75 results match your criteria: "Portugal Dr Henriques; and Research Centre in Digital Services CISeD[Affiliation]"

Childhood is a critical stage of development during which diet can have profound influence on the microbiota-host interactions, leading to potentially lifelong impacts. This study aimed to investigate whether the consumption of cafeteria diet (CAFD) and sugary drinks during early rat life alters the structure of the gut microbial community and the metabolic activity. Four-week-old male Wistar rats ( = 27) were fed a standard chow diet with ad libitum access to water (CD) or to sucrose solution (HSD), and a third group was fed with CAFD and a sucrose solution for 14 weeks.

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The authors developed a global chronic total occlusion crossing algorithm following 10 steps: 1) dual angiography; 2) careful angiographic review focusing on proximal cap morphology, occlusion segment, distal vessel quality, and collateral circulation; 3) approaching proximal cap ambiguity using intravascular ultrasound, retrograde, and move-the-cap techniques; 4) approaching poor distal vessel quality using the retrograde approach and bifurcation at the distal cap by use of a dual-lumen catheter and intravascular ultrasound; 5) feasibility of retrograde crossing through grafts and septal and epicardial collateral vessels; 6) antegrade wiring strategies; 7) retrograde approach; 8) changing strategy when failing to achieve progress; 9) considering performing an investment procedure if crossing attempts fail; and 10) stopping when reaching high radiation or contrast dose or in case of long procedural time, occurrence of a serious complication, operator and patient fatigue, or lack of expertise or equipment. This algorithm can improve outcomes and expand discussion, research, and collaboration.

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A molecular test based on RT-LAMP for rapid, sensitive and inexpensive colorimetric detection of SARS-CoV-2 in clinical samples.

Sci Rep

August 2021

Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. República, 2780-157, Oeiras, Portugal.

Until there is an effective implementation of COVID-19 vaccination program, a robust testing strategy, along with prevention measures, will continue to be the most viable way to control disease spread. Such a strategy should rely on disparate diagnostic tests to prevent a slowdown in testing due to lack of materials and reagents imposed by supply chain problems, which happened at the beginning of the pandemic. In this study, we have established a single-tube test based on RT-LAMP that enables the visual detection of less than 100 viral genome copies of SARS-CoV-2 within 30 min.

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Guidelines for the Management of Center-Involving Diabetic Macular Edema: Treatment Options and Patient Monitorization.

Clin Ophthalmol

July 2021

Ophthalmology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal; Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal.

Diabetic macular edema (DME) is the main cause of visual impairment associated with diabetic retinopathy (DR) and macular laser, during approximately three decades, and was the single treatment option. More recently, intravitreous injections of anti-angiogenics and corticosteroids modified the treatment paradigm associated with significant vision improvements. Nevertheless, not all patients respond satisfactorily to anti-VEGF or corticosteroid injections, so an adequate treatment choice and a prompt switch in therapeutic class is recommended.

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Epicardial Adipose Tissue: The Genetics Behind an Emerging Cardiovascular Risk Marker.

Clin Med Insights Cardiol

July 2021

Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal.

Evidence points epicardial adipose tissue (EAT) as an emerging cardiovascular risk marker. Whether genetic polymorphisms linked with atherosclerosis are associated with higher EAT is still unknown. We aim to assess the role of genetic burden of atherosclerosis and its association to EAT in a cohort of asymptomatic individuals without coronary disease.

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Fish discards and by-products can be transformed into high value-added products such as fish protein hydrolysates (FPH) containing bioactive peptides. Protein hydrolysates were prepared from different parts (whole fish, skin and head) of several discarded species of the North-West Spain fishing fleet using Alcalase. All hydrolysates had moisture and ash contents lower than 10% and 15%, respectively.

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Trauma Prehospital Hypothermia Prevention and Treatment: An Observational Study.

J Trauma Nurs

September 2021

Abel Salazar Institute of Biomedical Sciences (Mr Mota) and CINTESIS-Center for Health Technology and Services Research (Dr M. R. Santos), University of Porto, Porto, Portugal; Superior Health School of Viseu, Viseu, Portugal (Mr Mota and Dr Cunha); UICISA: E/ESEnfC-Cluster at the Health School of Polytechnic Institute of Viseu, Viseu, Portugal (Mr Mota and Dr Cunha); Hospital Nossa Senhora da Assunção, Local Health Unit of Guarda, Seia, Portugal (Mr Mota); Nursing School of Porto, Porto, Portugal (Dr M. R. Santos); Department of Rheumatology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal (Dr E. J. F. Santos); Health Sciences Research Unit: Nursing, Nursing School of Coimbra, Coimbra. Portugal (Dr E. J. F. Santos); Polytechnic Institute of Viseu, Viseu, Portugal (Drs Henriques and Matos); Centre for Mathematics of the University of Coimbra (CMUC), Coimbra, Portugal (Dr Henriques); and Research Centre in Digital Services (CISeD), Viseu, Portugal (Dr Matos).

Background: Hypothermia in trauma patients causes increased morbidity and mortality. Swift recognition and treatment are important to prevent any further heat loss. In addition, patient discomfort from cold decreases satisfaction with care.

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Assessing the contribution of mangrove carbon and of other basal sources to intertidal flats adjacent to one of the largest West African mangrove forests.

Mar Environ Res

July 2021

Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.

Mangrove forests are productive habitats and major potential exporters of organic matter and nutrients to adjacent habitats. Here we examine the extent to which mangrove carbon is transferred to adjacent intertidal food webs in the second largest mangrove-covered area in Africa, in Guinea-Bissau. Applying stable isotope analysis and mixing models, we made comparisons at two spatial scales: (1) a large scale, comparing intertidal flats with (mangrove sites) and without (control sites) adjacent mangrove forests regarding the carbon isotopic signature of macrozoobenthos and sediment organic matter (SOM), and the relative importance of potential primary food sources in sustaining macrozoobenthos, and (2) a fine scale, performing stable carbon isotope measurements along 200 m transects from the coastline out to open intertidal flats, to trace mangrove carbon in macrozoobenthos and in the SOM.

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From 1985 to 2016, the prevalence of underweight decreased, and that of obesity and severe obesity increased, in most regions, with significant variation in the magnitude of these changes across regions. We investigated how much change in mean body mass index (BMI) explains changes in the prevalence of underweight, obesity, and severe obesity in different regions using data from 2896 population-based studies with 187 million participants. Changes in the prevalence of underweight and total obesity, and to a lesser extent severe obesity, are largely driven by shifts in the distribution of BMI, with smaller contributions from changes in the shape of the distribution.

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A major risk factor promoting tumor development is chronic inflammation and the use of nonsteroidal anti-inflammatory drugs (NSAID), including ibuprofen, can decrease the risk of developing various types of cancer, including colorectal cancer (CRC). Although the molecular mechanism behind the antitumor properties of NSAIDs has been largely attributed to inhibition of cyclooxygenases (COXs), several studies have shown that the chemopreventive properties of ibuprofen also involve multiple COX-independent effects. One example is its ability to inhibit the alternative splicing event generating RAC1B, which is overexpressed in a specific subset of BRAF-mutated colorectal tumors and sustains cell survival.

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Genetic Diversity in the Portuguese Mertolenga Cattle Breed Assessed by Pedigree Analysis.

Animals (Basel)

October 2020

Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária-Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal.

The Mertolenga beef cattle, currently with 27,000 breeding females in Portugal, is the largest Portuguese native breed, despite some variation in the breeding stock over the last years. The purpose of this study was to estimate parameters related to the population structure and genetic diversity and to investigate the major factors affecting genetic erosion in the breed, based on the pedigree herdbook information collected since the 1950s, including records on 221,567 animals from 425 herds. The mean generation intervals were 6.

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Background: The development of multicenter patient registries promotes the generation of scientific knowledge by using real-world data. A country-wide, web-based registry for inherited retinal dystrophies (IRDs) empowers patients and community organizations, while supporting formal partnerships research. We aim to describe the design, development and deployment of a country-wide, with investigators and stakeholders in the global aim to develop high-value, high-utility web-based, user-friendly and interoperable registry for IRDs-the IRD-PT.

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Introduction: Perifoveal exudative vascular anomalous complex (PEVAC) is an underdiagnosed macular entity. A striking feature of this entity is the unresponsiveness to anti-VEGF treatment. Continuous wave milipulse yellow laser 577 nm (CWMYL-577) has a high absorption peak for oxyhaemoglobin, which allows for low power density use.

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A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants.

Environ Int

November 2020

Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel. Electronic address:

The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national surveillance programs are in place for clinical and veterinary settings, no such schemes exist for monitoring antibiotic-resistant bacteria in the environment. In this transnational study, we developed, validated, and tested a low-cost surveillance and easy to implement approach to evaluate antibiotic resistance in wastewater treatment plants (WWTPs) by targeting cefotaxime-resistant (CTX-R) coliforms as indicators.

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Background: Data on nutritional status and its risk factors amongst the adult population of the Madeira Autonomous Region (RAM) is scarce. This study aims to investigate the prevalence of, and risk factors associated with overweight and abdominal adiposity, assessed through measuring body mass index (BMI), waist circumference (WC), and waist-to-height ratio (WHtR) indexes.

Methods: Cross-sectional study using a representative sample of 911 subjects (18-64 years) from the RAM Dietary Habits of Adult Population Study.

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Erratum: Borges, I., et al. Exposure of Smaller and Oxidized Graphene on Polyurethane Surface Improves its Antimicrobial Performance. 2020, , 349.

Nanomaterials (Basel)

July 2020

i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.

The authors wish to make the following corrections to this paper [...

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Orally administrated chitosan microspheres bind Helicobacter pylori and decrease gastric infection in mice.

Acta Biomater

September 2020

i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal. Electronic address:

Persistent Helicobacter pylori (H. pylori) infection is related to 90% of gastric cancers. With bacterial resistance rising and treatment inefficiency affecting 15% of the patients, alternative treatments urge.

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Autonomous replication and segregation of mitochondrial DNA (mtDNA) creates the potential for evolutionary conflict driven by emergence of haplotypes under positive selection for 'selfish' traits, such as replicative advantage. However, few cases of this phenomenon arising within natural populations have been described. Here, we survey the frequency of mtDNA horizontal transfer within the canine transmissible venereal tumour (CTVT), a contagious cancer clone that occasionally acquires mtDNA from its hosts.

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Portuguese-Brazilian evidence-based guideline on the management of hyperglycemia in type 2 diabetes mellitus.

Diabetol Metab Syndr

May 2020

Internal Medicine Department, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil.

Background: In current management of type 2 diabetes (T2DM), cardiovascular and renal prevention have become important targets to be achieved. In this context, a joint panel of four endocrinology societies from Brazil and Portugal was established to develop an evidence-based guideline for treatment of hyperglycemia in T2DM.

Methods: MEDLINE (via PubMed) was searched for randomized clinical trials, meta-analyses, and observational studies related to diabetes treatment.

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Graphene-based materials (GBMs) have been increasingly explored for biomedical applications. However, interaction between GBMs-integrating surfaces and bacteria, mammalian cells, and blood components, that is, the major biological systems in our body, is still poorly understood. In this study, we systematically explore the features of GBMs that most strongly impact the interactions of GBMs films with plasma proteins and biological systems.

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Exposure of Smaller and Oxidized Graphene on Polyurethane Surface Improves its Antimicrobial Performance.

Nanomaterials (Basel)

February 2020

i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.

Catheter-related infections are a common worldwide health problem, highlighting the need for antimicrobial catheters. Here, antibacterial potential of graphene nanoplatelets (GNP) incorporated in the commonly used polymer for catheter manufacture-polyurethane (PU)-is investigated. Two strategies are explored: melt-blending, producing a composite, and dip coating, where a composite layer is deposited on top of PU.

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Introduction: Complex risk scores have limited applicability in the assessment of patients with myocardial infarction (MI). In this work, the authors aimed to develop a simple to use clinical score to stratify the in-hospital mortality risk of patients with MI at first medical contact.

Methods: In this single-center prospective registry assessing 1504 consecutively admitted patients with MI, the strongest predictors of in-hospital mortality were selected through multivariate logistic regression.

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WNK1 phosphorylation sites in TBC1D1 and TBC1D4 modulate cell surface expression of GLUT1.

Arch Biochem Biophys

January 2020

Department of Human Genetics, National Health Institute 'Dr. Ricardo Jorge', Lisbon, Portugal; BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal. Electronic address:

Glucose uptake by mammalian cells is a key mechanism to maintain cell and tissue homeostasis and relies mostly on plasma membrane-localized glucose transporter proteins (GLUTs). Two main cellular mechanisms regulate GLUT proteins in the cell: first, expression of GLUT genes is under dynamic transcriptional control and is used by cancer cells to increase glucose availability. Second, GLUT proteins are regulated by membrane traffic from storage vesicles to the plasma membrane (PM).

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Article Synopsis
  • Canine transmissible venereal tumor (CTVT) is a unique cancer that has survived for thousands of years by spreading through cell transfer from one dog to another.
  • Researchers analyzed 546 CTVT exomes to create a timeline and track its global spread, discovering a specific mutational process that occurred early in its evolution but later disappeared.
  • The study found that while CTVT shows minimal ongoing positive selection and some negative selection in key genes, random genetic drift plays a major role in the long-term evolution of this cancer.
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