Eficácia de terapia de fala em grupo para pacientes com a doença de Machado Joseph: uma série de casos / Effectiveness of group speech therapy for patients with Machado Joseph Disease: a series of cases / Eficiencia de la terapia del habla en grupo para pacientes con Enfermedad de Machado Joseph: una serie de casos

Objetivo: Verificar o benefício de terapia fonoaudiológica em grupo na inteligibilidade de fala de pacientes com Doença de Machado Joseph (DMJ). Método: Realizou-se uma série de casos, com pacientes atendidos em um ambulatório de fonoaudiologia para adultos neurodegenerativos em um hospital de referência no sul do Brasil. Foram incluídos pacientes com o diagnóstico molecular de DMJ. Realizaram-se coletas de fala pré e pós-intervenção. Posteriormente, os trechos de fala passaram por análise perceptiva-auditiva por 3 fonoaudiólogas treinadas e calibradas a um índice Kappa ≥ 0.90, cegas às coletas de fala e por análise acústica no software Praat. A terapia fonoaudiológica foi realizada em grupo, composta por quatro sessões semanais de cinquenta minutos. Cada sessão foi dividida entre exercícios de fala e orientação sobre estratégias para otimizar a comunicação. Resultados: A amostra foi composta por 5 pacientes com média de idade de 39,8 anos (±16,51) e tempo de doença de 10 anos (±8,15). Quatro (80%) participantes receberam diagnóstico fonoaudiológico inicial de disartria leve e um (20%) de disartria moderada. Após a intervenção, não houve melhora no diagnóstico de disartria, contudo verificou-se que 60% (n=3) dos participantes apresentaram melhora na articulação, 40% (n=2) na prosódia e ressonância e 40% (n=2) apresentaram piora na respiração. Na análise acústica observou-se melhora no tempo máximo de fonação (TMF) em 3 (60%) dos 5 pacientes. Conclusão: Verificou-se melhora na funcionalidade da fala através da análise perceptiva auditiva, porém com pouca melhora em parâmetros específicos da análise acústica.

Objective: To verify the benefit of group speech therapy in speech intelligibility of patients with Machado Joseph's disease (MJD). Methods: A series of cases was carried out, with patients seen in a speech therapy clinic for neurodegenerative adults in a referral hospital in southern Brazil. Patients with the molecular diagnosis of MJD were included. Speech recordings were performed before and after the intervention. Subsequently, the speech excerpts underwent auditory-perceptual analysis by 3 trained speech therapists and calibrated to a Kappa index ≥ 0.90, blind to speech collections and acoustic analysis in the Praat software. Speech therapy was performed in a group, consisting of four weekly sessions of fifty minutes. Each session was divided between speech exercises and guidance on strategies to optimize communication. Results: The sample consisted of 5 patients with a mean age of 39.8 years (± 16.51) and disease duration of 10 years (± 8.15). Four (80%) participants received an initial speech therapy diagnosis of mild dysarthria and one (20%) of moderate dysarthria. After the intervention, there was no improvement in the diagnosis of dysarthria, however it was found that 60% (n = 3) of the participants showed improvement in the speech motor bases: articulation, 40% (n = 2), prosody and resonance and 40% (n = 2) worsened in breathing. The acoustic analysis showed an improvement in maximum phonation time (MPT) in 3 (60%) of the 5 patients. Conclusion: Despite the little improvement in specific parameters of the acoustic analysis, there was an improvement in speech functionality from the auditory perceptual analysis, improving the speech intelligibility of this sample.

Objetivo: Verificar el beneficio de la logopedia grupal en la inteligibilidad del habla de pacientes con enfermedad de Machado Joseph (EMJ). Metodos: Se realizó una serie de casos, con pacientes atendidos en una clínica de logopedia para adultos neurodegenerativos en un hospital de referencia en el sur de Brasil. Se incluyeron pacientes con diagnóstico molecular de EMJ. Se realizaron grabación del habla antes y después de la intervención. Posteriormente, los extractos del habla se sometieron a un análisis auditivo-perceptivo por 3 logopedas capacitados y calibrados con un índice Kappa ≥ 0,90, ciegos a las grabación del habla y al análisis acústico en el software Praat. La logopedia se realizó en grupo, consistente en cuatro sesiones semanales de cincuenta minutos. Cada sesión se dividió entre ejercicios de habla y orientación sobre estrategias para optimizar la comunicación. Resultados: La muestra estuvo formada por 5 pacientes con una edad media de 39,8 años (± 16,51) y una duración de la enfermedad de 10 años (± 8,15). Cuatro (80%) participantes recibieron un diagnóstico inicial de terapia del habla de disartria leve y uno (20%) de disartria moderada. Tras la intervención, no hubo mejoría en el diagnóstico de disartria, sin embargo se encontró que el 60% (n = 3) de los participantes mostró mejoría en las bases motoras del habla: articulación, 40% (n = 2), prosodia y resonancia. y el 40% (n = 2) empeoró en la respiración. El análisis acústico mostró una mejora en el tiempo máximo de fonación (TMF) en 3 (60%) de los 5 pacientes. Conclusion: A pesar de la pequeña mejora en los parámetros específicos del análisis acústico, hubo una mejora en la funcionalidad del habla a partir del análisis de percepción auditiva, mejorando la inteligibilidad del habla de esta muestra.

Nystagmus may be the first neurological sign in early stages of spinocerebellar ataxia type 3 / Nistagmo pode ser o primeiro sinal neurológico nos estágios precoces da ataxia espinocerebelar tipo 3

Abstract Background: Spinocerebellar ataxia type 3 (SCA3) is the most common autosomal dominant spinocerebellar ataxia worldwide. Almost all patients with SCA3 exhibit nystagmus and/or saccades impairment. Objective: To investigate the presence of nystagmus as an early neurological manifestation, before ataxia, in some patients with SCA3 in the first six months of the disease. Methods: We evaluated a series of 155 patients with clinically and molecularly proven SCA3 between 2013 and 2020. Data regarding sex, age, age at onset, disease duration, CAG repeat expansion length, first symptom, presence of ataxia, scores on SARA and ICARS scales, and presence and characteristics of nystagmus were collected. Results: We identified seven patients with symptomatic SCA3 who presented with isolated nystagmus. In these seven individuals the age at onset ranged from 24 to 57 years, and disease duration from four to six months. Conclusions: Our study showed that nystagmus may be the first neurological sign in SCA3. This clinical observation reinforces the idea that the neurodegenerative process in SCA3 patients may start in vestibular system connections or in flocculonodular lobe. This study adds relevant information about pre-symptomatic features in SCA3 that may work as basis for a better understanding of brain degeneration and for future therapeutic clinical trials.

RESUMO Antecedentes: A ataxia espinocerebelar tipo 3 (SCA3) é a ataxia espinocerebelar de herança autossômica dominante mais comum em todo o mundo. Quase todos os pacientes com SCA3 têm nistagmo e/ou comprometimento das sácades. Objetivo: Investigar a presença de nistagmo como manifestação neurológica precoce, antes do surgimento da ataxia, em alguns pacientes com SCA3 nos primeiros seis meses de doença. Métodos: Foram avaliados 155 pacientes com diagnóstico clínico e molecular de SCA3, entre 2013 e 2020, em relação a sexo, idade, idade de início, duração da doença, expansão da repetição CAG, primeiro sintoma, presença de ataxia, pontuações nas escalas SARA e ICARS, e presença e caracterização de nistagmo. Resultados: Identificamos sete pacientes com SCA3 que apresentavam nistagmo isolado. A idade de início da doença nesses pacientes variou de 24 a 57 anos e a duração da doença variou de quatro a seis meses. Conclusões: O nosso estudo mostrou que o nistagmo pode ser o primeiro sinal neurológico na SCA3. Essa observação clínica reforça a ideia de que o processo neurodegenerativo nos pacientes com SCA3 pode se iniciar nas conexões do sistema vestibular ou no lobo floculonodular. Este estudo adiciona informações relevantes sobre características pré-sintomáticas na SCA3 e que podem servir de base para melhor entendimento da degeneração cerebral e para futuras terapias.

Síndrome de Brooke-Spiegler asociado a carcinoma basocelular: reporte de caso / Brooke-Spiegler syndrome associated with basal cell carcinoma: case report

El síndrome de Brooke-Spiegler (SBS) es una entidad rara, autosómica dominante, que ocurre por mutaciones del gen CYLD, el cual funciona como supresor de tumores. Se presenta el caso de una mujer de 50 años de edad, con historia de aparición de lesiones características de tricoepiteliomas que predominaban en nariz, región interciliar y mentón, que iniciaron desde los 14 años de edad. Desde hace 5 años refiere aumento del tamaño de lesiones en alas nasales, y una lesión en punta nasal de 2 años de evolución. Al realizarse una correlación clínica e histológica, asociada a los antecedentes familiares de la madre y hermano de la paciente, se concluyó que el cuadro clínico era compatible con tricoepitelioma múltiple familiar, una variante especial del SBS, en este caso asociado a carcinoma basocelular, que aunque no es un hallazgo común, se ha visto que se puede presentar en esta enfermedad. El diagnóstico preciso de SBS requiere de una correlación clínico-histológica, y se debe hacer un seguimiento clínico cercano para detectar cambios en las lesiones en piel, que puedan indicar una transformación maligna

Brooke-Spiegler syndrome (BSS) is a rare autosomal dominant condition that occurs due to mutations in the CYLD gene, which functions as a tumor suppressor gene. The case of a 50-year-old woman with a history of characteristic trichoepitheliomas predominantly in the nose, glabella and chin that began at 14 years of age is presented. She reports an increase in the size of the nasal ala lesions for the past 5 years, and the appearance of a new lesion in the nasal tip 2 years ago. When performing a clinical and histological correlation, associated with family history in both the mother and brother, it was concluded that the diagnosis was compatible with multiple familial trichoepithelioma, a special variant of BSS, associated in this case with basal cell carcinoma, that although not a common finding, has been seen to coexist in this disease. The diagnosis of BSS requires a clinical and histological correlation, and a close clinical follow-up must be performed to detect changes in the skin lesions that may indicate malignant transformation

Detection and analysis of dynamic variant in a pedigree affected with spinocerebellar ataxia type 3 / 中华医学遗传学杂志

OBJECTIVE@#To analyze the dynamic variant and clinical subtype of a pedigree affected with spinocerebellar ataxia (SCA) by using fluorescent-labeled primer combined with capillary electrophoresis.@*METHODS@#Genomic DNA was extracted from 8 members including 6 patients and 2 healthy individuals from the pedigree. Six pairs of fluorescent-labeled primers were designed to screen pathological variants in association with common subtypes of SCA including SCA1, SCA2, SCA3, SCA6, SCA12 and SCA17.The PCR products were detected by capillary electrophoresis.@*RESULTS@#The number of CAG repeats in the SCA3 gene of the proband were determined as 8 and 70, exceeded the normal range(12 to 40), which suggested a diagnosis of SCA3. The other five patients were all detected with abnormal CAG repeats in the SCA3 gene, while the two healthy individuals were determined to be within the normal range.@*CONCLUSION@#The abnormal expansion of CAG repeats in the SCA3 gene probably underlay the pathogenesis of the disease in this pedigree. Combined fluorescent-labeled primers PCR and capillary electrophoresis can detect dynamic variants among SCA patients with efficiency and accuracy.

Atuação fonoaudiológica na doença de Machado-Joseph: relato de caso / Effect of speech-language therapy in Machado-Joseph disease: case report

RESUMO A doença de Machado-Joseph é a forma de ataxia espinocerebelar de maior prevalência no Brasil e tem como alguns dos principais sinais clínicos a disfagia e a disartria. Este relato de caso objetivou verificar os efeitos da intervenção intensiva fonoaudiológica em um paciente com a doença de Machado-Joseph. A coleta de dados foi realizada a partir de protocolos de avaliação de fala e deglutição e protocolos de autoavaliação de qualidade de vida, em relação à deglutição e comunicação. Também foram realizadas avaliações quantitativas de parâmetros acústicos. A intervenção foi administrada por meio do método Lee Silverman, programa intensivo que visa ao aumento da intensidade vocal. A partir das avaliações clínicas e instrumentais, os resultados demonstraram melhora em todas as bases motoras de fala, respiratória, fonatória, ressonantal, articulatória e a prosódia, além da diminuição dos sinais disfágicos. Na qualidade vocal, houve diminuição de rouquidão e instabilidade, regularização de jitter e shimmer, aumento da intensidade vocal, melhora na coordenação de palavras e frases por expiração e, ainda, melhora discreta da diadococinesia. Após intervenção, a autoavaliação de qualidade de vida relacionada à deglutição apresentou valores iguais ou maiores nos domínios diretamente ligados à alimentação, porém, os domínios emocionais diminuíram. O paciente relatou satisfação em todos os domínios da qualidade de vida em voz e foram obtidos valores maiores em todos os domínios. Concluiu-se que a intervenção intensiva beneficiou o participante e impactou positivamente sua qualidade de vida.

ABSTRACT Machado-Joseph disease is the most prevalent form of spinocerebellar ataxia in Brazil, and has dysphagia and dysarthria among its main clinical signs. This case report aims to ascertain the effects of intensive speech-language intervention in a patient with Machado-Joseph disease. Data collection was performed based on speech and swallowing assessment protocols and self-assessment protocols specific to swallowing-related and communication-related quality of life. Quantitative assessments of acoustic parameters were also performed. The intervention was administered through the Lee Silverman method, which is an intensive program aimed at increasing vocal intensity. The results of clinical and instrumental evaluations showed improvement in all motor parameters of speech (respiration, phonation, resonance, articulation, and prosody), besides a reduction in dysphagic signs. Regarding vocal quality, there was a decrease in hoarseness and instability, regularization of jitter and shimmer, increased vocal intensity, and improved coordination of words and phrases by expiration, as well as slight improvement of diadochokinesis. After intervention, self-assessment of swallowing-related quality of life was unchanged or improved in the domains directly related to food, but reduced in emotional domains. The patient reported satisfaction in all domains of voice-related quality of life, and scores were increased in all domains. We conclude that intensive intervention was beneficial for the participant and positively impacted their quality of life.

Assessment of Bone Mineral Density of Patients with Spinocerebellar Ataxia Type 3

OBJECTIVE: Machado-Joseph disease (MJD) is a spinocerebellar ataxia, and osteoporosis is a multifactor disease that may affect patients with neurologic conditions. The frequency of osteoporosis among MJD patients, however, has not been studied. The purpose of this study is to evaluate bone mineral density (BMD) and identify correlations between clinical factors and frequency of vertebral fractures in patients with MJD. METHODS: Clinical data, lumbar X-rays and BMD data were obtained in 30 patients with MJD. RESULTS: Ten patients (33.3%) showed low BMD in at least one of the sites studied based on Z-scores. The Z-score correlated directly with body mass index, and the femoral neck Z-score was inversely correlated with cytosine-adenine-guanine (CAG) expansion. There was no correlation between BMD and other clinical factors. Forty-three percent of the patients reported previous pathologic fractures. Five patients (16.7%) had at least one fracture detected by lumbar X-ray. CONCLUSION: Low BMD and fractures are frequent among MJD patients, and careful management of BMD may be beneficial for these patients.

Paula Coutinho's outstanding contribution to the definition of Machado-Joseph disease / A excepcional contribuição de Paula Coutinho na definição da doença de Machado-Joseph

ABSTRACT Machado-Joseph disease, also known as spinocerebellar ataxia type 3, is the most common form of autosomal dominant ataxia in the world. Paula Coutinho, a highly-regarded Portuguese neurologist worldwide, had a seminal participation in the definition of this disease, more than 40 years ago.

RESUMO A doença de Machado-Joseph, também conhecida como ataxia espinocerebelar tipo 3 (SCA3), representa a forma mais comum de ataxia hereditária autossômica dominante no mundo. Paula Coutinho, neurologista portuguesa de reputação mundial, teve participação fundamental na definição desta doença há mais de 40 anos.

Doença de Machado-Joseph no contexto da pessoa/família que a vivencia: alterações cotidianas e expectativas futuras / Enfermedad de Machado-Joseph en el contexto de la persona/familia que la vive: alteraciones cuotidianas y expectativas futuras / Machado-Joseph disease in the context of the person/familythat experiences it: daily changes and future expectations

Objetivo: conhecer as principais alterações cotidianas e as expectativas futuras vivenciadas pela pessoa/família com a doença de Machado-Joseph (DMJ). Métodos: Pesquisa exploratória, descritiva de abordagem qualitativa, realizada com uma pessoa com a DMJ e com cinco familiares, em uma cidade do Rio Grande do Sul. Os dados coletados durante uma visita domiciliar realizada no mês de abril de 2016, por meio de entrevista semiestruturada e observação participante, foram submetidos à análise de conteúdo. Resultados: Emergiram cinco categorias: (des)conhecimento da doença antes do diagnóstico; conhecimento da doença após o diagnóstico; dificuldades do diagnóstico; alterações vivenciadas após o diagnóstico; e expectativas para o futuro com a DMJ. Conclusão: Torna-se necessário mais investimento por parte dos profissionais da saúde, especialmente dos enfermeiros, na realização de estudos voltados a buscar auxiliar as pessoas/familiares que convivem com a DMJ.

Objective: to know the main daily changes and future expectations experienced by the person/family with Machado-Joseph disease. Methods: Exploratory, descriptive study of qualitative approach, carried out with a person with Machado-Joseph disease and with five relatives, in a city of Rio Grande do Sul. The data collected during a home visit conducted in April 2016 by. through semi-structured interviews and participant observation were subjected to content analysis. Results: Emerged five categories: (Des)knowledge of the disease before diagnosis; Knowledge of disease after the diagnosis; Difficulties of diagnosis; experienced changes after diagnosis; Expectations for the future with Machado-Joseph disease. Conclusion: It is necessary, more investment by health professionals, especially nurses, in conducting studies aimed to seek help people / families living with Machado-Joseph disease.

Objetivo: conocer las principales alteraciones cuotidianas y las expectativas futuras vividas por la persona/familia con la enfermedad de Machado-Joseph. Metodología: Investigación exploratoria, descriptiva de enfoque cualitativo, realizada con una persona con la enfermedad de Machado-Joseph y cinco miembros de la familia, en una ciudad del estado del Rio Grande do Sul (Brasil). Los datos recogidos durante una visitación domiciliar realizada en el mes de abril/2016, por medio de entrevista semiestructurada y observación participante, fueron sometidos al análisis de contenido. Resultados: Surgieron cinco categorías: (des)conocimiento de la enfermedad antes del diagnóstico; conocimiento de la enfermedad después del diagnóstico; dificultades del diagnóstico; alteraciones vividas después del diagnóstico; expectativas para el futuro con la enfermedad de Machado-Joseph. Conclusión: Es necesario más inversión por parte de los profesionales de la salud, especialmente de los enfermeros, en la realización de estudios direccionados al auxilio a las personas/familiares que conviven con la enfermedad de Machado-Joseph.

Augmented movement strategies for postural control in patients with spinocerebellar ataxia type 3: a case-control study / Estratégias aumentadas de movimento para controle postural em pacientes com ataxia espinocerebellar tipo 3: caso-controle

INTRODUCTION: This study investigated the movement strategies for postural control in patients with spinocerebellar ataxia type 3 (SCA3). METHODS: This case-control study enrolled 5 patients with SCA3 (aged 41 to 51 years) and 5 healthy participants group-matched by age, body mass and body height.Participants performed 3 trials lasting 30 s each of postural tasks characterized by: feet apart or together; eyes open or closed. Center of pressure (CoP) data was quantified using three-dimensional (3D: number of high-density and high-speed regions, average and maximal distances among regions), two-dimensional (2D: elliptical area, average velocity) and one-dimensional (1D: standard deviation, velocity) parameters. RESULTS: Analysis of variance revealed significant interaction effect between group*task for 1D (F12,238=3.496, p<0.001), 2D (F6,184=11.472, p<0.001), and 3D parameters (F12,238=2.543, p=0.004). Significant univariate effects for postural task were observed for all parameters, with higher body sway values under visual and biomechanical constraints, either separated or combined. CONCLUSIONS: Patients with SCA3 presented augmented movement strategiescompared with healthy subjects, characterized by increasing body sway under more demanding biomechanical and/ or visual constraints. Three-dimensional kinematic mapping revealed either random movement strategies or a unique movement strategy characterized by a stochastic CoP distribution, with high CoP speed to correct for large body sway deviations.

INTRODUÇÃO: Este estudo investigou as estratégias de movimento para controle postural em pacientes com ataxia espinocerebelar tipo 3 (SCA3). MÉTODOS: Este estudo de caso-controle incluiu cinco pacientes com SCA3 (idade 41 a 51 anos) e cinco participantes saudáveis, agrupados por idade, massa corporal e altura corporal. Os participantes realizaram três ensaios 30 s cada uma das tarefas posturais caracterizadas por: pés separados ou juntos; olhos abertos ou fechados. Os dados do centro de pressão (CoP) foram quantificados usando tridimensional (3D: número de alta densidade e alta velocidade regiões, distâncias médias e máximas entre regiões), bidimensional (2D: área elíptica, velocidade média) e unidimensional (1D: Desvio padrão, velocidade). RESULTADOS: Análise de variância Revelou um efeito de interação significativo entre a tarefa * grupo 1D (F12.238 = 3.496, p <0.001), 2D (F6.184 = 11.472, p <0.001) e os parâmetros 3D (F12,238 = 2,543, p = 0,004). Efeitos univariados significativos foram observados para todos os parâmetros, com maiores valores de balanço corporal sob restrições visuais e biomecânicas, separadas ou combinados. CONCLUSÕES: Os pacientes com SCA3 apresentaram estratégias de movimento comparadas com indivíduos saudáveis, aumentando o balanço do corpo sob condições biomecânicas e / ou restrições visuais. O mapeamento cinemático tridimensional revelou estratégias de movimento aleatório ou uma estratégia de movimento caracterizada por uma distribuição estocástica de CoP, com alta velocidade de correção para os grandes desvios.

Itajaí, Santa Catarina - Azorean ancestry and spinocerebellar ataxia type 3 / Itajaí, Santa Catarina - descendência açoriana e ataxia espinocerebelar tipo 3

ABSTRACT The authors present a historical review of spinocerebellar ataxia type 3/Machado-Joseph disease (SCA3/MJD), the most common form of spinocerebellar ataxia in Brazil, and consider the high frequency of cases in families from Itajaí, a city on the coast of the state of Santa Catarina with a large population of Portuguese/Azorean descent.

RESUMO Os autores apresentam uma revisão histórica sobre a ataxia spinocerebelar tipo 3/doença de Machado-Joseph (SCA3/DMJ), que representa a forma de SCA mais comum em nosso país, considerando a alta frequência de casos oriundos de famílias da cidade de Itajaí, no litoral de Santa Catarina, cidade com ascendência portuguesa-açoriana.

Mid- and long-term anxiety levels associated with presymptomatic testing of Huntington's Disease, Machado-Joseph Disease, Machado-Joseph disease, and familial amyloid polyneuropathy

Objective: To study anxiety as a variable of the mid- and long-term psychological impact of pre-symptomatic testing for three autosomal dominant late-onset disorders – Huntington’s disease (HD), Machado-Joseph disease (MJD) and familial amyloid polyneuropathy (FAP) TTR V30M – in a Portuguese sample. Methods: This cross-sectional study included 203 participants: 170 (83.7%) underwent pre-symptomatic testing for FAP, 29 (14.3%) for HD, and 4 (2%) for MJD. Of the 203 participants, 73 (36.0%) were asymptomatic carriers, 29 (14.5%) were symptomatic carriers, 9 (4.5%) were diagnosed with FAP and had a liver transplant, and 89 (44.5%) were non-carriers. Most were women (58.1%) and married (66.5%). The anxiety variable was assessed using the Zung Self-Rating Anxiety Scale (SAS). Results: The anxiety scores were higher for symptomatic carriers and for those who underwent psychological support consultations over the years. For symptomatic carriers, the mean scores were superior to 40 points, which reflects clinical anxiety. Conclusion: Although it was not possible to differentiate between the mid- and long-term psychological impacts, this study supports the conclusion that the proximity to the age of symptoms onset might be a trigger for anxiety.

Caracterização do equilíbrio, risco de quedas e qualidade de vida em pessoas com doença de Machado-Joseph / Characterization of balance, accidental falls and quality of life in patients with Machado-Joseph disease

Introdução: A doença de Machado-Joseph (DMJ) é uma doença neurodegenerativa bastante incapacitante que afeta principalmente os sistemas motores dos sujeitos acometidos, ocasionando uma redução da autonomia e das atividades de vida diária devido à predisposição ao risco de quedas, o que pode gerar complicações emocionais, isolamento social e uma interferência na qualidade de vida. Objetivo: Avaliar e correlacionar o equilíbrio, risco de quedas e qualidade de vida de sujeitos com Doença de Machado-Joseph. Material e métodos: Estudo de abordagem quantitativa, do tipo descritiva correlacional, que avaliou sete sujeitos com DMJ, de ambos os sexos, com idade média de 46,28 anos, residentes em Santa Maria/ RS. Os instrumentos utilizados foram ficha de avaliação, escala de equilíbrio de Berg, Dynamic Gait Index (DGI) e Questionário SF-36. Resultados: A percepção geral sobre a qualidade de vida foi moderadamente baixa, com ênfase nos domínios de função física. Os resultados evidenciaram um prejuízo do equilíbrio estático e dinâmico desses sujeitos, além de um risco aumentado a quedas apresentando correlação significativa, o que demostra que quanto maior o desequilíbrio mais propenso a quedas estão esses sujeitos. O aspecto capacidade funcional da qualidade de vida apresentou correlação significativa com o equilíbrio dos sujeitos avaliados. Conclusão: Tendo em vista a importância da fisioterapia no tratamento de sujeitos com DMJ, faz-se necessário uma avaliação completa e precisa para que se possam estabelecer estratégias satisfatórias de intervenção no âmbito da promoção da saúde. (AU)

Introduction: The Machado-Joseph disease (MJD) is a disabling neurodegenerative disease which affects the motor systems of the affected subjects, causing a reduction of autonomy and activities of daily living due to the predisposition to risk of falls. It can generate emotional complications, social isolation and interference in quality of life. Objective: To assess and correlate the balance, risk of falls and quality of life of subjects with Machado-Joseph disease. Methods: This is a quantitative study, descriptive correlational, which evaluated seven subjects with MJD, of both sexes, with mean age 46.28 years old, residents in Santa Maria/RS. The instruments used were the evaluation form, Berg Balance Scale, Dynamic Gait Index (DGI) and Questionnaire SF-36. Results: The general perception about quality of life was moderately low, with emphasis in the areas of physical function. The results showed a loss of static and dynamic balance of these subjects, as well as an increased risk factor for falls, showing significant correlation, which demonstrates that greater the imbalance, more prone to falls the patients are. The functional capacity aspect of quality of life showed significant correlation with the balance of the subjects evaluated. Conclusion: In view of the importance of physical therapy in the treatment of subjects with MJD, it is required a full assessment and needs so that satisfactory intervention strategies in health promotion can be established. (AU)

Lithium carbonate and coenzyme Q10 reduce cell death in a cell model of Machado-Joseph disease

Machado-Joseph disease (MJD) or spinocerebellar ataxia type 3 (SCA3) is an autosomal dominant neurodegenerative disorder caused by expansion of the polyglutamine domain of the ataxin-3 (ATX3) protein. MJD/SCA3 is the most frequent autosomal dominant ataxia in many countries. The mechanism underlying MJD/SCA3 is thought to be mainly related to protein misfolding and aggregation leading to neuronal dysfunction followed by cell death. Currently, there are no effective treatments for patients with MJD/SCA3. Here, we report on the potential use of lithium carbonate and coenzyme Q10 to reduce cell death caused by the expanded ATX3 in cell culture. Cell viability and apoptosis were evaluated by MTT assay and by flow cytometry after staining with annexin V-FITC/propidium iodide. Treatment with lithium carbonate and coenzyme Q10 led to a significant increase in viability of cells expressing expanded ATX3 (Q84). In addition, we found that the increase in cell viability resulted from a significant reduction in the proportion of apoptotic cells. Furthermore, there was a significant change in the expanded ATX3 monomer/aggregate ratio after lithium carbonate and coenzyme Q10 treatment, with an increase in the monomer fraction and decrease in aggregates. The safety and tolerance of both drugs are well established; thus, our results indicate that lithium carbonate and coenzyme Q10 are good candidates for further in vivo therapeutic trials.

Clinical Characteristics, Radiological Features and Gene Mutation in 10 Chinese Families with Spinocerebellar Ataxias / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Spinocerebellar ataxias (SCAs) are a group of neurodegenerative disorders that primarily cause the degeneration in the cerebellum, spinal cord, and brainstem. We study the clinical characteristics, radiological features and gene mutation in Chinese families with SCAs.</p><p><b>METHODS</b>In this study, we investigated 10 SCAs Chinese families with SCA1, SCA3/Machado-Joseph disease (MJD), SCA7, SCA8. There were 27 people who were genetically diagnosed as SCA, of which 21 people showed clinical symptoms, and 6 people had no clinical phenotype that we called them presymptomatic patients. In addition, 3 people with cerebellar ataxia and cataracts were diagnosed according to the Harding diagnostic criteria but failed to be recognized as SCAs on genetic testing. Clinical characteristic analyses of each type of SCAs and radiological examinations were performed.</p><p><b>RESULTS</b>We found that SCA3/MJD was the most common subtype in Han population in China, and the ratio of the pontine tegmentum and the posterior fossa area was negatively correlated with the number of cytosine-adenine-guanine (CAG) repeats; the disease duration was positively correlated with the International Cooperative Ataxia Rating Scale score; and the CAG repeats number of abnormal alleles was negatively correlated with the age of onset.</p><p><b>CONCLUSIONS</b>Collectively our study is a systematic research on SCAs in China, which may help for the clinical diagnosis and prenatal screening of this disease, and it may also aid toward better understanding of this disease.</p>

Subcellular localization of ataxin-3 and its effect on the morphology of cytoplasmic organoids / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To explore the subcellular localization of ataxin-3 and the effect of polyglutamine (polyQ) expansion mutation on the morphology of mitochondrion, golgi apparatus and endoplasmic reticulum.</p><p><b>METHODS</b>Transient transfection was employed to build cell models expressing wild-type or mutant ataxin-3 proteins. Indirect immunofluorescence was applied to identify markers of organelle membrane. The results were observed under a laser scanning confocal microscope.</p><p><b>RESULTS</b>No co-localization was observed for ataxin-3 protein and mitochondrial marker TOM20, but the percentage of cells with mitochondrial fragmentation has increased in cells expressing mutant ataxin-3 (P<0.05). No co-localization was observed for ataxin-3 protein and golgi marker GM130, and mutant ataxin-3 did not cause golgi fragmentation. Wide type and polyQ-expanded ataxin-3 both showed partial co-localization with ER marker calnexin. The latter showed more overlap with calnexin, and the overlapping signals were mostly located in the places where aggregates were situated.</p><p><b>CONCLUSION</b>PolyQ-expanded ataxin-3 protein may indirectly affect the integrity of mitochondria, but may cause no effect on the structure and functions of golgi apparatus. Endoplasmic reticulum may be another place where extended ataxin-3 protein can induce cytotoxicity in addition to the nucleus.</p>

Nerve growth factor for the treatment of spinocerebellar ataxia type 3: an open-label study / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Spinocerebellar ataxia type 3 (SCA3) is the most common subtype of SCA worldwide, and runs a slowly progressive and unremitting disease course. There is currently no curable treatment available. Growing evidence has suggested that nerve growth factor (NGF) may have therapeutic effects in neurodegenerative diseases, and possibly also in SCA3. The objective of this study was to test the efficacy of NGF in SCA3 patients.</p><p><b>METHODS</b>We performed an open-label prospective study in genetically confirmed adult (>18 years old) SCA3 patients. NGF was administered by intramuscular injection (18 μg once daily) for 28 days consecutively. All the patients were evaluated at baseline and 2 and 4 weeks after treatment using the Chinese version of the scale for assessment and rating of ataxia (SARA).</p><p><b>RESULTS</b>Twenty-one SCA3 patients (10 men and 11 women, mean age 39.14 ± 7.81 years, mean disease duration 4.14 ± 1.90 years, mean CAG repeats number 77.57 ± 2.27) were enrolled. After 28 days of NGF treatment, the mean total SARA score decreased significantly from a baseline of 8.48 ± 2.40 to 6.30 ± 1.87 (P < 0.001). Subsections SARA scores also showed significant improvements in stance (P = 0.003), speech (P = 0.023), finger chase (P = 0.015), fast alternating hand movements (P = 0.009), and heel-shin slide (P = 0.001).</p><p><b>CONCLUSIONS</b>Our preliminary data suggest that NGF may be effective in treating patients with SCA3.</p>

Spinocerebellar ataxia type 3: subphenotypes in a cohort of brazilian patients / Ataxia espinocerebelar do tipo 3: subfenótipos em uma coorte de pacientes brasileiros

Spinocerebellar ataxia type 3 (SCA3) involves cerebellar, pyramidal, extrapyramidal, motor neuron and oculomotor systems with strong phenotypic heterogeneity, that lead us to classify the disorder into different clinical subtypes according to the predominantly affected motor systems. Method The series comprises 167 SCA3 patients belonging to 68 pedigrees, studied from 1989-2013. These patients were categorized into seven different subphenotypes. Results SCA3 cases were clustered according to the predominant clinical features. Three most common forms were subphenotype 2, characterized by ataxia and pyramidal symptom was observed in 67.5%, subphenotype 3 with ataxia and peripheral signs in 13.3%, and subphenotype 6 with pure cerebellar syndrome in 7.2%. Conclusion Our study was the first to systematically classify SCA3 into seven subphenotypes. This classification may be particularly useful for determination of a more specific and direct phenotype/genotype correlation in future studies. .

A ataxia espinocerebelar do tipo 3 (AEC3) envolve os sistemas cerebelar, piramidal, extrapiramidal, do neurônio motor e oculomotor, com uma grande heterogeneidade fenotípica, o que nos levou a classificar essa desordem em diferentes subtipos clínicos de acordo com o sistema predominantemente afetado. Método Nossa série compreende 167 pacientes com AEC3, pertencentes a 68 famílias, avaliados de 1989 a 2013. Esses pacientes foram classificados em 7 diferentes subtipos. Resultados Os pacientes com AEC3 foram agrupados de acordo com as características clínicas predominantes. As três formas mais comum foram o subfenótipo 2, caracterizado por ataxia e sintomas piramidais, observado em 67,5% dos pacientes, subfenótipo 3 com ataxia e sinais periféricos, em 13,3%, e subfenótipo 6 com síndrome cerebelar pura, em 7,2%. Conclusão Nosso estudo foi o primeiro a classificar sistematicamente AEC3 em sete subtipos. Esta classificação pode ser particularmente útil para correlacionar fenótipo/genótipo com mais especificidade em futuros estudos. .