Publications by authors named "Ozakbas S"

Article Synopsis
  • The study investigated the prevalence of two types of disability progression in patients with aquaporin-4 antibody-positive neuromyelitis optica spectrum disorder (AQP4-IgG NMOSD): Progression Independent of Relapse Activity (PIRA) and Relapse-Associated Worsening (RAW).
  • It included 181 patients from the MSBase registry, mostly females with an average age of 38.1 years, monitored for an average of 4.5 years, where only 2.2% experienced PIRA and 7.2% experienced RAW.
  • The findings suggest PIRA is rare in AQP4-IgG NMOSD cases, but the study had limitations, such as using
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Background: The relationship between coronavirus disease 2019 (COVID-19) infection and multiple sclerosis (MS) relapse and disease progression remains unclear. Previous studies are limited by small sample sizes and most lack a propensity-matched control cohort.

Objective: To evaluate the effect of COVID-19 infection on MS disease course with a large propensity-matched cohort.

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Objectives: To investigate the effect of telerehabilitation-based graded motor imagery (MI, GMI) training on pain and pain-related factors in people with multiple sclerosis (MS).

Design: Randomized controlled, assessor-blind pilot trial with repeated-measure design.

Setting: Neurology outpatient clinic.

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Background And Objectives: Women with multiple sclerosis (MS) are at risk of disease reactivation in the early postpartum period. Ocrelizumab (OCR) is an anti-CD20 therapy highly effective at reducing MS disease activity. Data remain limited regarding use of disease-modifying therapies (DMTs), including OCR, and disease activity during peripregnancy periods.

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Article Synopsis
  • The study aimed to evaluate the reliability and validity of three questionnaires designed to assess dual-tasking difficulties in people with multiple sclerosis (PwMS).
  • A total of 356 participants across six countries were analyzed, showing that the questionnaires had strong test-retest reliability and internal consistency, with the DIDA-Q performing the best.
  • The findings indicate that these self-reported questionnaires are effective tools for measuring the impact of dual-task challenges on the daily lives of ambulatory PwMS in both research and clinical settings.
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Background: Distance walking fatigability (DWF) in people with multiple sclerosis (pwMS) is defined as a decrease in the distance walking over time. However, declines in gait quality (i.e.

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Article Synopsis
  • - The study examines the effectiveness of high-efficacy disease-modifying treatments (hDMTs) versus low-efficacy treatments (lDMTs) in reducing spinal cord lesions in multiple sclerosis (MS) patients, noting the limited previous data on this specific outcome.
  • - Researchers analyzed data from patients with relapse-onset MS who underwent MRI scans before and after starting treatment, comparing new lesions in both cord and brain areas.
  • - Results indicate that while hDMTs significantly reduced new brain lesions and MS relapses compared to lDMTs, they did not show a significant benefit in preventing new spinal cord lesions.
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Background: Neuromyelitis optica spectrum disorder (NMOSD) can be categorised into aquaporin-4 antibody (AQP4-IgG) NMOSD or seronegative NMOSD. While our knowledge of AQP4-IgG NMOSD has evolved significantly in the past decade, seronegative NMOSD remains less understood. This study aimed to evaluate the predictors of relapses and treatment responses in AQP4-IgG NMOSD and seronegative NMOSD.

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Background: Late-onset multiple sclerosis (LOMS or L; MS) and early-onset MS (EOMS or E) are less common, and their prognosis can be different. To characterize the demographic and clinical features, and clinical outcomes of LOMS and EOMS patients, comparing them to adult-onset MS (AOMS or A) patients.

Methods: The study was conducted as a secondary analysis of a prospective study.

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Background: Comparisons between cladribine and other potent immunotherapies for multiple sclerosis (MS) are lacking.

Objectives: To compare the effectiveness of cladribine against fingolimod, natalizumab, ocrelizumab and alemtuzumab in relapsing-remitting MS.

Methods: Patients with relapsing-remitting MS treated with cladribine, fingolimod, natalizumab, ocrelizumab or alemtuzumab were identified in the global MSBase cohort and two additional UK centres.

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Background: Multiple sclerosis (MS) is commonly associated with work difficulties. This study aimed to examine the relationship between work difficulties and physical disability, cognitive and social cognitive impairment, and subcortical gray matter (scGM) atrophy in pwMS.

Methods: Thirty-three employees with MS underwent assessments with Multiple Sclerosis Work Difficulties Questionnaire-23 MSWDQ-23.

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Background: The COVID-19 pandemic raised concern amongst clinicians that disease-modifying therapies (DMT), particularly anti-CD20 monoclonal antibodies (mAb) and fingolimod, could worsen COVID-19 in people with multiple sclerosis (pwMS). This study aimed to examine DMT prescribing trends pre- and post-pandemic onset.

Methods: A multi-centre longitudinal study with 8,771 participants from MSBase was conducted.

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Theory of Mind (ToM) is understanding others' minds. Empathy is an insight into emotions and feelings of others. Persons with multiple sclerosis (pwMS) may experience impairment in ToM and empathy.

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Article Synopsis
  • Non-specific immunosuppressants (NSIS) are still widely used for treating multiple sclerosis (MS) despite safety concerns, particularly in resource-limited areas.
  • The study analyzed MSBase registry data to compare treatment outcomes of adults with relapsing-remitting MS (RRMS) using dimethyl fumarate (DMF) versus NSIS between January 2014 and April 2022.
  • Results showed that while annualized relapse rates were similar, DMF led to longer times before treatment discontinuation and confirmed disability progression, supporting its use over NSIS for RRMS patients.
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Background: Exergaming has been suggested as a rehabilitation method since it is more motivational for people with multiple sclerosis (MS, pwMS). However, the major disadvantage of this method is the lack of specific scenarios designed for pwMS.

Objectives: This study aims to assess the feasibility of exergaming, which was developed for pwMS.

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Background: The risk of hepatitis B virus (HBV) reactivation remains unclear in people with multiple sclerosis (MS) receiving ocrelizumab. We aimed to assess HBV seroprevalence and reactivation risk in MS patients on ocrelizumab and to evaluate the effectiveness of antiviral prophylaxis against HBV reactivation.

Methods: In this single-center, cross-sectional study, 400 people with MS receiving ocrelizumab were screened for HBV at baseline and antiviral prophylaxis was implemented based on serological results.

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Background: High-efficacy disease-modifying therapies have been proven to slow disability accrual in adults with relapsing-remitting multiple sclerosis. However, their impact on disability worsening in paediatric-onset multiple sclerosis, particularly during the early phases, is not well understood. We evaluated how high-efficacy therapies influence transitions across five disability states, ranging from minimal disability to gait impairment and secondary progressive multiple sclerosis, in people with paediatric-onset multiple sclerosis.

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Background: Balance confidence is an essential component of fall risk assessment in persons with multiple sclerosis (pwMS).

Aims: The aims of this cross-sectional study were to 1) investigate the ability of the 16-item Activities-specific Balance Confidence scale (ABC-16), 6-item Activities-specific Balance Confidence scale (ABC-6), and each item of the ABC-16 for distinguishing fallers and 2) determine cutoff scores for these scales to discriminate fallers and non-fallers in pwMS.

Methods: One hundred and fifty-six participants [fallers/non-fallers: 60 (38.

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Background: Ongoing controversy exists regarding optimal management of disease modifying therapy (DMT) in older people with multiple sclerosis (pwMS). There is concern that the lower relapse rate, combined with a higher risk of DMT-related infections and side effects, may alter the risk-benefit balance in older pwMS. Given the lack of pwMS above age 60 in randomised controlled trials, the comparative efficacy of high-efficacy DMTs such as ocrelizumab has not been shown in older pwMS.

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Background And Objectives: Patients with pediatric-onset multiple sclerosis (POMS) typically experience higher levels of inflammation with more frequent relapses, and though patients with POMS usually recover from relapses better than adults, patients with POMS reach irreversible disability at a younger age than adult-onset patients. There have been few randomized, placebo-controlled clinical trials of multiple sclerosis (MS) disease-modifying therapies (DMTs) in patients with POMS, and most available data are based on observational studies of off-label use of DMTs approved for adults. We assessed the effectiveness of natalizumab compared with fingolimod using injectable platform therapies as a reference in pediatric patients in the global MSBase registry.

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Background: Cognitive evaluation was considered to be very important in the relapse period, on the basis of the presence of isolated cognitive attacks and the necessity of monitoring the patient both physically and cognitively.

Materials And Methods: People with MS (pwMS) who were hospitalized during relapse were included in the study. All MS patients were evaluated by the neurologist with Expanded Disability Status Scale (EDSS), The 9 Hole Peg Test (9HPT) and the Timed 25-Foot Walk Test (T25-FWT).

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Objectives And Aims: Neuromyelitis Optica Spectrum Disorder (NMOSD) is a disabling autoimmune disease of the central nervous system that requires immunosuppressants to control the relapses. The latter puts them at risk for more severe COVID-19 infection. Vaccines are an effective way to control the pandemic.

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Background: To mimic as closely as possible a randomised controlled trial (RCT) and calibrate the real-world evidence (RWE) studies against a known treatment effect would be helpful to understand if RWE can support causal conclusions in selected circumstances. The aim was to emulate the TRANSFORMS trial comparing Fingolimod (FTY) versus intramuscular interferon β-1a (IFN) using observational data.

Methods: We extracted from the MSBase registry all the patients with relapsing-remitting multiple sclerosis (RRMS) collected in the period 2011-2021 who received IFN or FTY (0.

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