Multiple Sclerosis
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Multiple Sclerosis
Description
An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)Read more
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Pubmed
Limbic pathway lesions in patients with multiple sclerosis.
Journal: Acta radiologica (Stockholm, Sweden : 1987)
June/26/2016
Description

BACKGROUND

Multiple sclerosis (MS) is a well-known demyelinating disease to cause cognitive dysfunction. The limbic system, relevant to memory, can be easily overlooked in conventional magnetic resonance imaging (MRI).

OBJECTIVE

To investigate the distribution and frequency of demyelinating lesions affecting white matter connections of the limbic system based on localization with diffusion tensor imaging (DTI)-derived fractional anisotropy (FA) color maps compared to three-dimensional T2-weighted (T2W) and FLAIR volumes in MS patients.

METHODS

One hundred and fifty patients with a known diagnosis of MS were identified for this Health Insurance Portability and Accountability (HIPAA)-compliant retrospective cross-sectional study. DTI-derived FA color maps, co-registered to T2W and FLAIR images, were analyzed for lesions affecting the three white matter tracts of the limbic system including cingulum, fornix, and mammilothalamic tracts by two investigators. The approximate location of the lesions on FLAIR was always confirmed on the co-registered DTI-derived FA color maps.

RESULTS

Of the 150 patients analyzed, 14.6% had cingulum lesions, 2.6% had fornix lesions, and 2.6% had mammilothalamic tract lesions; 21.3% of patients had at least one of the three tracts affected.

CONCLUSIONS

A relatively high frequency of lesions involving the limbic tracts may explain memory deficits and emotional dysfunction commonly experienced by patients with MS. The combined information from T2W, FLAIR, and DTI-derived FA color map allowed for more accurate localization of lesions affecting the major white matter tracts of the limbic system.

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Pubmed
Retinal measures correlate with cognitive and physical disability in early multiple sclerosis.
Journal: Journal of neurology
April/6/2017
Description

Further studies are needed to determine the role of retinal optical coherence tomography (OCT) in non-optic neuritis (ON) eyes of patients with early MS. The objective of this study is to explore the relationship between retinal layers' thickness and cognitive as well as physical disability in patients with the early RRMS. Participants in this cross-sectional study were adults with early RRMS, stable on interferon beta-1a, or fingolimod therapy, and without a history of ON in one or both eyes. Patients were evaluated clinically, underwent a battery of cognitive tests, and a retinal OCT scan which was also performed on a group of healthy age- and gender-matched controls. We studied 47 patients with RRMS, on interferon beta-1a (N = 32) or fingolimod (N = 15), and 18 healthy controls. Multivariate analyses controlling for age, disease duration, treatment, and education when exploring cognitive function, showed that pRNFL thickness correlated negatively with 9HPT (standardized Beta -0.4, p < 0.0001), and positively with SDMT (standardized Beta 0.72, p = 0.007). In patients with early RRMS without optic neuropathy, retinal thickness measures correlated with physical disability and cognitive disability, supporting their potential as biomarkers of axonal loss.

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Pubmed
Multiple sclerosis: relapses, resource use, and costs.
Journal: The European journal of health economics : HEPAC : health economics in prevention and care
May/8/2017
Description

BACKGROUND

Relapses can have a major impact on the lives of people with multiple sclerosis (MS), and yet relapse-related healthcare costs have received little attention. This has limited cost-effectiveness analyses of treatments for MS and hampered decision-making regarding the funding of MS healthcare services.

OBJECTIVE

To describe health/social care resource use and costs according to the frequency, severity, and endurance of MS relapses.

METHODS

Data from the prospective, longitudinal UK South West Impact of Multiple Sclerosis cohort were used. A total of 11,800 questionnaires from 1441 people with MS were available, including data on relapses, contacts with health/social care professionals, and other MS-related resource use.

RESULTS

The mean (SD) 6-monthly MS-related health/social care cost for individuals who reported a relapse was £519 (£949), compared to £229 (£366) for those who had not did report a relapse. Care costs varied widely dependent on the characteristics of the relapse. The mean (SD) cost when a relapse was not treated with steroids was £381 (£780), whilst the equivalent cost was £3579 (£1727) when a relapse resulted in hospitalization.

CONCLUSIONS

The impact of relapses on health and social care resources and costs differs according to their frequency, length, and severity. The data provided here can be used in cost-effectiveness analyses and to inform decision-making regarding healthcare provision for people with this condition.

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Pubmed
Famous.
Journal: Survey of ophthalmology
May/1/2017
Description

A 62-year-old woman with multiple sclerosis experienced painless loss of vision in both eyes after starting fingolimod. Fundus examination revealed bilateral macular edema confirmed by optical coherence tomography. Fingolimod was discontinued, and a topical nonsteroidal inflammatory drug and corticosteroid were initiated. Within 2 months, vision returned to baseline with complete resolution of the macular edema.

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Pubmed
Gyroscopic corrections improve wearable sensor data prior to measuring dynamic sway in the gait of people with Multiple Sclerosis.
Journal: Computer methods in biomechanics and biomedical engineering
February/5/2017
Description

Accelerometers are incorporated into many consumer devices providing new ways to monitor gait, mobility, and fall risk. However, many health benefits have not been realised because of issues with data quality that results from gravitational 'cross-talk' when the wearable device is tilted. Here we present an adaptive filter designed to improve the quality of accelerometer data prior to measuring dynamic pelvic sway patterns during a six minute walk test in people with and without Multiple Sclerosis (MS). Optical motion capture was used as the gold standard. Improved wearable device accuracy (≤4.4% NRMSE) was achieved using gyroscopic corrections and scaling filter thresholds by step frequency. The people with MS presented significantly greater pelvis sway range to compensate for their lower limb weaknesses and joint contractures. The visualisation of asymmetric pelvic sway in people with MS illustrates the potential to better understand their mobility impairments for reducing fall risk.

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Pubmed
Meta-analysis of the IL23R and IL12B polymorphisms in multiple sclerosis.
Journal: The International journal of neuroscience
October/4/2016
Description

OBJECTIVE

Polymorphisms in the genes encoding interleukin-23 receptor (IL23R) and the p40 subunit of IL-12/23 (IL12B) have been implicated in multiple sclerosis (MS) risk. However, results of different studies are inconsistent. Our aim was to perform a meta-analysis on this topic.

METHODS

We assessed two variants (rs10889677 and rs7517847) of IL23R and the A1188C polymorphism (rs3212227) of IL12B. Electronic databases (PubMed, Web of Science and Scopus) were searched for eligible studies published until September 2014. Odds ratio (OR) and 95% confidence interval (95% CI) were used to investigate the strength of association in dominant, recessive, homozygote and allelic comparison models.

RESULTS

Seven case-control studies with 2250 MS patients and 2320 controls were included in this meta-analysis. The pooled results showed no association of rs10889677 and rs7517847 with MS risk in any of the genetic models. Although the pooled analysis showed an association between rs3212227 and MS in all study subjects in dominant (OR = 0.81, 95% CI: 0.66-0.99, P(h) = 0.480, P(z) = 0.044) and allelic comparison (OR = 0.84, 95% CI: 0.72-0.98, P(h) = 0.967, P(z) = 0.030) models, subgroup analysis based on ethnicity did not suggest an association between rs3212227 and MS risk in Caucasians in any of the genetic models, and there was no association between rs3212227 and MS risk in an Asian group.

CONCLUSIONS

The IL23R polymorphisms rs10889677, rs7517847, and the IL12B polymorphism rs3212227 are not associated with MS risk.

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Pubmed
Small molecules with anti-inflammatory properties in clinical development.
Journal: Pharmacology & therapeutics
October/4/2016
Description

Inflammation is a crucial physiological response of our body to any kind of noxa be it an infection or tissue injury. However, this physiological process can be detrimental if dysregulated, and when the acute inflammatory response fails to resolve the cause of inflammation, there can be a switch to chronification. According to ICD 10 (WHO) over 3.000 diseases exist with the suffix "-itis" which terms an inflammatory disease. For the treatment of inflammation, non-steroidal anti-inflammatory drugs (NSAIDs) are the most widespread drugs while glucocorticoids are among our strongest weapons against inflammation, making them emergency treatments for acute episodes of chronic inflammation. For the treatment of many inflammatory disorders, both are not satisfying. Consequently, industrial and academic research on anti-inflammatory drugs is very intensive. In this review, we evaluate current treatments and unmet needs of chronic inflammatory diseases with high prevalence (rheumatoid arthritis, multiple sclerosis, chronic obstructive pulmonary disease, inflammatory bowel disease, and psoriasis), and systematically review small molecules with anti-inflammatory properties presently in clinical trials for the aforementioned diseases. As the pathophysiological knowledge of diseases increased over the last decades, a more specific intervention of inflammatory pathways becomes possible. After one hundred years of NSAIDs and over fifty years of glucocorticoids, more specific drugs for anti-inflammatory therapy such as roflumilast or fingolimod are rising. The aim of this article is to critically review the literature on small anti-inflammatory molecules in clinical trials to generate an idea of what we can expect in the future.

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Pubmed
Methylprednisolone treatment in multiple sclerosis: effect of treatment, pharmacokinetics, future.
Journal: Multiple sclerosis (Houndmills, Basingstoke, England)
December/11/1997
Description

High dose intravenous methylprednisolone treatment is effective and safe in the treatment of relapses in multiple sclerosis, but the long term effects are unclear. Pharmacokinetics are almost unknown, but may be very important for the understanding of the clinical and paraclinical effects. In view of what is known now, IVMP should have a prominent place in basic and clinical MS research.

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Pubmed
Apathy in multiple sclerosis: gender matters.
Journal: Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia
February/1/2017
Description

Apathy has been recognized as a frequent symptom in multiple sclerosis (MS) but uncertainty remains about its prevalence and clinical correlates. Therefore, the objective of this work was to assess the prevalence of apathy in patients with MS and to identify clinical and demographic correlates. A case-control study with 30 patients and 30 healthy controls matched for age, gender and education was performed. Apathy diagnosis was established using Robert et al.'s criteria. Additionally, apathy was assessed using the 10-item short version of the clinical-rated Apathy Evaluation Scale (AES-C-10). The Beck Depression Inventory (BDI), Modified Fatigue Impact Scale (MFIS), and Montreal Cognitive Assessment (MoCA) were used to evaluate depression, fatigue and cognitive impairment, respectively. Apathy prevalence in MS patients was 43.3%. Patients with MS had higher AES-C-10 scores than controls (13.9 vs. 12.0, p=0.015). Patients with apathy presented a higher proportion of males (53.8% vs. 11.8%, p=0.02), lower educational level (53.8% vs. 11.8% of patients with up to 9years of education), higher scores on cognitive dimension of MFIS (18.0 vs. 8.0, p=0.048) and BDI (13.0 vs. 7.0, p=0.035) and worse performance on MoCA (24.0 vs. 26.0, p=0.028). Gender was the only independent predictor of apathy, with men presenting a higher risk compared to women (OR: 9.62; 95%CI: 1.02-90.61; p=0.048). In conclusion, apathy is a common neuropsychiatric disorder in MS and it is probably underdiagnosed. Male patients seem to have an increased risk of apathy, and this finding may be related to the generally more unfavorable course of MS in men.

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Pubmed
Prevalence of temporomandibular disorders symptoms in patients with multiple sclerosis.
Journal: Arquivos de neuro-psiquiatria
December/21/2014
Description

The aim of the present study was to assess the prevalence of symptoms of temporomandibular disorders (TMD) in patients with the relapsing-remitting form of multiple sclerosis (MS), the relationship between TMD and the severity of MS, and the presence of TMD symptoms in the evaluated groups. Sixty individuals were evaluated: 30 patients diagnosed with relapsing-remitting MS and 30 control individuals matched for gender and age range with no neurologic pathology. In order to investigate the TMD symptoms, the questionnaires of the EACD (European Academy of Craniomandibular Disorders) and the RDC/TMD (Research Diagnostic Criteria for Temporomandibular Disorders), both validated for TMD research, were administered. To assess the extent of disability produced by MS, the Expanded Disability Status Scale (EDSS) was used. The prevalence of TMD symptoms in patients with MS was 56.7% versus 16.7% for the control group, with a statistically significant difference between the groups (p=0.0016). No correlation was found between the severity of MS and the prevalence of TMD symptoms (Fisher's test, p=1.0).

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