Publications by authors named "Sarah Morrow"

Background: Cognitive impairment is linked with increased risk of falls in people with multiple sclerosis (pwMS), but it is not clear whether cognitive performance may help to account for the discordance between fall-risk due to actual physiological functioning and the individual's perception of their fall-risk. This study examined the relationship between cognitive performance and the concordance/discordance of physiological and perceived fall-risk in pwMS.

Methods: In this single-center cross-sectional analysis of 201 pwMS, proxies for physiological (gait speed) and perceived (Modified Falls Efficacy Scale) fall-risk were collected.

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Context: Persons with advanced multiple sclerosis (MS) require care beyond the disease modifying treatments offered in conventional MS clinics to address their complex physical and psychosocial needs. In the novel MS Comprehensive and Palliative Care (MSCPC) Program, an MS neurologist, palliative care specialist, and physiatrist collaborate to identify these needs and improve symptom control.

Objectives: To characterize the medical, physical, and psychosocial concerns of persons with advanced disability from MS and describe the recommended interventions of the MSCPC Program.

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Article Synopsis
  • A study investigated the possibility of a prodromal phase in aquaporin-4 antibody positive neuromyelitis optica spectrum disorder (NMOSD) and myelin oligodendrocyte glycoprotein antibody disease (MOGAD) using health data from Ontario, Canada.
  • The research involved comparing outpatient visits and hospitalizations of individuals with NMOSD and MOGAD to matched general population controls over five years prior to their first incident attack.
  • Results indicated that NMOSD patients had significantly higher healthcare use before their incident attack, suggesting a potential prodromal phase that could allow for earlier diagnosis and management of the condition.
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Cognitive impairment in multiple sclerosis (MS) is common and can have negative effects on quality of life. The clinical presentation can be more subtle and insidious. Thus, cognitive impairment is often underrecognized by both persons with MS (PwMS) and clinicians, leading to underestimation disability due to MS.

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Human pluripotent stem cell (hPSC)-derived retinal organoids are three-dimensional cellular aggregates that differentiate and self-organize to closely mimic the spatial and temporal patterning of the developing human retina. Retinal organoid models serve as reliable tools for studying human retinogenesis, yet limitations in the efficiency and reproducibility of current retinal organoid differentiation protocols have reduced the use of these models for more high-throughput applications such as disease modeling and drug screening. To address these shortcomings, the current study aimed to standardize prior differentiation protocols to yield a highly reproducible and efficient method for generating retinal organoids.

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Introduction: Switching disease-modifying therapy (DMT) may be considered for relapsing-remitting multiple sclerosis (RRMS) if a patient's current therapy is no longer optimal. This was particularly important during the recent COVID-19 pandemic because of considerations around immune deficiency and impaired vaccine response associated with B cell-depleting DMTs. This real-world, single-center study aimed to evaluate change or decline in functional ability and overall disease stability in people with RRMS who were switched from B cell-depleting ocrelizumab (OCRE) to diroximel fumarate (DRF) because of safety concern related to the COVID-19 pandemic.

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Aim And Rationale: Problems with manual dexterity and cognition impact the everyday performance of people with multiple sclerosis (PwMS). Accumulated findings point to the relationship between deficits in manual dexterity and auditory domains of cognition with a lack of evidence on visuospatial and verbal aspects of cognitive functioning. Therefore, this study explores the relationship between manual dexterity and cognition in a cohort of PwMS.

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Background: Cognitive impairment can considerably impact the work life of people who have multiple sclerosis (MS). Cognitive symptoms are associated with an increased likelihood of unemployment, changes in employment and decreased working hours. This qualitative interview-based study aims to gather real-word experiences and perspectives from both people living with MS and healthcare professionals, to explore how cognitive symptoms are experienced in the workplace, how their impact is addressed, and what can be done to support people in managing and minimizing this impact on employment.

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Article Synopsis
  • Black adolescent males experience significant exposure to violence and loss, particularly through murder, affecting their mental health and social dynamics.
  • The study focused on understanding how these youths cope with the bereavement of friends or family members, highlighting that many had lost multiple loved ones to violence.
  • Four major themes emerged from their experiences: isolation as a form of self-preservation, the comfort found in sharing their stories of loss, mental escapism, and resilience leading to personal growth, suggesting the need for culturally relevant support interventions.
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  • Cognitive impairment (CI) is common in people with multiple sclerosis (PwMS) and may be more closely linked to depression than to actual cognitive performance, making self-reports of CI potentially unreliable.
  • This study aims to explore how employment status affects cognitive testing performance and to determine the complex interactions between self-reported CI, depression, and cognitive abilities in PwMS.
  • A retrospective analysis of 590 PwMS was conducted using various validated questionnaires and structural equation modeling to assess the relationships between self-reported cognition, employment status, and cognitive performance outcomes like memory and processing speed.
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Background: Prior research has established a link between thalamic pathology and cognitive impairment (CI) in people with multiple sclerosis (pwMS). However, the translation of these findings to pwMS in everyday clinical settings has been insufficient.

Objective: To assess which global and/or thalamic imaging biomarkers can be used to identify pwMS at risk for CI and cognitive worsening (CW) in a real-world setting.

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  • Cognitive symptoms significantly hinder disease management and daily activities for individuals with multiple sclerosis (MS), as discussed in a symposium at the 2020 European Charcot Foundation.
  • The symposium featured insights from a patient with MS, a neuropsychologist, and a neurologist, emphasizing that cognitive impairment is often overlooked in MS care but greatly affects patients' everyday lives.
  • To mitigate these challenges, the panel suggested enhancing awareness of cognitive issues in MS, promoting better communication between patients and healthcare providers, and implementing routine screening for cognitive function.
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Background: Early serologic diagnosis and initiation of targeted therapy are associated with better outcomes in aquaporin-4 IgG positive (AQP4+) neuromyelitis optica spectrum disorder (NMOSD).

Objective: To determine predictors of time to serologic diagnosis of AQP4+ NMOSD.

Methods: In CANOPTICS, a multi-centre, Canadian cohort study of NMOSD, we retrospectively evaluated time from the first clinical attack to first positive AQP4-IgG serology.

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Purpose: Cognitive behavioural therapies (CBTs) are a standard of care for treatment of many 'hidden symptoms' in people with MS (PwMS), such as stress, depression, and fatigue. However, these interventions can vary widely in formatting and may not be tailored for PwMS. To optimize CBTs for MS, understanding the experiences of PwMS and clinicians is essential.

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Background: Spectral Optical Coherence Tomography (OCT) and Visual Evoked Potentials (VEPs) have both emerged as potentially useful biomarkers of cognitive decline in people with multiple sclerosis (PwMS). Their combined use may provide additional predictive value for identifying disease impact, progression, and remyelination capacity above-and-beyond what is captured using either approach alone.

Objective: We examined the relationship between OCT/VEP measures and cognitive functioning in 205 PwMS.

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Article Synopsis
  • Understanding how personality traits and demographics affect outcomes like job performance and mental health in people with Multiple Sclerosis (MS) can help improve treatment and support strategies.
  • Researchers studied 384 individuals with MS to see how factors like age, education, and personality traits, specifically conscientiousness and neuroticism, influenced various outcomes.
  • Results indicated that younger age and higher education led to better outcomes, while higher neuroticism was linked to increased anxiety and depression, and women experienced more anxiety than men.
  • Future interventions should target individuals with high neuroticism and consider other factors such as social support and coping strategies to enhance understanding and management of MS.
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Multiple sclerosis remains one of the most common causes of neurological disability in the young adult population (aged 18-40 years). Novel pathophysiological findings underline the importance of the interaction between genetics and environment. Improvements in diagnostic criteria, harmonised guidelines for MRI, and globalised treatment recommendations have led to more accurate diagnosis and an earlier start of effective immunomodulatory treatment than previously.

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Background: Cognitive impairment (CI) is common in multiple sclerosis (MS), affecting half of persons with MS (PwMS). Cognitive reserve has been associated with delaying the onset and slowing the progression of CI in PwMS. Multilingualism has been demonstrated to be a protective factor against CI in Alzheimer's disease (AD) but has never been studied in PwMS.

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Background: We previously demonstrated the convergent validity of a fully automated voice recognition analogue of the Symbol Digit Modalities Test (VR-SDMT) for evaluating processing speed in people with multiple sclerosis (pwMS).

Objective/methods: We aimed to replicate these results in 54 pwMS and 18 healthy controls (HCs), demonstrating the VR-SDMT's reliability.

Results: Significant correlations were found between the VR-SDMT and the traditional oral SDMT in the multiple sclerosis (MS) ( = -0.

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This is a summary of a previously published paper: Joint Healthcare Professional and Patient Development of Communication Tools to Improve the Standard of MS Care. It describes a collaboration between people with multiple sclerosis (PwMS) and healthcare professionals (HCPs) to identify challenges in multiple sclerosis (MS) care and design tools to improve communication during consultations.

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Background: Little is known about demographic and environmental factors associated with myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD).

Objective: To investigate factors associated with MOGAD using a case-control design and validated questionnaire from the Environmental Risk Factors in Multiple Sclerosis Study (EnvIMS).

Methods: We enrolled patients with positive MOG antibody serology and diagnosis of MOGAD at six Canadian centres.

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