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1.
Neuroepidemiology ; 58(1): 57-63, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38128504

RESUMO

Multiple sclerosis (MS) is the most common chronic inflammatory, demyelinating, and neurodegenerative disease of the central nervous system in young adults, representing the leading cause of nontraumatic disability in this population. The rising prevalence of MS worldwide makes it critical to recognize the absolute number of patients with MS, demanding the execution of a sustainable healthcare policy. In Portugal, only six studies evaluating MS rates were published, disclosing a prevalence of 64 cases per 100,000 persons and an incidence of 3.1 cases per 100,000 persons/year, but the mortality rates have not been reported. Thus, this observational, cross-sectional study aimed to assess MS prevalence, incidence, and mortality in the city of Coimbra, a region in the center of Portugal. Patients who fulfilled McDonald's Diagnosis Criteria (2017) for MS were recruited. Inclusion criteria were defined according to prevalence, incidence, and mortality studies. The baseline demographic and clinical characterization of the prevalence study population was performed. The MS prevalence rate in Coimbra was 143.45 cases per 100,000 inhabitants. Between 2018 and 2021, the cumulative incidence was 8.52 new cases per 100,000 persons/year. The mortality rate between 2018 and 2021 was 2.84 deaths per 100,000 inhabitants. MS prevalence and incidence in Coimbra are higher than reported in previous similar studies and comparable to Europe's mean prevalence and incidence.


Assuntos
Esclerose Múltipla , Doenças Neurodegenerativas , Adulto Jovem , Humanos , Esclerose Múltipla/epidemiologia , Incidência , Prevalência , Portugal/epidemiologia , Estudos Transversais
2.
Scand J Med Sci Sports ; 33(10): 2058-2067, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37265077

RESUMO

This investigation aimed to describe the current physical fitness (PF) status of Portuguese youth, compare secular trends from 2008 and 2018, and establish updated age- and sex-specific percentile values for distinct PF tests. In 2008 and 2018, 22 048 and 8960 children and adolescents (10-18 years) were included in two national cross-sectional investigations. PF was evaluated using the FITESCOLA® battery tests and the handgrip strength test. Independent sample t-tests and chi-squared tests were used to model the results. Weight smoothed percentile values were calculated using Cole's Lambda-Mu-Sigma (LMS) method. All analyses were weighted according to age, sex, and geographic region. In 2018, boys surpassed girls in the 20-m shuttle run, curl-ups, push-ups, standing long, and vertical jump tests, while girls performed better in the sit-and-reach (p < 0.05). The percentage of boys and girls meeting the healthy zone in the 20-min shuttle run test did not differ between 2008 and 2018 (p ≥ 0.05). In boys, a higher percentage fell in the healthy zone for the curl-up and push-up tests in 2018 compared to 2008 (85.8% vs. 83.4%, and 57.8% vs. 53.8%; p < 0.05). Girls improved their flexibility component (sit-and-reach test), with a higher percentage meeting the healthy zone in 2018 (32.6% vs. 36.9%; p < 0.05); an opposite trend was seen for boys (65.5% vs. 50.1%; p < 0.05). The present investigation provides new and updated PF percentile curves for Portuguese youth, which can be used as a general overview of the current PF state among the Portuguese young population.


Assuntos
Força da Mão , Aptidão Física , Masculino , Criança , Feminino , Humanos , Adolescente , Estudos Transversais , Portugal , Exercício Físico
3.
J Aging Phys Act ; 31(3): 391-399, 2023 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-36307098

RESUMO

In a randomized crossover trial, we examined the effects of interrupting sedentary behavior on glycemic control in trained older adults, before and after 2 weeks of detraining. Fourteen participants (65-90 years old) completed two 7-hr conditions before and after 2 weeks of detraining: (a) uninterrupted sitting (SIT) and (b) sitting plus 2 min of moderate-intensity activity every 30 min (INT). Both before and after detraining, no differences were observed for 7-hr glucose area under the curve (7 hr AUC) and mean glucose between sitting plus 2 min of moderate-intensity activity and uninterrupted sitting conditions. After detraining and for the SIT condition, higher values of 7-hr AUC (p = .014) and mean glucose (p = .015) were observed, indicating worsened glycemic control. No changes were observed in INT condition between both time points. Frequent interruptions in sedentary behavior had no effect on glycemic control, prior to or after detraining. Even so, older adults experiencing a short-term detraining period should avoid prolonged bouts of sedentary behavior that may jeopardize their glycemic control.


Assuntos
Glicemia , Comportamento Sedentário , Humanos , Idoso , Idoso de 80 Anos ou mais , Estudos Cross-Over , Período Pós-Prandial , Glucose
4.
Eur J Neurol ; 29(11): 3460-3465, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35837810

RESUMO

BACKGROUND AND PURPOSE: Acute ischemic stroke is one of the leading causes of disability and mortality globally, with increasing incidence in Africa, as the continent is already burdened with infectious diseases. Rapid diagnosis and efficient treatment are crucial, as even a slight delay in reperfusing the brain significantly affects the recovery outcome. Neuroimaging is vital for optimal care and thrombolytic or endovascular therapy in specialized stroke care units. This review aims to discuss the burden of acute ischemic stroke in Africa and how health care systems have tried to reduce the incidence and improve outcomes for the disease. METHODS: Data were collected through the online databases PubMed, Ovid MEDLINE, ScienceDirect, and Embase. All articles related to acute ischemic stroke in Africa were considered. RESULTS: The medical care for acute ischemic stroke in Africa is far from optimal, with little adherence to recommended protocols. There is a lack of public awareness of the disease, imaging infrastructure, personnel, stroke care units, and recovery facilities due to poor funding. Poor knowledge of stroke signs and symptoms results in delay in treatment and poor prognosis. CONCLUSIONS: We urge African leaders and private entities to invest in stroke care by building appropriate infrastructures, providing medical equipment, and implementing guidelines and sustainable follow-up systems. Telehealth is a suggested strategy to mitigate the scarcity of health personnel, and international and national efforts to increase treatment affordability should be doubled. Further extensive research on the impact of acute ischemic stroke on the African population is encouraged.


Assuntos
AVC Isquêmico , Acidente Vascular Cerebral , África/epidemiologia , Fibrinolíticos , Humanos , Assistência ao Paciente , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/epidemiologia , Acidente Vascular Cerebral/terapia , Terapia Trombolítica
5.
FEMS Yeast Res ; 21(4)2021 06 04.
Artigo em Inglês | MEDLINE | ID: mdl-34021562

RESUMO

Candida albicans typically resides in the human gastrointestinal tract and mucosal membranes as a commensal organism. To adapt and cope with the host immune system, it has evolved a variety of mechanisms of adaptation such as stress-induced mutagenesis and epigenetic regulation. Niche-specific patterns of gene expression also allow the fungus to fine-tune its response to specific microenvironments in the host and switch from harmless commensal to invasive pathogen. Proteome plasticity produced by CUG ambiguity, on the other hand is emerging as a new layer of complexity in C. albicans adaptation, pathogenesis, and drug resistance. Such proteome plasticity is the result of a genetic code alteration where the leucine CUG codon is translated mainly as serine (97%), but maintains some level of leucine (3%) assignment. In this review, we dissect the link between C. albicans non-standard CUG translation, proteome plasticity, host adaptation and pathogenesis. We discuss published work showing how this pathogen uses the fidelity of protein synthesis to spawn novel virulence traits.


Assuntos
Candida albicans/genética , Candida albicans/patogenicidade , Biossíntese de Proteínas , Virulência/genética , Adaptação Fisiológica , Códon , Farmacorresistência Fúngica , Epigênese Genética , Proteoma
6.
Neurol Sci ; 42(3): 1039-1043, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32719903

RESUMO

BACKGROUND: Fingolimod is an oral daily treatment for relapsing remitting multiple sclerosis (RRMS). A decrease in lymphocytes count is a common side effect, whereby clinicians occasionally propose a reduced dose rather than its discontinuation. However, current data on the effectiveness of these regimens are scarce and contradictory. Our objective was to investigate if the fingolimod effectiveness is maintained with reduction in dosing frequency. METHODS: Retrospective and observational study of RRMS patients taking fingolimod-nondaily (FTY-ND) for at least 6 months. Propensity score-based matching was performed to select patients taking daily dose (FTY-ED) with comparable baseline characteristics: age, sex, disease duration, annualized relapse rate (ARR), and expanded disability status scale (EDSS). Afterwards, clinical and laboratorial assessment was evaluated in both groups. RESULTS: Thirty-six patients were included in each group (FTY-ED vs. FTY-ND). Decrease in lymphocytes count was the main reason for switching to FTY-ND (88.9%). Previous treatment with natalizumab was inversely associated with risk of reducing dose (OR 0.253, 95%CI = 0.08-0.807, p = 0.016). There were no significant differences in clinical disease activity between patients FTY-ED vs. FTY-ND: mean ARR 0.4 vs. 0.3 (p = 0.247), median EDSS 2.0 vs. 2.0 (p = 0.687), and proportion of patients with EDSS increase 8.3% vs. 13.9% (p = 0.453). FTY-ND was overall well tolerated and was associated with an increase in the mean lymphocytes count (362 ± 103 cells/mm3 to 541 ± 183 cells/mm3, p < 0.001). CONCLUSION: These data suggest that the effectiveness of FTY is maintained despite the reduction of the dose, minimizing the most common adverse events. These findings warrant further confirmation, ideally with randomized clinical trials.


Assuntos
Esclerose Múltipla Recidivante-Remitente , Esclerose Múltipla , Cloridrato de Fingolimode/uso terapêutico , Humanos , Imunossupressores/efeitos adversos , Esclerose Múltipla Recidivante-Remitente/tratamento farmacológico , Natalizumab , Portugal , Estudos Retrospectivos , Resultado do Tratamento
7.
Eur J Appl Physiol ; 121(3): 871-879, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33389140

RESUMO

PURPOSE: Exercise is beneficial to type-2 diabetes-mellitus (T2DM), and there is evidence showing that one of those benefits include a higher expression of brain-derived neurotrophic factor (BDNF), which has been implicated in improving fat oxidation and cognitive development. The deleterious effect of prolonged sedentary time (ST) on BDNF levels has never been examined in patients with T2DM. Our goal was to analyse the associations for sedentary patterns [i.e. breaks in ST per sedentary hour (BST-ST) and bouts of sedentary time (BSB) of different length] with BDNF in patients with T2DM, independent of moderate-to-vigorous physical activity (MVPA) and cardiorespiratory fitness (CRF). METHODS: Sample included 80 patients (38 women) with T2DM (58.3 ± 7.8 years). ST and MVPA were assessed by accelerometry (ActiGraph, GT3X + model), BDNF by blood collection and plasma quantification using commercial enzyme-linked immunosorbent assay kits, and CRF was determined using a Bruce protocol to exhaustion, on a motorized treadmill. RESULTS: Positive associations for BST-ST (ß = 0.155; p = 0.007) with BDNF, and negative associations for BSB longer than 15 min with BDNF were found (ß = - 0.118; p = 0.049). Neither MVPA nor cardiorespiratory fitness eliminated the associations for BST-ST with BDNF, but MVPA eradicated the associations between BSB > 15 min and BDNF. CONCLUSIONS: Our findings suggest that interrupting ST and especially avoiding longer sedentary periods (> 15 min) may be beneficial for BDNF plasma abundance that may influence metabolic and cognitive functioning of patients with T2DM, especially for the ones presenting lower MVPA levels. TRIAL REGISTRATION: May 5, 2017, ClinicalTrials.govID:NCT03144505.


Assuntos
Fator Neurotrófico Derivado do Encéfalo/metabolismo , Diabetes Mellitus Tipo 2/metabolismo , Comportamento Sedentário , Adulto , Idoso , Aptidão Cardiorrespiratória , Estudos Transversais , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/patologia , Exercício Físico/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Portugal/epidemiologia , Ensaios Clínicos Controlados Aleatórios como Assunto
8.
Eur J Public Health ; 31(5): 1048-1053, 2021 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-33792667

RESUMO

BACKGROUND: As the implementation of sensor-based assessment for sedentary time (ST) and physical activity (PA) has practical limitations when applied on a large-scale, most studies rely on subjective data. We aimed to examine the criterion validity of a single-item question to assess daily breaks in ST and other PA-related outcomes for the first time using sensor-based data as the criterion. METHODS: In a sample of 858 adults, breaks in ST and other PA-related parameters were assessed through sensor-based accelerometry and subjective data, which included a comprehensive questionnaire with a specific question ('During the day, do you usually sit for a long time in a row or interrupt frequently?') with a three-level closed answer. The Spearman's rank correlation coefficient was used to determine the agreement between the single-item question and sensor-based data. RESULTS: Positive correlations were found for self-reported breaks in ST with sensor-based breaks in ST in both women (ρ=0.37; 95% CI=0.29-0.44) and men (ρ=0.15; 95% CI=0.04-0.26). Self-reported breaks in ST were inversely correlated with ST in women (ρ =-0.33; 95% CI=-0.40 to 0.25). For both sexes, self-reported breaks in ST showed a positive correlation with light-intensity PA (ρ=0.39; 95% CI=0.31-0.46 women; ρ=0.13; 95% CI=0.02-0.24 men), however, positive correlations between self-reported breaks in ST and moderate-to-vigorous PA (ρ=0.13; 95% CI=0.02-0.24) were found only in men. CONCLUSIONS: Our single-item question can be used as an indication for ranking people's breaks in ST during the waking day, although acknowledging that some misclassification will occur, especially in men. There must be an effort to include this question in future national and international surveys to replicate these findings.


Assuntos
Acelerometria , Comportamento Sedentário , Exercício Físico , Humanos , Autorrelato , Inquéritos e Questionários
9.
J Sports Sci ; 39(24): 2821-2828, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34378495

RESUMO

Investigation into correlates across all levels of the socio-ecological model predictive of objectively measured physical activity has rarely been assessed in adults. While considering a diversity of correlates, we determined which correlates best predict sensor-based moderate-to-vigorous physical activity (MVPA) and sedentary-time (ST) in adults. A Chi-squared Automatic Interaction Detection algorithm was used to hierarchize the correlates associated with high ST (≥66.6thpercentile) and sufficient MVPA (≥150 min/week) in 865 adults. The main correlate predictive of being active was currently partaking in sport/exercise. The following relevant correlates were being male for the exercisers and having trees in the neighbourhood for the non-exercisers. The final correlate to boost male exercisers' MVPA was having lots of shops in the neighbourhood and not having television in the bedroom for women. The primary correlate for high ST was job activity level, with individuals having highly active jobs being less likely to exhibit high levels of ST; being single, male, and a former athlete also increased the chances of being highly sedentary. To increase adults' MVPA, promotion of sport participation, neighbourhood landscape planning, shop availability, as well as limiting television in the bedroom must be prioritized. For counteracting ST, increasing workplace activity level is warranted.


Assuntos
Comportamento Sedentário , Esportes , Exercício Físico , Humanos , Masculino
10.
Expert Rev Proteomics ; 17(7-8): 595-607, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33016158

RESUMO

INTRODUCTION: Proteins are crucial for every cellular activity and unraveling their sequence and structure is a crucial step to fully understand their biology. Early methods of protein sequencing were mainly based on the use of enzymatic or chemical degradation of peptide chains. With the completion of the human genome project and with the expansion of the information available for each protein, various databases containing this sequence information were formed. AREAS COVERED: De novo protein sequencing, shotgun proteomics and other mass-spectrometric techniques, along with the various software are currently available for proteogenomic analysis. Emphasis is placed on the methods for de novo sequencing, together with potential and shortcomings using databases for interpretation of protein sequence data. EXPERT OPINION: As mass-spectrometry sequencing performance is improving with better software and hardware optimizations, combined with user-friendly interfaces, de-novo protein sequencing becomes imperative in shotgun proteomic studies. Issues regarding unknown or mutated peptide sequences, as well as, unexpected post-translational modifications (PTMs) and their identification through false discovery rate searches using the target/decoy strategy need to be addressed. Ideally, it should become integrated in standard proteomic workflows as an add-on to conventional database search engines, which then would be able to provide improved identification.


Assuntos
Processamento de Proteína Pós-Traducional/genética , Proteínas/isolamento & purificação , Proteômica/tendências , Análise de Sequência de Proteína/tendências , Sequência de Aminoácidos/genética , Biologia Computacional , Humanos , Proteínas/genética , Software , Espectrometria de Massas em Tandem
11.
Cardiovasc Diabetol ; 19(1): 169, 2020 10 07.
Artigo em Inglês | MEDLINE | ID: mdl-33028418

RESUMO

BACKGROUND: Exercise is a well-accepted strategy to improve lipid and inflammatory profile in individuals with type 2 diabetes (T2DM). However, the exercise intensity having the most benefits on lipids and inflammatory markers in patients with T2DM remains unclear. We aimed to analyse the impact of a 1-year combined high-intensity interval training (HIIT) with resistance training (RT), and a moderate continuous training (MCT) with RT on inflammatory and lipid profile in individuals with T2DM. METHODS: Individuals with T2DM (n = 80, aged 59 years) performed a 1-year randomized controlled trial and were randomized into three groups (control, n = 27; HIIT with RT, n = 25; MCT with RT, n = 28). Exercise sessions were supervised with a frequency of 3 days per week. Inflammatory and lipid profiles were measured at baseline and at 1-year follow-up. Changes in inflammatory and lipid markers were assessed using generalized estimating equations. RESULTS: After adjusting for sex, age and baseline moderate-to-vigorous physical activity (MVPA), we observed a time-by-group interaction for Interleukin-6 (IL-6) in both the MCT with RT (ß = - 0.70, p = 0.034) and HIIT with RT (ß = - 0.62, p = 0.049) groups, whereas, only the HIIT with RT group improved total cholesterol (ß = - 0.03, p = 0.045) and LDL-C (ß = - 0.03, p = 0.034), when compared to control. No effect was observed for C-reactive protein (CRP), cortisol, tumour necrosis factor-α (TNF-α), soluble form of the haptoglobin-hemoglobin receptor CD163 (sCD163), triglycerides and HDL-C in both groups (p > 0.05). CONCLUSIONS: Favorable adaptations on IL-6 were observed in both the HIIT and MCT combined with RT groups following a long-term 1-year exercise intervention in individuals with T2DM. However, only the HIIT with RT prevented further derangement of total cholesterol and LDL-C, when compared to the control group. Therefore, in order to encourage exercise participation and improve inflammatory profile, either exercise protocols may be prescribed, however, HIIT with RT may have further benefits on the lipid profile. Trial registration Clinicaltrials.gov ID: NCT03144505.


Assuntos
Colesterol/sangue , Diabetes Mellitus Tipo 2/terapia , Treinamento Intervalado de Alta Intensidade , Mediadores da Inflamação/sangue , Interleucina-6/sangue , Lipídeos/sangue , Treinamento Resistido , Adulto , Idoso , Biomarcadores/sangue , LDL-Colesterol/sangue , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Portugal , Fatores de Tempo , Resultado do Tratamento
12.
Int Microbiol ; 23(1): 23-29, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30875035

RESUMO

In 1993, Brewster and Gustin described the existence of a kinase whose activity was essential for Saccharomyces cerevisiae to grow in environments with high osmolarity. This led to the discovery of the HOG pathway, a MAP kinase (MAPK) pathway that has been revealed to be crucial to respond to a wide range of stress conditions frequently encountered by fungi in their common habitats. MAPK signaling is initiated at the plasma membrane, where triggering stimuli lead to a phosphorylation cascade that ultimately activates transcription factors to ensure an appropriate adaptive response. In pathogenic fungi, the HOG pathway gains special significance as it is involved in traits related to pathogenicity; these include biofilm formation, adhesion to surfaces, and morphogenetic and epigenetic transitions. It also plays a role in controlling both the pathogen and the commensal state program. Understanding the signals leading to its activation, the elements of the pathways and the targets of the pathway are therefore of primary importance in the design of novel antifungals.


Assuntos
Candida albicans/fisiologia , Candidíase/microbiologia , Proteínas Fúngicas/metabolismo , Proteínas Quinases Ativadas por Mitógeno/metabolismo , Concentração Osmolar , Transdução de Sinais , Adaptação Fisiológica , Candida albicans/citologia , Parede Celular/metabolismo , Interações Hospedeiro-Patógeno , Fosforilação , Estresse Fisiológico
13.
BMC Neurol ; 20(1): 195, 2020 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-32429866

RESUMO

BACKGROUND: The prevalence of Multiple Sclerosis (MS) has been increasing worldwide and the north-south gradient of prevalence may be disappearing in the Northern hemisphere. The few previous prevalence studies performed in Portugal have reported a lower prevalence than the average for Western Europe. The aim of this study is to estimate the prevalence of MS in the Entre Douro e Vouga region, in Northern Portugal. METHODS: Multiple overlapping sources were used to ascertain all cases from the reference population: records from hospitals in the region and neighbouring regions; diagnostic databases of primary care physicians; and applications for disability benefits. The prevalence date was set at 1 January 2014. The reference population was 274,859 inhabitants. Patients' neurologists were contacted to retrieve clinical information and confirm the diagnosis based. RESULTS: A total of 177 patients were identified after eliminating duplicates from different sources. The female to male ratio was 1.9 and the mean age at disease onset was 33.5 (standard deviation: 10.3). Clinically isolated syndrome accounted for 9.0% of patients, relapsing remitting for 58.8%, secondary progressive for 20.3% and primary progressive for 11.8%. The prevalence was estimated in 64.4 patients per 100,000 (95% confidence interval: 54.9;73.9). CONCLUSIONS: In this study we report a higher point prevalence of MS than had been previously described in Portugal, but still far from the higher values recently reported in other Southern European countries.


Assuntos
Esclerose Múltipla/epidemiologia , Adulto , Bases de Dados Factuais , Pessoas com Deficiência , Feminino , Hospitais , Humanos , Masculino , Pessoa de Meia-Idade , Portugal/epidemiologia , Prevalência
14.
Cardiovasc Diabetol ; 18(1): 34, 2019 03 18.
Artigo em Inglês | MEDLINE | ID: mdl-30885194

RESUMO

BACKGROUND: Exercise, when performed on a regular basis, is a well-accepted strategy to improve vascular function in patients with type 2 diabetes. However, the exercise intensity that yields maximal adaptations on structural and functional indices in patients with type 2 diabetes remains uncertain. Our objective was to analyze the impact of a 1-year randomized controlled trial of combined high-intensity interval training (HIIT) with resistance training (RT) vs. a combined moderate continuous training (MCT) with RT on structural and functional arterial indices in patients with type 2 diabetes. METHODS: Patients with type 2 diabetes (n = 80) were randomized into an exercise intervention with three groups: control, combined HIIT with RT and combined MCT with RT. The 1-year intervention had 3 weekly exercise sessions. High-resolution ultrasonography of the common carotid artery and central and peripheral applanation tonometry were used to assess the changes in structural and functional arterial indices. Generalized estimating equations were used to model the corresponding outcomes. RESULTS: After adjusting the models for sex, baseline moderate-to-vigorous physical activity, and mean arterial pressure changes, while using the intention-to-treat analysis, a significant interaction was observed on the carotid intima-media thickness (cIMT) for both the MCT (ß = - 4.25, p < 0.01) and HIIT group (ß = - 3.61, p < 0.01). However, only the HIIT observed favorable changes from baseline to 1-year on peripheral arterial stiffness indices such as carotid radial arterial pulse wave velocity (ß = - 0.10, p = 0.044), carotid to distal posterior tibial artery pulse wave velocity (ß = - 0.14, p < 0.01), and on the distensibility coefficient (ß = - 0.00, p < 0.01). No effect was found for hemodynamic variables after the intervention. CONCLUSIONS: Following a 1-year intervention in patients with type 2 diabetes, both the MCT and HIIT group reduced their cIMT, whereas only the HIIT group improved their peripheral arterial stiffness indices and distensibility coefficient. Taken together, HIIT may be a meaningful tool to improve long-term vascular complications in type 2 diabetes. Trial registration clinicaltrials.gov ID: NCT03144505.


Assuntos
Artéria Braquial/fisiopatologia , Artérias Carótidas/fisiopatologia , Diabetes Mellitus Tipo 2/terapia , Angiopatias Diabéticas/terapia , Hemodinâmica , Treinamento Intervalado de Alta Intensidade , Treinamento Resistido , Anti-Hipertensivos/uso terapêutico , Pressão Arterial , Artéria Braquial/diagnóstico por imagem , Artérias Carótidas/diagnóstico por imagem , Espessura Intima-Media Carotídea , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/fisiopatologia , Angiopatias Diabéticas/diagnóstico por imagem , Angiopatias Diabéticas/fisiopatologia , Humanos , Hipoglicemiantes/uso terapêutico , Manometria , Portugal , Análise de Onda de Pulso , Fatores de Tempo , Resultado do Tratamento , Rigidez Vascular
16.
Electrophoresis ; 2018 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-29518261

RESUMO

Lipids are gaining relevance over the last 20 years, as our knowledge about their role has changed from merely energy/structural molecules to compounds also involved in several biological processes. This led to the creation in 2003 of a new emerging research field: lipidomics. In particular the phospholipids have pharmacological/food applications, participate in cell signalling/homeostatic pathways while their analysis faces some challenges. Their fractionation/purification is, in fact, especially difficult, as they are amphiphilic compounds. Moreover, it usually involves SPE or TLC procedures requiring specific materials hampering their suitableness for routine analysis. Finally, they can interfere with the ionization of other molecules during mass spectrometry analysis. Thus, simple high-throughput reliable methods to selectively isolate these compounds based on the difference between chemical characteristics of lipids would represent valuable tools for their study besides that of other compounds. The current review work aims to describe the state-of-the-art related to the extraction of phospholipids using liquid-liquid methods for their targeted isolation. The technological and biological importance of these compounds and ion suppression phenomena are also reviewed. Methods by precipitation with acetone or isolation using methanol seem to be suitable for selective isolation of phospholipids in both biological and food samples.

17.
Eur Neurol ; 80(1-2): 63-67, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30227441

RESUMO

We performed a retrospective study with the aim of investigating the association between blood pressure (BP) variability in the first 24 h after ischemic stroke and functional outcome, regarding arterial recanalization status. A total of 674 patients diagnosed with acute stroke and treated with revascularization therapies were enrolled. Systolic and diastolic BP values of the first 24 h after stroke were collected and their variation quantified through standard deviation. Recanalization state was evaluated at 6 h and clinical outcome at 3 months was assessed by modified Rankin Scale. In multivariate analyses systolic BP variability in the first 24 h post-stroke showed an association with 3 months clinical outcome in the whole population and non-recanalyzed patients. In recanalyzed patients, BP variability did not show a significant association with functional outcome.


Assuntos
Pressão Sanguínea/fisiologia , Procedimentos Endovasculares/métodos , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/terapia , Resultado do Tratamento , Idoso , Idoso de 80 Anos ou mais , Isquemia Encefálica/fisiopatologia , Isquemia Encefálica/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Recuperação de Função Fisiológica , Estudos Retrospectivos
18.
J Sports Sci ; 36(24): 2809-2817, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29745805

RESUMO

We aimed to describe ST and its patterns on a national level. A hip-worn accelerometer (ActiGraph GT1M) was used to collect data during waking hours from 4575 Portuguese' participants from 2007-2009 (2683 females) aged 10-102 years old. Data was presented by sex, in 5-years age intervals, and by adolescents (n=2833), adults (n=1122), and older adults (n=620). Lambda-mu-sigma (LMS) smoothed percentile curves were estimated. Girls, women, and older women spent 61, 57, and 64% of wear time in ST, respectively. In males, ST represented 57, 60, and 62% of wear time respectively for boys, men, and older men. Comparing to other age groups, older adults spent a larger amount of ST in bouts ≥30-min (women: 33%, men: 39% of total ST). The number of breaks/ST hour were: 10.6 in girls, 11.7 in women, and 9.6 in older women. In males, the number of breaks/ST hour were: 11.2, 10.5, and 8.5 for boys, men, and older men. In conclusion, ST was not consistently higher at older ages. Instead, we found that the potential critical moments in which ST may be higher are during adolescence and in the transition from adulthood into older adulthood, which represents critical periods for interventions.


Assuntos
Acelerometria , Distribuição por Idade , Exercício Físico , Comportamento Sedentário , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Portugal , Fatores de Tempo , Adulto Jovem
20.
Stroke ; 47(6): 1571-6, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-27118796

RESUMO

BACKGROUND AND PURPOSE: Historical stroke cohorts reported a U- or J-shaped relationship between blood pressure (BP) and clinical outcome. However, these studies predated current revascularization strategies, disregarding the recanalization state of the affected arterial territory. We aimed to investigate the relationship between BP in the first 24 hours after ischemic stroke and clinical outcome in patients submitted to intravenous or intra-arterial recanalization treatments. METHODS: Consecutive patients with acute stroke treated with intravenous thrombolysis or intra-arterial therapies were enrolled in a retrospective cohort study. BP was measured on regular intervals throughout day and night during the first 24 hours after stroke onset. The mean systolic BP and diastolic BP during the first 24 hours post stroke were calculated. Recanalization was assessed at 6 hours by transcranial color-coded Doppler, angiography, or angio-computed tomography. Functional outcome was assessed at 3 months by modified Rankin Scale. Linear and quadratic multivariate regression models were performed to determine associations between BP and functional outcome for the whole population and recanalyzed and nonrecanalyzed patients. RESULTS: We included 674 patients; mean age was 73.28 (SD, 11.50) years. Arterial recanalization was documented in 355 (52.70%) patients. In multivariate analyses, systolic BP and diastolic BP in the first 24 hours post stroke show a J-shaped relationship with functional outcome in the total population and in the nonrecanalyzed patients. Recanalyzed patients show a linear association with functional outcome (systolic BP: odds ratio, 1.015; 95% confidence interval, 1.007-1.024; P=0.001; R(2) change=0.001; P=0.412 and diastolic BP: odds ratio, 1.019; 95% confidence interval, 1.004-1.033; P=0.012; R(2) change<0.001; P=0.635). CONCLUSIONS: Systemic BP in the first 24 hours after ischemic stroke influences 3-month clinical outcome. This association is dependent on the revascularization status.


Assuntos
Pressão Sanguínea/fisiologia , Isquemia Encefálica/terapia , Avaliação de Resultados em Cuidados de Saúde/métodos , Sistema de Registros , Acidente Vascular Cerebral/terapia , Idoso , Idoso de 80 Anos ou mais , Isquemia Encefálica/diagnóstico por imagem , Isquemia Encefálica/fisiopatologia , Procedimentos Endovasculares , Feminino , Fibrinolíticos/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Ativadores de Plasminogênio/uso terapêutico , Estudos Retrospectivos , Acidente Vascular Cerebral/diagnóstico por imagem , Acidente Vascular Cerebral/fisiopatologia , Terapia Trombolítica
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