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Multiple system atrophy is a rare, fatal neurodegenerative disorder with symptoms of autonomic failure plus parkinsonism, cerebellar ataxia, or both. We report results of the first prospective natural history study of multiple system atrophy in the USA, and the effects of phenotype and autonomic failure on prognosis. We recruited participants with probable multiple system atrophy—of either the parkinsonism subtype (MSA-P) or the cerebellar ataxia subtype (MSA-C)—at 12 neurology centres in the USA specialising in movement or autonomic disorders. We followed up patients every 6 months for 5 years and assessed them with the Unified Multiple System Atrophy Rating Scale part I (UMSARS I; a functional score of symptoms and ability to undertake activities of daily living), UMSARS II (neurological motor evaluation), and the Composite Autonomic Symptoms Scale (COMPASS)-select (a measure of autonomic symptoms and autonomic functional status). We assessed potential predictors of outcome. We used Cox proportional hazards models to calculate univariate hazard ratios for shorter survival using age at disease onset as a continuous variable and sex, clinical phenotype, and early development of neurological and autonomic manifestations as categorical variables. We recruited 175 participants. Mean age at study entry was 63·4 years (SD 8·6). Median survival from symptom onset was 9·8 years (95% CI 8·8–10·7) and median survival from enrolment was 1·8 years (0·9–2·7). Participants with severe symptomatic autonomic failure (symptomatic orthostatic hypotension, urinary incontinence, or both) at diagnosis (n=62) had a worse prognosis than those without severe disease (n=113; median survival 8·0 years, 95% CI 6·5–9·5 vs 10·3 years, 9·3–11·4; p=0·021). At baseline, patients with MSA-P (n=126) and MSA-C (n=49) had much the same symptoms and functional status: mean UMSARS I 25·2 (SD 8·08) versus 24·6 (8·34; p=0·835); mean UMSARS II 26·4 (8·8) versus 25·4 (10·5; p=0·764); COMPASS-select 43·5 (18·7) versus 42·8 (19·6; p=0·835). Progression over 5 years, assessed by change in UMSARS I, UMSARS II, and COMPASS-select, was modest. Probable multiple system atrophy is a late-stage disease with short survival. The natural histories of MSA-P and MSA-C are similar and severe symptomatic autonomic failure at diagnosis is associated with worse prognosis. US National Institutes of Health, Mayo Clinic, and Kathy Shih Memorial Foundation.

Background Cognitive dysfunction is increasingly recognized in multiple system atrophy (MSA). Locus coeruleus (LC) integrity is associated with cognitive performance both in healthy controls (HC) and neurodegenerative conditions such as Parkinson’s disease (PD). Furthermore, cortical glucose hypometabolism is associated with impaired cognitive performance in MSA. However, knowledge about LC sub-regional degeneration and its association with cognitive dysfunction and cortical glucose metabolism is lacking. Objective To investigate LC sub-regional involvement and its association with cognitive impairment and brain metabolism in MSA. Methods Eleven MSA, eighteen PD, and eighteen HC participants were included in the study. Neuromelanin-sensitive MRI was used to determine rostral, middle and caudal LC neuromelanin signals. Brain glucose metabolism was investigated with [ 18 F]Fluorodeoxyglucose PET (FDG-PET). The Montreal Cognitive Assessment (MoCA) was used as a measure of global cognition. Results Middle LC neuromelanin signal was significantly reduced in MSA [ t (43) = 3.70, corrected- p  = 0.004] and PD [ t (43) = 2.63, corrected- p  = 0.041] compared to HC, while caudal LC was only reduced in MSA [ t (43) = 2.82, corrected- p  = 0.030]. In MSA, decreased rostral LC neuromelanin was associated with lower MoCA scores ( ρ  = 0.760, p  = 0.006) which, in turn, were associated with lower frontal cortex glucose metabolism. An association between rostral LC neuromelanin signal and frontal cortex glucose metabolism was found in exploratory analyses. Conclusion Loss of LC neuromelanin signal was found in MSA, the middle and caudal parts being targeted. Rostral LC neuromelanin signal loss was associated with both frontal cortex hypometabolism and lower MoCA scores. This pathophysiological link should be further investigated as the noradrenergic system transmission is amenable to pharmacological manipulation.

BackgroundParkinsonian syndromes are characterized by a wide spectrum of non-motor symptoms. A few studies explored cognitive deficits and neuropsychiatric symptoms in atypical parkinsonism compared to Parkinson’s disease (PD). The study was performed to identify cognitive and neuropsychiatric differences between PD, multiple system atrophy (MSA) and progressive supranuclear palsy (PSP) and to evaluate the influence of clinical features, depressive symptomatology and apathy on cognitive performances in the three groups.MethodsFifty-five PD, 44 MSA and 42 PSP patients underwent cognitive tests assessing attention, language, memory, visuospatial and executive functions as well as scales assessing depression and apathy. Out of these patients, 20 PD, 20 MSA and 20 PSP patients were selected to be matched for age, education and global cognitive status. Within each whole patients group, correlational analysis was performed between clinical, behavioural and cognitive parameters.ResultsThe main difference among the groups matched was on cognitive tests exploring verbal learning, executive and linguistic functions. The PSP group was more impaired than the PD and MSA groups on cognitive tests assessing executive functions. On the other hand, MSA group obtained similar cognitive performance to the PD group. As to behavioural symptoms, in whole PSP and MSA groups, apathy and depression were more severe than in PD group, while apathy (but not depression) were more severe in the PSP group as compared to the MSA group.ConclusionsThe present study underlined the pervasiveness of cognitive deficits, apathy and depressive symptoms in PSP, whereas little cognitive differences were found between PD and MSA. The findings indirectly supported a dysfunction of prefronto-subcortical circuitries (i.e., dorsolateral prefrontal and limbic circuits) in PSP and PD. Cognitive similarities between MSA and PD reinforced the pivotal role of altered basal ganglia and corresponding frontal deafferentation in the occurrence of the cognitive deficits.

BackgroundHealth-related quality of life (Hr-QoL) scales provide crucial information on neurodegenerative disease progression, help improve patient care and constitute a meaningful endpoint for therapeutic research. However, Hr-QoL progression is usually poorly documented, as for multiple system atrophy (MSA), a rare and rapidly progressing alpha-synucleinopathy. This work aimed to describe Hr-QoL progression during the natural course of MSA, explore disparities between patients and identify informative items using a four-step statistical strategy.MethodsWe leveraged the data of the French MSA cohort comprising annual assessments with the MSA-QoL questionnaire for more than 500 patients over up to 11 years. A four-step strategy (1) determined the subdimensions of Hr-QoL, (2) modelled the subdimension trajectories over time, (3) mapped item impairments with disease stages and (4) identified most informative items.ResultsFour dimensions were identified. In addition to the original motor, non-motor and emotional domains, an oropharyngeal component was highlighted. While the motor and oropharyngeal domains deteriorated rapidly, the non-motor and emotional aspects were already impaired at cohort entry and deteriorated slowly over the disease course. Impairments were associated with sex, diagnosis subtype and delay since symptom onset. Except for the emotional domain, each dimension was driven by key identified items.ConclusionThe multidimensional Hr-QoL deteriorates progressively over the course of MSA and brings essential knowledge for improving patient care. As exemplified with MSA, the thorough description of Hr-QoL over time using the four-step strategy can provide perspectives on neurodegenerative diseases’ management to ultimately deliver better support focused on the patient’s perspective.

Multiple system atrophy (MSA) is a progressive neurodegenerative disorder characterized by parkinsonism, cerebellar ataxia, autonomic dysfunction, and sleep disturbances, such as rapid eye movement sleep behavior disorder (RBD). The association between sleep disturbances, including RBD, and decreased quality of life (QOL) in patients with MSA has not been elucidated. We aimed, therefore, to evaluate this association in individuals with MSA. We assessed a total of 34 patients with MSA (44.1 % male; 61.8 % MSA with predominant cerebellar ataxia) for sleep disturbances, RBD, and QOL using the Parkinson’s Disease Sleep Scale-2 (PDSS-2), RBD Screening Questionnaire (RBDSQ), and Parkinson’s Disease Questionnaire-39 (PDQ-39). Multiple regression analyses were conducted with the Summary Index (SI) of PDQ-39 total and each domain as dependent variable and age, sex, urinary dysfunction, and the PDSS-2 total, sleep, motor, parkinsonism, and the RBDSQ scores as independent variables. The rate of PDSS-2 scores ≥ 15 was 41.2 %, while that of RBDSQ scores ≥ 5 was 17.6 %. Multiple regression analyses revealed that the PDSS-2 total score significantly contributed to increase in the SI of PDQ-39 total (β = 0.646, P < 0.001), mobility (β = 0.663, P < 0.001), activities of daily living (β = 0.650, P < 0.001), emotional well-being (β = 0.426, P = 0.019), and bodily discomfort (β = 0.566, P < 0.001). We demonstrated a strong relationship between the sleep disturbances and worsening QOL in patients with MSA. Healthcare providers should also focus on sleep disturbances when managing patients with MSA. •Patients with MSA often develop sleep disturbances such as RBD.•Sleep disturbance and quality of life were strongly correlated in patients with MSA.•Healthcare providers should focus on sleep disturbances when managing MSA patients.

•Cognitive impairments in multiple system atrophy.•Neuropsychological tests to compare cognitive dysfunction between two types of multiple system atrophy: MSA-P and MSA-C.•Cognitive impairment in multiple system atrophy patients with or without postural hypotension. We evaluated neuropsychological tests to compare cognitive impairment between two types of multiple system atrophy: predominant parkinsonism (MSA-P) and predominant cerebellar ataxia (MSA-C). This cross-sectional study included 14 patients diagnosed with MSA: four with MSA-C and ten with MSA-P. Presence of motor symptoms was determined by using the Unified Rating MSA Scale (URMSAS). Non-motor symptoms were evaluated by the Short Form Health Survey (SF-36), Scales for Outcomes in Parkinson’s disease Autonomic (SCOPA-AUT), Hospital Anxiety and Depression Scale (HADS), and Beck Depression Inventory (BDI). Neuropsychological tests were used to evaluate general cognition, verbal and visual memory, working memory, constructional ability, visuospatial, language, and executive function. The median age of the patients was 62 years, median disease duration was 3.5 years, and median education level was 10 years. The median Mini-Mental State Examination (MMSE) score was 26.5 points, and median Mattis Dementia Rating Scale (MDRS) score was 131.5. We compared the continuous data between the two MSA subtypes and observed that bodily pain reported in the quality of life questionnaire, SF-36, was worse in MSA-P (p<0.05), and attention function evaluated by MDRS was significantly lower in MSA-C than MSA-P (p<0.05). Our comparative study of cognitive impairment in MSA-P and MSA-C showed that both groups had impaired executive and visuospatial functions, while the attention deficit was predominant only in MSA-C. These findings support the concept that cognitive deficit originates from striatofrontal dysfunction and cerebellar degeneration. Our study also suggests that cognitive impairment is relevant in MSA, and clinical neurologists should not neglect evaluation of these aspects in their daily clinical practice.

ObjectivesPeople with multiple system atrophy (MSA) and their carers may have many concerns about their disease and the future. This survey of people with MSA and their carers aimed to increase understanding of end-of-life care and palliative care for this group.MethodsA survey was undertaken by the MSA Trust of people living with MSA and carers of those with the condition between August and October 2022.Results520 people responded: 215 people with MSA, 214 carers and 91 former carers. The modal class for age in people with MSA was 65–74 years, with 52% male. 76% of people living with MSA had thought to some extent about what they wanted to happen towards the end of their lives. 38% of respondents had discussed end-of-life care options with a healthcare professional and of those who had, over 81% found the conversation helpful. Nevertheless, for 37% of former carers, the death had been unexpected. Only a minority of people living with MSA had been referred for specialist palliative care. 65% of the former carers reported that they were satisfied with the quality of end-of-life care.ConclusionPeople with MSA and their carers continue to face many complex physical and emotional issues that would benefit from palliative care. Discussions about care at the end of life were generally perceived as helpful, but although the deterioration was often discussed, many families seemed unprepared for the death. Palliative care services were involved but this appeared limited.

We aimed to elucidate the effect of cerebellar degeneration in relation to cognition in multiple system atrophy (MSA). Thirty-two patients diagnosed with probable MSA and 32 age- and gender-matched healthy controls (HCs) were enrolled. We conducted voxel-based morphometry (VBM) for anatomical images and independent component analysis (ICA), dual-regression analysis, and seed-based analysis for functional images with voxel-wise gray matter correction. In the MSA group, a widespread cerebellar volume loss was observed. ICA and dual-regression analysis showed lower functional connectivity (FC) in the left executive control and salience networks in regions located in the cerebellum. Seed-based analysis using the identified cerebellar regions as seeds showed extensive disruptions in cerebello-cerebral networks. Global cognitive scores correlated with the FC values between the right lobules VI/crus I and the medial prefrontal/anterior cingulate cortices and between the same region and the amygdala/parahippocampal gyrus. Our study indicates that cerebellar degeneration in MSA causes segregation of cerebellar-cerebral networks. Furthermore, the cognitive deficits in MSA may be driven by decreased cerebello-prefrontal and cerebello-amygdaloid functional connections.

Background: Palliative care is rarely being offered to patients with Parkinson’s disease. Aim: To assess symptom prevalence, severity and palliative care needs in advanced stages of Parkinsonism. Design: A cross-sectional survey using a palliative care assessment tool, the Palliative Outcome Scale was administered to patients. Setting/participants: Eight-two patients with a diagnosis of idiopathic Parkinson’s disease, multiple systems atrophy or progressive supranuclear palsy were included in the study. Results: Their mean age and disease stages 3–5 Hoehn and Yahr were 67 years and 4.1, respectively. Patients reported a mean of 10.7 (standard deviation = 3.9) physical symptoms. Over 80% had pain, fatigue, day time somnolence and problems with mobility. Other symptoms in 50%–80% included constipation, loss of bladder control, swallowing difficulties, drooling, breathlessness and sleep problems. Symptoms rated as causing severe problems were pain, fatigue, constipation and drooling. Assessment of mood revealed 70% of the patients felt anxiety and 60% had felt depressed. Eight-five per cent felt their families were anxious or worried about them. Thirty-eight per cent would have liked more information and 42% had practical problems that still needed to be addressed. There was a positive correlation between number of symptoms and disease severity (r = 0.39, p = 0.01). The total mean Palliative Outcome Scale score was 13.6 (standard deviation = 6.1), suggesting moderate palliative care needs. Conclusion: This is the first study to describe the care needs of people with Parkinson’s disease using the Palliative Outcome Scale tool. The burden of symptoms and concerns was high in advanced stages of disease. It might be appropriate that people severely affected by these conditions should be considered for referral to specialist palliative care services.

ObjectiveWe examined the anatomical involvement related to cognitive impairment in patients with multiple system atrophy (MSA).MethodsWe examined 30 patients with probable MSA and 15 healthy controls. All MSA patients were assessed by the Unified MSA-Rating scale and Addenbrooke’s Cognitive Examination-Revised (ACE-R). We classified 15 MSA patients with ACE-R scores > 88 as having normal cognition (MSA–NC) and 15 with scores ≤ 88 as having cognitive impairment (MSA–CI). All subjects underwent 3 T MRI scanning and were investigated using voxel-based morphometry and diffusion tensor imaging.ResultsBoth the MSA–NC and MSA–CI patients exhibited cerebellar but not cerebral atrophy in voxel-based morphometry compared to controls. In contrast, tract-based spatial statistics revealed widespread and significantly decreased fractional anisotropy (FA) values, as well as increased mean diffusivity, radial diffusivity, and axial diffusivity in both the cerebrum and cerebellum in MSA–CI patients compared to controls. MSA–NC patients also exhibited similar involvement of the cerebellum but less extensive involvement of the cerebrum compared with the MSA–CI patients. In particular, FA values in MSA–CI patients were significantly decreased in the anterior part of the left corpus callosum compared with those in MSA–NC patients. The mean FA values in the left anterior part of the corpus callosum were significantly correlated with total ACE-R scores and subscores (memory, fluency, and language) in MSA patients.ConclusionsDecreased FA values in the anterior corpus callosum showed a significant correlation with cognitive impairment in MSA.