Person: TURAN, ÖMER FARUK
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TURAN
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ÖMER FARUK
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Publication The expression and prognostic value of miR-146a and miR-155 in Turkish patients with multiple sclerosis(Taylor & Francis, 2022-03-04) Sarıdaş, Furkan; Ünlü, Havva Tezcan; Çeçener, Gülşah; Egeli, Ünal; Takanlou, Maryam Sabour; Takanlou, Leila Sabour; Tunca, Berrin; Zarifoğlu, Mehmet; Turan, Ömer Faruk; Taşkapılıoğlu, Özlem; SARIDAŞ, FURKAN; ÇEÇENER, GÜLŞAH; EGELİ, ÜNAL; TUNCA, BERRİN; ZARİFOĞLU, MEHMET; TURAN, ÖMER FARUK; Takanlou, Maryam Sabour; Takanlou, Leila Sabour; Taşkapılıoğlu, Özlem; 0000-0001-5945-2317; 0000-0002-0910-4258; 0000-0002-3820-424X; 0000-0001-7904-883X; 0000-0002-1590-4833; 0000-0002-6361-7150; 0000-0002-1619-6680; HSB-2700-2023; GYU-0252-2022; AAP-9988-2020; AAH-1420-2021; KGL-6846-2024; GRE-6268-2022; ABI-6078-2020; EHN-5825-2022; JDI-6091-2023; EBA-4926-2022Multiple sclerosis (MS) is an inflammatory, autoimmune demyelinating, and neurodegenerative disorder of the central nervous system. Interactions between environmental factors, predisposition genes, and determining genes appear to be involved in its etiology. Epigenetic mechanisms such as microRNA-mediated gene regulation can determine the susceptibility and severity of autoimmune diseases. Therefore, to determine the role of miR-146a and miR-155 in MS and its developmental stages, the expression levels in the serum of MS and clinically isolated syndrome (CIS) patients were compared with those of healthy controls. In the present study, the expression levels of miR-146a and miR-155 were assessed using quantitative Real-Time PCR in blood samples of 15 CIS patients and 61 relapsing-remitting multiple sclerosis (RRMS) patients alongside 32 healthy patients as controls. Furthermore, any associations with the clinicopathologic variables of the patients were also evaluated. Dysregulations were found only in the miR-146a and miR-155 expressions in the RRMS-Control group. When the RRMS patients were evaluated in terms of the characteristics of sex, annual attack rate, age of diagnosis, duration of follow-up, and immunomodulatory treatments used, no significant differences were observed. However, significant dysregulations were identified in miRNA expression in the vitamin D level, EDSS values, and the number of attacks. ROC curve analysis showed that miR-146a and miR-155 were significant in the RRMS-Control group for the area under the curve (AUC). It is possible that miR-146a may be associated with vitamin D deficiency and disease disability, while miR-155 may be associated with the number of attacks.Publication Comparative analysis of fingolimod versus teriflunomide in relapsing-remitting multiple sclerosis(Elsevier Sci Ltd, 2019-11-01) Boz, Cavit; Terzi, Murat; Ozer, Bilge; Türkoğlu, Recai; Karabudak, Rana; Efendi, Hüsnü; Soysal, Aysun; Sevim, Serhan; Altintaş, Ayse; Kurne, Aslı; Akcali, Aylin; Akman, Gülşen; Yüceyar, Nur; Balci, Belgin Petek; Ekmekci, Özgül; Karahan, Serap Zengin; Demirkıran, Meltem; Altunrende, Burcu; Gözübatik Çelik, Gökçen; Kale, Nilüfer; Köseoğlu, Meşrure; Özakbaş, Serkan; Turan, Ömer Faruk; TURAN, ÖMER FARUK; Bursa Uludağ Üniversitesi/Tıp Fakültesi; JHM-3244-2023Background: Fingolimod and teriflunomide are commonly used in the treatment of relapsing-remitting multiple sclerosis (RRMS). These have not been compared in controlled trials, but only in observational studies, with inconclusive results. Comparison of their effect on relapse and disability in a real-world setting is therefore needed.Objectives: The objective of this study was to compare the efficacy of fingolimod and teriflunomide in reducing disease activity in RRMS.Methods: This multicenter, retrospective observational study was carried out with prospectively collected data from 15 centers. All consecutive RRMS patients treated with teriflunomide or fingolimod were included. Data for relapses, Expanded Disability Status Scale (EDSS) scores and brain magnetic resonance imaging (MRI) scans were collected. Patients were matched using propensity scores.Annualized relapse rates (ARR), disability accumulation, percentage of patients with active MRI and treatment discontinuation over a median 2.5-year follow-up period were compared.Results: Propensity score matching retained 349 out of 1388 patients in the fingolimod group and 349 out 678 in the teriflunomide group for final analyses. Mean ARR decreased markedly from baseline after 1 and 2 years of treatment in both the fingolimod (0.58-0.17 after 1 year and 0.11 after 2 years, p < 0.001) and teriflunomide (0.56-0.29 after 1 year and 0.31 after 2 years, p < 0.001) groups. Mean ARR was lower in fingolimod-treated patients than in those treated with teriflunomide at years 1 (p = 0.02) and 2 (p = 0.004). Compared to teriflunomide, the fingolimod group exhibited a higher percentage of relapse-free patients and a lower percentage of MRI-active patients after 2.5-year follow-up. Disability worsening was similar between the two groups. Patients were less likely to discontinue fingolimod than teriflunomide (p < 0.001).Conclusion: Fingolimod was associated with a better relapse control and lower discontinuation rate than teriflunomide. The two oral therapies exhibited similar effects on disability outcomes.Publication MS and COVID-19 challenge: Asymptomatic COVID-19 infection during treatment with cladribine(Springer, 2021-06-24) Seferoğlu, Meral; Ethemoğlu, Özlem; Turan, Ömer Faruk; Siva, Aksel; TURAN, ÖMER FARUK; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Nöroloji Anabilim Dalı; JHM-3244-2023Background The use of disease-modifying therapies (DMTs) in people with multiple sclerosis (pwMS) may affect COVID-19 infection outcomes due to DMTs' immunomodulatory and immunosuppressive effects on immune response. The yet unknown issues are both the early response to the infection, as well as the post-infection development of immunity against the virus under these treatments due to their interaction with the immune system. Methods We report two asymptomatic cases of COVID-19 in patients with relapsing-remitting multiple sclerosis (RRMS) shortly after starting cladribine therapy, both developed anti-SARS-CoV-2 antibody response. Results Patients with MS who are under newly initiated treatment with cladribine tablets may experience an asymptomatic COVID-19 infection and they may develop immunity against SARS-CoV-2. Conclusion These observations raise the probability that DMTs with immunosuppressive effects, such as cladribine, may be considered as a treatment option for selected MS patients with high disease activity during the COVID-19 pandemic.Publication Differences between general neurologists and multiple sclerosis specialists in the management of multiple sclerosis patients: A national survey(Aves, 2019-12-01) Kurtuncu, Murat; Tuncer, Aslı; Uygunoğlu, Uğur; Çalışkan, Zeynep; Kokenli Paksoy, Ayşenur; Efendi, Hüsnü; Sağduyu Kocaman, Ayşe; Özcan, Cemal; Terzi, Murat; Saip, Sabahattin; Karabudak, Rana; Siva, Aksel; Turan, Ömer Faruk; TURAN, ÖMER FARUK; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Nöroloji Anabilim Dalı.; JHM-3244-2023Introduction: The management of multiple sclerosis (MS) has become more complicated after the introduction of new diagnostic and treatment options. Despite the abundance of guidelines, the experience of physicians still plays a major role in the management of patients. This study aimed to define differences in behavior patterns between general neurologists (GNs) and MS specialists (MSSs).Methods: We conducted a survey of 36 questions to 318 neurologists, including 33 MSSs. The survey covered topics including laboratory investigations, pregnancy, and treatment.Results: Our study found many differences between GNs and MSSs in terms of management, the most important being treatment initiation and switching. GNs had a tendency to initiate treatment later than MSSs however, they tended to switch treatment faster. Our study also showed that GNs ordered magnetic resonance imaging (MRI) more frequently than MSSs, even if patients were clinically stable. Moreover, although GNs more frequently relied on MRI, they did not consider brain atrophy as an important measure in the follow-up of their patients. Furthermore, GNs considered replacement therapy less often than MSSs, even in patients with vitamin D deficiency.Discussion: Our study revealed important discrepancies between the management patterns of GNs and MSSs in MS patients. These findings suggest the need for a national education program for GNs on MSSs.