5,402 results match your criteria: "Valdes; London Health Sciences Centre[Affiliation]"
Expert Rev Respir Med
June 2024
Pulmonology Unit, University Clinical Hospital of Santiago de Compostela, Santiago de Compostela, Spain.
Background: The diagnostic criteria for Hypersensitivity pneumonitis (HP) have changed over time. Our aim is to apply a recent diagnostic algorithm to a historical series of patients diagnosed with HP to assess its distribution according to current diagnostic criteria and the diagnostic confidence achieved.
Research Design And Methods: Application to each patient the algorithm criteria.
Objective: To establish recommendations through the consensus of a Latin American experts panel on the use of the flash glucose monitoring system (fCGM) in people living with type 2 diabetes mellitus (T2DM) regarding the benefits and challenges of using the fCGM.
Methods: An executive committee of experts was created, comprised by a panel of fifteen physicians, including endocrinologists and internal medicine physicians, with expertise in management of adult patients with T2DM. The experts were from various countries: Colombia, Chile, Peru, Mexico, Argentina, and Brazil.
Life Sci Alliance
August 2024
Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, México
Diabetes complications such as nephropathy, retinopathy, or cardiovascular disease arise from vascular dysfunction. In this context, it has been observed that past hyperglycemic events can induce long-lasting alterations, a phenomenon termed "metabolic memory." In this study, we evaluated the genome-wide gene expression and chromatin accessibility alterations caused by transient high-glucose exposure in human endothelial cells (ECs) in vitro.
View Article and Find Full Text PDFCurr Biol
June 2024
Centro de Investigación Mariña, Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
A fundamental question in dinosaur evolution is how they adapted to long-term climatic shifts during the Mesozoic and when they developed environmentally independent, avian-style acclimatization, becoming endothermic. The ability of warm-blooded dinosaurs to flourish in harsher environments, including cold, high-latitude regions, raises intriguing questions about the origins of key innovations shared with modern birds, indicating that the development of homeothermy (keeping constant body temperature) and endothermy (generating body heat) played a crucial role in their ecological diversification. Despite substantial evidence across scientific disciplines (anatomy, reproduction, energetics, biomechanics, osteohistology, palaeobiogeography, geochemistry, and soft tissues), a consensus on dinosaur thermophysiology remains elusive.
View Article and Find Full Text PDFJ Ultrasound Med
September 2024
Department of Dermatology, Faculty of Medicine, Universidad de Chile, Santiago, Chile.
Objectives: To detect ultrasonographic anatomical alterations in all the skin layers in patients with vitiligo.
Methods: A prospective observational color Doppler ultrasound study was performed in nonsegmental face and/or neck vitiligo patients without a history of previous treatments. Two sites, a lesional area and a contralateral clinically healthy region, were ultrasonographically studied and compared in the same patient.
JAC Antimicrob Resist
June 2024
Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, RMSB Room 2089 1600 NW 10 Avenue, Miami, FL 33136, USA.
Background: Microorganisms tend to rely on close relationships with other species to survive. Consequently, biofilms formed by interactions of different species have been shown to delay the wound healing process. Studies suggest these mixed-population infections contribute to the development of drug resistance and inhibition of host immune response.
View Article and Find Full Text PDFSci Rep
May 2024
Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Avenida República 239, Santiago, Chile.
Biomaterial scaffolds play a pivotal role in the advancement of cultured meat technology, facilitating essential processes like cell attachment, growth, specialization, and alignment. Currently, there exists limited knowledge concerning the creation of consumable scaffolds tailored for cultured meat applications. This investigation aimed to produce edible scaffolds featuring both smooth and patterned surfaces, utilizing biomaterials such as salmon gelatin, alginate, agarose and glycerol, pertinent to cultured meat and adhering to food safety protocols.
View Article and Find Full Text PDFEur J Pharmacol
July 2024
Laboratorio de Farmacología, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, 9170022, Chile; Unidad de Nanoseguridad, Centro de Nanociencia y Nanotecnología, CEDNNA, Santiago, Chile. Electronic address:
Endothelial cells express multiple receptors mediating estrogen responses; including the G protein-coupled estrogen receptor (GPER). Past studies on nitric oxide (NO) production elicited by estrogens raised the question whether 17-β-estradiol (E2) and natural phytoestrogens activate equivalent mechanisms. We hypothesized that E2 and phytoestrogens elicit NO production via coupling to distinct intracellular pathways signalling.
View Article and Find Full Text PDFEur Heart J Cardiovasc Imaging
August 2024
Division of Cardiology, Texas Children's Hospital, 6651 Main Street MC-E1920, Houston, TX 77030, USA.
Aims: Data on mitral annular disjunction (MAD) in children with Marfan syndrome (MFS) are sparse. To investigate the diagnostic yield of MAD by echocardiography and cardiac magnetic resonance imaging (CMR), its prevalence and progression during childhood.
Methods And Results: We included patients <21 years old with MFS, defined by 2010 Ghent criteria and a pathogenic FBN1 variant or ectopia lentis.
J Chem Phys
May 2024
Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
We present new results on the underlying guest-host interactions and spectral characterization of a CO2 molecule confined in the cages of the sI clathrate hydrate. Such types of porous solids raise computational challenges, as they are of practical interest as gas storage/capture materials. Accordingly, we have directed our efforts toward addressing their modeling in a proper manner, ensuring the quality of the input data and the efficiency of the computational approaches.
View Article and Find Full Text PDFBMC Chem
May 2024
Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador.
Pentachlorophenol is a pesticide widely known for its harmful effects on sewage, causing harm to the environment. In previous studies, our group identified adsorption as a crucial factor in catalytic ozonation processes, and subsequent observations revealed the catalyst's role in reducing toxicity during degradation. In this research, we quantified organochlorine intermediates and low molecular weight organic acids generated under optimal pH conditions (pH 9), with and without the catalyst.
View Article and Find Full Text PDFAm J Physiol Endocrinol Metab
July 2024
Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
Adipose tissue metabolism is actively involved in the regulation of energy balance. Adipose-derived stem cells (ASCs) play a critical role in maintaining adipose tissue function through their differentiation into mature adipocytes (Ad). This study aimed to investigate the impact of an obesogenic environment on the epigenetic landscape of ASCs and its impact on adipocyte differentiation and its metabolic consequences.
View Article and Find Full Text PDFNat Med
July 2024
Department of Nutritional Sciences, King's College London, London, UK.
Nat Commun
May 2024
University of Bristol, Bristol Research Initiative for the Dynamic Global Environment, School of Geographical Sciences, Bristol, UK.
The transition from a humid green Sahara to today's hyperarid conditions in northern Africa ~5.5 thousand years ago shows the dramatic environmental change to which human societies were exposed and had to adapt to. In this work, we show that in the 620,000-year environmental record from the Chew Bahir basin in the southern Ethiopian Rift, with its decadal resolution, this one thousand year long transition is particularly well documented, along with 20-80 year long droughts, recurring every ~160 years, as possible early warnings.
View Article and Find Full Text PDFMol Cancer Ther
September 2024
Division of Pediatric Hematology and Oncology, Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, Alabama.
Oncolytic virotherapy or immunovirotherapy is a strategy that utilizes viruses to selectively infect and kill tumor cells while also stimulating an immune response against the tumor. Early clinical trials in both pediatric and adult patients using oncolytic herpes simplex viruses (oHSV) have demonstrated safety and promising efficacy; however, combinatorial strategies designed to enhance oncolysis while also promoting durable T-cell responses for sustaining disease remission are likely required. We hypothesized that combining the direct tumor cell killing and innate immune stimulation by oHSV with a vaccine that promotes T cell-mediated immunity may lead to more durable tumor regression.
View Article and Find Full Text PDFInd Eng Chem Res
May 2024
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K.
We demonstrate the application of a recurrent neural network (RNN) to perform multistep and multivariate time-series performance predictions for stirred and static mixers as exemplars of complex multiphase systems. We employ two network architectures in this study, fitted with either long short-term memory and gated recurrent unit cells, which are trained on high-fidelity, three-dimensional, computational fluid dynamics simulations of the mixer performance, in the presence and absence of surfactants, in terms of drop size distributions and interfacial areas as a function of system parameters; these include physicochemical properties, mixer geometry, and operating conditions. Our results demonstrate that while it is possible to train RNNs with a single fully connected layer more efficiently than with an encoder-decoder structure, the latter is shown to be more capable of learning long-term dynamics underlying dispersion metrics.
View Article and Find Full Text PDFJ Natl Cancer Inst
August 2024
Department of Health Disparities Research, Division of Cancer Prevention and Population Sciences, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Background: Physical activity improves physical and psychological health in cancer survivors. This study evaluated Active Living After Cancer (ALAC), a community-based program to improve physical activity, physical function, and quality of life (QOL) in minority and medically underserved cancer survivors and their caregivers.
Methods: Participants completed 12 weekly ALAC sessions and assessments of physical activity, physical functioning, and QOL at baseline and follow-up (week 12).
Angew Chem Int Ed Engl
July 2024
Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain.
In this minireview we survey the challenges and strategies in gold redox catalysis. Gold's reluctance to oxidative addition reactions due to its high redox potential limits its applicability. Initial attempts to overcome this problem focused on the use of sacrificial external oxidants in stoichiometric amounts to bring Au(I) compounds to Au(III) reactive species.
View Article and Find Full Text PDFTex Heart Inst J
April 2024
Department of Pediatrics, Division of Cardiology, Baylor College of Medicine, Houston, Texas.
Background: Atrial tachyarrhythmias are common and difficult to treat in adults with congenital heart disease. Dronedarone has proven effective in patients without congenital heart disease, but data are limited about its use in adults with congenital heart disease of moderate to great complexity.
Methods: A single-center, retrospective chart review of 21 adults with congenital heart disease of moderate to great complexity who were treated with dronedarone for atrial tachyarrhythmias was performed.
AJNR Am J Neuroradiol
September 2024
From the Department of Radiology (S.G., N.K., J.S., C.T., C.B.), Case Western Reserve University School of Medicine, Cleveland, Ohio
Biol Res
April 2024
Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.
Background: Disseminated neoplasia (DN) is a proliferative cell disorder of the circulatory system of bivalve mollusks. The disease is transmitted between individuals and can also be induced by external chemical agents such as bromodeoxyuridine. In Mya arenaria, we have cloned and characterized an LTR-retrotransposon named Steamer.
View Article and Find Full Text PDFDrugs
May 2024
Bascom Palmer Eye Institute, University of Miami, 900 NW 17th St, Miami, FL, 33136, USA.
Mol Biol Rep
April 2024
Department of Histology, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, 64460, NL, Mexico.
Osteoarthritis Cartilage
August 2024
Pain Centre Versus Arthritis, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, United Kingdom; NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, United Kingdom; School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, United Kingdom. Electronic address:
Objective: To examine associations between serum oxylipins, which regulate tissue repair and pain signalling, and knee pain/radiographic osteoarthritis (OA) at baseline and knee pain at 3 year follow-up.
Method: Baseline, and 3 year follow-up, knee pain phenotypes were assessed from 154 participants in the Knee Pain in the Community (KPIC) cohort study. Serum and radiographic Kellgren and Lawrence (KL) and Nottingham line drawing atlas OA scores were collected at baseline.