Publications by authors named "Semra Mungan"

Introduction: Optical Coherence Tomography Angiography (OCTA) is an examination that is increasingly used in neurodegenerative diseases. This study in multiple sclerosis (MS) patients; It aims to reveal the presence of vascular involvement in the retina and optic nerve and its relationship with disease-related clinical parameters with the help of OCTA.

Methods: One eye of 49 MS patients and 28 healthy controls were included in the study.

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Purpose: To investigate the potential effects of systemic fingolimod treatment on parameters of the anterior segment of the eye and tear film function tests in patients with multiple sclerosis (MS).

Methods: Forty-eight eyes of 24 individuals who were started on systemic fingolimod treatment for relapsing-remitting MS were prospectively enrolled in this study. Patients underwent examinations immediately before initiation of systemic fingolimod treatment, and at the first and sixth months of treatment.

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Article Synopsis
  • Ocrelizumab (OCR) shows effectiveness in treating multiple sclerosis (MS) but can lead to a "wearing-off phenomenon" (WoP) prior to infusions.
  • A study involving 409 MS patients found that a substantial number experienced WoP symptoms, with many reporting issues like fatigue and walking difficulties four weeks before their next dose.
  • Factors such as shorter disease duration and longer intervals between doses were associated with increased WoP occurrence, indicating a need for more personalized treatment approaches.
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Introduction: Fingolimod is the first oral immunomodulatory treatment used as secondary care therapy in the treatment of multiple sclerosis for the last 10 years. The objective of our study is to reveal the experiences of the first generic fingolimod active ingredient treatment in different centers across Turkey.

Method: The first generic fingolimod efficacy and safety data of patients followed-up in 29 different clinical multiple sclerosis units in Turkey were analyzed retrospectively.

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This study aimed to assess the possible association between cognitive impairment and two important biochemical biomarkers of oxidative stress, thiol-disulfide homeostasis (TDH), and ischemia-modified albumin (IMA) in patients with multiple sclerosis (MS). This study included 85 patients with MS (38 treatment-naïve relapsing-remitting MS (RRMS), 31 RRMS on fingolimod therapy, and 16 secondary progressive MS (SPMS)) and 33 healthy controls. Cognitive evaluation was carried out by applying the Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS) test battery and the scores were adjusted for age and years of education.

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Background: COVID-19 is a multisystemic infection with variables consequences depending on individual and comorbid conditions. The course and outcomes of COVID-19 during neuromyelitis optica spectrum disorders (NMOSD) and myelin oligodendrocyte glycoprotein antibody-associated disorders (MOGAD) are not clearly known.

Objective/methods: The aim of this study was to examine the features and outcomes of COVID-19 infection in NMOSD and MOGAD patients.

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Background: This study aimed to explore the possible association of single nucleotide polymorphisms (SNPs) in the upstream (rs9402373) and downstream regions (rs9399005 and rs12526196) of the gene encoding connective tissue growth factor (CTGF/CCN2) with relapsing-remitting multiple sclerosis (RRMS) risk and clinical parameters including disability scores and rate of disability progression.

Materials And Methods: In total, 200 patients with RRMS and 305 controls were genotyped using real-time PCR (rs1252696 C/T and rs9402373 G/C) or PCR-RFLP (rs9399005 C/T) methods. Furthermore, the association between these genotypes and clinical parameters including Expanded Disability Status Scale (EDSS) score, Multiple Sclerosis Severity Score (MSSS), age at onset, duration of disease, duration of treatment, and presence of contrast-enhancing lesions was analyzed.

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Background: Multiple sclerosis (MS) is an autoimmune neurodegenerative disease of the central nervous system. Sarcopenia, which is characterized by the loss of physical performance and poor outcomes, has recently become the focus of research. However, the relationship between sarcopenia and MS has not yet been investigated.

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Purpose: The aim of this study was to analyze neurocognitive function in patients who underwent continuous flow left ventricular assist device (LVAD) implantation.

Material And Method: This cross-sectional study included three groups: LVAD ( = 31), heart failure patients ( = 26), and healthy volunteers ( = 27). The Rey Auditory-Verbal Learning Test (RAVLT), Judgement of Line Orientation Test (JLOT), Trail Making Test (TMT), Stroop Color-Word Interference Test (SCWIT), Verbal Fluency Test (VFT), Symbol-Digit Modality Test (SDMT) were used to assess the neurocognitive functions.

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Continuous-flow left ventricular assist devices (LVADs) reduce peak systolic flow, increase diastolic flow, and eliminate pulsatility of circulation. Altered blood flow may lead to a change in end-organ perfusion. Analysis of the flow dynamics of the arteries of end organs, such as the brain, may indicate whether an organ is perfused sufficiently.

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Background: Nitric oxide synthase (NOS) is present in the brain and cerebral arteries and it enables the synthesis of nitric oxide (NO), which plays a critical role in brain perfusion. Asymmetrical dimethylarginine (ADMA) is an endogenous NOS inhibitor.

Objectives: The aim of this study was to evaluate serum ADMA levels, which are an indicator of endothelial dysfunction of the renal functions in patients with acute ischemic stroke, and to determine whether there is a possible correlation between ADMA and NO levels and the l-arginine-to-ADMA ratio.

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We aimed to analyze the effects of progressive myelin loss and neurodegeneration seen in patients with multiple sclerosis (MS) on visual tract with electrophysiological and structural tests. Fifty-one patients diagnosed with MS in the Neurology Department were followed up in neuro-ophthalmology outpatient clinic irrespective of their visual symptoms, and were included in our study. The patients were classified as the ones with the history of optic neuritis (group II) and ones without the history (group I) of optic neuritis.

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Objective: To reveal clinical and polysomnographic features in patients treated for restless leg syndrome, and to examine the compatibility of sleep data and clinical features.

Methods: The study was conducted at the Department of Neurology, Ankara Numune Training and Education Hospital, Ankara, Turkey, and comprised patients who presented to the outpatient clinic between January and July 2014 who were diagnosed with restless leg syndrome based on the International RestIess Leg Syndrome Study Group criteria. Patients underwent polysomnography test in spontaneous sleep in a single room.

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Objectives: Multiple sclerosis is an inflammatory condition of the central nervous system whose etiology is influenced by immunologic, genetic, and environmental factors. Aim of the present study was to determine if any relation exists between IL-18 -137C/G and -607C/A gene promoter polymorphisms on the individual susceptibility of multiple sclerosis and also to investigate the possible effect of IL-18 activity regarding this kind of polymorphism and MS.

Patients And Methods: 113 patients with clinically definite MS and 135 ethnically-matched controls were participated in this study.

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Stroke is a multifactorial disease caused by the combination of certain risk factors and genetic factors. There are possible risk factors having important role in the pathogenesis of stroke. The most important environmental factors are cigarette smoking and oxidative stress which have different sources.

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Background: Multiple sclerosis (MS) is a chronic autoimmune demyelinating disease characterized by inflammation of white matter in the central nervous system. It has been indicated that this inflammation causes increased levels of proinflammatory cytokines. Therefore, we aimed to evaluate if there is a possible association between inflammatory markers and the Expanded Disability Status Scale (EDSS) score in patients with MS.

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Article Synopsis
  • The study compares neurocognitive test results between patients with obstructive sleep apnea syndrome (OSAS) and those who are simple snorers to see if OSAS affects cognitive function.
  • A total of 29 OSAS patients and 30 simple-snoring patients underwent tests, including the Stroop Test and Rey Auditory Verbal Learning Test, revealing significant cognitive score differences.
  • The findings suggest that proper diagnosis and treatment of OSAS could potentially prevent cognitive decline.
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The role of atherosclerosis in ischemic stroke has been intensively investigated in recent years, and homocysteine (Hcy) and lipoprotein(a) Lp(a) were found to have roles during the process. This study aims to investigate the relationship between acute ischemic stroke and Lp(a) and Hcy levels and to determine the prognosis and functional disability. Forty-one patients with acute ischemic stroke and 33 controls were included in the study.

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Alterations in blink reflex excitability may occur in the contralateral side (CLS) and in the symptomatic side after peripheral facial palsy (PFP). In this study, the alterations of blink reflex in CLS were evaluated in cases with PFP who showed "three different types" of recovery. For this purpose, the R2 response area and recovery curve of the blink reflex were evaluated.

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