Effects of Oral Vitamin C Supplementation on Anxiety in Students: A Double-Blind, Randomized, Placebo-Controlled Trial.

Vitamin C ascorbic acid) is a well-known antioxidant that is involved in anxiety, stress, depression, fatigue and mood state in humans. Studies have suggested that oxidative stress may trigger neuropsychological disorders. Antioxidants may play an important therapeutic role in combating the damage caused by oxidative stress in individuals that suffer from anxiety. In this context, it was hypothesized that oral vitamin C supplementation would reduce anxiety. However, few up to date studies have evaluated the consequences of oral vitamin C supplementation on anxiety in humans. The present study examined the effects of oral vitamin C supplements in 42 high school students, in a randomized, double-blind, placebo-controlled trial. The students were given either vitamin C (500 mg day(-1)) or placebo. Plasma concentrations of vitamin C and blood pressure were measured before the intervention and then one day after the intervention. Anxiety levels were evaluated for each student before and after 14 days following supplementation with the Beck Anxiety Inventory. Results showed that vitamin C reduced anxiety levels and led to higher plasma vitamin C concentration compared to the placebo. The mean heart rates were also significantly different between vitamin C group and placebo control group. Present study results not only provide evidence that vitamin C plays an important therapeutic role for anxiety but also point a possible use for antioxidants in the prevention or reduction of anxiety. This suggests that a diet rich in vitamin C may be an effective adjunct to medical and psychological treatment of anxiety and improve academic performance.

Análise neuropsicológica de distúrbios cognitivos em pacientes com fibromialgia, artrite reumatoide e lúpus eritematoso sistêmico / Neuropsychological assessment of cognitive disorders in patients with fibromyalgia, rheumatoid arthritis, and systemic lupus erythematosus

INTRODUÇÃO: O presente estudo é uma análise da possível existência de distúrbios cognitivos associados a fibromialgia (FM), artrite reumatoide (AR) e lúpus eritematoso sistêmico (LES), e da influência das variáveis idade, escolaridade e sintomas psiquiátricos sobre esses distúrbios. MATERIAIS E MÉTODOS: Foram utilizados como amostra três grupos de pacientes, compostos por 13 indivíduos com FM, 13 com AR e 11 com LES, com idades entre 30 e 80 anos, encaminhados pelo Ambulatório de Reumatologia do Hospital Universitário de Brasília (HUB). O desempenho dos participantes da amostra nos testes neuropsicológicos de memória, linguagem, funções executivas e inventário neuropsiquiátrico foi analisado considerando-se os grupos conforme tipo de doença crônica, escolaridade e idade. Também foi realizada a comparação entre os pontos de corte de normalidade cognitiva em amostras populacionais com os desempenhos desses participantes. RESULTADOS: Os dados revelaram presença de distúrbios cognitivos associados às três patologias, porém com diferenças significativas entre os grupos. CONCLUSÃO: As variáveis estudadas (baixa escolaridade e idade elevada) revelaram-se associadas a diversos graus de declínio em diferentes funções cognitivas com os três grupos patológicos. Entretanto, os grupos FM e LES apresentaram médias de sintomas neuropsiquiátricos de ansiedade, irritabilidade e alucinações significativamente maiores que o grupo AR no inventário neuropsiquiátrico.

INTRODUCTION: This study assesses the possible existence of cognitive disorder associated with chronic diseases [fibromyalgia (FM), rheumatoid arthritis (RA) and lupus (SLE)], and the influence of the variables age, educational level and psychiatric symptoms on those disorders. MATERIALS AND METHODS: The patients were referred by the Rheumatology Outpatient Clinic of the Hospital Universitário de Brasília (HUB), with ages ranging from 30 to 80 years, and were divided into the following three groups: FM, 13 patients; RA, 13 patients; and SLE, 11 patients. Their performance in the neuropsychological tests of memory, language, executive functions and neuropsychiatric inventory was assessed considering their type of chronic disease, educational level and age. In addition, the cutoff points of cognitive normality of population samples were compared with the patients' performances. RESULTS: The cognitive disorders were shown to be associated with the three diseases studied, but with significant differences between them. CONCLUSION: The variables studied (low educational level and advanced age) were associated with various degrees of impairment in the different cognitive functions in the three pathological groups. However, FM and SLE groups showed significantly higher means of the neuropsychiatric symptoms of anxiety, irritability and hallucinations than the RA group in the neuropsychiatric inventory.

Neuropsychological assessment of cognitive disorders in patients with fibromyalgia, rheumatoid arthritis, and systemic lupus erythematosus.

INTRODUCTION: This study assesses the possible existence of cognitive disorder associated with chronic diseases [fibromyalgia (FM), rheumatoid arthritis (RA) and lupus (SLE)], and the influence of the variables age, educational level and psychiatric symptoms on those disorders. MATERIALS AND METHODS: The patients were referred by the Rheumatology Outpatient Clinic of the Hospital Universitário de Brasília (HUB), with ages ranging from 30 to 80 years, and were divided into the following three groups: FM, 13 patients; RA, 13 patients; and SLE, 11 patients. Their performance in the neuropsychological tests of memory, language, executive functions and neuropsychiatric inventory was assessed considering their type of chronic disease, educational level and age. In addition, the cutoff points of cognitive normality of population samples were compared with the patients' performances. RESULTS: The cognitive disorders were shown to be associated with the three diseases studied, but with significant differences between them. CONCLUSION: The variables studied (low educational level and advanced age) were associated with various degrees of impairment in the different cognitive functions in the three pathological groups. However, FM and SLE groups showed significantly higher means of the neuropsychiatric symptoms of anxiety, irritability and hallucinations than the RA group in the neuropsychiatric inventory.

Programa de reabilitação neuropsicológica da memória aplicada à demência: um estudo não controlado intrasujeitos / Neuropsychological rehabilitation of memory applied to dementia: an intra-subject non-controlled study

Neste estudo não controlado intrassujeitos, 21 idosos com Alzheimer ou outras demências participaram de um Programa de Reabilitação Neuropsicológica, com oficinas de jardinagem e pistas coloridas. Após o programa, houve aumento nos escores dos seguintes testes: Miniexame do Estado Mental (Z=-1,98, p<0,05); Subteste Verbal de Semelhanças da Escala Wechsler [(Z=-2,09) p<0,05] e Subteste de Aprendizagem de Pares de Fácil Associação para Evocação Tardia da Escala de Memória de Wechsler [(Z=-2,07) p<0,05]. Paralelamente, observou-se redução dos escores de depressão na Escala de Depressão Geriátrica de Yesavage [(Z=-3,02) p<0,00]. Foi demonstrado ainda que essa redução estava associada à aprendizagem de pistas contextuais (reminiscências e sinalizadores) e ao tratamento com anticolinesterásicos administrados por 4 ou 12 semanas [(Z=-2,31) p<0,02]. Ressalta-se, entretanto, que o mesmo não ocorreu com participantes submetidos ao tratamento de 30 semanas [(Z=-2,21) p<0,02].

In this intra-subject non-controlled study, twenty-one elderly patients with Alzheimer Disease or other forms of dementia participated in a neuropsychological rehabilitation program involving gardening and colored cues. At the end of the neuropsychological rehabilitation program, improved scores were noted in the following tests: Mini-Mental State Examination (Z=-1.98, p<0.05); Wechsler Verbal Performance Scale subtest [(Z=-2.09) p<0.05]; Wechsler Memory Scale (Associated Pairs with Delayed Recall) [(Z=-2.07) p<0.05] and in the Yesavage Geriatric Depression Scale [(Z=-3.02) p<0.00]. It was also demonstrated that patients who learnt the contextual cues (reminiscences and flags) saw a significant reduction in the Geriatric Depression Scale. Depression Scale scores were lower in those who correctly free-recalled this association (F=2.12, p=0.14). Use of anticholinesterase drugs in the 4th and 12th weeks was associated with a reduction in the Geriatric Depression Scale, but not for those in the 30th week following the neuropsychological rehabilitation program.

Programa de reabilitação neuropsicológica da memória aplicada à demência: um estudo não controlado intrasujeitos / Neuropsychological rehabilitation of memory applied to dementia: an intra-subject non-controlled study

Neste estudo não controlado intrassujeitos, 21 idosos com Alzheimer ou outras demências participaram de um Programa de Reabilitação Neuropsicológica, com oficinas de jardinagem e pistas coloridas. Após o programa, houve aumento nos escores dos seguintes testes: Miniexame do Estado Mental (Z=-1,98, p<0,05); Subteste Verbal de Semelhanças da Escala Wechsler [(Z=-2,09) p<0,05] e Subteste de Aprendizagem de Pares de Fácil Associação para Evocação Tardia da Escala de Memória de Wechsler [(Z=-2,07) p<0,05]. Paralelamente, observou-se redução dos escores de depressão na Escala de Depressão Geriátrica de Yesavage [(Z=-3,02) p<0,00]. Foi demonstrado ainda que essa redução estava associada à aprendizagem de pistas contextuais (reminiscências e sinalizadores) e ao tratamento com anticolinesterásicos administrados por 4 ou 12 semanas [(Z=-2,31) p<0,02]. Ressalta-se, entretanto, que o mesmo não ocorreu com participantes submetidos ao tratamento de 30 semanas [(Z=-2,21) p<0,02].(AU)

In this intra-subject non-controlled study, twenty-one elderly patients with Alzheimer Disease or other forms of dementia participated in a neuropsychological rehabilitation program involving gardening and colored cues. At the end of the neuropsychological rehabilitation program, improved scores were noted in the following tests: Mini-Mental State Examination (Z=-1.98, p<0.05); Wechsler Verbal Performance Scale subtest [(Z=-2.09) p<0.05]; Wechsler Memory Scale (Associated Pairs with Delayed Recall) [(Z=-2.07) p<0.05] and in the Yesavage Geriatric Depression Scale [(Z=-3.02) p<0.00]. It was also demonstrated that patients who learnt the contextual cues (reminiscences and flags) saw a significant reduction in the Geriatric Depression Scale. Depression Scale scores were lower in those who correctly free-recalled this association (F=2.12, p=0.14). Use of anticholinesterase drugs in the 4th and 12th weeks was associated with a reduction in the Geriatric Depression Scale, but not for those in the 30th week following the neuropsychological rehabilitation program.(AU)

Emotion processing for arousal and neutral content in Alzheimer's disease.

Objective. To assess the ability of Alzheimer's disease (AD) patients to perceive emotional information and to assign subjective emotional rating scores to audiovisual presentations. Materials and Methods. 24 subjects (14 with AD, matched to controls for age and educational levels) were studied. After neuropsychological assessment, they watched a Neutral story and then a story with Emotional content. Results. Recall scores for both stories were significantly lower in AD (Neutral and Emotional: P = .001). CG assigned different emotional scores for each version of the test, P = .001, while ratings of AD did not differ, P = .32. Linear regression analyses determined the best predictors of emotional rating and recognition memory for each group among neuropsychological tests battery. Conclusions. AD patients show changes in emotional processing on declarative memory and a preserved ability to express emotions in face of arousal content. The present findings suggest that these impairments are due to general cognitive decline.

[Neuropsicologic evaluation of children with congenital and acquired hemyparesis--early results]. / Avaliação neuropsicológica de crianças com hemiparesia congênita e adquirida--resultados preliminares.

PURPOSE: To present the preliminary results of neuropsychological assessment for children with congenital and acquired hemiparesis with or not seizures. METHODS: Nine children at a age of 5 and 14 years old, were studied individually by one battery of test to neuropsychological assessment of cognitive function, language, gnosia, praxia visuo-motor and memory processing and emotional aspect. RESULTS: Children with hemiparesis demonstrated minimal or severe cognitive dysfuctions, impaired language abilities, poor visuo-motor and memory processing and alteration in emotional aspect. Acquired hemiparesis with seizures in childhood had a severe cognitive deficits, but congenital hemiparesis with or not seizures the neuropsychological assessment demonstrate minimal or moderate cortical deficits. CONCLUSIONS: Theses preliminary results demonstrated that congenital or acquired hemiparesis associated or not with seizures present cortical dysfuctions. The worst results was observed in acquired hemiparesis with epileptic seizures.