8,613 results match your criteria: "University of Rio Grande do Sul[Affiliation]"
Alzheimers Dement
December 2024
Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
Background: Alzheimer's disease (AD) is a progressive neurodegenerative disease and the most common form of dementia. Although AD is characterized by the accumulation of amyloid beta (Aβ) plaques and neurofibrillary tangles (NFTs), it's estimated that nearly half of AD cases might be attributed to modifiable risk factors and lifestyle-based interventions may offer promising preventative strategies to delay disease onset and progression. Polyphenolic derivatives easily found in foods like luteolin and curcumin have shown beneficial effects to counteract cognitive decline.
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December 2024
Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
Background: Alzheimer's disease (AD) is a progressive and multifactorial neurodegenerative disease that still has no cure. Different pathological processes contribute to the disease's development, such as the presence of amyloid beta (Aβ) plaques, neurofibrillary tangles (NFTs), glutamatergic excitotoxicity, oxidative stress, and neuroinflammation. Chalcones are polyphenolic compounds of natural origin with a wide range of biological activities, and emerging studies have reported neurotrophic activity, anti-inflammatory and antioxidant effects, and the inhibition of Aβ aggregation.
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December 2024
Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
Background: Recognizing Alzheimer's disease (AD) early is essential for enhancing patient outcomes. Therefore this research focused on exploring indicators of AD by investigating the role of declining financial capacity (FC) in predicting objetive cognitive impairment (OCI).
Method: We analyzed participants without OCI in Mini-mental state examination (MMSE, Table 1) or Clinical Dementia Rating-Sum of Boxes (CDR-SB, Table 2) scores from the ADNI database.
Alzheimers Dement
December 2024
Alzheimer's Disease Neuroimaging Initiative, http://adni.loni.usc.edu/, CA, USA.
Background: Several studies have shown that financial capacity constitutes a vital component of instrumental activities of daily living. However, there is insufficient research investigating the relationship between financial impairment, brain volume changes and cognitive decline in Alzheimer's disease (AD). Here, we examine the association between brain volume changes and financial capacity in cognitively unimpaired (CU) and mild cognitively impaired (MCI) individuals.
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December 2024
Alzheimer's Disease Neuroimaging Initiative, http://adni.loni.usc.edu/, CA, USA.
Background: Amyloid and tau pathologies are the hallmarks of Alzheimer's disease (AD). Previous research indicated notable connections between financial capacity and AD biomarkers. Here, we aimed to understand whether financial capacity is affected by the cerebral accumulation of tau and amyloid.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Laboratory of Neuro Imaging (LONI), University of Southern California, Los Angeles, CA, USA.
Background: Anti-amyloid therapy appears to have an increased effect on reducing cognitive decline in amyloid- and tau-positive individuals. However, clinical trials inclusion criteria require solely amyloid positivity. Herein, we developed a machine-learning prediction model to identify tau positivity in amyloid-positive individuals using clinical variables.
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December 2024
Laboratory of Neuro Imaging (LONI), University of Southern California, Los Angeles, CA, USA.
Background: Screen failure due to amyloid negativity is yet a problem in clinical trials for anti-amyloid drugs. In this context, clinical characteristics of patients presenting with cognitive decline may decrease the screen failure ratio by increasing the odds of selecting individuals with brain amyloid pathology. Herein, we aimed at estimating amyloid and tau positivity in individuals using clinical variables in a machine learning model of prediction.
View Article and Find Full Text PDFBMC Public Health
January 2025
Department of Population Health Sciences, School of Life Course & Population Sciences, King's College London, Franklin-Wilkins Building, Stamford Street London, SE1 9NH, UK.
Background: Climate change has severe health impacts, particularly for populations living in environmentally sensitive areas such as riversides, slopes, and forests. These challenges are exacerbated for Indigenous communities, who often face marginalisation and rely heavily on the land for their livelihoods. Despite their vulnerability, the perspectives of Indigenous populations on climate change and its impacts remain underexplored, creating a critical gap in the literature.
View Article and Find Full Text PDFPsychoneuroendocrinology
December 2024
Laboratory of Experimental Physiopathology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciuma, SC, Brazil; Hospital São José Research Center, Criciúma, SC, Brazil.
COVID-19 has significant long-term impacts, including a chronic syndrome known as long-COVID, characterized by persistent symptoms post-recovery. The inflammatory response during acute infection is hypothesized to influence long-term outcomes. This study aimed to identify inflammatory biomarkers predictive of functional outcomes one year after hospital discharge.
View Article and Find Full Text PDFJMIR Serious Games
January 2025
Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
Background: This study evaluated the effectiveness of a virtual reality (VR) high-intensity interval training (HIIT) boxing protocol compared to traditional high-intensity circuit training (HICT) in improving exercise motivation, engagement, and physiological responses among 30 healthy medical students.
Objective: The purpose was to compare the VR HIIT protocol, which involved using an Oculus Quest 2 for a futuristic exoskeleton game experience, with a traditional 12-exercise HICT.
Methods: In total, 30 medical students engaged in both VR HIIT, using an Oculus Quest 2 for a futuristic exoskeleton game experience, and a traditional 12-exercise HICT.
Nutr Neurosci
January 2025
Post-Graduate Program in Food, Nutrition and Health, Federal University of Rio Grande do Sul, UFRGS, Porto Alegre, Brazil.
Objectives: Scientific evidence suggests an association between diet quality and the prevalence of common mental disorders (CMD) in women. Thus, this study aimed to investigate the association between a healthy dietary pattern and CMD among women.
Methods: A cross-sectional population-based study was conducted on a representative sample of 1128 women, aged 20-69 years, residing in the urban area of São Leopoldo, RS, Brazil.
Pharmaceutics
December 2024
Unit Operations Lab, School of Technology, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681-Prédio 30, Bloco F, Sala 208, Porto Alegre 90619-900, Brazil.
Degradation by physical and chemical agents affects the properties of essential oils; therefore, this study aimed to protect the volatile compounds present in essential oils through biopolymer encapsulation. The (Lam) DC. essential oil was obtained by steam distillation at 2.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves 9500, Porto Alegre 90010-150, RS, Brazil.
This study reported a one-spot preparation of magnetic composite carbon (MCC@Fe) from microcrystalline cellulose (MC). The pure cellulose was impregnated in iron (III) chloride solution and carbonized at 650 °C. The MCC@Fe composite adsorbent underwent various characterization techniques.
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Department of Biological Chemistry, Regional University of Cariri-URCA, Crato 63105-000, CE, Brazil.
Phytol is a diterpene from the long-chain unsaturated acyclic alcohols, known for its diverse biological effects, including antimicrobial and anti-inflammatory activities. Present in essential oils, phytol is a promising candidate for various applications in the pharmaceutical and biotechnological sectors. This study aimed to evaluate the antibacterial and drug-potentiating effects of phytol against multidrug-resistant bacteria and to evaluate its properties: ADME and molecular docking.
View Article and Find Full Text PDFClin Oral Investig
January 2025
Graduate Program in Dentistry, ULBRA, Avenue. Farroupilha 8001, Zip Code, Canoas, 92425-900, Brazil.
Introduction: Regenerative endodontic procedures (REPs) aim to replace damaged dental structures and regenerate the dentin-pulp complex. Initially focused on teeth with incomplete root formation, recent research shows promise for necrotic teeth with complete root formation.
Methodology: This review, following PRISMA guidelines and registered in PROSPERO, included clinical studies on regenerative endodontic therapy in necrotic human teeth with complete root formation.
One Health Outlook
January 2025
Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, SP, Brazil.
Background: Rabies, a lethal viral zoonotic disease, remains a significant global public health concern. In northeastern Brazil, in particular, its epidemiology is complex and dynamic, characterized by the presence of several reservoirs associated with human rabies infection.
Methods: This study, conducted from June 2022 to July 2023, was part of a passive epidemiological surveillance initiative under Brazil's National Rabies Surveillance Program.
Oral Surg Oral Med Oral Pathol Oral Radiol
December 2024
Oral Medicine Division, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre-RS, Brazil. Electronic address:
Objective: actinic cheilitis (AC) is a potentially malignant disorder of the lip vermillion. The study of effective therapeutic options is of the utmost importance to prevent the development of lip squamous cell carcinoma. This study aimed to evaluate the topical effect of imiquimod 5% (IM) and fludroxycortide (FC) 0.
View Article and Find Full Text PDFBMC Psychiatry
January 2025
IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
Background: The association between physical fitness and autistic traits in adolescents remains under explored, especially in adolescents. Understanding this relationship can provide strategies to improve the quality of life of these people.
Objective: To identify the association between cluster characteristics derived from levels of self-perceived physical fitness and the occurrences of individual levels of autistic traits in Brazilian adolescents.
Br J Anaesth
January 2025
Population Health Research Institute, Hamilton, ON, Canada; Department of Medicine, McMaster University, Hamilton, ON, Canada.
Background: Optimised use of kidney function information might improve cardiac risk prediction in noncardiac surgery.
Methods: In 35,815 patients from the VISION cohort study and 9219 patients from the POISE-2 trial who were ≥45 yr old and underwent nonurgent inpatient noncardiac surgery, we examined (by age and sex) the association between continuous nonlinear preoperative estimated glomerular filtration rate (eGFR) and the composite of myocardial injury after noncardiac surgery, nonfatal cardiac arrest, or death owing to a cardiac cause within 30 days after surgery. We estimated contributions of predictive information, C-statistic, and net benefit from eGFR and other common patient and surgical characteristics to large multivariable models.
Int J Colorectal Dis
January 2025
Department of Surgery, Division of Coloproctology, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande Do Sul. Room 600 A, Rua Ramiro Barcelos, Porto Alegre, RS, 2350, Brazil.
Front Immunol
January 2025
Laboratory of Genomic Medicine, Center of Experimental Research, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil.
Introduction: The COVID-19 pandemic had a widespread global impact and presented numerous challenges. The emergence of SARS-CoV-2 variants has changed transmission rates and immune evasion, possibly impacting the severity. This study aims to investigate the impact of variants on clinical outcomes in southern Brazil.
View Article and Find Full Text PDFTrends Psychiatry Psychother
January 2024
Amsterdam UMC, University of Amsterdam, Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience Research Institute, Amsterdam, Netherlands. ARQ National Psychotrauma Centre, Diemen, Netherlands.
Behav Brain Res
December 2024
Center of Health Sciences, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil. Electronic address:
Brain Dev
December 2024
Professor of Neurology, School of Medicine, and Brain Institute (BraIns) Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil. Electronic address:
ACS Omega
December 2024
Department of Organic and Inorganic Chemistry, Science Center, Federal University of Ceará, Fortaleza, CE 60455-760, Brazil.
One of the most investigated molecular targets for anticancer therapy is the proto-oncogene , which is amplified and thus overexpressed in many types of cancer. Due to its structural characteristics, developing inhibitors for the target has proven to be challenging. In this study, the anti-MYC potential of lanostane-type triterpenes was investigated for the first time, using computational approaches that involved ensemble docking, prediction of structural properties and pharmacokinetic parameters, molecular dynamics (MD), and binding energy calculation using the molecular mechanics-generalized born surface area (MM-GBSA) method.
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