170,318 results match your criteria: "Portugal ; Centro Hospitalar da Universidade de Coimbra CHUC[Affiliation]"

Background: Visceral leishmaniosis (VL) is the most severe form of human leishmaniosis, with an estimated 95% case fatality if left untreated. Dogs act as peridomestic reservoir hosts for the protozoan parasite Leishmania infantum, a causative agent for human leishmaniosis, endemic throughout the Mediterranean basin. To assure consistent and accurate surveillance of canine infection and prevent transmission to people, consistent diagnosis of canine L.

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New low-dose curcumin derivative with therapeutic potential in Alzheimer's disease: Results from an in vitro and in vivo study in mice.

Neurobiol Aging

December 2024

Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal; Centro Clínico e Académico de Coimbra, Coimbra, Portugal; Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal; Coimbra Institute of Clinical and Biomedical Research, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.

Curcumin has been proposed as a potential treatment for Alzheimer's disease (AD) due to its ability to inhibit amyloid-β (Aβ) peptide aggregates and to destabilise pre-formed ones. Derivative 27 was synthesized to improve low-dose efficacy in the context of AD. Its anti-inflammatory, antioxidant and anti-amyloidogenic activities were evaluated in chemico, in vitro using AD and neuroinflammation cell models, and in vivo using the double-transgenic APP/PS1 mice.

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The effect of genotype and sex on carcass characteristics and fatty acid profile of Pekin broiler ducks.

Poult Sci

December 2024

Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Quinta do Marquês, 2780-159 Oeiras, Portugal; GeoBioTec - Geobiosciences, Geoengineering e Geobiotechnologies, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal.

The aim of this study was to compare two different strains of Pekin duck and to answer one scientific hypothesis: 1) Strain and sex influence live body weight, hot and cold carcass weights and carcass portions weights and yields, fatty acid content, fatty acid total cholesterol and α-tocopherol contents of meat. The study used 50 individuals of each strain in comparison (Cherry Valley and Grimaud) equally divided between both sexes), raised in equal rearing and feeding conditions. The results show that, when raised in equal rearing and feeding conditions and slaughtered at matching age, the strain had no significant influence on live body weight at slaughter, warm and cold carcass weights.

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Background: Antarctic expeditions, although supported by scientific knowledge, face various challenges, with little research conducted to explore the physical demands that explorers experience.

Objective: To summarise physiological, psychological, body composition and nutritional changes faced during trek expeditions in the Antarctic's continental portion.

Design: Systematic review.

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 - a large-scale dataset of 3D medical shapes for computer vision.

Biomed Tech (Berl)

December 2024

Institute for Artificial Intelligence in Medicine (IKIM), University Hospital Essen (AöR), Essen, Germany.

Objectives: The shape is commonly used to describe the objects. State-of-the-art algorithms in medical imaging are predominantly diverging from computer vision, where voxel grids, meshes, point clouds, and implicit surface models are used. This is seen from the growing popularity of ShapeNet (51,300 models) and Princeton ModelNet (127,915 models).

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How to determine hands' vibration perception thresholds - a systematic review.

Behav Res Methods

December 2024

Algoritmi Research Centre, University of Minho, Campus de Azurém, 4800-058, Guimarães, Portugal.

The vibration perception threshold (VPT) is the minimum amplitude required for conscious vibration perception. VPT assessments are essential in medical diagnostics, safety, and human-machine interaction technologies. However, factors like age, health conditions, and external variables affect VPTs.

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The management and creation of Marine Protected Areas (MPAs) is currently under great focus, with international organisations aiming to protect 30% of our oceans by 2030. The success of MPAs depends on a nuanced understanding of local ecological dynamics and threats, which can significantly influence ecosystem balance. Herbivory can be a stressor for foundation species, namely kelp forests, contributing to their decline in several regions of the globe.

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Perivascular adipose tissue: a central player in the triad of diabetes, obesity, and cardiovascular health.

Cardiovasc Diabetol

December 2024

Institute of Physiology, iCBR, Faculty of Medicine, University of Coimbra, Subunit 1, polo 3, Azinhaga de Santa Comba, Celas, 3000-548, Coimbra, Portugal.

Perivascular adipose tissue (PVAT) is a dynamic tissue that affects vascular function and cardiovascular health. The connection between PVAT, the immune system, obesity, and vascular disease is complex and plays a pivotal role in the pathogenesis of vascular diseases such as atherosclerosis, hypertension, and vascular inflammation. In cardiometabolic diseases, PVAT becomes a significant source of proflammatory adipokines, leading to increased infiltration of immune cells, in cardiometabolic diseases, PVAT becomes a significant source of proinflammatory adipokines, leading to increased infiltration of immune cells, promoting vascular smooth muscle cell proliferation and migrationpromoting vascular smooth muscle cell proliferation and migration.

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Background: There is no global agreement on the definition of Chronic Spontaneous Urticaria (CSU) remission.

Objective: To generate a consensus for clinical definitions in CSU focused on remission.

Methods: The World Allergy Organization (WAO) Urticaria Committee systematically reviewed current available longitudinal articles.

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Background: Anxiety disorders are widespread across the world. Understanding the global burden of anxiety disorders in the past and future can provide important references for optimizing prevention and control strategies in healthcare systems.

Methods: The estimation of anxiety disorders in the Global Burden of Disease Study 2021 using systematic review was conducted to describe incidence, prevalence and disability adjusted life years (DALYs) in 204 countries and regions from 1990 to 2021.

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Considering the increase in demand for rare earth elements (REEs) and their accumulation in soil ecosystems, it is crucial to understand their toxicity. However, the impact of lanthanum, yttrium and cerium oxides (LaO, YO and CeO, respectively) on soil organisms remains insufficiently studied. This study aims to unravel the effects of LaO, YO and CeO nanoparticles (NPs) and their corresponding bulk forms (0, 156, 313, 625, 1250 and 2500 mg/kg) on the terrestrial species Enchytraeus crypticus.

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Looking at the albumin-drug binding via partitioning in aqueous two-phase system.

Biochem Biophys Res Commun

December 2024

Cleveland Diagnostics, 3615 Superior Ave., Cleveland, OH, 44114, USA. Electronic address:

The partition coefficient of human serum albumin (HSA) was analyzed in the PEG600-Dex70, 0.15 M NaCl/KCl in 0.01 M Na/K phosphate buffer, pH 7.

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Untargeted metabolomics to relate changes produced by biocontrol agents against Aspergillus westerdijkiae and Penicillium nordicum in vitro on dry-cured ham.

Int J Food Microbiol

December 2024

Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain.

Dry-cured ham is a highly appreciated meat product. During the ripening, moulds grow on its surface such as Penicillium nordicum and Aspergillus westerdijkiae producers of ochratoxin A (OTA). This mycotoxin poses a risk to consumers that must be controlled.

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Safety of baricitinib in vaccinated patients with severe and critical COVID-19 sub study of the randomised Bari-SolidAct trial.

EBioMedicine

December 2024

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Section for Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway. Electronic address:

Background: The Bari-SolidAct randomized controlled trial compared baricitinib with placebo in patients with severe COVID-19. A post hoc analysis revealed a higher incidence of serious adverse events (SAEs) among SARS-CoV-2-vaccinated participants who had received baricitinib. This sub-study aimed to investigate whether vaccination influences the safety profile of baricitinib in patients with severe COVID-19.

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Dual-compartment-gate organic transistors for monitoring biogenic amines from food.

Biosens Bioelectron

December 2024

Department of Life Sciences, Università Degli Studi di Modena e Reggio Emilia, Via Campi 103, Modena, 41125, Italy; Center for Translational Neurophysiology of Speech and Communication, Istituto Italiano di Tecnologia (CTNSC), Via Fossato di Mortara 17-19, Ferrara, 44121, Italy.

According to the Food and Agriculture Organization of the United Nations (FAO) more than 14% of the world's food production is lost every year before reaching retail, and another 17% is lost during the retail stage. The use of the expiration date as the main estimator of the life-end of food products creates unjustified food waste. Sensors capable of quantifying the effective food freshness and quality could substantially reduce food waste and enable more effective management of the food chain.

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This systematic review aimed to evaluate the independent and joint effects of social exclusion in three specific domains-economic, social relations, and civic participation-on the cognitive health of middle-aged and older adults. Longitudinal studies from January 2000 to October 2023 were identified via Web of Science, Scopus, and PubMed, with sixty-five studies meeting inclusion criteria. The quality of the studies was assessed with Newcastle-Otawa Scale.

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Purpose: This study explored the narrative coherence of the accounts of an experienced event produced by autistic and neurotypical children (ages 6-15 years) after delays of two weeks and two months.

Methods: The sample comprised 27 autistic children and 32 neurotypical peers, who were interviewed about the event using the Revised National Institute of Child Health and Human Development (NICHD) Investigative Interview Protocol. The study focused on assessing the narrative coherence of children's reports, emphasizing key story grammar elements and temporal features in their narratives.

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Stone-event-free survival after retrograde intrarenal surgery: is the stone-free-status so relevant for the future outcomes?

Int Urol Nephrol

December 2024

Department of Urology, Unidade Local de Saúde de Santo António, Centro Hospitalar Universitário Do Porto, 8th floor, Largo Do Prof. Abel Salazar, 4099-001, Porto, Portugal.

Introduction: The primary aim of stone treatment is to achieve stone-free status. Residual fragments can cause stone growth, recurrence, urinary tract infections, and ureteric obstruction. Our goal was to describe the natural history of stone burden after retrograde intrarenal surgery (RIRS) based on stone-free status (SFS), evaluating stone growth and stone-events.

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Background: We aimed to describe a 2-year outcome of eyes managed by practitioners benchmarked using a funnel plot by their frequency of treatment using vascular endothelial growth factor (VEGF) inhibitors for naive retinal vein occlusion (RVO).

Methods: A multicentre, international, observational study of 29 doctors in 12 countries managing 1110 eyes with RVO commencing VEGF inhibitors between 1 January 2012-2022 tracked in the Fight Retinal Blindness! registry.

Results: We identified 3 outlying 'intensive' practitioners (managing 350/1110 eyes [32%]), 22 'typical' practitioners (604/1110, [54%]) and 4 outlying 'relaxed' practitioners (156/1110, [14%]) with respective 24-month outcomes in Branch and Central RVO including the primary outcome, mean adjusted change in visual acuity (VA) in BRVO: +16.

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Adaptive or non-adaptive? Cranial evolution in a radiation of miniaturized day geckos.

BMC Ecol Evol

December 2024

Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, PA, 19085, USA.

Lygodactylus geckos represent a well-documented radiation of miniaturized lizards with diverse life-history traits that are widely distributed in Africa, Madagascar, and South America. The group has diversified into numerous species with high levels of morphological similarity. The evolutionary processes underlying such diversification remain enigmatic, because species live in different ecological biomes, ecoregions and microhabitats, while suggesting strikingly high levels of homoplasy.

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Background: We sought to define whether and how hepatic ischemia/reperfusion (I/R) as manifested by perioperative aspartate aminotransferase (AST) and alanine aminotransaminase (ALT) levels impact long-term outcomes after curative-intent resection of hepatocellular carcinoma (HCC).

Patients And Methods: Intrasplenic injection of HCC cells was used to establish a murine model of HCC recurrence with versus without I/R injury. Patients who underwent curative resection for HCC were identified from a multi-institutional derivative cohort (DC) and separate external validation (VC) cohort.

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This pragmatic double-blind randomized clinical trial aims to assess the impact of vascular photobiomodulation on post-COVID-19 patients experiencing tension-type headache, orofacial pain, or both persisting for more than 3 months. Participants were divided into two groups: vascular photobiomodulation (VPBM) and simulated VPBM. Their conditions were evaluated using the Brief Pain Inventory (BPI), Visual Analogue Scale, and Headache Impact Test (HIT-6).

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Combined association of physical activity and depressive symptoms with cardiometabolic risk factors in Chilean adults.

Sci Rep

December 2024

Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile (USACH), Santiago, Chile.

Cardiometabolic risk factors such as obesity, raised blood pressure, high blood glucose and dyslipidemia are emerging health concerns worldwide. Therefore, the aim of this study was to estimate the combined association between physical activity and depressive symptoms with cardiometabolic risk factors in Chilean adults. Data was obtained from the National Health Survey of Chile 2016-2017, with a sample of 5995 adult participants.

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An automatic system for pathology classification in chest X-ray scans needs more than predictive performance, since providing explanations is deemed essential for fostering end-user trust, improving decision-making, and regulatory compliance. CLARE-XR is a novel methodology that, when presented with an X-ray image, identifies the associated pathologies and provides explanations based on the presentation of similar cases. The diagnosis is achieved using a regression model that maps an image into a 2D latent space containing the reference coordinates of all findings.

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