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    Evaluation of the effects of miRNAs in familial Mediterranean fever
    (Springer London Ltd, 2019) Hortu, Hacer Orsdemir; Karaca, Emin; Sozeri, Betul; Gulez, Nesrin; Makay, Balahan; Gunduz, Cumhur; Atik, Tahir; Tekin, Ismihan Merve; Unsal, Sevket Erbil; Cogulu, Ozgur
    Familial Mediterranean fever (FMF) is an inherited autoinflammatory disorder that can result in attacks with accompanying recurrent episodes of fever, serositis, and skin rash. MiRNAs are demonstrated to be associated with a number of other diseases; however, no comprehensive study has revealed its association with FMF disease. The aim is to investigate the role of microRNAs in FMF. We included 51 patients with genetically diagnosed FMF who had clinical symptoms and 49 healthy volunteers. Fifteen miRNAs that were found to be associated with autoinflammatory diseases and have a part in immune response were evaluated. The expression levels of 11 miRNAs (miR-125a, miR-132, miR-146a, miR-155, miR-15a, miR-16, miR-181a, miR-21, miR-223, miR-26a, and miR-34a) in the patient group were significantly low, compared with the control group (p<0.05). The patient group was analyzed and compared within itself, and the expression levels of 5 miRNAs (miR-132, miR-15a, miR-181a, miR-23b, miR-26a) in the patients who took colchicine seemed to have increased and levels of 5 miRNAs (miR-146a, miR-15a, miR-16, miR-26a, miR-34a) in the patients who took colchicine were significantly lower (p<0.05). Furthermore, the attack patients were compared with the control group, and their expression levels of 4 miRNAs (miR-132, miR-15a, miR-21, miR-34a) were significantly lower (p<0.05). Levels of 9 miRNAs (miR-132, miR-146a, miR-15a, miR-16, miR-181a, miR-21, miR-223, miR-26a, miR-34a) in non-attack patients decreased significantly (p<0.05). Our study demonstrates that miRNAs could be effective in the pathogenesis of FMF.
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    Evaluation of the effects of miRNAs in familial Mediterranean fever (vol 38, pg 635, 2018)
    (Springer London Ltd, 2019) Hortu, Hacer Orsdemir; Karaca, Emin; Sozeri, Betul; Gulez, Nesrin; Makay, Balahan; Gunduz, Cumhur; Atik, Tahir; Tekin, Ismihan Merve; Unsal, Sevket Erbil; Cogulu, Ozgur
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    Molecular Basis of beta-Thalassemia in the Population of the Aegean Region of Turkey: Identification of A Novel Deletion Mutation
    (Taylor & Francis Ltd, 2015) Özkınay, Ferda; Onay, Huseyin; Karaca, Emin; Arslan, Esra; Erturk, Biray; Solmaz, Asli Ece; Tekin, Ismihan Merve; Cogulu, Ozgur; Aydinok, Yesim; Vergin, Canan
    beta-Thalassemia (beta-thal) is the most common monogenic disorder in Turkey. The aim of this study was to investigate the spectrum of beta-thal mutations in the Aegean region of Turkey. The data was derived from 1171 unrelated beta-thal subjects, detected in a regional reference hospital between November 2004 and December 2013. Screening for the 22 common mutations was performed using the polymerase chain reaction (PCR)-reverse dot-blot method, and direct automated DNA sequencing for the unknown samples. Thirty-one different beta-thal alleles were identified. Seven mutations, namely IVS-I-110 (G>A) (41.7%), IVS-I-1 (G>A) (8.9%), IVS-II-745 (C>G) (8.6%), codon 8 (-AA) (7.7%), IVS-II-1 (G>A) (7.2%), IVS-I-6 (T>C) (6.6%), codon 39 (C>T) (4.6%) accounted for 85.3% of the mutated alleles. Frequencies of the remaining 24 beta-thal mutations were less than 2.2%; these included one novel mutation [HBB: c. 206_ 212del (p. Leu69Profs* 19)], and four others [-56 (G>C), codon 16 (-C), IVS-I (-3) (C>T) (codon 29), codon 76 (-C)] found in Turkey for the first time. The results will help to prevent severe beta-thal through genetic counseling and prenatal diagnosis (PND) in the Aegean region of Turkey.
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    Plasma miRNA (miR: microribonucleic acid) Levels in Patients with Decompensated Heart Failure: Can miRNA Be an Indicator of the Effectiveness of the Treatment?
    (Elsevier Science Inc, 2013) Sayin, Ahmet; Bilgin, Murat; Zihni, Burcu; Alkan, Mustafa Beyazit; Kemal, Hatice Soner; Gul, Ilker; Yildiz, Bekir Serhat; Tekin, Ismihan Merve; Gunduz, Cumhur; Zoghi, Mehdi
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    The spectrum of HNF1A gene mutations in patients with MODY 3 phenotype and identification of three novel germline mutations in Turkish Population
    (Elsevier Sci Ltd, 2017) Karaca, Emin; Onay, Huseyin; Cetinkalp, Sevki; Aykut, Ayca; Goksen, Damla; Ozen, Samim; Atik, Tahir; Darcan, Sukran; Tekin, Ismihan Merve; Özkınay, Ferda
    Background: Maturity-onset diabetes of the young (MODY) is a monogenic form of diabetes mellitus characterized by autosomal dominant inheritance, early age of onset, and pancreatic beta cell dysfunction. Heterozygous mutations in several genes may cause MODY. Methods: In the present study, we investigated the molecular spectrum of HNF1A (hepatocyte nuclear factor 1a) mutations, in the individuals referred to a reference center for molecular genetic analysis. Mutations screening was performed in a group of 136 unrelated patients (average age 17.22 years) selected by clinical characterization of MODY. Mutation screening involved direct sequencing of the HNF1A gene. Results: Among 136 individuals analyzed, 10 were carrying heterozygous HNF1A mutations, 3 of them being novel. Clinical features, such as age of diabetes at diagnosis or severity of hyperglycemia, were not related to the mutation type or location. No clear phenotype - genotype correlations were identified. Conclusions: As a conclusion MODY resulted from HNF1A mutations shows heterogeneity at both phenotypic and molecular levels in Turkish population. (c) 2017 Published by Elsevier Ltd on behalf of Diabetes India.