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1.
Eur J Neurol ; 30(4): 934-942, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36692092

RESUMO

BACKGROUND AND PURPOSE: Lifestyle factors have been implicated in the long-lasting neurodegenerative process in prodromal Parkinson's disease (pPD). The aim was to investigate the associations between adherence to a Mediterranean diet (MeDi) and longitudinal changes of pPD probability and the development of Parkinson's disease (PD) or pPD in a Mediterranean older population. METHODS: Data from the Hellenic Longitudinal Investigation of Aging and Diet cohort (community-dwelling individuals, aged ≥ 65 years) were used. A detailed food frequency questionnaire was used to evaluate dietary intake and calculate MeDi adherence score, ranging from 0 to 55, with higher scores indicating higher adherence. The probability of pPD was calculated according to the updated Movement Disorder Society research criteria. RESULTS: In all, 1047 non-PD/dementia with Lewy bodies (DLB) participants were followed for 3 ± 1 years. MeDi adherence was associated with lower increase in pPD probability over time (b = -0.003, 95% confidence interval -0.006 to -0.001, p = 0.010). Forty-nine participants had incident possible/probable pPD (i.e., pPD probability ≥ 30%). Compared to the participants in the lowest quartile of MeDi adherence, those in the higher quartiles had an approximately 60%-70% lower risk for possible/probable pPD (p for trend 0.003). MeDi-pPD associations were driven by both motor and non-motor pPD markers and not from risk markers. Also, 21 participants were diagnosed with PD/DLB at follow-up. For each unit increase in the MeDi score, there was a 9%-10% lower risk for PD/DLB (hazard ratio 0.906 [95% confidence interval 0.823-0.997], p = 0.044). CONCLUSIONS: Mediterranean diet adherence is associated with lower increase in pPD probability over time and lower possible/probable pPD and PD/DLB incidence in older Mediterranean people. More studies are needed to confirm our results in other populations.


Assuntos
Dieta Mediterrânea , Doença por Corpos de Lewy , Doença de Parkinson , Humanos , Idoso , Estudos Longitudinais , Doença de Parkinson/complicações , Doença por Corpos de Lewy/complicações , Probabilidade
2.
Mov Disord ; 37(1): 200-205, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34695238

RESUMO

BACKGROUND: A decrease in glutathione (GSH) levels is considered one of the earliest biochemical changes in Parkinson's disease (PD). OBJECTIVE: The authors explored the potential role of plasma GSH as a risk/susceptibility biomarker for prodromal PD (pPD) by examining its longitudinal associations with pPD probability trajectories. METHODS: A total of 405 community-dwelling participants (median age [interquartile range] = 73.2 [7.41] years) without clinical features of parkinsonism were followed for a mean (standard deviation) of 3.0 (0.9) years. RESULTS: A 1 µmol/L increase in plasma GSH was associated with 0.4% (95% confidence interval [CI], 0.1%-0.7%; P = 0.017) less increase in pPD probability for 1 year of follow-up. Compared with participants in the lowest GSH tertile, participants in the highest GSH tertile had a 12.9% (95% CI, 22.4%-2.2%; P = 0.020) slower rate of increase of pPD probability for 1 year of follow-up. CONCLUSION: Plasma GSH was associated with pPD probability trajectories; therefore, it might assist in the identification of individuals who are likely to reach the threshold for pPD diagnosis more rapidly. © 2021 International Parkinson and Movement Disorder Society.


Assuntos
Glutationa , Doença de Parkinson , Sintomas Prodrômicos , Idoso , Glutationa/sangue , Humanos , Doença de Parkinson/sangue , Doença de Parkinson/diagnóstico , Probabilidade
3.
Mov Disord ; 35(10): 1802-1809, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32567751

RESUMO

OBJECTIVE: The objective of this study was to validate the recently updated research criteria for prodromal Parkinson's disease (pPD) proposed by the International Parkinson's Disease and Movement Disorders Society. METHODS: A total of 16 of 21 markers of pPD were ascertained in the Hellenic Longitudinal Investigation of Aging and Diet cohort composed of community-dwelling individuals aged ≥65 years. The probability of pPD was calculated for 961 individuals without Parkinson's disease (PD) or dementia with Lewy bodies at baseline who were followed-up for a median of 3 years. The ability of the criteria to predict conversion to PD/dementia with Lewy bodies was assessed by estimating their sensitivity and specificity, plotting receiver operating characteristics curves, and using logistic regression. These analyses were repeated using the original criteria. RESULTS: No incident PD/dementia with Lewy bodies case had probable pPD at baseline (ie, ≥80% pPD probability). At cut-offs of 10%, 30%, and 50% probability of pPD, the sensitivity and specificity of the criteria ranged from 4.5% to 27.3%, and 85.7% to 98.3% respectively. The area under the receiver operating characteristics curve was 0.691 (95% confidence intervals, 0.605-0.777). In logistic regression models, the criteria-derived posttest odds of pPD were a significant predictor of conversion at follow-up. The updated criteria performed similarly to the original but showed a slight increase in sensitivity. CONCLUSIONS: The new criteria demonstrated suboptimal sensitivity in our random sample of community-dwelling individuals. The absence of specialized assessments with high likelihood ratios in our cohort could be hindering the demonstration of higher sensitivities. Such assessments should be a part of future validation attempts. © 2020 International Parkinson and Movement Disorder Society.


Assuntos
Doença de Alzheimer , Doença de Parkinson , Idoso , Estudos de Coortes , Humanos , Doença de Parkinson/diagnóstico , Sintomas Prodrômicos , Estudos Prospectivos
4.
Mov Disord ; 34(1): 48-57, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30306634

RESUMO

BACKGROUND: The International Parkinson and Movement Disorder Society recently introduced a methodology for probability score calculation for prodromal PD. OBJECTIVES: To assess the probability of prodromal PD in an older population and investigate its possible association with Mediterranean diet adherence. METHODS: Data from a population-based cohort study of older adults (HEllenic Longitudinal Investigation of Aging and Diet) in Greece were used. Probability of prodromal PD was calculated according to International Parkinson and Movement Disorder Society research criteria. A detailed food frequency questionnaire was used to evaluate dietary intake and calculate Mediterranean diet adherence score, ranging from 0 to 55, with higher scores indicating higher adherence. RESULTS: Median probability of prodromal PD was 1.9%, ranging from 0.2 to 96.7% in 1,731 PD-free individuals aged ≥ 65 (41% male). Lower probability for prodromal PD (P < 0.001) in the higher Mediterranean diet adherence groups was noted, driven mostly by nonmotor markers of prodromal PD, depression, constipation, urinary dysfunction, and daytime somnolence. Each unit increase in Mediterranean diet score was associated with a 2% decreased probability for prodromal PD (P < 0.001). Compared to participants in the lowest quartile of Mediterranean diet adherence, those in the highest quartile were associated with a ∼21% lower probability for prodromal PD. CONCLUSIONS: Adherence to the Mediterranean diet is associated with lower probability of prodromal PD in older people. Further studies are needed to elucidate the potential causality of this association, potential relation of the Mediterranean diet to delayed onset or lower incidence of PD, as well as the underlying neurobiological mechanisms. © 2018 International Parkinson and Movement Disorder Society.


Assuntos
Dieta Mediterrânea , Doença de Parkinson/prevenção & controle , Idoso , Biomarcadores/análise , Estudos de Coortes , Constipação Intestinal , Depressão/etiologia , Feminino , Grécia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Doença de Parkinson/complicações , Sintomas Prodrômicos , Cooperação e Adesão ao Tratamento
5.
Mov Disord ; 34(9): 1345-1353, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31314148

RESUMO

BACKGROUND: Identification and characterization of Parkinson's disease (PD) in its prodromal stage is crucial. OBJECTIVE: The objective of this study was to investigate the association between motor function and the probability of prodromal PD in a community-dwelling older population. METHODS: We used data from a population-based cohort of older adults (HELIAD study). Subjective motor function was evaluated with a 12-item motor symptoms questionnaire and objective motor function indirectly with a physical activity questionnaire and two gait speed tests. The probability of prodromal PD was calculated according to the Movement Disorder Society research criteria for n = 1731 without PD. Regression multiadjusted models were used to investigate the associations between each motor measure and prodromal PD probability. RESULTS: For each unit increase in motor symptoms score and for each kcal/kg/day lower energy expenditure (corresponding to 20 minutes of light walking/day for a 75-kg man) there was a 27% and 3% higher probability for prodromal PD, respectively (P < 0.001). Having at least one subjective motor symptom increased the odds of having possible/probable prodromal PD (n = 49; P < 0.05). Including subjective and indirect motor variables in the same model showed that both (symptoms and physical activity) contributed significantly to the model (P < 0.01). Excluding subthreshold parkinsonism from the calculation showed that gait speed less than 0.8 m/s was also associated with a higher prodromal PD probability score (P < 0.001). CONCLUSIONS: Subjective motor symptoms as well as simple objective motor measures of physical activity or gait speed are associated with a higher probability of prodromal PD in older adults. These data may serve to enable the early identification of prodromal PD cohorts, particularly if they are confirmed in longitudinal studies. © 2019 International Parkinson and Movement Disorder Society.


Assuntos
Transtornos dos Movimentos/diagnóstico , Movimento , Doença de Parkinson/diagnóstico , Sintomas Prodrômicos , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Depressão/psicologia , Metabolismo Energético , Feminino , Marcha , Grécia/epidemiologia , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Doença de Parkinson/epidemiologia , Probabilidade , Escalas de Graduação Psiquiátrica , Fatores Socioeconômicos , Inquéritos e Questionários
6.
Ann Nutr Metab ; 72(2): 134-141, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29393125

RESUMO

AIM: To examine the validity of published resting energy expenditure (REE) equations in Greek adults, and if indicated, develop new cohort-specific predictive REE equations. METHODS: Indirect calorimetry and anthropometric data were obtained from 226 adult volunteers of diverse age groups and body mass index ranges (18-60 years, 16.6-67.7 kg·m-2). Measured REE was compared to preexisting prediction equations via correlation, regression, and Bland-Altman analysis. Then, cohort-specific REE equations were developed using curve estimation and nonlinear regression. To reduce type I error, presently derived equations were validated by splitting the sample into a training and validation group. RESULTS: Preexisting equations over-predicted in-cohort REE. Equations by Livigston and Kohlstadt were most accurate at the individual level (63% accuracy), while formulas by Owen and collaborators elicited highest accuracy at the group level (-1.8% bias). Bland-Altman analysis showed proportional bias for most equations. Currently developed equations showed highest overall accuracy with 70% at the individual and group level (1.0% bias), with small differences between measured and predicted REE values (mean, 95% CI 36 [-15 to 88] kcal·day-1). CONCLUSION: Data indicate currently developed equations to be the most accurate and valid for estimating REE in Greek adults. Further studies should examine the developed equations in an independent sample.


Assuntos
Metabolismo Basal , Adolescente , Adulto , Antropometria , Índice de Massa Corporal , Calorimetria Indireta , Feminino , Grécia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Valores de Referência , Adulto Jovem
7.
Ethn Health ; 23(2): 221-232, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-27852110

RESUMO

OBJECTIVE: The aim of this case-control study was to compare Mediterranean diet (MD) adherence and anthropometry between Greek diaspora adolescents living in Istanbul and Greek adolescents, inhabitants of Athens. DESIGN: A total of 206 adolescents (103 from each site), aged 10.0-19.0 years old, all of Greek origin, were recruited from schools in Athens and minority schools in Istanbul, for the present case-control study. Participants at each site were age and sex-matched. Anthropometric measurements were performed, and diet adherence was assessed with the KIDMED score. RESULTS: Breakfast skipping, decreased dairy and increased commercially baked good/pastries consumption for breakfast, fast-food intake and consumption of several sweets each day was more prevalent in Istanbul, but, on the other hand, students from Athens reported eating fewer fruit, vegetables and nuts. The adoption of unhealthy eating habits in each site was counterbalanced by a more 'healthy' dietary element, resulting in an overall similar MD adherence between both sites. Additionally, although weight status was indifferent between the two cities, higher rates of abdominal obesity were recorded in Istanbul, when the weight-to-height ratio was used for diagnosis. CONCLUSIONS: Differences in several domains of the KIDMED score were recorded among cities, possibly as results of food availability and prices. However, MD adherence and weight status appeared similar, indicating that the dietary transition and acculturation experienced by the remnants is actually very slow and minimal during the 93 years since population exchange.


Assuntos
Adiposidade/fisiologia , Dieta Mediterrânea , Comportamento Alimentar/fisiologia , Adolescente , Antropometria , Índice de Massa Corporal , Estudos de Casos e Controles , Criança , Feminino , Grécia , Humanos , Masculino , Inquéritos e Questionários , Turquia/etnologia
8.
Am J Physiol Endocrinol Metab ; 309(5): E440-9, 2015 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-26152767

RESUMO

This review updates the effect of lifestyle on plasma triacylglycerols (TAG) in the postprandial state, commonly reported as postprandial lipemia (PPL), an independent risk factor for cardiovascular diseases (CVD). Numerous studies have shown that Mediterranean diet may reduce PPL. However, most of these studies were focused on the type of fat (i.e., monounsaturated fat from olive oil), and the other components of the Mediterranean lifestyle were neglected. Physical activity, an integral part of this lifestyle, is widely investigated on its own and shown to reduce PPL. In addition, preliminary results of studies examining other Mediterranean "ingredients", such as legumes, fish, and herbs, showed additional benefits; however, data on the long-term effects are limited. More studies are needed to confirm short-term results and investigate the effects of the whole Mediterranean lifestyle on PPL and whether these effects mediate its protective role on CVD. Moreover, investigation of the effects in nonhealthy populations and the underlying mechanisms would be clinically helpful in individualizing the appropriate intervention.


Assuntos
Dieta Mediterrânea , Hipertrigliceridemia/metabolismo , Estilo de Vida , Atividade Motora , Período Pós-Prandial , Doenças Cardiovasculares/sangue , Humanos , Fatores de Proteção , Triglicerídeos/sangue
9.
Mediterr J Rheumatol ; 34(1): 30-36, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37223598

RESUMO

Immunonutrition is the maintenance and induction of immune homeostasis with the use of nutritional factors, the so called, immunonutrients. Immunonutrition focuses on four "Is" representing an equal number of systemic responses with regards to: a) Immunity, b) Infection, c) Inflammation and d) Injury. Although at the early stages of the development of immunonutrition, its application was focused on malnourished patients, with a latter extension in the intensive care unit setting, today we acknowledge the great importance of immunonutrients in rheumatology. In rheumatic diseases (RDs), all the "Is" representing the four aims and targets of immunonutrition are fulfilled. Impaired Immunity is the hallmark of RDs, with both innate and adaptive immunity contributing to the development and course of each disease entity, representing distinct immunoregulation abnormalities, often paired with micronutrient deficiencies. Infections are both drivers and a frequent epiphenomenon of systemic RDs. Subclinical inflammation is propagated long before the first signs or symptoms of RDs and musculoskeletal conditions (injury) are apparent in all patients with RDs, accompanied by pain, underlying connective tissue disease and the consequent reduction in the function of musculoskeletal. Herein, the role of probiotics, curcumin, vitamins, Selenium, Zinc and n-3 fatty acids as immunonutrients is discussed.

10.
Appl Neuropsychol Adult ; : 1-8, 2023 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-38048313

RESUMO

Background: The aim of the present study was to investigate the association of prodromal PD (pPD) with trajectories of healthy aging, according to its latest definition by the WHO.Methods: In a sample of 1,226 older adults (704 women), PD diagnosis was reached through standard clinical research procedures. Probability of pPD was calculated according to the International Parkinson and Movement Disorder Society's research criteria for PD-free participants. A healthy aging metric was introduced using an item response theory approach (IRT) based on information from validated questionnaires assessing functionality. Four trajectories of healthy aging were created based on whether the healthy aging status of participants was above or below the median at baseline and follow up: High-High, High-Low, Low-High and Low-Low.Results: 34.3% belonged to the High-High group, 15.7% to the High-Low, 18.6% to the Low-High and 31.4% to the Low-Low group. Participants with possible/probable pPD were 78% less likely to belong in High-High trajectory of healthy aging as compared to those without pPD (OR = 0.22, 95%CI 0.06-0.79, p-value = 0,02).Conclusion: Our findings suggest an inverse association of pPD probability with healthy aging among older adults; Further research is needed to investigate the clinical implications of this association.

11.
Artigo em Inglês | MEDLINE | ID: mdl-36430066

RESUMO

The ideal lifestyle intervention to battle both obesity and diabetes is currently unknown. The aim of this pilot uncontrolled intervention trial was to assess the effect of a modified Mediterranean diet (MedDiet) on weight loss and glucoregulation among overweight/obese adults. Eleven men and women with overweight/obesity, aged 37 ± 12 years, participated in a free-living intervention until 10% weight loss was achieved. Participants followed an individualized MedDiet high in monounsaturated fat and protein with decreased carbohydrate and saturated fat contents. Physical activity and dietary intake were monitored with pedometers and food records, respectively. Upon weight loss achievement, anthropometric measurements, blood metabolic profiles and individual responses to oral glucose and mixed-meal tests were evaluated pre- and post-intervention. The results showed significant ameliorations in body fat, waist circumference and leptin levels (p < 0.01), with concomitant increases in adiponectin-leptin ratios (p < 0.001). Glucoregulation was significantly improved according to glucose and insulin responses, homeostatic model assessment of insulin resistance indices and postprandial insulin sensitivity indices (p < 0.05). In conclusion, the modified Mediterranean diet may induce significant improvements in body composition, adipocytokine profile and glucose metabolism in overweight/obese individuals. Notably, ameliorated glycemia and increased insulin sensitivity may be retained even at postprandial level, irrespective of the meal consumed.


Assuntos
Dieta Mediterrânea , Resistência à Insulina , Adulto , Feminino , Humanos , Masculino , Glicemia/metabolismo , Jejum , Insulina , Leptina , Obesidade/complicações , Sobrepeso/complicações , Projetos Piloto , Redução de Peso/fisiologia , Pessoa de Meia-Idade
12.
J Nutr Biochem ; 105: 108994, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35341916

RESUMO

The aim of the present study was to investigate the association of the inflammatory potential of diet with prodromal Parkinson's disease (pPD) probability and incidence among community-dwelling older individuals without clinical features of parkinsonism at baseline. The sample consisted of 1,030 participants 65 years old or older, drawn from a population-based cohort study of older adults in Greece (Hellenic Longitudinal Investigation of Aging and Diet - HELIAD). We calculated pPD probability, according to International Parkinson and Movement Disorder Society research criteria. Dietary Inflammatory Index (DII) was used to measure the dietary inflammatory potential, with higher index score reflecting a more pro-inflammatory diet. Associations of baseline DII with pPD probability cross-sectionally, and with possible/probable pPD incidence (pPD probability ≥30%) during the follow-up period, were examined via general linear models and generalized estimating equations, respectively. Cross-sectionally, one unit increase of DII score [DII (min, max) = -5.83, 6.01] was associated with 4.9% increased pPD probability [ß=0.049, 95%CI (0.025-0.090), p<0.001]. Prospectively, 62 participants developed pPD during 3.1±0.9 (mean±SD) years of follow-up. One unit increase in DII was associated with 20.3% increased risk for developing pPD [RR=1.203, 95%CI (1.070-1.351), p=0.002]. Participants in the highest tertile of DII score were 2.6 times more likely to develop pPD [ß=2.594, 95%CI (1.332-5.050), p=0.005], compared to those in the lowest tertile. More pro-inflammatory diet was related with higher pPD probability and pPD incidence (pPD probability ≥30%) in a community-dwelling older adult population. Further studies are needed to confirm these findings.


Assuntos
Doença de Parkinson , Idoso , Estudos de Coortes , Dieta/efeitos adversos , Humanos , Vida Independente , Inflamação/complicações , Doença de Parkinson/epidemiologia , Doença de Parkinson/etiologia
13.
J Gerontol A Biol Sci Med Sci ; 76(4): 622-629, 2021 03 31.
Artigo em Inglês | MEDLINE | ID: mdl-32761172

RESUMO

BACKGROUND: To investigate the association between frailty, Parkinson's disease (PD), and the probability of prodromal Parkinson's disease (prodromal PD) in Greek community-dwelling older individuals. METHODS: Parkinson's disease diagnosis was reached through standard clinical research procedures. Probability of prodromal PD was calculated according to the International Parkinson and Movement Disorder Society's research criteria for PD-free participants. Frailty was evaluated according to definitions of the phenotypic and multidomain approach. Logistic and linear regression models were performed to investigate associations between frailty (predictor) and the probability of prodromal PD, either continuous or dichotomous (≥30% probability score), or PD (outcome). RESULTS: Data from 1765 participants aged 65 and older were included in the present analysis. Parkinson's disease and prodromal PD prevalence were 1.9% and 3.0%, respectively. Compared to nonfrail participants, those who were frail, as identified with either the Fried frailty phenotype or Frailty Index had approximately 4 (odds ratio [OR] 4.09, 95% confidence interval [CI] 1.54-10.89) and 12 times (OR 12.16, 95% CI 5.46-27.09) higher odds of having a PD diagnosis, respectively. Moreover, compared to the nonfrail, frail participants as identified with either the Fried frailty phenotype or Frailty Index had 2.8 (OR 2.83, 95% CI 1.09-7.37) and 8.3 times (OR 8.39, 95% CI 4.56-15.42) higher odds of having possible/probable prodromal PD, respectively. CONCLUSIONS: Frailty status was associated with prodromal PD and PD, suggesting common characteristics or underlying mechanisms of these conditions. Although prospective studies are warranted, acknowledging the possible association of frailty, PD, and prodromal PD may improve their clinical management.


Assuntos
Envelhecimento , Fragilidade , Avaliação Geriátrica , Doença de Parkinson , Sintomas Prodrômicos , Idoso , Envelhecimento/fisiologia , Envelhecimento/psicologia , Feminino , Fragilidade/diagnóstico , Fragilidade/epidemiologia , Avaliação Geriátrica/métodos , Avaliação Geriátrica/estatística & dados numéricos , Grécia/epidemiologia , Humanos , Vida Independente/estatística & dados numéricos , Masculino , Exame Neurológico/métodos , Testes Neuropsicológicos , Doença de Parkinson/diagnóstico , Doença de Parkinson/epidemiologia , Doença de Parkinson/fisiopatologia , Doença de Parkinson/psicologia , Prevalência , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença , Avaliação de Sintomas
14.
Parkinsonism Relat Disord ; 86: 67-73, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33866230

RESUMO

INTRODUCTION: Some case series have suggested that psychotic features could occur even before the onset of motor symptoms of Parkinson's Disease (PD). Our aim was to investigate a possible association between psychotic symptoms and prodromal Parkinson's disease in a population-based cohort, the Hellenic Longitudinal Investigation of Aging and Diet study. METHODS: This cross-sectional study included participants aged ≥65 years without dementia or PD. We defined psychotic symptoms as the presence of at least one new hallucinatory or delusional feature, assessed with the Neuropsychiatric Inventory scale and the Columbia University Scale for Psychopathology in Alzheimer's Disease, exhibited only at follow-up and not present at baseline visit. We calculated the probability of prodromal PD (pPD) for every participant, according to the 2019 International Parkinson and Movement Disorders Society research criteria for prodromal PD. RESULTS: Participants who developed psychotic manifestations over a three-year follow up (20 of 914) had 1.3 times higher probability of pPD score (ß [95%CI]: 1.3 [0.9-1.5], p=0.006) compared to non-psychotic subjects. This association was driven mostly by depressive symptoms, constipation and subthreshold parkinsonism (p<0.05). CONCLUSION: Our data indicate that emerging psychotic features evolve in parallel with the probability of pPD. This is the first study that provides evidence for the presence of psychotic experiences in pPD. The association detected needs to be confirmed in longitudinal studies.


Assuntos
Doença de Parkinson/complicações , Doença de Parkinson/psicologia , Sintomas Prodrômicos , Transtornos Psicóticos/etiologia , Idoso , Estudos Transversais , Feminino , Humanos , Masculino
15.
Front Mol Neurosci ; 14: 739571, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34992521

RESUMO

Several studies have investigated the association of the Parkinson's disease (PD) polygenic risk score (PRS) with several aspects of well-established PD. We sought to evaluate the association of PRS with the prodromal stage of PD. We calculated PRS in a longitudinal sample (n = 1120) of community dwelling individuals ≥ 65 years from the HELIAD (The Hellenic Longitudinal Investigation of Aging and Diet) study in order to evaluate the association of this score with the probability of prodromal PD or any of the established risk and prodromal markers in MDS research criteria, using regression multi-adjusted models. Increases in PRS estimated from GWAS summary statistics' ninety top SNPS with p < 5 × 10-8 was associated with increased odds of having probable/possible prodromal PD (i.e., ≥ 30% probability, OR = 1.033, 95%CI: 1.009-1.057 p = 0.006). From the prodromal PD risk markers, significant association was found between PRS and global cognitive deficit exclusively (p = 0.003). To our knowledge, our study is the first population based study investigating the association between PRS scores and prodromal markers of Parkinson's disease. Our results suggest a strong relationship between the accumulation of many common genetic variants, as measured by PRS, and cognitive deficits.

16.
Curr Opin Clin Nutr Metab Care ; 13(6): 608-17, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20829686

RESUMO

PURPOSE OF REVIEW: To present the effect of negative energy balance on postprandial triacylglycerol concentrations (pTAG), an independent risk factor for the development of cardiovascular disease. RECENT FINDINGS: Aerobic exercise reduces pTAG; however, recent findings confirm that this effect is only evident with an accompanying energy deficit. Moreover, a recent study showed that acute diet-induced energy deficit also reduces pTAG. The extent of energy deficit required to significantly attenuate pTAG depends on the type of given meal, the type of deficit (aerobic/resistance exercise, diet, or combination of diet and exercise), and patients' health status. Apart from the acute effects, prolonged energy deficit leading to moderate weight loss attenuates pTAG, when it is combined with other known hypotriacylglycerolemic agents, such as carbohydrate restriction. SUMMARY: For healthy population, it seems that it is up to patient's preference and ability which type of energy deficit will follow to attenuate pTAG; an energy deficit of approximately 30 kJ/kg of body mass is required; for resistance exercise a smaller deficit is probably sufficient. More studies are needed to investigate dose-response/plateau effects, the effects of energy deficit-energy surplus every other day, and the threshold of energy deficit-weight loss in diabetics and other high-risk populations. Finally, investigation of the underlying mechanisms may be clinicall helpful in individualizing the appropriate intervention.


Assuntos
Ingestão de Energia , Metabolismo Energético , Exercício Físico/fisiologia , Triglicerídeos/sangue , Dieta , Humanos , Período Pós-Prandial , Triglicerídeos/metabolismo
17.
J Phys Act Health ; 17(2): 225-229, 2020 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-31923902

RESUMO

BACKGROUND: Although plenty of evidence indicates that weight loss maintainers are highly physically active, studies focusing on the sex-specific differences in activity levels between maintainers and regainers are scarce. The authors aimed to investigate sex-specific differences in activity patterns in a cohort of Mediterranean maintainers and regainers. METHODS: Sample includes 756 participants of the MedWeight registry (60.5% women), aged 18-65 years, who lost ≥10% of their initial weight, and either maintained their loss for ≥12 months or regained it. Participants completed a series of questionnaires, including demographics and weight history. Activity levels were evaluated with the International Physical Activity Questionnaire-short version. RESULTS: Maintainers of both sexes were, in total, more active than their same-sex regainers. When specific activities were considered, women maintainers spent more time walking than regainers (Padjusted = .02), whereas men maintainers spent more time in vigorous activities (Padjusted = .001) and walking than regainers (Padjusted = .001). Modest increments in activity of sex-relevant intensity were associated with increased odds for maintenance. CONCLUSIONS: Maintainers attained a more active lifestyle than their same-sex regainers, involving more walking for both sexes and more vigorous activities for men. The detected differences, according to activity intensity, support that activity patterns associated with successful weight loss are distinguishable between sexes.


Assuntos
Peso Corporal/fisiologia , Exercício Físico/fisiologia , Estilo de Vida , Obesidade/terapia , Redução de Peso/fisiologia , Adolescente , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Adulto Jovem
18.
Nutrients ; 12(4)2020 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-32260197

RESUMO

Research on hyponatremia during mountain marathons is scarce. The present study aimed to investigate the prevalence of exercise-associated hyponatremia during a 44-km trail running race that reached an altitude of 2780 m (Olympus Marathon). Sixty-two runners (five women) who completed the race participated in the study (age: 34.4 ± 8.6 years; height: 1.77 ± 0.06 m; and weight: 75.3 ± 10.0 kg). Anthropometric characteristics, blood, and urine samples were collected pre- and post-race. Food and fluid intake were recorded at each checkpoint. Due to race regulations, the runners could not carry any additional food and fluids besides the ones provided at specific checkpoints. Five runners (8%) exhibited asymptomatic hyponatremia (serum sodium <135 mmol∙L-1). Serum sodium in the hyponatremic runners decreased from 138.4 ± 0.9 (pre) to 131.4 ± 5.0 mmol∙L-1 (post), p < 0.05. Plasma osmolality increased only in the eunatremic runners (pre: 290 ± 3; post: 295 ± 6 mmol∙kg-1; p < 0.05). Plasma volume decreased more in the hyponatremic compared to eunatremic runners (-4.4 ± 2.0 vs. -3.2 ± 1.4%, p < 0.05). Lastly, dietary sodium intake was lower in the hyponatremic runners compared to eunatremic (789 ± 813 vs. 906 ± 672 mg; p < 0.05). The incidence of hyponatremia among the athletes was relatively low, possibly due to race conditions.


Assuntos
Exercício Físico , Hiponatremia/etiologia , Corrida de Maratona , Resistência Física , Adulto , Atletas , Ingestão de Líquidos , Feminino , Humanos , Masculino , Estado Nutricional , Sódio/sangue
19.
Br J Nutr ; 101(3): 408-16, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18570693

RESUMO

A single bout of prolonged, moderate-intensity endurance exercise lowers fasting and postprandial TAG concentrations the next day. However, the TAG-lowering effect of exercise is dose-dependent and does not manifest after light exercise of low energy cost ( < 2 MJ). We aimed to investigate whether superimposing mild energy intake restriction to such exercise, in order to augment total energy deficit, potentiates the hypotriacylglycerolaemic effect. Eight healthy, sedentary, premenopausal women (age 27.1 (sem 1.3) years; BMI 21.8 (sem 0.9) kg/m2) performed two oral fat tolerance tests in the morning on two different occasions: once after a single bout of light exercise (100 min at 30 % of peak oxygen consumption; net energy expenditure 1.04 (sem 0.01) MJ) coupled with mild energy intake restriction (1.39 (sem 0.22) MJ) on the preceding day, and once after resting coupled with isoenergetic feeding on the preceding day (control). Fasting plasma TAG, TAG in the TAG-rich lipoproteins (TRL-TAG) and serum insulin concentrations were 18, 34 and 30 % lower, respectively, after exercise plus diet compared with the control trial (P < 0.05). Postprandial concentrations of plasma TAG and TRL-TAG were 19 and 27 % lower after exercise plus diet compared with the control condition (P < 0.01), whereas postprandial insulin concentrations were not different. It is concluded that a combination of light exercise along with mild hypoenergetic diet may be a practical and feasible intervention to attenuate fasting and postprandial triacylglycerolaemia, especially for people who cannot exercise for prolonged periods of time at moderate-to-high intensities, such as many sedentary individuals.


Assuntos
Restrição Calórica , Metabolismo Energético/fisiologia , Exercício Físico/fisiologia , Jejum/sangue , Triglicerídeos/sangue , Adulto , Análise de Variância , Composição Corporal , Calorimetria Indireta , Feminino , Fase Folicular/sangue , Humanos , Período Pós-Prandial , Estatísticas não Paramétricas , Caminhada
20.
Int Health ; 11(1): 30-35, 2019 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-30053024

RESUMO

Background: The health of asylum seekers is of cardinal importance for the future health of Europe. The aim of the present cross-sectional study was to assess malnutrition prevalence among refugee children living in reception areas in northern Greece. Methods: A total of 192 refugee children (1-18 y old), inhabitants of the refugee reception centres in Drama and Kavala, were evaluated for acute and chronic malnutrition according to the WHO growth standards and charts. Results: In the total sample, 13.0% of the participants had at least one form of malnutrition, the prevalence of underweight was 7.8% and stunting affected 7.3% of the children. Moreover, a greater proportion of adolescent girls from the Drama centre (38.5%) demonstrated at least one form of malnutrition compared with the children in Kavala (p=0.046). Girls demonstrated an increased prevalence of malnutrition compared with boys, while children <5 y of age appeared more vulnerable. Conclusions: The present data underscore the necessity for malnutrition screening among refugees in order to have an early assessment of their nutritional status and address the direct and root causes of this substantial problem.


Assuntos
Transtornos da Nutrição Infantil/epidemiologia , Vigilância da População , Refugiados/estatística & dados numéricos , Características de Residência/estatística & dados numéricos , Adolescente , Criança , Pré-Escolar , Estudos Transversais , Feminino , Grécia/epidemiologia , Humanos , Lactente , Masculino , Projetos Piloto , Prevalência
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