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- Biström, Martin, et al.
(author)
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Epstein-Barr virus infection after adolescence and Human herpesvirus 6A as risk factors for multiple sclerosis
- 2021
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In: European Journal of Neurology. - : Blackwell Publishing. - 1351-5101 .- 1468-1331. ; 28:2, s. 579-586
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Journal article (peer-reviewed)abstract
- Background and purpose: Infections with human herpesvirus 6A (HHV-6A) and Epstein–Barr virus (EBV) have been linked to multiple sclerosis (MS) development. For EBV, late infection has been proposed as a risk factor, but serological support is lacking. The objective of this study was to investigate how age affects the EBV and HHV-6A associated risks of developing MS.Methods: In this nested case–control study, Swedish biobanks were accessed to find pre-symptomatically collected blood samples from 670 individuals who later developed relapsing MS and 670 matched controls. A bead-based multiplex assay was used to determine serological response against EBV and HHV-6A. Conditional logistic regression was used to calculate odds ratios and 95% confidence intervals.Results: Seropositivity against EBV exhibited a pattern where associations switched from a decreased risk of developing MS in the group below 20 years of age to an increased risk amongst individuals aged 20–29 and 30–39 years (p for trend 0.020). The age of transition was estimated to be 18.8 years. In contrast, HHV-6A was associated with increased MS risk in all age groups (total cohort odds ratio 2.1, 95% confidence interval 1.6–2.7).Conclusions: This study suggests EBV infection after adolescence and age independent HHV-6A infection as risk factors for MS.
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- Bohlen, S, et al.
(author)
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Physical therapy in Huntington's disease : towards objective assessments?
- 2013
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In: European Journal of Neurology. - : Wiley. - 1351-5101 .- 1468-1331. ; 20:2, s. 389-393
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Journal article (peer-reviewed)abstract
- Background and purposePhysical therapy is recommended for the treatment of Huntington's disease, but reliable studies investigating its efficacy are almost non-existent. This may in part be due to the lack of suitable outcome measures. Therefore, we investigated the applicability of novel quantitative and objective assessments of motor dysfunction in the evaluation of physical therapy interventions aimed at improving gait and posture.MethodsTwelve patients with Huntington disease received a predefined twice-weekly intervention focusing on posture and gait over 6 weeks. The GAITRite mat and a force plate were used for objective and quantitative assessments. The Unified Huntingtons Disease Rating Scale Total Motor Score, the timed Up &Go test, and the Berg Balance Scale were used as clinical outcome measures.ResultsSignificant improvements were seen in GAITRite measures after therapy. Improvements were also seen in the Up & Go test and Berg Balance Scale, whereas force plate measures and Total Motor Scores did not change.ConclusionsThe results suggest that physical therapy has a positive effect on gait in Huntington's disease. The study shows that objective and quantitative measures of gait and posture may serve as endpoints in trials assessing the efficacy of physical therapy. They should be explored further in larger trials applying a randomized controlled setting.
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