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1.
Gerontologist ; 59(6): e743-e763, 2019 11 16.
Article in English | MEDLINE | ID: mdl-30517634

ABSTRACT

BACKGROUND AND OBJECTIVES: Cognitive disorders may be an early sign of neuropsychiatric disorders; however, it remains unclear whether the screening measures are interchangeable. The aim of this study was to contrast the most commonly used screening tools-Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA)-for early detection of neurocognitive disorder (NCD). RESEARCH DESIGN AND METHODS: This study presents a descriptive systematic review and informative literature according to the Cochrane Foundation's guidelines. The keywords "Mini-Mental State Examination" and "Montreal Cognitive Assessment" were searched in the Web of Science, SciELO, and LILACS databases. RESULTS: Fifty-one studies were selected including a total sample of 11,870 participants (8,360 clinical patients and 3,510 healthy controls). Most studies were published in the past 5 years using a cross-sectional design, carried out across the world. They were organized by age ranges (18-69 years and 20-89 years), years of schooling, and mental status (with and without mental and behavior disorders). Sixteen of 18 studies had participants aged 18-69 years, and 21 out of 33 studies within the older set suggested that the MoCA is a more sensitive tool for detecting NCD. DISCUSSION AND IMPLICATIONS: Thirty-seven studies suggested that the MoCA is a more sensitive tool for NCD detection because it assesses executive function and visuospatial abilities. Some individuals who demonstrated normal cognitive function on the MMSE had lower performance on the MoCA. However, it seems necessary to establish different cutoffs based on years of schooling to avoid false positives. Future studies should contrast MoCA with other screening tools designed for NCD assessment.


Subject(s)
Cognition Disorders/diagnosis , Mental Status and Dementia Tests , Cognition Disorders/psychology , Humans
2.
J Alzheimers Dis ; 55(3): 1131-1139, 2017.
Article in English | MEDLINE | ID: mdl-27767993

ABSTRACT

BACKGROUND: Souvenaid® (uridine monophosphate, docosahexaenoic acid, eicosapentaenoic acid, choline, phospholipids, folic acid, vitamins B12, B6, C, and E, and selenium), was developed to support the formation and function of neuronal membranes. OBJECTIVE: To determine effect sizes observed in clinical trials of Souvenaid and to calculate the number needed to treat to show benefit or harm. METHODS: Data from all three reported randomized controlled trials of Souvenaid in Alzheimer's disease (AD) dementia (Souvenir I, Souvenir II, and S-Connect) and an open-label extension study were included in analyses of effect size for cognitive, functional, and behavioral outcomes. Effect size was determined by calculating Cohen's d statistic (or Cramér's V method for nominal data), number needed to treat and number needed to harm. Statistical calculations were performed for the intent-to-treat populations. RESULTS: In patients with mild AD, effect sizes were 0.21 (95% confidence intervals: -0.06, 0.49) for the primary outcome in Souvenir II (neuropsychological test battery memory z-score) and 0.20 (0.10, 0.34) for the co-primary outcome of Souvenir I (Wechsler memory scale delayed recall). No effect was shown on cognition in patients with mild-to-moderate AD (S-Connect). The number needed to treat (6 and 21 for Souvenir I and II, respectively) and high number needed to harm values indicate a favorable harm:benefit ratio for Souvenaid versus control in patients with mild AD. CONCLUSIONS: The favorable safety profile and impact on outcome measures converge to corroborate the putative mode of action and demonstrate that Souvenaid can achieve clinically detectable effects in patients with early AD.


Subject(s)
Alzheimer Disease/diet therapy , Functional Food , Treatment Outcome , Activities of Daily Living , Aged , Aged, 80 and over , Alzheimer Disease/physiopathology , Antipsychotic Agents/administration & dosage , Docosahexaenoic Acids , Eicosapentaenoic Acid , Female , Follow-Up Studies , Humans , Male , Middle Aged , Outcome Assessment, Health Care , Psychiatric Status Rating Scales , Regression Analysis , Selenium , Vitamins
3.
Alzheimer Dis Assoc Disord ; 30(3): 243-50, 2016.
Article in English | MEDLINE | ID: mdl-26523709

ABSTRACT

Little is known on how risk factors for Alzheimer disease (AD) dementia affect disease progression, much less for populations with low mean schooling, whereas the transcription of APOE may be regulated by nongenetic factors. In this 44-month cohort study, 214 consecutive outpatients with late-onset AD were assessed for rates of cognitive and functional decline by way of Clinical Dementia Rating and Mini-Mental State Examination (MMSE) scores, keeping blinded assessment of APOE haplotypes. Subjects were evaluated for sex, schooling, age of dementia onset, and cerebrovascular risk factors (including Framingham risk scores). Of the 214 patients, there were 146 (68.2%) women and 113 (52.8%) APOE4+ carriers. The mean age of AD onset was 73.4±6.5 years-old, negatively correlated with time to Clinical Dementia Rating >1.0 (ß=-0.132; ρ<0.001), MMSE=20 (ß=-0.105; ρ<0.001), and MMSE=15 (ß=-0.124; ρ=0.003), more significantly for women and APOE4+ carriers. Mean schooling was 4.18±3.7 years, correlated with time to MMSE=20 and MMSE=15 for women and APOE4+ carriers. Body mass index was correlated with time to MMSE=20 only for men (ρ=0.006). The 10-year coronary heart disease risk was correlated with time to MMSE=20 only for APOE4+ carriers (ρ=0.015). These outcomes suggest interactions among genomic effects of cognitive reserve, cerebral perfusion, and hormonal changes over mechanisms of neurodegeneration.


Subject(s)
Activities of Daily Living/psychology , Alzheimer Disease/psychology , Cognitive Dysfunction/physiopathology , Disease Progression , Age Factors , Age of Onset , Aged , Aging , Alzheimer Disease/diagnostic imaging , Apolipoproteins E/genetics , Brazil , Cohort Studies , Female , Genotype , Humans , Male , Neuropsychological Tests/statistics & numerical data , Risk Factors
4.
Neurologist ; 20(2): 35-41, 2015 Aug.
Article in English | MEDLINE | ID: mdl-26280289

ABSTRACT

INTRODUCTION: Neuropsychiatric and epidemiological patterns may compensate for insufficient specificity of diagnostic criteria of Lewy body dementia (LBD) syndromes in differential analysis with Alzheimer disease (AD) dementia. We aimed to compare and distinguish demographic and neuropsychiatric features between LBD and APOE-ε3/ε3 late-onset AD. METHODS: A total of 39 consecutive patients with Parkinson disease dementia or dementia with Lewy bodies were matched with 39 APOE-ε3/ε3 patients with late-onset AD according to sex and Mini-Mental State Examination scores, and evaluated for education, age at disease onset, lifetime sanitary conditions, anthropometric measures, alcohol use, smoking, history of head trauma or bacterial infections, family history of neurodegenerative diseases, caregiver burden, functional independence, cognitive decline, neuropsychiatric symptoms, and pharmacological treatment. RESULTS: Family history of parkinsonism and worse motor performance were more prevalent in Parkinson disease dementia, also impacting sleep satisfaction and physical self-maintenance. Patients with AD had higher systolic blood pressure, were more independent, and had better performance in visuospatial tasks and calculations, whereas patients with LBD were more oriented and previously lived longer in rural areas without sanitation. Among neuropsychiatric symptoms, hallucinations, apathy, dysphoria, anxiety, and aberrant motor behavior were the most significant for discrimination amidst dementia diagnoses. CONCLUSIONS: Functional performance, visuospatial skills, and behavioral symptoms are helpful for differential diagnoses between LBD and AD. Cerebrovascular risk might be more important for AD pathogenesis, whereas environmental factors might impact development of LBD.


Subject(s)
Alzheimer Disease/complications , Alzheimer Disease/genetics , Apolipoproteins E/genetics , Behavioral Symptoms/etiology , Hallucinations/etiology , Lewy Body Disease/complications , Aged , Aged, 80 and over , Case-Control Studies , Diagnosis, Differential , Female , Genotype , Humans , Male , Middle Aged , Psychiatric Status Rating Scales
5.
Arq Neuropsiquiatr ; 72(11): 845-50, 2014 Nov.
Article in English | MEDLINE | ID: mdl-25410450

ABSTRACT

OBJECTIVE: Besides significant cognitive decline, patients in later stages of Alzheimer's disease (AD) also present global functional impairment, usually reported by their caregivers. This study searched for preserved activities of daily living by investigating correlations among specific instruments for severe dementia with a performance-based functional scale. METHOD: A sample of 95 moderate to severe AD patients and their caregivers underwent a neuropsychological battery consisting of screening tools, the Functional Assessment Staging Test (FAST), the Severe Mini-Mental State Examination (MMSEsev) and a performance-based ecological scale, the Performance Test of Activities of Daily Living (PADL). RESULTS: Consistent findings emerged from the comparisons among tests. PADL showed significant statistical correlation with MMSEsev (ρ<0.001), according to FAST subdivisions. CONCLUSION: Upon suspicion of unreliable caregiver reports, ecological scales may be useful for disease staging. Variable degrees of functionality and cognition may be present even in later stages of AD, requiring proper assessment.


Subject(s)
Activities of Daily Living/psychology , Alzheimer Disease/physiopathology , Cognition/physiology , Aged , Aged, 80 and over , Analysis of Variance , Caregivers , Dementia/physiopathology , Female , Humans , Male , Neuropsychological Tests , Psychiatric Status Rating Scales , Reference Values , Severity of Illness Index , Surveys and Questionnaires , Task Performance and Analysis
6.
Arq. neuropsiquiatr ; 72(11): 845-850, 11/2014. tab, graf
Article in English | LILACS | ID: lil-728685

ABSTRACT

Objective Besides significant cognitive decline, patients in later stages of Alzheimer's disease (AD) also present global functional impairment, usually reported by their caregivers. This study searched for preserved activities of daily living by investigating correlations among specific instruments for severe dementia with a performance-based functional scale. Method A sample of 95 moderate to severe AD patients and their caregivers underwent a neuropsychological battery consisting of screening tools, the Functional Assessment Staging Test (FAST), the Severe Mini-Mental State Examination (MMSEsev) and a performance-based ecological scale, the Performance Test of Activities of Daily Living (PADL). Results Consistent findings emerged from the comparisons among tests. PADL showed significant statistical correlation with MMSEsev (ρ<0.001), according to FAST subdivisions. Conclusion Upon suspicion of unreliable caregiver reports, ecological scales may be useful for disease staging. Variable degrees of functionality and cognition may be present even in later stages of AD, requiring proper assessment. .


Objetivo Além do significativo declínio cognitivo, pacientes em estágios avançados da doença de Alzheimer (DA) também apresentam prejuízo funcional global. Este estudo investigou atividades de vida diária correlacionando teste específico para a demência grave, com escala funcional baseada no desempenho. Método 95 pacientes com DA foram submetidos a uma bateria neuropsicológica composta por instrumentos de rastreio, a escala Functional Assessment Staging Test (FAST), o Mini-exame do Estado Mental grave (MEEMg) e escala ecológica baseada no desempenho: a Performance Test of Activities of Daily Living (PADL). Resultados Achados consistentes emergiram da comparação entre os instrumentos. De acordo com as subdivisões da escala FAST, a PADL apresentou significativa correlação estatística com o MEEMg (ρ<0.001). Conclusão Na suspeita de relato pouco confiável por parte do cuidador, escalas ecológicas podem ser úteis no estadiamento da doença. Igualmente à cognição, variados graus de funcionalidade estão presentes mesmo em fases avançadas da DA, exigindo avaliação adequada. .


Subject(s)
Aged , Aged, 80 and over , Female , Humans , Male , Activities of Daily Living/psychology , Alzheimer Disease/physiopathology , Cognition/physiology , Analysis of Variance , Caregivers , Dementia/physiopathology , Neuropsychological Tests , Psychiatric Status Rating Scales , Reference Values , Severity of Illness Index , Surveys and Questionnaires , Task Performance and Analysis
8.
Clinics ; 68(2): 277-280, 2013.
Article in English | LILACS | ID: lil-668817

ABSTRACT

In this study, we investigated the associations between single-nucleotide polymorphisms in GAB2 (rs2373115), GSK3B (rs6438552) and SORL1 (rs641120) and Alzheimer's disease (AD), both alone and in combination with the APOE*4 allele.


Subject(s)
Aged , Female , Humans , Male , Adaptor Proteins, Signal Transducing/genetics , Alzheimer Disease/genetics , /genetics , Cytoskeletal Proteins/genetics , LDL-Receptor Related Proteins/genetics , Membrane Transport Proteins/genetics , Nuclear Proteins/genetics , Polymorphism, Single Nucleotide/genetics , Age of Onset , Risk Factors
9.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 33(4): 338-346, Dec. 2011. tab
Article in English | LILACS | ID: lil-609096

ABSTRACT

OBJECTIVE: Ecological tests are useful in assessing executive function deficits and may be of value in appraising response to treatment in Alzheimer's disease patients. Our aims were to examine executive function using the Behavioral Assessment of the Dysexecutive Syndrome for a Brazilian sample of older-adult controls and probable early Alzheimer's disease patients, and verify the applicability of this test battery. METHOD: Forty-one older-adult controls were matched with mild Alzheimer's disease patients by age, education, and gender. RESULTS: There significant inter-group differences in overall profile and almost all subtests except temporal judgment, time spent on planning the first and second Zoo Map visit, number of errors when copying drawings, naming pictures and Six Modified Elements arithmetic, and dysexecutive questionnaire self-rating. The Behavioral Assessment of the Dysexecutive Syndrome item that best discriminated controls from patients was the Modified Six Elements - adapted (general index), with a sensitivity of 80 percent and specificity of 90 percent, (AUC = 0.91, p < 0.001). CONCLUSION: Behavioral Assessment of the Dysexecutive Syndrome was effective in detecting executive function deficits in mild Alzheimer's disease patients, particularly the task switching, time monitoring, and rule-shift subtests.


OBJETIVO: Testes ecológicos são os mais indicados para a avaliação dos déficits nas funções executivas, sendo importante também na avaliação da resposta ao tratamento de pacientes com doença de Alzheimer. O objetivo deste estudo é verificar o desempenho nas funções executivas usando a Behavioural Assessment of the Dysexecutive Syndrome em uma amostra brasileira de idosos controles e pacientes com doença de Alzheimer provável em fase inicial e a aplicabilidade desta bateria ecológica em nosso meio. MÉTODO: Avaliamos com a Behavioural Assessment of the Dysexecutive Syndrome 41 idosos controles e 41 pacientes com doença de Alzheimer provável em fase inicial, sem diferença estatisticamente significativa em relação à idade, escolaridade e sexo. RESULTADOS: Houve diferença estatisticamente significativa entre os grupos no escore total e em quase todos os subtestes da Behavioural Assessment of the Dysexecutive Syndrome, não ocorrendo o mesmo no subteste de Julgamento Temporal, no tempo gasto no planejamento da primeira e segunda visita no Mapa do Zoológico, no número de erros ao copiar os desenhos, na nomeação de figuras e na aritmética do Seis Elementos Modificado e no questionário disexecutivo autoavaliação. CONCLUSÃO: A Behavioural Assessment of the Dysexecutive Syndrome mostrou-se eficaz na detecção dos déficits em funções executivas em pacientes com doença de Alzheimer provável em fase inicial, particularmente em tarefas de alternância, monitoramento de tempo e subtestes de mudanças de regras.


Subject(s)
Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Alzheimer Disease/complications , Cognition Disorders/diagnosis , Executive Function , Neuropsychological Tests , Age Factors , Brazil , Cognition Disorders/etiology , Control Groups , Educational Status , Surveys and Questionnaires , Reproducibility of Results , Sensitivity and Specificity , Sex Factors
10.
Nutr J ; 10: 98, 2011 Sep 26.
Article in English | MEDLINE | ID: mdl-21943331

ABSTRACT

BACKGROUND: Weight loss in patients with Alzheimer's disease (AD) is a common clinical manifestation that may have clinical significance. OBJECTIVES: To evaluate if there is a difference between nutrition education and oral nutritional supplementation on nutritional status in patients with AD. METHODS: A randomized, prospective 6-month study which enrolled 90 subjects with probable AD aged 65 years or older divided into 3 groups: Control Group (CG) [n = 27], Education Group (EG) [n = 25], which participated in an education program and Supplementation Group (SG) [n = 26], which received two daily servings of oral nutritional supplementation. Subjects were assessed for anthropometric data (weight, height, BMI, TSF, AC and AMC), biochemical data (total protein, albumin, and total lymphocyte count), CDR (Clinical Dementia Rating), MMSE (Mini-mental state examination), as well as dependence during meals. RESULTS: The SG showed a significant improvement in the following anthropometric measurements: weight (H calc = 22.12, p =< 0.001), BMI (H calc = 22.12, p =< 0.001), AC (H calc = 12.99, p =< 0.002), and AMC (H calc = 8.67, p =< 0.013) compared to the CG and EG. BMI of the EG was significantly greater compared to the CG. There were significant changes in total protein (H calc = 6.17, p =< 0.046), and total lymphocyte count in the SG compared to the other groups (H cal = 7.94, p = 0.019). CONCLUSION: Oral nutritional supplementation is more effective compared to nutrition education in improving nutritional status.


Subject(s)
Alzheimer Disease/complications , Dietary Supplements , Health Education , Nutritional Status , Aged , Alzheimer Disease/diet therapy , Dementia , Female , Humans , Male , Nutrition Therapy , Prospective Studies , Weight Loss
11.
Braz J Psychiatry ; 33(4): 338-46, 2011 Dec.
Article in English | MEDLINE | ID: mdl-21584345

ABSTRACT

OBJECTIVE: Ecological tests are useful in assessing executive function deficits and may be of value in appraising response to treatment in Alzheimer's disease patients. Our aims were to examine executive function using the Behavioral Assessment of the Dysexecutive Syndrome for a Brazilian sample of older-adult controls and probable early Alzheimer's disease patients, and verify the applicability of this test battery. METHOD: Forty-one older-adult controls were matched with mild Alzheimer's disease patients by age, education, and gender. RESULTS: There significant inter-group differences in overall profile and almost all subtests except temporal judgment, time spent on planning the first and second Zoo Map visit, number of errors when copying drawings, naming pictures and Six Modified Elements arithmetic, and dysexecutive questionnaire self-rating. The Behavioral Assessment of the Dysexecutive Syndrome item that best discriminated controls from patients was the Modified Six Elements - adapted (general index), with a sensitivity of 80% and specificity of 90%, (AUC = 0.91, p < 0.001). CONCLUSION: Behavioral Assessment of the Dysexecutive Syndrome was effective in detecting executive function deficits in mild Alzheimer's disease patients, particularly the task switching, time monitoring, and rule-shift subtests.


Subject(s)
Alzheimer Disease/complications , Cognition Disorders/diagnosis , Executive Function , Neuropsychological Tests , Age Factors , Aged , Aged, 80 and over , Brazil , Cognition Disorders/etiology , Control Groups , Educational Status , Female , Humans , Male , Middle Aged , Reproducibility of Results , Sensitivity and Specificity , Sex Factors , Surveys and Questionnaires
12.
Barueri; Manole; 2011. 1140 p. tab, ilus.(Guias de medicina ambulatorial e hospitalar).
Monography in Portuguese | LILACS | ID: lil-573536
13.
Arq Neuropsiquiatr ; 66(2B): 312-7, 2008 Jun.
Article in English | MEDLINE | ID: mdl-18641862

ABSTRACT

INTRODUCTION: Semantic relations among words and repetition enhance free recall, but it is unknown if these facilitating factors are effective in dementia. METHOD: Alzheimer's patients (MILD-Alz, MOD-Alz) were compared to healthy elderly. Fifteen-word lists were read out to the subjects. In four sets of lists the words in intermediary input positions were semantically related or not, or the midlist words were repeated, or they were repeated and semantically related. RESULTS: The usual third peak of recall of semantically related words was not observed in MOD-Alz, repetition of words did not increase recall of the patients, and the combination of relatedness and repetition benefited only MID-Alz. In a second experiment, with related or unrelated midlist words, and list length shortened from 15 to 9 words, semantic facilitation was observed in mild and moderate Alzheimer s patients, although diminished compared to controls. CONCLUSION: Progression of dementia turns facilitating factors of recall less effective.


Subject(s)
Alzheimer Disease/psychology , Language Disorders/psychology , Mental Recall/physiology , Semantics , Verbal Learning/physiology , Aged , Alzheimer Disease/physiopathology , Analysis of Variance , Case-Control Studies , Educational Status , Humans , Language Disorders/physiopathology , Neuropsychological Tests , Paired-Associate Learning/physiology , Serial Learning/physiology
14.
Arq. neuropsiquiatr ; 66(2b): 312-317, jun. 2008. ilus, tab
Article in English | LILACS | ID: lil-486181

ABSTRACT

INTRODUCTION: Semantic relations among words and repetition enhance free recall, but it is unknown if these facilitating factors are effective in dementia. METHOD: Alzheimer's patients (MILD-Alz, MOD-Alz) were compared to healthy elderly. Fifteen-word lists were read out to the subjects. In four sets of lists the words in intermediary input positions were semantically related or not, or the midlist words were repeated, or they were repeated and semantically related. RESULTS: The usual third peak of recall of semantically related words was not observed in MOD-Alz, repetition of words did not increase recall of the patients, and the combination of relatedness and repetition benefited only MID-Alz. In a second experiment, with related or unrelated midlist words, and list length shortened from 15 to 9 words, semantic facilitation was observed in mild and moderate Alzheimer´s patients, although diminished compared to controls. CONCLUSION: Progression of dementia turns facilitating factors of recall less effective.


INTRODUÇÃO: Relacionamento semântico e repetição facilitam a recordação livre mas não se sabe se esses fatores continuam efetivos na demência. MÉTODO: O desempenho de pacientes com doença de Alzheimer (MILD-Alz e MOD-Alz) foi comparado com o de idosos sadios na recordação livre de listas de 15 palavras, utilizando quatro diferentes conjuntos de listas que continham ou não palavras relacionadas nas posições intermediárias, palavras repetidas, ou ainda palavras repetidas e semanticamente relacionadas. RESULTADOS: O terceiro pico usual na recordação das palavras semanticamente relacionadas não foi observado em MOD-Alz; a repetição não aumentou a recordação dos pacientes; a combinação de relacionamento e repetição beneficiou apenas MILD-Alz. Em outro experimento, com palavras intermediárias relacionadas ou não, e em que a extensão das listas foi reduzida para 9 palavras, observou-se facilitação semântica em MILD-Alz e MOD-Alz. CONCLUSÃO: A progressão da demência diminui a eficácia de fatores facilitadores da recordação.


Subject(s)
Aged , Humans , Alzheimer Disease/psychology , Language Disorders/psychology , Mental Recall/physiology , Semantics , Verbal Learning/physiology , Analysis of Variance , Alzheimer Disease/physiopathology , Case-Control Studies , Educational Status , Language Disorders/physiopathology , Neuropsychological Tests , Paired-Associate Learning/physiology , Serial Learning/physiology
15.
Alzheimer Dis Assoc Disord ; 22(1): 72-8, 2008.
Article in English | MEDLINE | ID: mdl-18317250

ABSTRACT

NEUROPSI is a brief neuropsychologic battery developed to briefly assess a wide spectrum of cognitive functions. The aim of this study was to examine the applicability of a Portuguese version of this battery and verify the efficacy in detecting cognitive impairment in Alzheimer disease (AD) patients. NEUROPSI was applied to 75 elderly people, 25 patients with probable AD in mild stage (AD1), 25 patients in moderate stage (AD2), and 25 healthy elderly persons (control group), matched with the AD patients for age and schooling. Before testing all participants were applied the Mini-Mental State Examination. Results showed significant differences in total scores of the tests; NEUROPSI (P<0.001) and Mini-Mental State Examination (P<0.001), and the control group scored highest in both of the tests followed by groups AD1 and AD2. Differences were also found between the initial phase and the moderate phase. Results indicate that NEUROPSI is an efficient instrument for detecting AD patients in the initial stage of the disease.


Subject(s)
Alzheimer Disease/diagnosis , Neuropsychological Tests , Psychiatric Status Rating Scales , Aged , Female , Humans , Male , Portugal , Sensitivity and Specificity
16.
Arq Neuropsiquiatr ; 65(2A): 262-7, 2007 Jun.
Article in English | MEDLINE | ID: mdl-17607425

ABSTRACT

Neuropsychological studies have consistently reported cognitive dysfunctions associated with multiple sclerosis. One-hundred fifteen subjects with relapsing-remitting multiple sclerosis (RRMS) were compared with forty health controls according to a neuropsychological test battery, which included digit span, trail making, cancellation and stroop test. Both groups were matched for age, sex and educational level. Subjects with RRMS had a worse performance the speed of response. Subjects with RRMS spent more time to complete the test in either sections A (p=0.001) or B (p=0.001), although there was no significant difference in terms of number of errors. The total time required to finish the Stroop test was higher for subjects with RRMS (p<0.001), being the time difference between groups significant at trial 4 (p<0.001). Attention impairment in subjects with RRMS is related to slowed central processing, which may be affected in all stages, including impairment of automatic and controlled processing of information and in the motor program.


Subject(s)
Attention , Cognition Disorders/psychology , Disability Evaluation , Memory/physiology , Multiple Sclerosis, Relapsing-Remitting/psychology , Neuropsychological Tests/standards , Adolescent , Adult , Attention Deficit Disorder with Hyperactivity/diagnosis , Attention Deficit Disorder with Hyperactivity/etiology , Attention Deficit Disorder with Hyperactivity/psychology , Case-Control Studies , Cognition Disorders/diagnosis , Cognition Disorders/etiology , Diagnosis, Computer-Assisted , Educational Status , Female , Humans , Male , Middle Aged , Multiple Sclerosis, Relapsing-Remitting/complications , Pattern Recognition, Visual , Psychological Tests , Statistics, Nonparametric
17.
Arq. neuropsiquiatr ; 65(2A): 262-267, jun. 2007. tab
Article in English | LILACS | ID: lil-453923

ABSTRACT

Neuropsychological studies have consistently reported cognitive dysfunctions associated with multiple sclerosis. One-hundred fifteen subjects with relapsing-remitting multiple sclerosis (RRMS) were compared with forty health controls according to a neuropsychological test battery, which included digit span, trail making, cancellation and stroop test. Both groups were matched for age, sex and educational level. Subjects with RRMS had a worse performance the speed of response. Subjects with RRMS spent more time to complete the test in either sections A (p=0.001) or B (p=0.001), although there was no significant difference in terms of number of errors. The total time required to finish the Stroop test was higher for subjects with RRMS (p<0.001), being the time difference between groups significant at trial 4 (p<0.001). Attention impairment in subjects with RRMS is related to slowed central processing, which may be affected in all stages, including impairment of automatic and controlled processing of information and in the motor program.


Estudos neuropsicológicos demonstram alterações cognitivas associadas à esclerose múltipla. Foram avaliados, através de uma bateria neuropsicológica, 115 pacientes com esclerose múltipla remitente-recorrente (EMRR), comparada a um grupo controle com 40 indivíduos saudáveis. A bateria inclui os testes, span de dígitos, trilhas, teste de cancelamento e stroop. Os grupos foram pareados por sexo, idade e escolaridade.Os pacientes com EMRR tiveram um pior desempenho na rapidez de resposta (p=0,001), os pacientes gastaram um tempo maior para realizar o trilhas A (p=0,001) e o trilhas B (p=0,0001), não havendo diferenças significativas no número de erros. O tempo total no teste stroop foi maior dos sujeitos EMRR (p<0,001), apresentando diferença significativa na tentativa 4 (p<0,001). Os pacientes EMRR apresentaram lentificação do processamento central, podendo estar prejudicado em todos os estágios da doença, incluindo prejuízo do processamento de informações automático e controlado.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Middle Aged , Attention , Cognition Disorders/psychology , Disability Evaluation , Memory/physiology , Multiple Sclerosis, Relapsing-Remitting/psychology , Neuropsychological Tests/standards , Attention Deficit Disorder with Hyperactivity/diagnosis , Attention Deficit Disorder with Hyperactivity/etiology , Attention Deficit Disorder with Hyperactivity/psychology , Case-Control Studies , Cognition Disorders/diagnosis , Cognition Disorders/etiology , Diagnosis, Computer-Assisted , Educational Status , Multiple Sclerosis, Relapsing-Remitting/complications , Pattern Recognition, Visual , Psychological Tests , Statistics, Nonparametric
18.
Clin Invest Med ; 27(2): 101-6, 2004 Apr.
Article in English | MEDLINE | ID: mdl-15202829

ABSTRACT

PURPOSE: To present a case of permanent global amnesia related to hippocampal damage. Permanent global amnesia is a very rare condition of unknown etiology; lesions restricted to the hippocampus are uncommon, which hinders investigations of this pattern of memory loss. This case is unusually well documented, as the patient underwent extensive neuropsychological evaluations. CLINICAL FEATURES: A cheerful right-handed, 83-year-old retired electrician was first evaluated in 1990 for progressive difficulty in learning new information and in recalling events over the preceding 3-4 years. Tests over the next 5 years showed that the impairment was confined to episodic declarative memory. New verbal information could be stored only in episodic memory in a restricted manner, limited by short-term memory capacity. A relatively mild retrograde amnesia was detected. Semantic and implicit memory was spared, as were other functions evaluated. The patient's language and executive function were strikingly efficient. Magnetic resonance imaging of the brain showed bilateral atrophy of the hippocampi and amygdalae, ruling out conditions such as tumour growth. A diagnosis of permanent global amnesia was made. In the ensuing years, the retrograde amnesia worsened, but no new deficits were identified. CONCLUSION: This case, the first with a detailed cognitive examination, is evidence of a relatively pure hippocampal pattern for memory loss in permanent global amnesia.


Subject(s)
Amnesia/physiopathology , Aged , Aged, 80 and over , Amnesia/diagnosis , Hippocampus/pathology , Hippocampus/physiopathology , Humans , Magnetic Resonance Imaging , Male , Mental Recall , Neuropsychological Tests
19.
J Alzheimers Dis ; 6(6): 591-4; discussion 673-81, 2004 Dec.
Article in English | MEDLINE | ID: mdl-15665399

ABSTRACT

Alzheimer disease (AD) is the most common neurodegenerative disorder in the elderly and is also considered a progeroid genetic syndrome. The etiology of AD is complex and the mechanisms underlying its pathophysiology remains to be clarified. Werner syndrome (WS) is a rare autosomal recessive disorder characterized as a segmental progeroid syndrome. The gene (WRN) was recently identified. Its product acts as a DNA helicase and exonuclease. This study investigates the association of AD with the WRN 1367 polymorphisms in samples of 67 DA patients, 56 elderly healthy and 66 young healthy controls. DNA was isolated from blood cells, amplified by PCR and digested with PmaCI. We observed that the genotype distributions of WRN 1367 variants were within Hardy-Weinberg equilibrium in all subject samples. Furthermore, chi-square test comparison for genotype distributions and allele frequencies did not reveal any significant difference among the three groups of subjects (P>0.05). These results support the idea that these variants are not involved as a risk factor for developing AD.


Subject(s)
Alzheimer Disease/genetics , DNA Helicases/genetics , Aged , Aged, 80 and over , Alzheimer Disease/epidemiology , Alzheimer Disease/physiopathology , Chi-Square Distribution , Chromosome Aberrations , Deoxyribonucleases, Type II Site-Specific , Electrophoresis, Agar Gel , Exodeoxyribonucleases , Gene Frequency , Genes, Recessive/genetics , Genetic Variation , Genotype , Humans , Middle Aged , Polymerase Chain Reaction/methods , Polymorphism, Genetic , RecQ Helicases , Risk Factors , Werner Syndrome Helicase
20.
Arq Neuropsiquiatr ; 61(3B): 777-81, 2003 Sep.
Article in Portuguese | MEDLINE | ID: mdl-14595482

ABSTRACT

UNLABELLED: Mini-metal state examination (MMSE) is a screening test to detect cognitive impairment. The objectives of the present study are to describe some adaptations for use of MMSE in Brazil and to propose rules for its uniform application. METHOD: We evaluated 433 healthy subjects using the MMSE and verified the possible influence of demographic variables on total scores. RESULTS: Educational level was the main factor that influenced performance, demonstrated by ANOVA: F(4,425) = 100.45, p<0.0001. The median values for educational groups were: 20 for illiterates; 25 for 1 to 4 yrs; 26.5 for 5 to 8 yrs; 28 for 9 to 11 yrs and 29 for higher levels. CONCLUSION: The MMSE is an excellent screening instrument and definitive rules are necessary for comparison purposes.


Subject(s)
Brief Psychiatric Rating Scale/standards , Mass Screening , Mental Disorders/diagnosis , Adolescent , Adult , Age Distribution , Age Factors , Aged , Aged, 80 and over , Analysis of Variance , Educational Status , Female , Humans , Male , Middle Aged
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