subacute sclerosing panencephalitis is still not explained; both viral and host factors seem to be associated. The present study aimed to investigate the relationship between NOD1 and NOD2 gene variants and subacute sclerosing panencephalitis. Methods: The gene variants of NOD1 (rs2075820 and rs2075818) and NOD2 (R334Q and R334W) were explored in 64 subacute sclerosing panencephalitis patients and 70 controls using polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP). Results: The frequencies of the AA genotype and A allele of rs2075820 ( NOD1; c.796G>A) polymorphism were lower in patients compared with controls ( P = .022 and .014, respectively). The presence of the A allele of rs2075820 may be considered as a protective factor for subacute sclerosing panencephalitis. There was a significant difference between the groups in rs2075818 ( NOD1 G/C) polymorphism, and the CC genotype increased the risk of subacute sclerosing panencephalitis by 3.471-fold. The carriers of the C allele of rs2075818 (G/C) had a 1.855-fold susceptibility to subacute sclerosing panencephalitis ( P = .018). The GC genotype might be associated with subacute sclerosing panencephalitis susceptibility in the patients compared with patients without having that haplotype ( P = .03). Conclusions: Thus, we identified an association between subacute sclerosing panencephalitis and the rs2075820 ( NOD1 G/A) and rs2075818 ( NOD1 G/C) polymorphisms. These findings implicate a possible effect of this genetic polymorphism in susceptibility to subacute sclerosing panencephalitis, which needs to be confirmed in bigger populations.
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- 2022
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5. Association of
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Ayça, Kocaaga, Gunes, Cakmak Genc, Sevim, Karakas Celik, İbrahim E, Piskin, Mustafa, Calik, and Ahmet, Dursun
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- 2022
6. Investigation of adropin and IMA levels in psoriasis and their relation to duration and severity of disease
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Sevim Karakas-Celik, Aynure Öztekin, Tuba Gökdoğan Edgünlü, Gökhan Pektaş, Suzan Demir Pektas, Salim Neselioglu, and Ozcan Erel
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medicine.medical_specialty ,business.industry ,Duration (music) ,Internal medicine ,Psoriasis ,Medicine ,Disease ,business ,medicine.disease - Published
- 2019
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7. Effects of Interactions among Gene Polymorphisms of the Renin–Angiotensin-Aldosterone System on Hypertension in Turkish People from Southeast Anatolia
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Aysegul Bayramoglu, Arif Suner, Meral Urhan-Kucuk, Halil Ibrahim Guler, Abdullah Arpaci, Sevim Karakas-Celik, Hasret Ecevit, Zonguldak Bülent Ecevit Üniversitesi, and Bayramoğlu, Ayşegül
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0301 basic medicine ,haplotype ,medicine.medical_specialty ,hypertension ,business.industry ,Turkish ,030204 cardiovascular system & hematology ,renin-angiotensin-aldosterone system (RAAS) ,language.human_language ,ACE I/D ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Renin–angiotensin system ,medicine ,language ,Medicine ,genetic variations ,business ,Gene - Abstract
WOS: 000467103000005, Introduction: Hypertension (HT) is characterized by high blood pressure. The reninangiotensin-aldosterone system (RAAS) plays a crucial role in blood pressure (BP) regulation by maintaining vascular tone and the water-sodium balance. We aimed to investigate whether there is any relation between AGT (M235T), ACE (I/D), and AGTR1 (A1166C) genetic polymorphisms and hypertension among Turkish people from Southeast Anatolia. Method and Results: A total of 210 individuals, consisting of 102 healthy controls and 108 patients with essential hypertension admitted to the Cardiology Department of the Adiyaman University Research and Application Hospital were included the study. DNA isolation was performed from the blood samples via commercial kit. Genotype determination was determined using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Statistically significant differences were found between the control and patient groups in terms of genotype distribution and allelic frequencies of ACE I/D polymorphisms. Significant differences were found in the frequencies of ICM, DCM, DCT, DAT between the patient and control groups. Conclusions: In this study, we found a significant association of ACE I/D polymorphism with HT, and we showed that the I allele can increase the risk of HT in Turkish people from Southeast Anatolia. Although we did not find any association between independent AGT M235T and AGT1R A1166C polymorphisms and HT, we observed that the DCM, DCT, and DAT haplotypes of ACE/AGT1R/AGT polymorphisms reduced the risk of hypertension, while the ICM haplotype increased it., Research Foundation of Adiyaman UniversityAdiyaman University [TIPFBAP/2013-0004], This study was supported by a grant from the Research Foundation of Adiyaman University (TIPFBAP/2013-0004), Turkey.
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- 2019
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8. Lack of association between sirtuin gene variants and endometrial cancer
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Tuba Gökdoğan Edgünlü, Leyla Tekin, Sevim Karakas Celik, and Zonguldak Bülent Ecevit Üniversitesi
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0301 basic medicine ,Population ,Disease ,Biology ,Bioinformatics ,Endometrium ,03 medical and health sciences ,SIRT1 ,0302 clinical medicine ,Genetics ,medicine ,SNP ,education ,Genetics (clinical) ,education.field_of_study ,Endometrial cancer ,Gene polymorphism ,medicine.disease ,030104 developmental biology ,medicine.anatomical_structure ,Genetic marker ,030220 oncology & carcinogenesis ,Sirtuin ,biology.protein ,SIRT1 Gene - Abstract
Cancer of the endometrium is the most common gynecological cancer in women. The pathophysiology of the disease has not yet been clearly defined, and the pathways leading to endometrial carcinoma are not fully understood. Sirtuins are stress-responsive proteins that direct various post-translational modifications (PTMs) and, as a result, are master regulators of several cellular processes. Studies conducted on the SIRT1 enzyme and genetic expressions have revealed data on apoptosis and autophagy mechanisms as well as other actions on the cell. The purpose of our study was to investigate the relationship between rs7895833, rs7069102, and rs2273773 polymorphisms of the SIRT1 gene and endometrial cancer. This study took paraffin-embedded endometrium specimens from 48 endometrial cancer patients and 53 healthy control subjects. SIRT1 gene variants were determined with the PCR-CCTP method. The result of the single-nucleotide polymorphism (SNP) analysis indicated no significant relationship with endometrial cancer. Recent studies have shown that SIRT has had a positive effect on endometrial tumors. Our study analyzed, for the first time, the association between SIRT1 gene polymorphisms and endometrial cancer. Because of the low population our results are not reflecting the exact contribution of the polymorphism to the development of the disease, further studies need to be performed with higher population numbers. Therefore, further studies on a larger population in cohort studies will be required to confirm whether polymorphism is a potential novel genetic marker. © 2018, 16/104, This study was supported by the Research Found of the University Mugla Sitki Kocman (No: 16/104 ).
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- 2019
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9. Association Between IL-18 Gene Polymorphism and Hashimoto Thyroiditis
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Dilek Karakaya, Gunes Cakmak Genc, Sevim Karakas Celik, Tugba Aktas, Taner Bayraktaroglu, and Ahmet Dursun
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BackgroundHashimoto’s thyroiditis (HT) is the most frequent organ-specific autoimmune disease (AIT), which is called lymphocytic thyroiditis in which T helper-1 lymphocytes mediate the disease. IL-18 is expressed in thyroid follicular cells (TFCs) during HT. The findings of studies aimed at investigating the relationship between IL-18 and HT are highly contradictory. In this study, we aimed to investigate the association between IL-18 gene polymorphism and HT.Methods and ResultsThe study was included 97 patients diagnosed with HT and 86 volunteers in the healthy control group. The IL18-607C/A (rs1946518) ve -137G/C (rs187238) genotypes were determined using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. No significant difference in the mean ages and gender was observed between the groups (p = 0.763 and p = 0.658, respectively). -137 IL18 CG genotype is higher in HT than controls. The risk of the IL-18 CG genotype for HT patients was more than 2.237 times higher (OR; 2.237 %95 Cl: 1.195–4.187, p = 0.039) compared to that of the G/G genotype. Also, -607 AC genotype is higher in the control group than in the HT group (in individuals with the IL18 CG genotype).Conclusions According to our results, the CG genotype might be a risk factor for HT. Conversely, there is a possibility that the AC genotype also plays a protective role against the condition. However, further studies will contribute to the emergence of new solutions by revealing the molecular and cellular mechanisms of HT.
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- 2021
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10. The clinical effects of miR-26a, miR-16, let-7, miR-128a and miR-223 in acromegaly patients
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Cagrı, Bosna Islam, primary, Cinar, Nese, additional, Edgunlu, Tuba, additional, Akbaba, Gulhan, additional, Yaylali, Guzin, additional, Sevim, Karakas Celik, additional, Ebru, Onalan Etem, additional, Celik, Aycan, additional, and Gizem, Bircan Murside, additional
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- 2021
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11. IL28B, IL29 and micro-RNA 548 in subacute sclerosing panencephalitis as a rare disease
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Sevim Karakas Celik, Furuzan Kokturk, Mustafa Calik, Gunes Cakmak Genc, Ahmet Dursun, İbrahim Etem Pişkin, and Zonguldak Bülent Ecevit Üniversitesi
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Male ,0301 basic medicine ,Subacute sclerosing panencephalitis ,Adolescent ,IL28B ,IL29 ,Disease ,Polymorphism, Single Nucleotide ,Measles virus ,Pathogenesis ,03 medical and health sciences ,Rare Diseases ,0302 clinical medicine ,Immune system ,Genetics ,medicine ,Humans ,Genetic Predisposition to Disease ,Age of Onset ,Allele ,Child ,3' Untranslated Regions ,Allele frequency ,biology ,Interleukins ,fungi ,Gene polymorphism ,virus diseases ,General Medicine ,biology.organism_classification ,medicine.disease ,nervous system diseases ,MicroRNAs ,030104 developmental biology ,Gene Expression Regulation ,Case-Control Studies ,Immunology ,miRNA 548 ,Female ,Interferons ,030217 neurology & neurosurgery - Abstract
Subacute sclerosing panencephalitis (SSPE) is a progressive neurodegenerative disease which affects children and young adults, caused by a persistent infection of defective measles virus. IFN-?s (IL-28A, IL-28B and IL-29) are a group of cytokines mediating antiviral responses. It has been shown that IL-29 levels are significantly higher in infected cells with defective measles virus. IL-29 expression is thought to be regulated at post-transcriptional level and miRNA-548 family targets the 3'UTR of the IFNL1 gene. Impaired immune system has an important role as well as viral factors in SSPE. The aim of our study investigates whether IL-28B, IL-29 levels and gene polymorphisms contribute to the damaged immune response leading to the development of SSPE. Also possible association of miR-548 family with IL-29 and SSPE is explored. Frequencies of rs12979860, rs8099917, rs30461, serum levels of IL-28B, IL-29 and expression levels of miR-548b, miR-548c, miR-548i are determined at 64 SSPE patients and 68 healthy controls. Serum IL-29 levels are statistically significant higher in SSPE patients. Allele frequencies of rs8099917 are statistically significant higher in SSPE patients and resulted G allele is found to increase 2.183-fold risk of SSPE. The expression levels of miR-548b-5p, miR-548c-5p and miR-548i are found to be statistically significant higher in SSPE patients. Dramatically increased level of IL-29 seen in patient group indicates that the elevated miR-548 expression is compensatory result of the over-activated immune system response. Further studies referred to IL28, IL29 and related miRNA's will be enlightened the pathogenesis of SSPE. © 2018, 2014-93106430-01, This work was supported by grants from the Bulent Ecevit University, Turkey (Project number: 2014-93106430-01 ).
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- 2018
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12. The relationship among androgens, insulin resistance and ghrelin polymorphisms in post-adolescent male patients with severe acne vulgaris
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Janserey Batu, Ahmet Kara, Sevim Karakas-Celik, Suzan Demir Pektas, Duygu Yazgan Aksoy, Deniz Duman, Nese Cinar, Acibadem University Dspace, MÜ, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü, Demir Pektaş, Suzan, Çınar, Neşe, and Kara, Ahmet
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medicine.medical_specialty ,medicine.drug_class ,post-adolescent ,Dermatology ,Pathogenesis ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Insulin resistance ,Polymorphism (computer science) ,Post-adolescent ,Internal medicine ,insulin resistance ,Genotype ,medicine ,Immunology and Allergy ,acne vulgaris ,Acne vulgaris ,Acne ,Original Paper ,medicine.diagnostic_test ,business.industry ,medicine.disease ,Androgen ,RC31-1245 ,Ghrelin ,Endocrinology ,RL1-803 ,ghrelin ,business ,Lipid profile ,ghrelin polymorphisms ,Ghrelin polymorphisms - Abstract
Introduction: Ghrelin has anti-inflammatory and immunomodulatory activities. Data about the role of ghrelin and ghrelin polymorphisms in the development of acne vulgaris in post-adolescent male patients are limited. Aim: To evaluate the role of serum androgens, insulin resistance, ghrelin and ghrelin polymorphisms in severe acne vulgaris. Material and methods: Thirty-five post-adolescent male patients with a mean age of 28.0 ±5.4 years and 33 age and BMI-matched controls were enrolled. Serum androgens, lipids, insulin sensitivity parameters and ghrelin levels were determined. The PCR method was used for GHRL polymorphisms (rs27647, rs696217 and rs34911341 genotypes). Results: Patients had similar anthropometric measures to controls, except a significantly higher WHR in patients (0.92 ±0.06 vs. 0.86 ±0.08, p < 0.05). Also, FPG, HOMA-IR values, lipid profile and serum androgen levels were similar. Interestingly, patients had significantly lower ghrelin levels than controls (4.5 ±5.8 vs. 101.2 ±86.5 pg/ml, p < 0.001). The frequencies of rs696217 and rs34911341 genotypes were similar whereas the distribution of rs27647 alleles was significantly different between the groups (p < 0.05). GA and GG genotypes of GHRL rs27647 polymorphism indicated an increased risk of developing acne vulgaris (OR = 11.156, 95% CI: 2.864–43.464, OR = 5.312, 95% CI: 1.269–22.244, respectively; p < 0.05). Patients with rs27647-AA polymorphism had significantly lower GAGS scores than other groups (AA genotype 6.7 ±14.1 vs. GA genotype 24.6 ±15.7 and GG genotype 19.4 ±17.9, p < 0.001). None of the polymorphisms had a significant effect on metabolic parameters, insulin sensitivity and serum ghrelin levels. Conclusions: Decreased ghrelin levels and GA and GG genotypes of GHRL gene rs27647 polymorphism may have a role in the pathogenesis of acne vulgaris.
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- 2020
13. The effect of FOXO gene family variants and global DNA metylation on RRMS disease
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Öyküm Genç, Gülnihal Kutlu, Ufuk Emre, Yasemin Ünal, Tuba Gökdoğan Edgünlü, and Sevim Karakas Celik
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0301 basic medicine ,Adult ,Male ,DNA repair ,Biology ,Epigenesis, Genetic ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Multiple Sclerosis, Relapsing-Remitting ,Genetics ,medicine ,SNP ,Gene family ,Humans ,Gene ,Multiple sclerosis ,Genetic Variation ,Forkhead Transcription Factors ,General Medicine ,DNA ,Cell cycle ,DNA Methylation ,Middle Aged ,medicine.disease ,030104 developmental biology ,chemistry ,030220 oncology & carcinogenesis ,DNA methylation ,Female - Abstract
Multiple sclerosis is a chronic disease that usually occurs with exacerbations and remissions in young adults, affects the central nervous system white matter in multiple localization, and is thought to be the result of complex interactions of genetic and environmental factors, the most common form is relapsing-remitting MS. Forkhead transcription factors O class (FOXO) are responsible for the regulation of various cellular processes including cell cycle, apoptosis, DNA repair, cellular resistance and metabolism. DNA methylation is such an epigenetic change and has been shown to be associated with almost any biological process. The aim of our study to show the relation between the genetic variants of FOXO3a (rs2253310 rs4966936) and FOXO1 (rs3900833, rs4581585) and global DNA methylation in RRMS. We analyzed DNA obtained from 79 RRMS patients and 104 healthy individuals by PCR-RFLP method for the detection of genetic variants. For the determination of global DNA methylation, results were obtained using ELISA method. The data were evaluated statistically. As a result of our analysis; global DNA methylation is higher in RRMS patients compared to control individuals and it can be effective on the disease. In addition, it has been determined that variants of FOXO3a (rs2253310, rs4966936) and FOXO1 (rs3900833), which have been genotyped, may be effective in disease pathogenesis. These results suggest that DNAmethylation and FOXO gene variants may be effective in neuronal loss in RRMS.
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- 2019
14. Homozygous Ala65Pro Mutation with V89L Polymorphism in SRD5A2 Deficiency
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Sevim Karakas Celik, Tuba Edgünlü, Erdal Eren, Emre Asut, Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı., Asut, Emre, HJH-3690-2023, Zonguldak Bülent Ecevit Üniversitesi, MÜ, Tıp Fakültesi, Temel Tıp Bilimleri Bölümü, and Edgünlü, Tuba
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Male ,Luteinizing hormone ,Gonadectomy ,Turkey ,Endocrinology, Diabetes and Metabolism ,Transcription factor sox ,Reductase ,Gene ,Pediatrics ,law.invention ,Precocious puberty ,0302 clinical medicine ,Endocrinology ,Ala65Pro gene ,Genital system ,Ambiguous genitalia ,Membrane proteins ,Primary amenorrhea ,Medicine ,Clitoromegaly ,Child ,Abnormal karyotype ,Endocrinology & metabolism ,SRD5A2 gene ,Disorder of sex development ,Gonad ,Polymerase chain reaction ,Nuclear magnetic resonance imaging ,Testis determining factor ,030220 oncology & carcinogenesis ,Dihydrotestosterone ,Deficiency ,5-Alpha-Reductase ,Steroid 5alpha reductase ,Human ,Disorders of sex development ,Dutasteride ,5-alpha Reductase Inhibitors ,Oxidoreductases ,Clinical article ,Article ,03 medical and health sciences ,Genetics ,Humans ,Polymorphism ,Chemiluminescence immunoassay ,Infant ,Body weight ,Karyotype 46,XY ,medicine.disease ,Steroid 5alpha reductase 2 ,Body height ,Membrane protein ,Inguinal canal ,Mutation ,Polymorphism, single nucleotide ,School child ,Defect ,Androstanolone ,5-alpha-reductase ,Type-2 ,SRD5A2 protein, human ,Exon ,law ,DNA mutational analysis ,Testosterone ,46,XY Disorders of Sex Development ,46,XY disorders of sex development ,Karyotype 47,XXY ,Genetic analysis ,Breast development ,Original Article ,Female ,Chromosome aberration ,medicine.drug ,Risk ,Adult ,XY disorders of sex development ,Child, preschool ,Endokrinoloji ve Metabolizma ,030209 endocrinology & metabolism ,V89L gene ,Hormone substitution ,Gene mutation ,Enzyme deficiency ,Gene amplification ,Genetic polymorphism ,business.industry ,3-oxo-5-alpha-steroid 4-dehydrogenase ,Follitropin ,Gender dysphoria ,Single nucleotide polymorphism ,Young adult ,Pediatri ,Preschool child ,SRD5A2 ,Pediatrics, Perinatology and Child Health ,business - Abstract
Objective: Deficiency of steroid 5-alpha reductase type 2 (5?RD2) is a rare autosomal recessive disorder caused by mutations in the SRD5A2 gene. A defect in the 5-alpha reductase enzyme, which ensures conversion of testosterone into dihydrotestosterone, leads to disorders of sex development. This study presents the clinical and genetic results of patients with 5?RD2 deficiency. Methods: 5?RD2 deficiency was detected in 6 different patients from 3 unrelated families. All patients were reared as girls. Two of the patients presented with primary amenorrhea, one with primary amenorrhea and rejection of female gender, and the others with masses in their inguinal canals. Chromosome and sex-determining region Y (SRY) gene analyses were performed in all patients. Additionally, five exons of the SRD5A2 gene were amplified with polymerase chain reaction in the obtained DNA samples and evaluated. Results: While 46,XY was identified in 5 patients, 47,XXY was detected in one patient. The SRY gene was positive in all patients. The p.Ala65Pro (c193G>C) mutation and V89L polymorphism were observed in exon 1 of the SRD5A2 gene in all patients. Conclusion: Identification of this mutation and polymorphism is a significant indicator of presence of 5?RD2 deficiency in Southeastern Turkey, a geographical region where consanguineous marriages are also highly common. © Journal of Clinical Research in Pediatric Endocrinology, Published by Galenos Publishing.
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- 2016
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15. Higher Levels of Serum TLR2 and TLR4 in Patients with Hashimoto's Thyroiditis
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Murat Can, Gunes Cakmak Genc, Ahmet Dursun, Dilek Arpaci, Tugba Aktas, and Sevim Karakas Celik
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0301 basic medicine ,Adult ,Male ,Adolescent ,Endocrinology, Diabetes and Metabolism ,Single-nucleotide polymorphism ,Hashimoto Disease ,medicine.disease_cause ,Polymorphism, Single Nucleotide ,Thyroiditis ,Autoimmunity ,Proinflammatory cytokine ,Pathogenesis ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Gene Frequency ,medicine ,Immunology and Allergy ,Humans ,Genetic Predisposition to Disease ,Allele frequency ,Aged ,030203 arthritis & rheumatology ,business.industry ,Middle Aged ,medicine.disease ,Toll-Like Receptor 2 ,Up-Regulation ,Toll-Like Receptor 4 ,TLR2 ,030104 developmental biology ,Case-Control Studies ,Immunology ,TLR4 ,Female ,business ,Biomarkers - Abstract
Objective: Hashimoto’s thyroiditis (HT) is an autoimmune disorder caused by the interaction between genes and environmental triggers. HT is the most common endocrine disorder, as well as the most common cause of hypothyroidism. Autoimmunity plays a crucial role in the pathogenesis of HT and recent studies suggest that Toll-like receptor (TLR) signals lead to increased inflammatory response. The aim of our study is to investigate whether TLR-2 and TLR-4 levels and gene polymorphisms contribute to the damaged immune response leading to HT. Methods: Using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method, single-nucleotide polymorphisms (SNPs) of TLR2 gene Arg677Trp, Arg753Gln, 196-174 del and TLR4 gene Asp299Gly, Thr399Ile were studied in 100 patients with HT and 100 healthy controls. Also, we investigated serum levels of TLR-2 and TLR-4 in the immunopathogenesis of HT. TLR-2 and TLR-4 serum levels were found to be significantly higher in HT patients than the control group. However, no statistical significance was found between patient and control groups in terms of genotype frequencies and allele frequency distribution of TLR2 gene Arg677Trp, Arg753Gln, 196-174 del and TLR4 gene Asp299Gly, Thr399Ile polymorphisms. Result: TLR2 gene Arg677Trp, Arg753Gln, 196-174 del and TLR4 gene Asp299Gly, Thr399Ile polymorphism do not appear to have a role in the development of HT disease. However, in our study, serum levels of TLR-2 and TLR-4 were found to be higher in HT patients than control groups Conclusion: These findings suggest that TLR-2 and TLR-4 play an important role in the immunopathologic mechanism of disease by causing an increase in proinflammatory response.
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- 2019
16. Novel SNARE complex polymorphisms associated with Multiple Sclerosis: Signs of Synapthopathy in Multiple Sclerosis
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Sevim Karakas Celik, Yuksel Erdal, Tuba Gökdoğan Edgünlü, Osman Özgür Yalın, Ufuk Emre, Aysun Ünal, Taskin Gunes, MÜ, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,Male ,Temel Sağlık Hizmetleri ,SNARE proteins ,Multiple Sclerosis ,Adolescent ,Synaptosomal-Associated Protein 25 ,Turkey ,Vesicle-Associated Membrane Protein 2 ,lcsh:Medicine ,Biology ,Polymerase Chain Reaction ,Synaptotagmin 1 ,Klinik Nöroloji ,polymorphism ,Synaptotagmins ,Genotype ,medicine ,Syntaxin ,Humans ,Allele ,Sağlık Bilimleri ve Hizmetleri ,Polymorphism ,Genel ve Dahili Tıp ,Cerrahi ,Genetics ,Polymorphism, Genetic ,Multiple sclerosis ,Haplotype ,lcsh:R ,Tıbbi Araştırmalar Deneysel ,General Medicine ,Tıbbi İnformatik ,Middle Aged ,medicine.disease ,nervous system ,Case-Control Studies ,Synaptopathy ,Original Article ,Female ,SNARE complex ,SNARE Proteins - Abstract
GUNES, TASKIN/0000-0002-9343-0573; KARAKAS CELIK, Sevim/0000-0003-0505-7850 WOS: 000467416800005 PubMed ID: 30582321 Background: It is well known that axonal degeneration plays a role in disability in patients with multiple sclerosis, and synaptopathy has recently become an important issue. Aims: To investigate the possible roles of selected synaptic and presynaptic membrane protein genetic polymorphisms (VAMP2, SNAP-25, synaptotagmin, and syntaxin 1A) in patients with multiple sclerosis. Study Design: Case-control study. Methods: A total of 123 patients with multiple sclerosis and 192 healthy controls were included. The functional polymorphisms of specific SNARE complex proteins (VAMP2, synaptotagmin XI, syntaxin 1A, and SNAP-25) were analyzed by polymerase chain reaction. Results: Significant differences were detected in the genotype and allele distribution of 26-bp Ins/Del polymorphisms of VAMP2 between patients with multiple sclerosis and control subjects; Del/Del genotype and Del allele of VAMP2 were more frequent in patients with multiple sclerosis (p=0.011 and p=0.004, respectively). Similarly, Ddel polymorphism of SNAP-25 gene C/C genotype (p=0.059), syntaxin 1A T/C and C/C genotypes (p=0.005), and synaptotagmin XI gene C allele (p=0.001) were observed more frequently in patients with multiple sclerosis. CC, syntaxin rs1569061 1A gene for 33-bp promoter region TC haplotypes, and synaptotagmin XI gene were found to be associated with an increased risk for multiple sclerosis (p=0.012). Similarly, GC haplotype for rs3746544 of SNAP-25 gene and rs1051312 of SNAP-25 gene were associated with an increased risk for multiple sclerosis (p=0.022). Conclusion: Genetic polymorphisms of SNARE complex proteins, which have critical roles in synaptic structure and communication, may play a role in the development of multiple sclerosis.
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- 2018
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17. Partial trisomy 4q and partial monosomy 9p in a girl with choanal atresia and various dysmorphic findings
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Gunes Cakmak-Genc, İbrahim Etem Pişkin, Ahmet Dursun, Sevim Karakas-Celik, and Zonguldak Bülent Ecevit Üniversitesi
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Pathology ,medicine.medical_specialty ,Monosomy ,media_common.quotation_subject ,DNA Mutational Analysis ,Abnormal Karyotype ,Trisomy ,Choanal atresia ,Biology ,Choanal Atresia ,otorhinolaryngologic diseases ,Genetics ,medicine ,Humans ,Abnormalities, Multiple ,Girl ,Hypertelorism ,media_common ,Partial Trisomy ,Infant, Newborn ,Chromosome ,Karyotype ,General Medicine ,medicine.disease ,High arched palate ,Female ,Chromosome Deletion ,Chromosomes, Human, Pair 4 ,medicine.symptom ,Chromosomes, Human, Pair 9 - Abstract
We report a new-born girl with partial trisomy of 4q28-qter and partial monosomy of 9p24-9ter. Our patient has choanal atresia, hypertelorism, wide nasal bridge, high arched palate, discrete nipples, heart defects, myoclonic seizures and various dysmorphic findings. Standard chromosomal analysis with G-banding with Trypsin-Giemsa revealed 46,XX,der(9)t(4;9)(q28;p24) resulting from the mother's t(4,9) (q28;p24) karyotype. Deletions of the terminal part of 9p and partial trisomy of chromosome 4q are rare chromosomal alterations. To our knowledge, this is the first report of choanal atresia in a patient with a partial trisomy of 4q28-qter and partial monosomy 9p24-9ter combination, which were detected by integrated cytogenetic and genomic analysis. © 2015.
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- 2015
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18. Interleukin 18 gene polymorphism is a risk factor for multiple sclerosis
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Salih Cicek, Ufuk Emre, Zehra Safi Oz, Aysun Ünal, Ahmet Dursun, Fatih Mehmet Keni, Sevim Karakas Celik, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,Male ,Turkey ,Single-nucleotide polymorphism ,Biology ,Polymorphism, Single Nucleotide ,Proinflammatory cytokine ,Multiple sclerosis ,Risk Factors ,Genotype ,Genetics ,Humans ,Genetic Predisposition to Disease ,Polymorphism ,Promoter Regions, Genetic ,Cytokine ,Molecular Biology ,Genotyping ,Alleles ,Genetic Association Studies ,Haplotype ,Interleukin-18 ,Interleukin ,Interleukin 18 ,General Medicine ,Middle Aged ,Haplotypes ,Immunology ,Female ,Gene polymorphism - Abstract
Proinflammatory cytokines with immunosuppressive properties play an important role in the pathogenesis of multiple sclerosis (MS). Interleukin 18 (IL-18) is one of the most important innate cytokines produced from macrophages in the early stages of the inflammatory immune response. The purpose of this study was to determine whether there was any relationship between IL18 gene polymorphisms and MS. IL18 genotyping were performed in 101 MS patients and 164 control subjects by using the PCR-restriction fragment length polymorphism (PCR-RFLP) method. The frequency of MS patients with the CC genotype of the IL18 gene at position -137 was significantly higher than with the GG genotype [p = 0.01, odds ratio (OR) 3.17]. In haplotype analysis of two SNPs in the IL18 gene, frequency of the CC haplotype was significantly higher in MS patients (p = 0.002, OR 3.0). However, the genotype distribution of the IL18 -607 C/A polymorphism in the MS patient group was not significantly different from that of the control group. These data suggest that IL18 gene polymorphisms at position -137 might be a genetic risk factor for MS in the Turkish population. © 2014 Springer Science+Business Media.
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- 2014
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19. The G1057D polymorphism of insulin receptor substrate-2 associated with gestational diabetes mellitus
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Sevim Karakas Celik, Filiz Çayan, Lokman Ayaz, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,medicine.medical_specialty ,Genotype ,GDM ,endocrine system diseases ,Insulin receptor substrate-2 ,Endocrinology, Diabetes and Metabolism ,Type 2 diabetes ,Polymorphism, Single Nucleotide ,Endocrinology ,Insulin resistance ,Gene Frequency ,Pregnancy ,Polymorphism (computer science) ,Diabetes mellitus ,Internal medicine ,G1057D polymorphism ,medicine ,Humans ,Genetic Predisposition to Disease ,Alleles ,Genetic Association Studies ,biology ,Obstetrics and Gynecology ,medicine.disease ,Gestational diabetes ,Diabetes, Gestational ,Insulin receptor ,Insulin Receptor Substrate Proteins ,biology.protein ,Female ,Restriction fragment length polymorphism - Abstract
Objective: The Gly1057D polymorphism in the insulin receptor substrate-2 (IRS-2) gene has been reported to be associated with insulin resistance, obesity and type 2 diabetes; little is known about its possible association with gestational diabetes mellitus (GDM). To investigate this association we determined the distribution of its genotypes and frequency of alleles in GDM patients. Materials and methods: The study population consisted of 94 subjects; among them were 44 patients with GDM and 50 healthy controls without diabetes. Genomic DNA was extracted from the leukocyte by high pure polymerase chain reaction (PCR) template preparation kit. Genetic polymorphism of IRS-2 G1057D was detected by using PCR-based restriction fragment-length polymorphism (RFLP). Results: For IRS-2 G1057D polymorphism, there was no significant difference in genotype distribution between GDM patients and controls. The risk for GDM was 2.97 times higher (95% CI: 0.89-9.93, p=0.076) in the individuals with the IRS-2 DD genotype compared to the GG genotype. Also individuals with the IRS-2 D allele had a significantly higher risk of GDM compared with individuals with the IRS-2 G allele, with a relative risk of 1.86 (95% CI: 1.02-3.37, p=0.042) for cases compared with population controls. Conclusion: These results suggest that IRS-2 1057D allele may be associated with GDM. © 2014 Informa UK Ltd.
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- 2014
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20. Association of Interleukin 18, Interleukin 2, and Tumor Necrosis Factor Polymorphisms with Subacute Sclerosing Panencephalitis
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Gunes Cakmak Genc, Sevim Karakas-Celik, Mustafa Calik, İbrahim Etem Pişkin, Mahmut Abuhandan, Ebru Kolsal, Akin Iscan, Zonguldak Bülent Ecevit Üniversitesi, and İŞCAN, AKIN
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Male ,Interleukin 2 ,Adolescent ,Single-nucleotide polymorphism ,Polymorphism, Single Nucleotide ,Subacute sclerosing panencephalitis ,Measles virus ,Gene Frequency ,Genotype ,Odds Ratio ,Genetics ,medicine ,Humans ,Genetic Predisposition to Disease ,Child ,Molecular Biology ,biology ,Tumor Necrosis Factor-alpha ,fungi ,Interleukin-18 ,virus diseases ,Interleukin ,Cell Biology ,General Medicine ,medicine.disease ,biology.organism_classification ,Virology ,nervous system diseases ,Haplotypes ,Case-Control Studies ,Immunology ,Interleukin-2 ,Female ,Interleukin 18 ,Tumor necrosis factor alpha ,Subacute Sclerosing Panencephalitis ,medicine.drug - Abstract
Subacute sclerosing panencephalitis (SSPE) is a progressive inflammatory and degenerative disorder of the central nervous system. The measles virus (MV) and host and environmental factors are involved in the development of SSPE, but the precise mechanism by which the MV causes SSPE is still unknown. Studies have indicated that in SSPE patients, specific polymorphisms of certain genes are most likely involved in impairing the host's ability to eradicate the MV. The purpose of our study was to elucidate the role of polymorphisms in the genes encoding interleukin (IL)-2, IL-18, and tumor necrosis factor alpha (TNF-?) in the development of SSPE. Using the polymerase chain reaction with sequence-specific primers, the single-nucleotide polymorphisms (SNPs) of the promoter regions of IL-2 (-330), TNF-? (-308), and IL-18 (-137 and -607) were studied in 54 patients with SSPE and 72 healthy controls. The frequency of SSPE patients with the AA genotype of IL-18 at position -607 was significantly higher than the frequency of those with the CC genotype (p
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- 2013
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21. Serum paraoxonase level and paraoxonase polymorphism in patients with acromegaly
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Taner Bayraktaroglu, Esra Ermiş, Ayse C. Hamamcioglu, Fatih Kuzu, Dilek Arpaci, Ahmet Dursun, Furuzan Kokturk, Sevim Karakas Celik, Murat Can, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,Male ,medicine.medical_specialty ,Physiology ,Clinical Biochemistry ,030209 endocrinology & metabolism ,030204 cardiovascular system & hematology ,Biochemistry ,Polymorphism, Single Nucleotide ,Pathogenesis ,03 medical and health sciences ,chemistry.chemical_compound ,Young Adult ,0302 clinical medicine ,Risk Factors ,Diabetes mellitus ,Internal medicine ,Acromegaly ,medicine ,Humans ,In patient ,Polymorphism ,Insulin-Like Growth Factor I ,Serum paraoxonase ,Aged ,Polymorphism, Genetic ,Triglyceride ,biology ,business.industry ,Aryldialkylphosphatase ,Biochemistry (medical) ,Paraoxonase ,Cell Biology ,Original Articles ,Middle Aged ,medicine.disease ,Lipids ,Lipoproteins, LDL ,Endocrinology ,chemistry ,biology.protein ,lipids (amino acids, peptides, and proteins) ,Female ,business ,Lipoproteins, HDL ,Lipoprotein - Abstract
Background: Acromegalic patients have increased cardiometabolic risk factors due to an elevation of growth hormone (GH) levels. Human serum paraoxonase (PON), a high-density lipoprotein (HDL)-related enzyme, is one of the major bioscavengers and decreases the oxidation of low-density lipoprotein (LDL), a key regulator in the pathogenesis of atherosclerosis. In this study, we investigated a potential relationship between serum PON levels or PON polymorphisms and acromegaly. Methods: A total of 48 acromegalic patients and 44 healthy controls were included in this study. Serum GH levels, insulin-like growth factor-1 levels and lipid profiles were measured. Serum PON levels, as well as PON 1 L55M and Q192R gene polymorphisms, were examined. Results: No significant differences were found in terms of age, gender, presence of diabetes, serum LDL cholesterol (LDL-C), HDL-C, or triglyceride levels between the case and control groups (P > 0.05). A statistically significant difference was found in serum PON levels between the cases and controls (P = 0.007). The median serum PON level was 101 ± 63.36 U/l in the case group and 63 ± 60.50 U/l in the control group. There was a significant correlation between serum PON levels and IGF-1 levels (P = 0.004, r = 0.319); however, no significant differences were found in PON1 L55M and PON Q192R polymorphisms between the patients and controls (P = 0.607 and P = 0.308, respectively). In addition, no significant differences were found in serum PON levels in acromegalic patients who were and were not in remission (P = 0.385), nor between those with PON1 L55M and Q192R polymorphisms (P = 0.161 and P = 0.336, respectively). Conclusions: Elevated serum PON levels were detected in acromegalic patients, independently of their remission status. This suggests protective effects for cardiometabolic risk parameters. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
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- 2016
22. Glutathione S-Transferase Z1 Gene Polymorphism in Turkish Population
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Nurcan Aras Ateş, Lulufer Tamer-Gumus, and Sevim Karakas Celik
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Genetics ,Turkish population ,business.industry ,Medicine ,General Medicine ,Gene polymorphism ,GLUTATHIONE S-TRANSFERASE Z1 ,business - Published
- 2012
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23. Rare Types of Turner Syndrome: Clinical Presentation and Cytogenetics in Five Cases
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Gülen Aslan Uyaniker, Umut Kutlu Dilek, Zuhal Mert Altintas, Etem Akbaş, Sevim Karakas Celik, Ali Delibaş, Badel Aslan Mamur, Samim Özen, and Zonguldak Bülent Ecevit Üniversitesi
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Pathology ,medicine.medical_specialty ,Pediatrics ,Isochromosome X ,Mosaicism ,Biochemistry (medical) ,Clinical Biochemistry ,Cytogenetics ,Turner Syndrome ,Chromosomal anomaly ,Biology ,Turner's syndrome ,medicine.disease ,Turner syndrome ,medicine ,X deletion ,Presentation (obstetrics) - Abstract
Turner Syndrome occurs in one out of every 5000 live female births and the diagnosis is usually based on the clinical presentation. In the last 9 years, 17 of 1681 patients who underwent cytogenetic evaluation to investigate uncertain chromosomal anomaly had Turner syndrome. Ten of the patients were the 45,X (classic) type, 2 patients were 46,X,i(Xq), 1 patient was 46,X,der(X)del(X)(p22.1) del(X)(q26), and 4 were mosaic (2 were 45,X/46,XY and the other 2 were 45,X/47,XXX). Detailed clinical evaluations of these patients are presented. © 2012 by The American Society for Clinical Pathology.
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- 2012
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24. The Neuropathology of Internet Addiction
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Ulas M. Camsari, Tuba Gökdoğan Edgünlü, Sevim Karakas-Celik, Ömer Şenormancı, and Zonguldak Bülent Ecevit Üniversitesi
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Impulsivity ,medicine.medical_specialty ,Internet addiction ,business.industry ,Addiction ,media_common.quotation_subject ,IAD ,Neuroimaging ,Neuropathology ,Internet addiction disorder ,Reward system ,medicine ,Etiology ,The Internet ,medicine.symptom ,business ,Psychiatry ,Psychology ,media_common - Abstract
"Internet addiction" refers to excessive Internet use that causes significant psychological and social disturbance along with functional impairment. The etiology of Internet addiction is controversial. It has been classified within addictive behaviors and impulse control disorders and it is suggested that trait impulsivity could be used as a marker for predisposition to Internet addiction disorder (IAD). A number of studies have suggested that patients with IAD demonstrated impaired error-monitoring ability compared to healthy controls. IAD is associated with impaired executive control, which is linked to the inability to inhibit brain activation. The mesolimbic reward system is thought to play a crucial role in the development and maintenance of substance use disorders. It was shown that enhanced reward sensitivity and decreased loss sensitivity are correlated with IAD compared to healthy controls. Neuroimaging studies reveal structural changes in the brain of individuals with IAD. Microstructural evidence in gray and white matter obtained from studies further reveal the underlying neural mechanisms of IAD. A variety of gene polymorphisms have been found to be associated with predisposition to IAD. Evidence is still limited in this area and further research is needed to better understand the neuropathology of Internet addiction. © 2016 Elsevier Inc. All rights reserved.
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- 2016
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25. The relation of PON1-L55M gene polymorphism and clinical manifestation of Behcet's disease
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Sevim Karakas-Celik, Salih Cicek, Cevdet Altinyazar, Tuna Sezer, Ahmet Dursun, and Fatih Mehmet Keni
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Adult ,Central Nervous System ,Male ,Risk ,Turkey ,Mucocutaneous zone ,Behcet's disease ,Eye ,Polymorphism, Single Nucleotide ,Severity of Illness Index ,General Biochemistry, Genetics and Molecular Biology ,Pathogenesis ,Gene Frequency ,Odds Ratio ,Humans ,Medicine ,Genetic Predisposition to Disease ,Allele frequency ,Alleles ,biology ,Aryldialkylphosphatase ,business.industry ,Behcet Syndrome ,Case-control study ,Paraoxonase ,Middle Aged ,medicine.disease ,PON1 ,Case-Control Studies ,Immunology ,biology.protein ,Female ,Joints ,Gene polymorphism ,business - Abstract
Purpose Behcet's disease is a multisystem disease characterized by recurrent oral and genital ulcers, relapsing uveitis, mucocutaneous, articular, gastrointestinal, neurologic, and vascular manifestations. Paraoxonase is believed to play an important role in protection of LDL and HDL particles from oxidation, in antioxidant effect against lipid peroxidation on cellular membranes, and in anti-inflammatory process. Lipid peroxidation and free oxygen radicals have been thought to play a role in pathogenesis of BD. The association of paraoxonase gene polymorphisms with Behcet's Disease in a group of Turkish patients with clinical manifestations and healthy controls has been investigated. Patients and methods Paraoxonase (PON-1-L55M) gene polymorphism was investigated in 50 Behcet patients and 50 healthy individuals with a PCR/RFLP method. Results There were significant differences between patients and the control group in allele frequencies of the PON1 L55M polymorphism (p=0.04). Also, when patients were compared with the control group according to clinical manifestations, this statistical significance was getting sharper. Compared with the PON55 L allele, the M allele was associated with greater than 3.5 fold (OR 3.5, 95% CI 1.3-8.9) increased risk of ocular (OR 2.4, 95% CI 1.1-5.3), 2.4 fold joint and 3.1 fold (OR 3.1, 95% CI 1.1-8.4) central nervous system manifestations of BD. Conclusion The PON L55M gene polymorphism seemed to play a role in the pathogenesis of BD.
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- 2014
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26. Investigation of IL-1 Beta, IL-1 Receptor Antagonist and IL-8 Gene Polymorphisms in Patients with Chronic Hepatitis B and C
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Gülay Börekçi, Serap Yalin, Sevim Karakas Celik, Özlem Kandemir, Nurcan Aras, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,Male ,Microbiology (medical) ,Cirrhosis ,Adolescent ,Hepatitis C virus ,Interleukin-1beta ,Single-nucleotide polymorphism ,medicine.disease_cause ,Pathogenesis ,Young Adult ,Hepatitis B, Chronic ,Gene Frequency ,Risk Factors ,medicine ,Humans ,Aged ,Polymorphism, Genetic ,General Immunology and Microbiology ,business.industry ,Interleukin-8 ,Receptors, Interleukin-1 ,DNA ,Hepatitis C, Chronic ,Middle Aged ,Hepatitis B ,medicine.disease ,Genotype frequency ,Infectious Diseases ,Interleukin 1 receptor antagonist ,Case-Control Studies ,Hepatocellular carcinoma ,Immunology ,Female ,business - Abstract
WOS: 000336195500008, PubMed: 24819264, The host immune response is closely related to the prognosis of disease and viral persistence in hepatitis B (HBV) and hepatitis C virus (HCV) infections. Althought it is well known that cytokines and genetic factors play important roles in the pathogenesis of chronic HBV and HCV infections, the underlying mechanisms are not fully understood. This study was conducted to determine the role of interleukin (IL)-1 beta, IL-1 receptor antagonist (1L-1RA) and IL-8 gene polymorphisms in chronic hepatitis B and C infections. A total of 361 subjects, 171 with chronic hepatitis B (62 female, 109 male; age range: 18-74 yrs) and 104 with chronic hepatitis C (63 female, 41 male; age range: 25-79 yrs), and a control group of 86 healthy subjects (41 female, 45 male; age range: 18-72 yrs) were included in the study. Following the DNA extractions from peripheral blood leukocytes of the study groups, single nucleotide polymorphisms of 1L-1 beta -31, -511, +3954; IL-1RA and IL-8 -251, -353, -738, -845 gene regions were investigated by using specific primers with real-time PCR method. It was found that the genotype frequency of IL-8 -251 AT (OR: 7.895, p= 0.003) and IL-8 -738 TA (OR: 6.317, p= 0.007) in patients with chronic hepatitis B and the genotype frequency of IL-1 beta -31 CT (OR: 6.757, p= 0.001), IL-1 beta -511 CT (OR: 4.060, p= 0.004), IL-8 -251 AT, (OR: 13.622, p= 0.001), IL-8 -738 TA (OR: 14.058, p= 0.001), and IL-8 -845 TC (OR: 2.539, p= 0.004) in patients with chronic hepatitis C was significantly higher than the control group. When the allelic frequency was compared between chronic hepatitis B patients and the control group, it was determined that IL-1 beta +3954 T allel increased the disease risk 1.5 times (p< 0.05), however, no statistically significant difference was detected for the other allels. It was also determined that IL-8 -845 C allel increased the disease risk 0.6 times in chronic hepatitis C (p< 0.05) and no statistically significant difference was detected for the other allels (p> 0.05). In conclusion, IL-1 beta -31, -511 and IL-8 -251, -738, -845 gene polymorphisms may play a role in the chronicity of hepatitis B and C infection. In order to determine the importance of this cytokine polymorphisms in hepatitis B and hepatitis C virus infections, large-scale studies with different patient groups such as carriers, chronic hepatitis, cirrhosis, and hepatocellular carcinoma should be conducted to elucidate the molecular mechanisms underlying the disease process.
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- 2014
27. Genetic variants of synaptic vesicle and presynaptic plasma membrane proteins in idiopathic generalized epilepsy
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Mustafa Tahsin Yilmaz, Ayşe Sözen, Sevim Karakas Celik, Esin Sakalli Cetin, Tuba Gökdoğan Edgünlü, Nigar Yilmaz, Gülser Karadaban Emir, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,Male ,endocrine system ,Idiopathic generalized epilepsy ,Syntaxin 1A ,Adolescent ,Synaptosomal-Associated Protein 25 ,Vesicle-Associated Membrane Protein 2 ,Syntaxin 1 ,Biology ,Biochemistry ,Synaptic vesicle ,Synaptotagmins ,Genotype ,medicine ,Humans ,Allele ,Molecular Biology ,Gene ,Genetic Association Studies ,Genetics ,VAMP2 ,Cell Biology ,medicine.disease ,Molecular biology ,Membrane protein ,nervous system ,SNAP-25 ,Epilepsy, Generalized ,Female ,Synaptic Vesicles ,Synaptotagmin XI ,Restriction fragment length polymorphism - Abstract
Background: The aim of this study was to analyze the role of the genetic variants of two synaptic vesicle proteins (VAMP2 and Synaptotagmin XI) and two presynaptic plasma membrane proteins (Syntaxin 1A and SNAP-25) in patients with idiopathic generalized epilepsy (IGE). Method: Eighty-five patients with IGE and 93 healthy subjects were included in the study. We analyzed the functional polymorphisms of VAMP2, Synaptotagmin XI, Syntaxin 1A and SNAP-25 genes with polymerase chain reaction and restriction fragment length polymorphism methods. Results: In the patients with IGE, significant differences alleles and genotypes of 26-bp Ins/Del polymorphism of the VAMP2 gene and the 33-bp promoter region of Synaptotagmin XI were observed, however no associaton was found regarding Intron 7 rs1569061 of Syntaxin 1A gene, MnlI rs3746544 and DdeI rs1051312 polymorphisms of SNAP-25 gene compared with healthy subjects. Carriers of the C allele of Synaptotagmin XI had worse measures compared with the T allele of Synaptotagmin XI. In the haplotype analysis, the frequency of the T alleles of rs1569061 and of the C alleles of the 33-bp promoter region of Synaptotagmin XI was found to be significantly higher in patients with IGE as compared with the healthy subjects. Conclusion: The genetic variations of VAMP2, Synaptotagmin XI might be indication of the relationship between these genes and IGE. © 2014 Informa Healthcare USA, Inc. All rights reserved: reproduction in whole or part not permitted.
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- 2014
28. IRS-2 G1057D polymorphism in Turkish patients with colorectal cancer
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Erdinc Yalin, Sevim Karakas Celik, Serap Yalin, Cengiz Ateş, Meral Urhan Kucuk, S. Sebnem Ozkal, Nurcan Aras Ateş, Emel Hulya Yukseloglu, Mehmet Berköz, Zonguldak Bülent Ecevit Üniversitesi, and Çukurova Üniversitesi
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Original Paper ,Turkish population ,Turkey ,business.industry ,Turkish ,Colorectal cancer ,Gastroenterology ,Bioinformatics ,medicine.disease ,Molecular medicine ,language.human_language ,Genotype frequency ,Colon cancer ,language ,Medicine ,Gene polymorphism ,Allele ,Restriction fragment length polymorphism ,Polymorphism ,business ,IRS-2 - Abstract
Introduction: Gene polymorphisms have a broad range of analysis, but are of particular use in molecular medicine due to their potential in revealing the genetic tendency in diseases such as cancer, heart attack etc. These studies basically depend on mutations that can be detected by proper techniques. The genes coding the insulin receptor substrate (IRS) proteins are among the most widely analysed polymorphisms in various cancer types, in which a G1057D mutation is seen. Aim: To determine the risk of colon cancer by analysing the IRS-2 gene polymorphism in Turkish patients. Material and methods: A total of 161 newly diagnosed colorectal cancer patients were analysed and compared to 197 unrelated healthy controls. A polymerase chain reaction-based restriction fragment length polymorphism method was carried out. Results: No differences were observed between the patient and control groups for both allele and genotype frequencies of the IRS-2 G1057D gene. Conclusions: Our results demonstrated that IRS-2 G1057D polymorphism is not associated with colorectal cancer in the Turkish population. This research is a preliminary and original study in Turkish patients with colorectal cancer. It also provides population-level genetic data on IRS-2 in the Turkish population. Further studies should be performed on larger number of patients and controls for more reliable results about the genetic tendency in colorectal cancer in Turkey. The study is a collaborative work of different universities and scientists.
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- 2014
29. Genetic variants of estrogen beta and leptin receptors may cause gynecomastia in adolescent
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Tuba Gökdoğan Edgünlü, Sevim Karakas Celik, Hüseyin Anıl Korkmaz, Erdal Eren, Esin Sakalli Cetin, Esra Deniz Papatya Cakir, Korcan Demir, and Zonguldak Bülent Ecevit Üniversitesi
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Male ,Leptin ,medicine.medical_specialty ,Adolescent ,Genotype ,Turkey ,medicine.drug_class ,Estrogen receptor ,Aromatase ,Internal medicine ,Genetics ,medicine ,Estrogen Receptor beta ,Humans ,Genetic Predisposition to Disease ,Testosterone ,Polymorphism ,Child ,skin and connective tissue diseases ,Estrogen receptor beta ,Polymorphism, Genetic ,Leptin receptor ,Estradiol ,biology ,Puberty ,Estrogen Receptor alpha ,Estrogens ,General Medicine ,medicine.disease ,Estrogen ,Endocrinology ,Haplotypes ,Gynecomastia ,Case-Control Studies ,biology.protein ,Receptors, Leptin ,Estrogen receptor alpha ,hormones, hormone substitutes, and hormone antagonists - Abstract
Objective: Gynecomastia is a benign breast enlargement in males that affects approximately one-third of adolescents. The exact mechanism is not fully understood; however, it has been proposed that estrogen receptors and aromatase enzyme activity may play important roles in the pathogenesis of gynecomastia. While many studies have reported that aromatase enzyme (CYP19) gene polymorphism is associated with gynecomastia, only one study has shown a relationship between estrogen receptor (ER) alpha and beta gene polymorphism and gynecomastia. Thus, the aim of this study was to evaluate the relationships between CYP19 (rs2414096), ER alpha (rs2234693), ER beta (rs4986938), leptin (rs7799039), and leptin receptor (rs1137101) gene polymorphisms and gynecomastia. Methods: This study included 107 male adolescents with gynecomastia and 97 controls. Total serum testosterone (T) and estradiol (E2) levels were measured, and DNA was extracted from whole blood using the PCR-RFLP technique. The polymorphic distributions of CYP19, ER alpha, ER beta, leptin and leptin receptor genes were compared. Results: The median E2 level was 12.41 (5.00-65.40) pg/ml in the control group and 16.86 (2.58-78.47) pg/ml in the study group (p.
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- 2014
30. May TLR4 Asp299Gly and IL17 His161Arg polymorphism be associated with progression of primary measles infection to subacute sclerosing panencephalitis?
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Mustafa Calik, Mehmet Fatih Keni, Akin Iscan, İbrahim Etem Pişkin, Ahmet Dursun, Sevim Karakas-Celik, Zonguldak Bülent Ecevit Üniversitesi, and İŞCAN, AKIN
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Male ,Subacute sclerosing panencephalitis ,Adolescent ,Mutation, Missense ,Single-nucleotide polymorphism ,Disease ,Polymorphism, Single Nucleotide ,Measles virus ,Genotype ,Genetics ,medicine ,Humans ,SNP ,TLR2 ,TLR4 ,Child ,Genetic Association Studies ,Karakas-Celik S., Piskin I. E. , Keni M. F. , Calik M., Iscan A., Dursun A., -May TLR4 Asp299Gly and IL17 His161Arg polymorphism be associated with progression of primary measles infection to subacute sclerosing panencephalitis?-, GENE, cilt.547, ss.186-190, 2014 ,Toll like receptors ,biology ,Interleukin-17 ,fungi ,IL17 ,virus diseases ,General Medicine ,medicine.disease ,biology.organism_classification ,Virology ,nervous system diseases ,Toll-Like Receptor 4 ,Case-Control Studies ,Immunology ,Disease Progression ,Female ,IL17A - Abstract
SSPE is a progressive neurological disorder of children. Only some of the children who are infected with measles virus develop SSPE, which supports individual variation. TLR-2 and TLR-4 play an important role in innate immunity by recognizing envelope proteins of MV. Another important cytokine that plays an important role in orchestrating innate immune function is IL-17. The purpose of our study is to elucidate whether the TLR2, TLR4, IL17F and IL17A gene polymorphisms are susceptibility genes for the development of SSPE.Using the PCR-RFLP methods, the single nucleotide polymorphisms of TLR2 (Arg753Gln, Arg677Trp, -. 194 to -. 174 del), TLR4 (Asp299Gly and Thr399Ile) IL17F (His161Arg, Glu126Gly) and IL17A were studied in 54 patients with SSPE and 81 healthy controls.For Asp299Gly polymorphism of the TLR4 gene we found that there were no control individuals who were homozygous carriers of the Gly/Gly genotype, and the risk for SSPE increased at approximately 4.7 fold for the heterozygous carriers of the Asp/Gly genotype (OR 4.727, 95%-CI 1.192-18.742; P. = 0.01), when compared to healthy controls. Also our findings demonstrate that homozygosity for the Arg161 variant of the IL17F His161Arg polymorphism is inversely associated with development of SSPE (OR 0.114 95%-CI 0.026-0.494; P.
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- 2014
31. An in-vitro investigation of the effect of perfluorooctane sulphonate on cell lines of embryonic origin
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Nurcan Aras, Sevim Karakas-Celik, and Zonguldak Bülent Ecevit Üniversitesi
- Subjects
Cell Membrane Permeability ,Apoptosis ,In Vitro Techniques ,Cell Line ,chemistry.chemical_compound ,Genetics ,medicine ,Humans ,Inner mitochondrial membrane ,Molecular Biology ,Embryonic Stem Cells ,Fluorocarbons ,Amnion ,Chemistry ,Caspase 3 ,General Medicine ,Molecular biology ,In vitro ,Perfluorooctane ,Sulfonate ,medicine.anatomical_structure ,Apoptotic Protease-Activating Factor 1 ,Biochemistry ,Alkanesulfonic Acids ,Gene Expression Regulation ,Cell culture ,Caspase3 ,Toxicity ,Mitochondrial Membranes ,Environmental Pollutants ,Apaf-1 ,Perfluorooctane sulphonate - Abstract
Fluorinated organic compounds, such as perfluorooctane sulfonate, are stable chemicals with a wide range of industrial applications. The potential toxicity of perfluorooctane sulfonate is not well characterized, and even less known are the mechanisms underlying its toxic effects. Perfluorooctane sulfonate change of inner mitochondrial membrane permeability has been implicated as a potential mechanism of toxicity. In this study, we research that perfluorooctane sulfonate effects the expression of Apaf1 and Caspase3 genes in the amnion and fetal lung cell line that initiate the cells to undergo apoptosis. The expression of Caspase3 and Apaf1 was determined by using quantitative RT-PCR. In the study there is significant increase in expression of Caspase3 and Apaf1 in amnion and fetal lung cell line exposed to high dose (p < 0.001, p = 0.004). Also there is significant increase in cell lines exposed for a long period of time to perfluorooctane sulfonate (p = 0.001). But no significant increase was seen in the low doses and exposed for a short period of time. In conclusion, apoptotic gene expression is increase in cells exposed perfluorooctane sulfonate by dose dependent manner was determined. So this work is the first study examines the apoptotic effects of perfluorooctane sulfonate in human embryonic cells it will lead the way to the other topical studies. © 2014 Springer Science+Business Media.
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- 2013
32. PD-1 gene polymorphism in children with subacute sclerosing panencephalitis
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İbrahim Etem Pişkin, Ebru Kolsal, Akin Iscan, Mahmut Abuhandan, Mustafa Calik, Sevim Karakas Celik, Zonguldak Bülent Ecevit Üniversitesi, and İŞCAN, AKIN
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Male ,Adolescent ,Genotype ,encephalitis ,Programmed Cell Death 1 Receptor ,subacute sclerosing panencephalitis ,Polymorphism, Single Nucleotide ,Subacute sclerosing panencephalitis ,Measles virus ,Immune system ,Gene Frequency ,children ,Humans ,Medicine ,SNP ,Genetic Predisposition to Disease ,Allele ,PD-1 gene ,Child ,biology ,business.industry ,fungi ,virus diseases ,Electroencephalography ,General Medicine ,Odds ratio ,medicine.disease ,biology.organism_classification ,nervous system diseases ,Pediatrics, Perinatology and Child Health ,Immunology ,Female ,Neurology (clinical) ,Gene polymorphism ,business ,Encephalitis - Abstract
Subacute sclerosing panencephalitis (SSPE) is a progressive inflammatory and degenerative disorder of the central nervous system. Several factors influence the risk of chronic brain infection with the mutant measles virus. However, to date, no pathogenic mechanism that may predispose to SSPE has been determined. Studies have indicated that specific polymorphisms in certain host genes are probably involved in impairing the ability of host immune cells to eradicate the measles virus in SSPE patients. Programmed cell death protein 1 (PD-1), a member of the CD28 family, is a negative regulator of the immune system. The purpose of our study was to investigate whether PD-1 gene polymorphisms affect susceptibility to the development of SSPE in Turkish children. In total, 109 subjects (54 SSPE patients and 55 healthy controls) were genotyped for the PD-1.9 C/T (rs2227982) single-nucleotide polymorphism (SNP). The distributions of T alleles in the PD-1.9 polymorphism in SSPE patients and healthy controls were 2.8 and 10.9%, respectively. There was a statistically significant difference between the groups; the 95% confidence interval (CI) was 0.06 to 0.85 and the odds ratio (OR) was 0.23 (?2 test). Thus, we identified an association between SSPE and the PD-1 rs2227982 gene polymorphism; the frequency of T alleles was higher in controls than in SSPE patients. © Georg Thieme Verlag KG Stuttgart. New York.
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- 2013
33. Functional association of interleukin-18 gene-607 C/A promoter polymorphisms with endometriosis
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Filiz Çayan, Lülüfer Tamer, Sevim Karakas Celik, Lokman Ayaz, Nurcan Aras-Ateş, and Zonguldak Bülent Ecevit Üniversitesi
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Adult ,endometriosis ,medicine.medical_specialty ,Genotype ,Endometriosis ,interleukin-18 ,polymorphism ,Gene Frequency ,Polymorphism (computer science) ,Risk Factors ,Internal medicine ,Medicine ,Humans ,Genetic Predisposition to Disease ,Allele ,Promoter Regions, Genetic ,Gene ,business.industry ,Obstetrics and Gynecology ,Promoter ,Middle Aged ,medicine.disease ,Endocrinology ,Reproductive Medicine ,Population study ,Cytokines ,Interleukin 18 ,Female ,business ,Polymorphism, Restriction Fragment Length - Abstract
WOS: 000285411600076, PubMed: 20797704, This study evaluated for the first time the relationship between interleukin-18 (IL-18) C607A genotypes and endometriosis in 135 women with endometriosis and 84 controls. In the study population, IL-18 -607*A homozygote and A allele were positively correlated with the risk of developing endometriosis or the stage of endometriosis. (Fertil Steril (R) 2011; 95:298-300. (c) 2011 by American Society for Reproductive Medicine.)
- Published
- 2011
34. Lack of association between SOCS3 and SOCS7 polymorphisms and psoriasis
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Merve Özçep, Nilhan Atsü, Nilgün Solak, and Sevim Karakaş Çelik
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cytokine signal suppressors ,polymorphism ,psoriasis ,rs3748726 ,rs4969169 ,SOCS3 ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Abstract Background Psoriasis is a common, chronic, inflammatory skin disease that involves changes taking place as a result of activation of the immune system. Suppressor of cytokine signaling proteins (SOCS) are intracellular proteins that act as endogenous inhibitors of proinflammatory pathways triggered by various cytokines. In this study, the relationship between psoriasis disease and SOCS gene polymorphisms is investigated in relation to the pathogenesis of psoriasis to clarify the psoriasis susceptibility profile. Methods The SOCS3 rs4969169 and SOCS7 rs3748726 polymorphisms were detected using the polymerase chain reaction–restriction fragment length polymorphism (PCR‐RFLP) method. The study was approved by the Clinical Research Ethics Committee of Bulent Ecevit University and performed in accordance with the ethical standards established in the 1964 Declaration of Helsinki and later amendments. All participants were informed of the parameters of the study, and they signed consent forms before being included. Statistical analysis was performed using the SPSS 18.0 (SPSS Inc.) package program. Results For the SOCS3 rs4969169 genotype frequency, the CC/CT genotypes represented 67%/33% in the patient group and 73%/27% in the control group. For the SOCS7 rs3748726 genotype frequency, the TT/TC/CC genotypes made up 89%/9%/1% in the patient group and 91%/8%/1% in the control group. Conclusion The polymorphisms of SOCS3 rs4969169 and SOCS7 rs3748726 were found to have no effective role in the pathogenesis of psoriasis. This is the first study to investigate this topic, and further studies with larger, more ethnically diverse samples are encouraged.
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- 2022
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35. Novel SNARE Complex Polymorphisms Associated with Multiple Sclerosis: Signs of Synaptopathy in Multiple Sclerosis
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Osman Özgür Yalın, Tuba Gökdoğan Edgünlü, Sevim Karakaş Çelik, Novel SNARE Complex Polymorphisms Associated with Multiple Sclerosis: Signs of Synaptopathy in Multiple Sclerosis Osman Özgür Yalın1, Tuba Gökdoğan Edgünlü2, Sevim Karakaş Çelik3, Ufuk Emre1, Taşkın Güneş, and Aysun Eroğlu Ünal
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Multiple sclerosis ,polymorphism ,SNARE proteins ,Medicine - Abstract
Background: It is well known that axonal degeneration plays a role in disability in patients with multiple sclerosis, and synaptopathy has recently become an important issue. Aims: To investigate the possible roles of selected synaptic and presynaptic membrane protein genetic polymorphisms (VAMP2, SNAP-25, synaptotagmin, and syntaxin 1A) in patients with multiple sclerosis. Study Design: Case-control study. Methods: A total of 123 patients with multiple sclerosis and 192 healthy controls were included. The functional polymorphisms of specific SNARE complex proteins (VAMP2, synaptotagmin XI, syntaxin 1A, and SNAP-25) were analyzed by polymerase chain reaction. Results: Significant differences were detected in the genotype and allele distribution of 26-bp Ins/Del polymorphisms of VAMP2 between patients with multiple sclerosis and control subjects; Del/Del genotype and Del allele of VAMP2 were more frequent in patients with multiple sclerosis (p=0.011 and p=0.004, respectively). Similarly, Ddel polymorphism of SNAP-25 gene C/C genotype (p=0.059), syntaxin 1A T/C and C/C genotypes (p=0.005), and synaptotagmin XI gene C allele (p=0.001) were observed more frequently in patients with multiple sclerosis. CC, syntaxin rs1569061 1A gene for 33-bp promoter region TC haplotypes, and synaptotagmin XI gene were found to be associated with an increased risk for multiple sclerosis (p=0.012). Similarly, GC haplotype for rs3746544 of SNAP-25 gene and rs1051312 of SNAP-25 gene were associated with an increased risk for multiple sclerosis (p=0.022). Conclusion: Genetic polymorphisms of SNARE complex proteins, which have critical roles in synaptic structure and communication, may play a role in the development of multiple sclerosis.
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- 2019
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36. Rare Types of Turner Syndrome: Clinical Presentation and Cytogenetics in Five Cases.
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Etem Akbas, Zuhal Mert Altintas, Sevim Karakas Celik, Umut Kutlu Dilek, Ali Delibas, Samim Ozen, Badel Aslan Mamur, and Gülen Aslan Uyaniker
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CHROMOSOME abnormalities ,CHROMOSOME banding ,KARYOTYPES ,SYMPTOMS ,TURNER'S syndrome ,GENETICS - Abstract
Turner Syndrome occurs in one out of every 5000 live female births and the diagnosis is usually based on the clinical presentation. In the last 9 years, 17 of 1681 patients who underwent cytogenetic evaluation to investigate uncertain chromosomal anomaly had Turner syndrome. Ten of the patients were the 45,X (classic) type, 2 patients were 46,X,i(Xq), 1 patient was 46,X,der(X)del(X)(p22.1) del(X)(q26), and 4 were mosaic (2 were 45,X/46,XY and the other 2 were 45,X/47,XXX). Detailed clinical evaluations of these patients are presented. [ABSTRACT FROM AUTHOR]
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- 2012
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37. The role of forkhead box class O3A and SIRT1 gene variants in early-onset psoriasis
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Suzan Demir Pektas, Gursoy Dogan, Tuba Gokdogan Edgunlu, Sevim Karakas-Celik, Esra Ermis, and Nilgun Solak Tekin
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Forkhead box class O3A ,gene polymorphism ,psoriasis ,silent information regulator T1 ,Dermatology ,RL1-803 - Abstract
Background: Psoriasis is a chronic inflammatory skin disorder, which is characterized by a heightened immunological response. Although the immunogenetics of this chronic inflammatory disorder is poorly understood, its expression is known to be dependent on proinflammatory cytokines. It is known that two distinct subtypes of chronic plaque psoriasis: Early-onset psoriasis (EOP) before the age of 40 years and late-onset psoriasis after the age of 40 years. Forkhead box class O3A (FOXO3A) is a transcription factor, which plays an important role in cell-cycle regulation, apoptosis, oxidative stress, and DNA repair. The silent information regulator (SIRT) is thought to have a role in skin disorders, including psoriasis, that are characterized by hyperproliferation and inflammation. Aim: The aim of this study was to investigate FOXO3A and SIRT1 gene polymorphisms in EOP. Methods: The study group consisted of 142 EOP patients and 123 unrelated healthy controls. FOXO3A polymorphisms were determined using the polymerase chain reaction (PCR)-restriction fragment length polymorphism method. SIRT1 gene polymorphisms were determined by PCR-confronting two-pair primers methods. Results: The FOXO3A rs4946936 and SIRT1 rs7069102 gene polymorphisms were positively correlated with EOP and disease severity. The GG genotype frequency of SIRT1 rs7069102 gene polymorphisms was increased in severe EOP. The CC frequency of FOXO3A rs4946936 was increased in EOP with nail disorders. Conclusion: The rs7069102 gene polymorphism of SIRT1 and rs4946936 polymorphism of FOXO3A are associated with early onset psoriasis; this may be responsible for increased keratinocyte proliferation in the pathogenesis of psoriasis and disease severity.
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- 2018
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