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      What is the best way to keep walking and moving around for individuals with Machado-Joseph disease? A scoping review through the lens of Aboriginal families with Machado-Joseph disease in the Top End of Australia

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          Abstract

          Objectives

          Machado-Joseph disease (MJD) is the most common spinocerebellar ataxia worldwide. Prevalence is highest in affected remote Aboriginal communities of the Top End of Australia. Aboriginal families with MJD from Groote Eylandt believe ‘staying strong on the inside and outside’ works best to keep them walking and moving around, in accordance with six key domains that form the ‘Staying Strong’ Framework. The aim of this current study was to review the literature to: (1) map the range of interventions/strategies that have been explored to promote walking and moving around (functional mobility) for individuals with MJD and; (2) align these interventions to the ‘Staying Strong’ Framework described by Aboriginal families with MJD.

          Design

          Scoping review.

          Data sources

          Searches were conducted in July 2018 in MEDLINE, EMBASE, CINAHL, PsychINFO and Cochrane Databases.

          Eligibility criteria for selecting studies

          Peer-reviewed studies that (1) included adolescents/adults with MJD, (2) explored the effects of any intervention on mobility and (3) included a measure of mobility, function and/or ataxia were included in the review.

          Results

          Thirty studies were included. Few studies involved participants with MJD alone (12/30). Most studies explored interventions that aligned with two ‘Staying Strong’ Framework domains, ‘exercising your body’ (n=13) and ‘searching for good medicine’ (n=17). Few studies aligned with the domains having ‘something important to do’ (n=2) or ‘keeping yourself happy’ (n=2). No studies aligned with the domains ‘going country’ or ‘families helping each other’.

          Conclusions

          Evidence for interventions to promote mobility that align with the ‘Staying Strong’ Framework were focused on staying strong on the outside (physically) with little reflection on staying strong on the inside (emotionally, mentally and spiritually). Findings suggest future research is required to investigate the benefits of lifestyle activity programmes that address both physical and psychosocial well-being for families with MJD.

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          Most cited references 70

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          The Global Epidemiology of Hereditary Ataxia and Spastic Paraplegia: A Systematic Review of Prevalence Studies

           Luís Ruano (corresponding) ,  Cláudia Melo,  M Carolina Silva (2014)
          Background: Hereditary cerebellar ataxias (HCA) and hereditary spastic paraplegias (HSP) are two groups of neurodegenerative disorders that usually present with progressive gait impairment, often leading to permanent disability. Advances in genetic research in the last decades have improved their diagnosis and brought new possibilities for prevention and future treatments. Still, there is great uncertainty regarding their global epidemiology. Summary: Our objective was to assess the global distribution and prevalence of HCA and HSP by a systematic review and meta-analysis of prevalence studies. The MEDLINE, ISI Web of Science and Scopus databases were searched (1983-2013) for studies performed in well-defined populations and geographical regions. Two independent reviewers assessed the studies and extracted data and predefined methodological parameters. Overall, 22 studies were included, reporting on 14,539 patients from 16 countries. Multisource population-based studies yielded higher prevalence values than studies based primarily on hospitals or genetic centres. The prevalence range of dominant HCA was 0.0-5.6/10 5 , with an average of 2.7/10 5 (1.5-4.0/10 5 ). Spinocerebellar ataxia type 3 (SCA3)/Machado-Joseph disease was the most common dominant ataxia, followed by SCA2 and SCA6. The autosomal recessive (AR) HCA (AR-HCA) prevalence range was 0.0-7.2/10 5 , the average being 3.3/10 5 (1.8-4.9/10 5 ). Friedreich ataxia was the most frequent AR-HCA, followed by ataxia with oculomotor apraxia or ataxia-telangiectasia. The prevalence of autosomal dominant (AD) HSP (AD-HSP) ranged from 0.5 to 5.5/10 5 and that of AR-HSP from 0.0 to 5.3/10 5 , with pooled averages of 1.8/10 5 (95% CI: 1.0-2.7/10 5 ) and 1.8/10 5 (95% CI: 1.0-2.6/10 5 ), respectively. The most common AD-HSP form in every population was spastic paraplegia, autosomal dominant, type 4 (SPG4), followed by SPG3A, while SPG11 was the most frequent AR-HSP, followed by SPG15. In population-based studies, the number of families without genetic diagnosis after systematic testing ranged from 33 to 92% in the AD-HCA group, and was 40-46% in the AR-HCA, 45-67% in the AD-HSP and 71-82% in the AR-HSP groups. Key Messages: Highly variable prevalence values for HCA and HSP are reported across the world. This variation reflects the different genetic make-up of the populations, but also methodological heterogeneity. Large areas of the world remain without prevalence studies. From the available data, we estimated that around 1:10,000 people are affected by HCA or HSP. In spite of advances in genetic research, most families in population-based series remain without identified genetic mutation after extensive testing.
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            Intensive coordinative training improves motor performance in degenerative cerebellar disease.

            The cerebellum is known to play a strong functional role in both motor control and motor learning. Hence, the benefit of physiotherapeutic training remains controversial for patients with cerebellar degeneration. In this study, we examined the effectiveness of a 4-week intensive coordinative training for 16 patients with progressive ataxia due to cerebellar degeneration (n = 10) or degeneration of afferent pathways (n = 6). Effects were assessed by clinical ataxia rating scales, individual goal attainment scores, and quantitative movement analysis. Four assessments were performed: 8 weeks before, immediately before, directly after, and 8 weeks after training. To control for variability in disease progression, we used an intraindividual control design, where performance changes with and without training were compared. Significant improvements in motor performance and reduction of ataxia symptoms were observed in clinical scores after training and were sustained at follow-up assessment. Patients with predominant cerebellar ataxia revealed more distinct improvement than patients with afferent ataxia in several aspects of gait like velocity, lateral sway, and intralimb coordination. Consistently, in patients with cerebellar but without afferent ataxia, the regulation of balance in static and dynamic balance tasks improved significantly. In patients with cerebellar ataxia, coordinative training improves motor performance and reduces ataxia symptoms, enabling them to achieve personally meaningful goals in everyday life. Training effects were more distinct for patients whose afferent pathways were not affected. For both groups, continuous training seems crucial for stabilizing improvements and should become standard of care. This study provides Class III evidence that coordinative training improves motor performance and reduces ataxia symptoms in patients with progressive cerebellar ataxia.
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              The gene for Machado-Joseph disease maps to human chromosome 14q.

              Machado-Joseph disease (MJD) is an autosomal dominant, multisystem neurodegenerative disorder involving predominantly cerebellar, pyramidal, extrapyramidal, motor neuron and oculomotor systems. Although it was first reported in families of Portuguese-Azorean descent, MJD has also been described in non-Azorean families from various countries, being one of the most common hereditary spinocerebellar degenerations. With the use of highly polymorphic microsatellite DNA polymorphisms, we have assigned the gene for MJD to the long arm of chromosome 14 (14q24.3-q32) by genetic linkage to microsatellite loci D14S55 and D14S48 (multipoint lod score Zmax = 9.719).
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                Author and article information

                Journal
                BMJ Open
                BMJ Open
                bmjopen
                bmjopen
                BMJ Open
                BMJ Publishing Group (BMA House, Tavistock Square, London, WC1H 9JR )
                2044-6055
                2019
                30 September 2019
                : 9
                : 9
                Affiliations
                [1 ] departmentJames Cook University , College of Healthcare Sciences , Cairns, Queensland, Australia
                [2 ] Machado-Joseph Disease Foundation , Alyangula, Northern Territory, Australia
                [3 ] departmentJames Cook University , College of Healthcare Sciences , Townsville, Queensland, Australia
                [4 ] departmentSchool of Public Health, Tropical Medicine and Rehabilitation Sciences , James Cook University , Cairns, Queensland, Australia
                [5 ] departmentNorthern Institute , Charles Darwin University , Darwin, Northern Territory, Australia
                Author notes
                [Correspondence to ] Jennifer J Carr; jennifer.carr2@ 123456my.jcu.edu.au
                Article
                bmjopen-2019-032092
                10.1136/bmjopen-2019-032092
                6797313
                31575582
                © Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

                This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

                Product
                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100004148, Lowitja Institute;
                Award ID: 017-SF-005
                Categories
                Rehabilitation Medicine
                Research
                1506
                1727
                Custom metadata
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                Medicine

                spinocerebellar ataxia, machado joseph disease, walk, mobility, physical

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