Global and local ancestry modulate APOE association with Alzheimer's neuropathology and cognitive outcomes in an admixed sample.

Dementia is more prevalent in Blacks than in Whites, likely due to a combination of environmental and biological factors. Paradoxically, clinical studies suggest an attenuation of APOE ε4 risk of dementia in African ancestry (AFR), but a dearth of neuropathological data preclude the interpretation of the biological factors underlying these findings, including the association between APOE ε4 risk and Alzheimer's disease (AD) pathology, the most frequent cause of dementia. We investigated the interaction between African ancestry, AD-related neuropathology, APOE genotype, and functional cognition in a postmortem sample of 400 individuals with a range of AD pathology severity and lack of comorbid neuropathology from a cohort of community-dwelling, admixed Brazilians. Increasing proportions of African ancestry (AFR) correlated with a lower burden of neuritic plaques (NP). However, for individuals with a severe burden of NP and neurofibrillary tangles (NFT), AFR proportion was associated with worse Clinical Dementia Rating sum of boxes (CDR-SOB). Among APOE ε4 carriers, the association between AFR proportion and CDR-SOB disappeared. APOE local ancestry inference of a subset of 309 individuals revealed that, in APOE ε4 noncarriers, non-European APOE background correlated with lower NP burden and, also, worse cognitive outcomes than European APOE when adjusting by NP burden. Finally, APOE ε4 was associated with worse AD neuropathological burden only in a European APOE background. APOE genotype and its association with AD neuropathology and clinical pattern are highly influenced by ancestry, with AFR associated with lower NP burden and attenuated APOE ε4 risk compared to European ancestry.

Control Attitudes Scale-Revised-Brazilian Version.

BACKGROUND: Heart failure demands self-care skills and behaviors that can be negatively impacted by a low level of perceived control (PC), a belief about having the necessary resources to deal with negative events. Having valid and reliable instruments to measure PC is important to support interventions that improve self-care and related outcomes. The Control Attitudes Scale-Revised (CAS-R) was developed in the United States to measure PC in cardiac conditions. In Brazil, there are no instruments available to measure this construct. OBJECTIVE: The aims of this study were to translate and adapt the CAS-R to the Brazilian population and to assess the content validity of the adapted version. METHODS: The CAS-R was translated, back-translated, and assessed by an expert committee for linguistic equivalences. An agreement > 80% was considered adequate. Content validity (clarity, theoretical relevance, and practical pertinence) was assessed by both an expert professional panel (n = 6-8) and a panel of patients with heart failure (n = 40). A content validity coefficient > 0.70 was considered acceptable. RESULTS: The translations to Brazilian Portuguese were considered consistent with the original CAS-R. In the third round of linguistic equivalence assessment, all items achieved acceptable agreement, except for 2 items. After modifications to the instrument to achieve adequate equivalences, the adapted version had a final content validity coefficient of 0.93. Most patients were able to understand the instrument. CONCLUSIONS: The CAS-R-Brazilian version is equivalent to the original CAS-R and has satisfactory evidence of content validity. Additional psychometric testing will be performed to allow for the assessment of PC in individuals with heart failure in Brazil.

Incidence of Medical Adhesive-Related Skin Injuries and Associated Factors After Pediatric Congenital Heart Surgery: A Prospective Cohort Study.

PURPOSE: The aim of this study was to identify the incidence, characteristics, and factors associated with medical adhesive-related skin injuries (MARSI). DESIGN: Prospective cohort study. SUBJECTS AND SETTINGS: The sample comprised 136 children in the postoperative period after congenital heart surgery. The study setting was in a 31-bed pediatric surgical intensive care unit (ICU) of a university hospital in Sao Paulo, Brazil. METHODS: Patients were followed from admission, with daily skin assessments, until the onset of MARSI or ICU discharge. Outcomes were compared by Fisher's exact test, Pearson's χ2 test, Mann-Whitney test, Brunner-Munzel test, and Welch 2-sample t test. RESULTS: The incidence of MARSI was 60.3%, with 85 injuries in 82 patients. The highest occurrence was on postoperative day 2 (27 wounds; 31.8%). The most frequent medical adhesive associated with MARSI was transparent film dressing (n = 74; 86.6%). Factors associated with MARSI were age (P = .000), number of devices inserted (P = .000), Braden Q Scale score (P = .005), duration of surgery (P = .021), cardiopulmonary bypass duration (P = .000), duration of mechanical ventilation (P = .000), and length of ICU stay (P = .000). Children who developed MARSI received more blood components (P = .039), vasopressors (P = .000), and corticosteroids (P = 0.000); required longer sedation (P = .000); and had more edema (P = .001). CONCLUSION: This high incidence indicates the need for greater awareness and prompt action in response to MARSI. Polyurethane transparent film without concurrent use of a skin barrier product should be avoided.

Incidence of pressure injuries and risk factors in a paediatric surgical intensive care unit: a prospective cohort study.

OBJECTIVES: The aim of the study was to evaluate the incidence of, and risk factors for, the occurrence of pressure injuries (PIs) in a paediatric surgical intensive care unit (ICU). METHOD: This is a prospective cohort study of 153 children in the postoperative period. Patients were assessed daily by physical examination and data were collected. All independent variables were included in a logistic regression. RESULTS: The mean age of the cohort was 2 years, and the incidence of PI was 15.7%. According to the Braden Q Scale, 58.2% of patients were at high risk of developing PI; 79.3% of PIs were related to immobility and 69.0% were at stage 1. Risk factors were ICU length of stay and the number of medical devices used. CONCLUSION: The incidence of PI was high because patients were mostly at a considerable risk of developing a PI. PI was associated with several factors, especially length of ICU stay and number of devices, both of which are indirect indicators of the severity of patient condition and healthcare costs.

Factors associated with the increased bleeding in the postoperative period of cardiac surgery: A cohort study.

AIMS AND OBJECTIVES: To identify factors associated with the increased bleeding in patients during the postoperative period after cardiac surgery. BACKGROUND: Bleeding is among the most frequent complications that occur in the postoperative period after cardiac surgery, representing one of the major factors in morbidity and mortality. Understanding the factors associated with the increased bleeding may allow nurses to anticipate and prioritise care, thus reducing the mortality associated with this complication. DESIGN: Prospective cohort study. METHODS: Adult patients in a cardiac hospital who were in the postoperative period following cardiac surgery were included. Factors associated with the increased bleeding were investigated by means of linear regression, considering time intervals of 6 and 12 hr. RESULTS: The sample comprised 391 participants. The factors associated with the increased bleeding in the first 6 hr were male sex, body mass index, cardiopulmonary bypass duration, anoxia duration, metabolic acidosis, higher heart rate, platelets and the activated partial thromboplastin time in the postoperative period. Predictors in the first 12 hr were body mass index, cardiopulmonary bypass duration, metabolic acidosis, higher heart rate, platelets and the activated partial thromboplastin time in the postoperative. CONCLUSIONS: This study identified factors associated with the increased postoperative bleeding from cardiac surgery that have not been reported in previous studies. The nurse is important in the vigilance, evaluation and registry of chest tube drainage and modifiable factors associated with the increased bleeding, such as metabolic acidosis and postoperative heart rate, and in discussions with the multiprofessional team. RELEVANCE TO CLINICAL PRACTICE: Knowledge of the factors associated with the increased bleeding is critical for nurses so they can provide prophylactic interventions and early postoperative treatment when needed.

Level of acuity, severity and intensity of care of adults and older adults admitted to the Intensive Care Unit.

OBJECTIVE: To characterize the level of acuity, severity and intensity of care of adults and older adults admitted to Intensive Care Units and to identify the predictors of severity with their respective predictive capacity according to the age group. METHOD: A retrospective cohort based on the analysis of medical records of individuals admitted to eight adult intensive care units in the city of São Paulo. The clinical characteristics at admission in relation to severity profile and intensity of care were analyzed through association and correlation tests. The predictors were identified by linear regression and the predictive capacity through the ROC curve. RESULTS: Of the 781 cases (41.1% from older adults), 56.2% were males with a mean age of 54.1 ± 17.3 years. The burden of the disease, the organic dysfunction and the number of devices were the predictors associated with greater severity among adults and older adults, in which the organic dysfunction had the highest predictive capacity (80%) in both groups. CONCLUSION: Adults and older adults presented a similar profile of severity and intensity of care in admission to the Intensive Care Unit. Organic dysfunction was the factor with the best ability to predict severity in adults and older adults.

Factors associated with brain volume in major depression in older adults without dementia: results from a large autopsy study.

OBJECTIVE: We examined brain volume and atrophy in individuals with major depressive disorder (MDD) without dementia that were referred to a large autopsy service. We also examined potential risk factors for brain atrophy, including demographics and clinical variables. METHODS: In this study, 1373 participants (787 male) aged 50 years or older who died from natural causes were included. Participants with no reliable informant, with cognitive impairment or dementia, with a medical history of severe chronic disease, or with prolonged agonal state were excluded. Presence of MDD at least once in their lifetime was defined according to the Structured Clinical Interview for DSM. Brain volume was measured immediately after removal from the skull. RESULTS: Mean age at death was 68.6 ± 11.6, and MDD was present in 185 (14%) individuals. Smaller brain volume was associated with older age (p < 0.001), lower education (years; p < 0.001), hypertension (p = 0.001), diabetes (p = 0.006), and female gender (p < 0.001). In the multivariate analysis adjusted for sociodemographics and cardiovascular risk factors, smaller brain volume was not associated with major depression (ß = -0.86, 95% CI = -26.50 to 24.77, p = 0.95). CONCLUSIONS: In this large autopsy study of older adults, MDD was not associated with smaller brain volumes. Regardless of the presence of MDD, in this sample of older adults without dementia, we found that smaller brain volumes were associated with risk factors for brain neurodegeneration such as older age, diabetes, hypertension, and lower education. Copyright © 2017 John Wiley & Sons, Ltd.

Assessing gastric residual volume: a description of nurses' clinical practice. / Aferição do volume residual gástrico: retrato da prática clínica de enfermeiros.

OBJECTIVE: To analyze the differences in nurses' clinical practice for assessing residual gastric volume and identifying the theoretical framework which supports their practice. METHOD: A cross-sectional study carried out by sending an online questionnaire by e-mail to nurses registered at the Regional Nursing Council of the State of São Paulo. RESULTS: This study included 598 nursing professionals, with 484 only providing care to adults and 114 exclusively to children. The gastric residual volume test is performed by 83.4% of nursing professionals; in most cases the suspension and prescription of enteral nutritional therapy are performed by the physician. Suspension of enteral nutritional therapy among adults predominantly occurs when the gastric residual volume is equal to 200 ml, and in children when values are less than 100 ml. Procedure after diet suspension involves the return of aspirated gastric contents and maintaining the catheter closed until the next hour in 48.3% of the procedures among adults, and 68.4% among children. 42.9% of the participants in this study were not aware of the theoretical basis that supports the test performance. CONCLUSION: We can highlight the need for nurses' training and further studies focused on the practice for assessing gastric residual volume.

Locus coeruleus volume and cell population changes during Alzheimer's disease progression: A stereological study in human postmortem brains with potential implication for early-stage biomarker discovery.

INTRODUCTION: Alzheimer's disease (AD) progression follows a specific spreading pattern, emphasizing the need to characterize those brain areas that degenerate first. The brainstem's locus coeruleus (LC) is the first area to develop neurofibrillary changes (neurofibrillary tangles [NFTs]). METHODS: The methods include unbiased stereological analyses in human brainstems to estimate LC volume and neuronal population in controls and individuals across all AD stages. RESULTS: As the Braak stage increases by 1 unit, the LC volume decreases by 8.4%. Neuronal loss started only midway through AD progression. Age-related changes spare the LC. DISCUSSION: The long gap between NFT accumulation and neuronal loss suggests that a second trigger may be necessary to induce neuronal death in AD. Imaging studies should determine whether LC volumetry can replicate the stage-wise atrophy observed here and how these changes are specific to AD. LC volumetry may develop into a screening biomarker for selecting high-yield candidates to undergo expensive and less accessible positron emission tomography scans and to monitor AD progression from presymptomatic stages.

Aging as a predictor of nursing workload in Intensive Care Unit: results from a Brazilian Sample.

OBJECTIVE: Verify if aging is an independent predictor of NW in ICU, according to age groups, and its predictive value as a determinant of NW in ICU. METHODS: Study was conducted from 2012 to 2016. A convenience sample composed by patients (age ≥ 18) admitted to nine ICU belonging to a Brazilian hospital, was analyzed. Age was assumed as an independent variable and NW (measured by the Nursing Activities Score - NAS) as dependent. Linear regression model and ROC curve were used for the analysis. RESULTS: 890 participants (361 older people), mostly males (58.1%). The mean NAS score was higher among older participants in comparison to adults (p=0.004) but not within categories of aging (p=0.697). Age was responsible for 0.6% of NAS score. Each year of age increases NAS score in 0.081 points (p=0.015). However, age was not a good predictor of NAS score (AUC = 0.394; p=0.320). CONCLUSION: The care of older people in ICU is associated with an increase in NW, compared to adults. Aging can be considered an associated factor but not a good predictor of NW in ICU. OBJETIVO: Verificar si el envejecimiento es un predictor independiente de la Carga de Trabajo de Enfermería (CTE) en la Unidad de Cuidados Intensivos (UCI), según grupos etarios y su valor predictivo como determinante de la CTE en la UCI. MÉTODOS: Se analizó una muestra de conveniencia compuesta por pacientes (edad ≥ 18) ingresados en nueve UCI pertenecientes a un hospital brasileño. La edad se asumió como variable independiente y como variable dependiente la carga de trabajo de enfermería -medida por el sistema Nursing Activities Score (NAS) de puntuación de actividades de enfermería. Para el análisis, se utilizaron el modelo de regresión lineal y la curva ROC. RESULTADOS: 890 participantes (361 adultos mayores), en su mayoría varones (58,1%). La puntuación NAS promedio fue mayor entre los participantes adultos mayores en comparación con los adultos (p=0,004), pero no en las categorías de envejecimiento (p=0,697). La edad fue responsable del 0,6% de la puntuación NAS. Cada año de edad aumenta la puntuación NAS en 0,081 puntos (p=0,015). Sin embargo, la edad no resultó un buen predictor de la puntuación NAS (AbC=0,394; p=0,320). CONCLUSIÓN: El cuidado de los adultos mayores en UCI se asocia con un aumento de la CTE en comparación con los adultos. El envejecimiento puede considerarse un factor asociado, pero no un buen predictor de la CTE en UCI.

[Heart failure as a predictor of functional dependence in hospitalized elderly]. / Insuficiência cardíaca como preditor de dependência funcional em idosos hospitalizados.

OBJECTIVE: Identify whether Heart Failure (HF) is a predictor of functional dependence for Basic Activities of Daily Living (BADL) in hospitalized elderly. METHODS: We investigated medical records and assessed dependence to BADL (by the Katz Index) of 100 elderly admitted to a geriatric ward of a university hospital. In order to verify if HF is a predictor of functional dependence, linear regression analyzes were performed. RESULTS: The prevalence of HF was 21%; 95% of them were dependent for BADLs. Bathing was the most committed ADL. HF is a predictor of dependence in hospitalized elderlies, increasing the chance of functional decline by 5 times (95% CI, 0.94-94.48), the chance of functional deterioration by 3.5 times (95% CI, 1.28-11.66; p <0.02) and reducing 0.79 points in the Katz Index score (p <0.05). CONCLUSION: HF is a dependency predictor of ADL in hospitalized elderly, who tend to be more dependent, especially for bathing.

Nursing workload: is it a predictor of healthcare associated infection in intensive care unit? / Carga de trabalho de enfermagem: preditor de infecção relacionada à assistência à saúde na terapia intensiva?

Objective To analyze the influence of nursing workload on the occurrence of healthcare associated infection (HAI) in patients in the intensive care unit (ICU), according to type of treatment. Method Retrospective cohort study developed in nine ICUs in São Paulo, Brazil, from September to December 2012. Nursing workload was measured by the Nursing Activities Score (NAS). The Student's t and Fisher's exact tests and logistic regressions were used in the analyses. Results The sample was composed of 835 patients (54.3±17.3 years; 57.5% male), of which 12.5% acquired HAI in the ICU. The NAS of the patients admitted for clinical treatment was 71.3±10.9, and for surgery 71.6±9.2. Length of stay in ICU and severity were predictive factors for occurrence of HAI in patients admitted to the unit for clinical or surgical treatment, and male sex only for surgical patients. When considering the admissions independent of type of treatment, in addition to the variables mentioned above, index of comorbidities also remained in the regression model. The NAS was not a predictive factor of HAI. Conclusion Nursing workload did not influence occurrence of HAI in the patients included in this study.

Validity of the Katz Index to assess activities of daily living by informants in neuropathological studies.

OBJECTIVE: To analyze the evidences of construct validity of the Katz Index for the retrospective assessment of activities of daily living (ADL) by informants, to assist neuropathological studies in the elderly. METHOD: A cross-sectional study analyzed the functional ability of ADL measure by the Katz Index, of 650 cases randomly selected from the Brazilian Brain Bank of the Ageing Brain Study Group (BBBABSG) database. Sample was divided in two subsamples for the analysis (N=325, each) and then stratified according to cognitive decline assessed by the Clinical Dementia Rating Scale (CDR). Factor analyses with calculations of internal consistency and invariance were performed. RESULTS: Factor analysis evidenced a unidimensional instrument with optimal internal consistency, in all subgroups. Goodness of fit indices were obtained after two treatments of covariance, indicating adequacy of the scale for assessing ADL by informants. The scale is invariant to cognitive decline meaning that it can be used for subjects with or without cognitive impairment. CONCLUSION: Katz Index is valid for the retrospective assessment of basic ADL by informants, with optimal reliability.

Psychometric Properties of the FRAIL Scale for Frailty Screening: A Scoping Review.

OBJECTIVES: The aim of this study was to identify and map the available psychometric evidence of the FRAIL scale to screen frailty among older adults. DESIGN: Scoping review of published articles on 9 databases (PubMed, Scopus, Web of Science, CINAHL, Cochrane, Embase, PsycINFO, VHL Regional Portal, and Epistemonikos) and 8 gray literature sources. SETTING AND PARTICIPANTS: Studies in adults or older adults, in both inpatient and outpatient settings (without context restrictions). METHODS: Cross-cultural adaptations, validity and reliability evidence studies, whose main objective was to develop and/or validate and/or culturally adapt the FRAIL Scale to assess frailty in adults or older adults, published since 2007 were included in this scoping review. The databases were searched between February and March 2023.The JBI methodology for scoping reviews was used to guide the process. The protocol of this study was registered on the Open Science Framework platform. RESULTS: Of the 1031 records found during the search, 40 articles that met the established criteria for analysis were included. Nearly 1 in 10 countries worldwide (11.9%) have psychometric evidence regarding this scale. Ten studies were identified with the goal of cross-cultural adaptation and/or validation in a different cultural context for the first time. Twenty-one of 40 studies used Morley 2012 operationalization of FRAIL Scale criteria. Thirty-nine studies provided evidence of associations with other variables. The rest of the evidence for content, internal structure, response processes, and reliability was only evaluated in cross-cultural adaptation studies, with limitations. CONCLUSIONS AND IMPLICATIONS: In conclusion, there is some evidence of validity for FRAIL Scale; nevertheless, studies are needed to adapt the scale to new cultures, using rigorous Cross-Cultural Adaptation processes, and to provide new evidence of validity and reliability, to strengthen and consolidate the body of knowledge for its application to various patient groups and context.

Digital Health Literacy Instrument: Brazilian Version-Cross-Cultural Adaptation and Content Validity for Individuals With Heart Failure.

Background and purpose: Assessment of digital health literacy should be a major concern for healthcare providers. We aimed to translate and adapt the Digital Health Literacy (DHL) Instrument into Brazilian Portuguese and examine the content validity for individuals with heart failure (HF). Methods: The instrument was translated, back translated, and evaluated by a panel of six experts regarding linguistic equivalences. An agreement analysis was performed, with values ≥80% considered acceptable. The experts then evaluated clarity, theoretical relevance, and practical pertinence. The content validity index (CVI) was calculated for each item. A CVI ≥.83 was considered acceptable. The expert's opinions were also evaluated through the modified kappa coefficient for content validity studies. Values >.74 were considered excellent. The content validity ratio (CVR) was also calculated. A critical value of CVR of 1.00 was determined. Cognitive testing (understanding the meaning of each item and their respective answers) was performed with 33 individuals with HF. Results: The adapted version obtained an agreement of ≥83.3% for each item on linguistic equivalences. Total CVI was ≥0.83, kappa values for each item were >.74, and the CVR values were 1.00 for all items. After two rounds of evaluation, all patients were able to understand the items and response scale. Conclusions: The Brazilian version has satisfactory evidence of linguistic and content validity to measure DHL in patients with HF. Additional psychometric properties will be tested in the country.

Content validity evidence of the Brazilian version of the Cognitive Symptom Checklist-Work-21.

OBJECTIVE: to cross-culturally adapt and assess the content validity evidence of the Cognitive Symptom Checklist-Work-21 for the Brazilian context. METHOD: a psychometric study of cross-cultural adaptation, covering the stages of translation, reconciliation, back-translation, intercultural equivalence assessment and content validity evidence analysis, considering Content Validity Ratio parameters in breast cancer survivors. RESULTS: the translations were equivalent to the original version. Colloquial expressions were modified, tense, verbal adjusted, and two items containing multiple commands were separated. The final version now contains 22 items, presenting semantic, conceptual, idiomatic and experimental equivalences. The pre-test indicated good understanding and ease in the response process. CONCLUSION: the final version was defined as "Lista de verificação de sintomas cognitivos relacionados ao trabalho - 22 itens", showing good linguistic equivalence and strong evidence of content validity in the Brazilian context.

The role of assessment in competence-based gerontological advanced practice nursing.

Population aging challenges healthcare systems, requiring gerontological advanced practice nurses (GAPN) to address specific and complex care requirements of older adults. GAPN implement evidence-based practices directed to patients and families, focusing on health promotion and protection, disease prevention, recovery, and rehabilitation. In competence-based gerontological advanced practice, comprehensive geriatric assessment is essential for implementing the care plan. In this theoretical essay we reflect about the role of assessment in competence-based advanced nursing practice directed to the care of older adults. From our perspective, geriatric assessment for a high-quality practice must be comprehensive, multidimensional, interdisciplinary, and planned. GAPN must have solid competencies for clinical skills and caring practices; education for health literacy; collaborative care; system management for continuity of care; ethics, advocacy, and moral agency; and evidenced-based practice inquiry. Gerontological models of care and GAPN competencies serve as frameworks to guide practice while assessment is fundamental for providing age-friendly care to older adults.

Active lifestyle enhances protein expression profile in subjects with Lewy body pathology.

Clinical trials of the effects of physical activity have reported improvements in symptoms and quality of life in patients with Parkinson's disease (PD). Additionally, morphological brain changes after exercising were reported in PD animal models. However, these lifestyle-related changes were not evaluated in postmortem brain tissue. OBJECTIVE: We aimed to evaluate, by immunohistochemistry, astrocytes, tyrosine hydroxylase (TH) and structural proteins expression (neurofilaments and microtubules - MAP2) changes in postmortem brain samples of individuals with Lewy body pathology. METHODS: Braak PD stage≥III samples, classified by neuropathology analysis, from The Biobank for Aging Studies were classified into active (n=12) and non-active (n=12) groups, according to physical activity lifestyle, and paired by age, sex and Braak staging. Substantia nigra and basal ganglia were evaluated. RESULTS: Groups were not different in terms of age or gender and had similar PD neuropathological burden (p=1.00). We observed higher TH expression in the active group in the substantia nigra and the basal ganglia (p=0.04). Astrocytes was greater in the non-active subjects in the midbrain (p=0.03) and basal ganglia (p=0.0004). MAP2 levels were higher for non-active participants in the basal ganglia (p=0.003) and similar between groups in the substantia nigra (p=0.46). Neurofilament levels for non-active participants were higher in the substantia nigra (p=0.006) but not in the basal ganglia (p=0.24). CONCLUSION: Active lifestyle seems to promote positive effects on brain by maintaining dopamine synthesis and structural protein expression in the nigrostriatal system and decrease astrogliosis in subjects with the same PD neuropathology burden.

Estudos dos efeitos da atividade física relataram melhora nos sintomas e na qualidade de vida de pacientes com doença de Parkinson (DP). Além disso, alterações morfológicas do cérebro após o exercício físico foram relatadas em modelos animais da DP. No entanto, essas mudanças relacionadas ao estilo de vida não foram avaliadas em tecido cerebral post-mortem. OBJETIVO: Avaliar a expressão de astrócitos, tirosina hidroxilase (TH) e a expressão de proteínas estruturais (neurofilamentos e microtúbulos ­ MAP2) por imuno-histoquímica, em amostras cerebrais post-mortem de indivíduos com corpos de Lewy. MÉTODOS: Amostras com estágio de Braak para DP≥III, classificação neuropatológica, fornecidas pelo biobanco de estudos do envelhecimento foram classificadas em grupos ativos (n=12) e não ativos (n=12), de acordo com o estilo de vida (atividade física), e pareados por idade, sexo e estadiamento de Braak. Analisou-se a substância negra e gânglios da base. RESULTADOS: Idade, sexo e classificação para DP foram semelhantes (p=1,00). Observou-se maior expressão de TH no grupo ativo (p=0,04). Amostras de não ativos revelaram maior expressão de astrócitos no mesencéfalo (p=0,03) e nos gânglios da base (p=0,0004); MAP2 nos gânglios da base (p=0,003); os níveis de neurofilamentos foram maiores na substância negra (p=0,006). CONCLUSÃO: O estilo de vida ativo parece promover efeitos positivos no cérebro, mantendo a síntese de dopamina e a expressão estrutural de proteínas no sistema nigrostriatal e com diminuição da ativação de astrócitos em indivíduos com a mesma classificação neuropatológica para a DP.

Brazilian version of the Rivermead Post-Concussion Symptoms Questionnaire.

BACKGROUND: After a traumatic brain injury, post-concussion symptoms are commonly reported by patients. Although common, these symptoms are difficult to diagnose and recognize. To date, no instruments evaluating post-concussion symptoms have been culturally translated or adapted to the Brazilian context. OBJECTIVE: To culturally adapt the Rivermead Post-Concussion Symptoms Questionnaire for use in Brazilian Portuguese. METHODS: Cross-cultural adaptation was done in five steps: translation, synthesis of translations, back-translation, evaluation by two expert committees and two pretests among adults in a target population. RESULTS: The semantic, idiomatic, cultural and experimental aspects of the adaptation were considered adequate. The content validity coefficient of the items regarding language clarity, pratical pertinence, relevance and dimensionality were considered adequate for evaluating the desired latent variable. Both pretests demonstrated that the instrument had satisfactory acceptability. CONCLUSION: The Brazilian version, named Questionário Rivermead de Sintomas pós Concussionais (RPQ-Br), has been adapted, and is ready for use in the Brazilian context.