Perfil neuropsicológico em pacientes com lesões vasculares subcorticais

Vascular cognitive impairment (VCI) is characterized by cognitive compromise predominantly of executive dysfunction. OBJECTIVES: To assess cognitive functions in VCI, focusing on executive functions, to observe functional losses in relation to activities of daily living (ADLs) and to detect early symptoms prior to the onset of dementia. METHODS: We evaluated healthy subjects matched for gender, education and age to patients with diagnosis of subcortical vascular disease who had a stroke classified into three groups: 1) vascular lesions and no impairment; 2) vascular cognitive impairment with no dementia (VCIND); 3) vascular dementia (VaD). RESULTS AND DISCUSSION: The performance on neuropsychological tests differed among groups, worsening with increased impairment level. The probable VaD group demonstrated impaired performance in memory, processing speed and verbal production, while the VCIND group showed attention deficits. CONCLUSION: Impairment in executive functions and difficulties in ADLs allow us to differentiate levels of impairment in groups of subcortical vascular disease.O comprometimento cognitivo vascular (CCV) é caracterizado por comprometimento cognitivo predominantemente sob a forma de disfunção executiva. OBJETIVOS: Avaliar as funções cognitivas no CCV, enfocando as funções executivas, observar as perdas funcionais em relação às atividades cotidianas (AVDs) e detectar os primeiros sintomas antes do início da demência. MÉTODOS: Foram avaliados indivíduos controles saudáveis pareados por sexo, escolaridade e idade com pacientes com diagnóstico de doença vascular subcortical que sofreram derrame classificados em três grupos: 1) lesões vasculares sem déficit; 2) comprometimento cognitivo vascular sem demência (CCVSD); 3) demência vascular (DV). RESULTADOS E DISCUSSÃO: O desempenho em testes neuropsicológicos diferiu entre os grupos, sendo o desempenho tanto pior quanto maior o comprometimento. O grupo DV provável demonstrou desempenho prejudicado na memória, velocidade de processamento e produção verbal, enquanto o grupo CCVSD apresentou déficit de atenção. CONCLUSÃO: Prejuízos nas funções executivas e dificuldades em AVDs permitem diferenciar os níveis de comprometimento nos grupos de doença vascular subcortical.Federal University of São PauloUNIFESPSciEL

Recalling feature bindings differentiates Alzheimer’s disease from Frontotemporal Dementia

It has been challenging to identify clinical cognitive markers that can differentiate patients with Alzheimer’s disease (AD) from those with behavioral variant frontotemporal dementia (bvFTD). The Short-term Memory Binding (STMB) test assesses the ability to integrate colors and shapes into unified representations and to hold them temporarily during online performance. The objective of this study is to investigate whether free recall deficits during short-term memory binding (STMB) test can differentiate patients with AD from those with bvFTD and controls. Participants were 32 cognitively intact adults, 35 individuals with AD and 18 with bvFTD. All patients were in the mild dementia stage. Receiver-operating characteristics (ROC) analyses were used to examine the diagnostic accuracy of the STMB. The results showed that AD patients performed significantly worse than controls and bvFTD patients in the STMB test, while the latter groups showed equivalent performance. The bound condition of the STMB test showed an AUC of 0.853, with 84.4% of sensitivity and 80% of specificity to discriminate AD from controls and an AUC of 0.794, with 72.2% of sensitivity and 80% of specificity to differentiate AD from bvFTD. Binding deficits seem specific to AD. The free recall version of the STMB test can be used for clinical purposes and may aid in the differential diagnosis of AD. Findings support the view that the STMB may be a suitable cognitive marker for AD

Profiles of cognitive impairment in the continuum from normal cognition to Alzheimer's Clinical Syndrome:Contributions of the Short-term Memory Binding tests

Background: Short-term memory binding (STMB) tests assess conjunctive binding, in which participants should remember the integration of features, such as shapes (or objects) and colors, forming a unique representation in memory. In this study, we investigated two STMB paradigms: change detection (CD) and free recall (FR). Objective: To investigate the cognitive profile in the CD and FR tasks of three diagnostic groups: cognitively unimpaired (CU), mild cognitive impairment (MCI), and Alzheimer's clinical syndrome (ACS). In addition, we aimed to calculate and compare the accuracy of the CD and FR tasks to identify MCI and ACS. Methods: Participants were 24 CU, 24 MCI, and 37 ACS. The cognitive scores of the clinical groups were compared using analysis of variance (ANOVA) and receiver-operating characteristic (ROC) analyses were carried out to verify the accuracy of the STMB tasks. Results: In the CD task, CU was different from MCI and ACS (CU > MCI = ACS), while in the FR task all groups were different (CU > MCI > ACS). The ROC analyses showed an area under the curve (AUC) of 0.855 comparing CU with MCI for the CD task and 0.975 for the FR. The AUC comparing CU and ACS was 0.924 for the CD and 0.973 for the FR task. The FR task showed better accuracy to identify MCI patients, and the same accuracy to detect ACS. Conclusion: The present findings indicate that impairments in CD and FR of bound representations are features of the cognitive profiles of MCI and ACS patients

Perfil funcional de pacientes com demência frontotemporal variante comportamental (bvDFT) em comparação com pacientes com doença de Alzheimer e controles normais

There are few studies describing the functional changes in behavioral variant frontotemporal dementia (bvFTD) and it is not clear which aspects of functionality are affected by the disease. Objective: The aim of the present investigation was to characterize the functional profile of patients previously diagnosed with bvFTD. Methods: The sample consisted of 31 patients diagnosed with bvFTD, who were compared to patients with Alzheimer’s disease (AD) (n=31) and to healthy control subjects (NC) (n=34), matched for schooling and age. bvFTD and AD patients were matched by severity of dementia. The protocol included the Mini-Mental State Examination (MMSE), Geriatric Depression Scale (GDS), Direct Assessment of Functional Status (DAFS-BR), Functional Activities Questionnaire (PFAQ), Disability Assessment for Dementia (DAD) and the Clinical Dementia Rating scale (CDR). Results: The group with bvFTD showed worse performance on Initiation and Planning/Organization in the DAD and on ability to feed oneself in the DAFS-BR, as well as higher scores on the PFAQ, \ud suggesting greater dependence in the bvFTD group. Conclusion: The results suggest that individuals with bvFTD display greater functional impairment compared to AD patients with a similar degree of dementia severity and to healthy controls. Direct assessment of functionality proved unable to clearly differentiate between the dementia subtypes.Existem poucos estudos sobre alterações funcionais na variante comportamental da demência frontotemporal (DFTvc). Objetivo: Caracterizar o desempenho funcional de pacientes com diagnóstico prévio de DFTvc. Métodos: Trinta e um pacientes com DFTvc foram comparados a pacientes com doença de Alzheimer (DA) (n=31) e adultos saudáveis (NC) (n=34), pareados para idade e escolaridade. Os pacientes com DFTvc e DA foram pareados pela gravidade da demência. O protocolo incluiu o Mini Exame do Estado Mental, Escala de Depressão Geriátrica (GDS), Direct Assessment of Functional \ud Status (DAFS-BR), Disability Assessment for Dementia (DAD), Functional Activities Questionnaire (PFAQ) e Clinical Dementia Rating scale (CDR). Resultados: O grupo com DFTvc apresentou pior desempenho em Iniciação e Planejamento/Organização na DAD, em Alimentação na DAFS-BR e pontuação mais elevada na PFAQ, sugerindo que a dependência na DFTvc é mais acentuada. Conclusão: Os resultados apresentados sugerem que indivíduos com DFTvc apresentam maior prejuízo funcional, quando comparados com participantes com DA com grau semelhante de gravidade e com adultos saudáveis. A avaliação direta da funcionalidade não ajudou a diferenciar os subtipos de demência de modo significativo

Tradução, adaptação transcultural e aplicabilidade da escala de estadiamento e progressão da degeneração lobar frontotemporal

Background: Staging scales for dementia have been devised for grading Alzheimer’s disease (AD) but do not include the specific symptoms of frontotemporal lobar degeneration (FTLD). Objective: To translate and adapt the Frontotemporal Dementia Rating Scale (FTD-FRS) to Brazilian Portuguese. Methods: The cross-cultural adaptation \ud process consisted of the following steps: translation, back-translation (prepared by independent translators), discussion with specialists, and development of a final version after minor adjustments. A pilot application was carried out with 12 patients diagnosed with bvFTD and 11 with AD, matched for disease severity (CDR=1.0). The evaluation protocol included: Addenbrooke’s Cognitive Examination-Revised (ACE-R), Mini-Mental State Examination (MMSE), Executive Interview (EXIT-25), Neuropsychiatric Inventory (NPI), Frontotemporal Dementia Rating Scale (FTD-FRS) and Clinical Dementia Rating scale (CDR). Results: The Brazilian version of the FTD-FRS seemed appropriate for use in this country. Preliminary results revealed greater levels of disability in bvFTD than in AD patients (bvFTD: 25% mild, 50% moderate and 25% severe; AD: 36.36% mild, 63.64% moderate). It appears that the CDR underrates disease severity in bvFTD since a relevant proportion of patients rated as having mild dementia (CDR=1.0) in fact had moderate or severe levels of disability according to the FTD-FRS. Conclusion: The Brazilian version of the FTD-FRS seems suitable to aid staging and determining disease progression.Introdução: As escalas de estadiamento das demências, como a Clinical Dementia Rating (CDR), foram elaboradas para graduar a doença de Alzheimer (DA) e não incluem os sintomas específicos da degeneração lobar frontotemporal (DLFT). Objetivo: Realizar a tradução e adaptação cultural da Frontotemporal Dementia Rating Scale (FTD-FRS) para o contexto brasileiro e apresentar dados preliminares da sua aplicabilidade. Métodos: O processo de adaptação transcultural consistiu em: tradução, retrotradução (realizadas por tradutores independentes), discussão com especialistas sobre a versão em português e equivalência com a versão original, desenvolvimento da versão final com pequenos ajustes. Foi feita uma aplicação piloto em 12 pacientes com diagnóstico de demência frontotemporal variante comportamental (DFTvc) e 11 com DA, pareados quanto à gravidade da demência (CDR=1). O protocolo de avaliação incluiu a Addenbrooke’s Cognitive Examination-Revised (ACE-R), Mini Exame do Estado Mental (MEEM), Executive Interview (EXIT-25), Inventário Neuropsiquiátrico (INP) e a Escala de Avaliação Clínica da Demência (CDR). Resultados: A FTD-FRS na versão brasileira \ud pareceu apropriada. Resultados preliminares revelaram maiores níveis de incapacidade na DFTvc do que em pacientes com DA (DFTvc: 25% leve, 50% moderado, 25% grave; AD: 36.36% leve, 63.64% moderado). A CDR parece subestimar a gravidade da demência na DFTvc, uma vez que uma relevante proporção dos pacientes classificados com leves (CDR=1) de fato apresentaram nível moderado ou grave de comprometimento na FTD-FRS. Conclusão: A versão brasileira da FTD-FRS pode se mostrar adequada para auxiliar no estadiamento e determinar a progressão da DLFT

Vasculite cerebral e doença de Basedow-Graves: relato de dois casos

OBJETIVO: Relatar dois casos de pacientes com vasculite cerebral associada à doença de Basedow-Graves. RELATO DOS CASOS: O primeiro é uma paciente de 22 anos de idade com quadro súbito de disartria e déficit motor em dimídio esquerdo. Ao exame clínico, apresentava taquicardia, exoftalmia bilateral e bócio difuso. Referia tratamento para hipertiroidismo há um mês. O segundo é uma paciente de 15 anos de idade, que apresentou quadro súbito de perda da consciência seguindo-se distúrbio de linguagem e déficit motor em hemicorpo direito. RESULTADOS: Os exames de imagem revelaram áreas de lesão cerebral sugestivas de isquemia. Os estudos angiográficos cerebrais evidenciaram estenoses vasculares múltiplas compatíveis com arterite. Foram descartadas outras causas possíveis de vasculite cerebral. Os exames laboratoriais revelaram hipertiroidismo e presença dos anticorpos antimicrossomais e antitireoglobulina. As duas pacientes receberam tratamento para o hipertiroidismo. CONCLUSÃO: A associação entre arterite cerebral e doença de Basedow-Graves sugere que possa existir um elo na patogenia das duas doenças através de mecanismo auto-imune comum a ambas

Neuropsychological performance in patients with subcortical stroke Perfil neuropsicológico em pacientes com lesões vasculares subcorticais

Vascular cognitive impairment (VCI) is characterized by cognitive compromise predominantly of executive dysfunction. OBJECTIVES: To assess cognitive functions in VCI, focusing on executive functions, to observe functional losses in relation to activities of daily living (ADLs) and to detect early symptoms prior to the onset of dementia. METHODS: We evaluated healthy subjects matched for gender, education and age to patients with diagnosis of subcortical vascular disease who had a stroke classified into three groups: 1) vascular lesions and no impairment; 2) vascular cognitive impairment with no dementia (VCIND); 3) vascular dementia (VaD). RESULTS AND DISCUSSION: The performance on neuropsychological tests differed among groups, worsening with increased impairment level. The probable VaD group demonstrated impaired performance in memory, processing speed and verbal production, while the VCIND group showed attention deficits. CONCLUSION: Impairment in executive functions and difficulties in ADLs allow us to differentiate levels of impairment in groups of subcortical vascular disease.<br>O comprometimento cognitivo vascular (CCV) é caracterizado por comprometimento cognitivo predominantemente sob a forma de disfunção executiva. OBJETIVOS: Avaliar as funções cognitivas no CCV, enfocando as funções executivas, observar as perdas funcionais em relação às atividades cotidianas (AVDs) e detectar os primeiros sintomas antes do início da demência. MÉTODOS: Foram avaliados indivíduos controles saudáveis pareados por sexo, escolaridade e idade com pacientes com diagnóstico de doença vascular subcortical que sofreram derrame classificados em três grupos: 1) lesões vasculares sem déficit; 2) comprometimento cognitivo vascular sem demência (CCVSD); 3) demência vascular (DV). RESULTADOS E DISCUSSÃO: O desempenho em testes neuropsicológicos diferiu entre os grupos, sendo o desempenho tanto pior quanto maior o comprometimento. O grupo DV provável demonstrou desempenho prejudicado na memória, velocidade de processamento e produção verbal, enquanto o grupo CCVSD apresentou déficit de atenção. CONCLUSÃO: Prejuízos nas funções executivas e dificuldades em AVDs permitem diferenciar os níveis de comprometimento nos grupos de doença vascular subcortical

Neuropsychological performance in patients with subcortical stroke

Vascular cognitive impairment (VCI) is characterized by cognitive compromise predominantly of executive dysfunction. OBJECTIVES: To assess cognitive functions in VCI, focusing on executive functions, to observe functional losses in relation to activities of daily living (ADLs) and to detect early symptoms prior to the onset of dementia. METHODS: We evaluated healthy subjects matched for gender, education and age to patients with diagnosis of subcortical vascular disease who had a stroke classified into three groups: 1) vascular lesions and no impairment; 2) vascular cognitive impairment with no dementia (VCIND); 3) vascular dementia (VaD). RESULTS AND DISCUSSION: The performance on neuropsychological tests differed among groups, worsening with increased impairment level. The probable VaD group demonstrated impaired performance in memory, processing speed and verbal production, while the VCIND group showed attention deficits. CONCLUSION: Impairment in executive functions and difficulties in ADLs allow us to differentiate levels of impairment in groups of subcortical vascular disease