119,023 results match your criteria: "Argentina; Institute of Oncology of Rosario[Affiliation]"

Environmental stress differentially affects phenotypic modularity and fluctuating asymmetry in generalist and specialist cactophilic Drosophila.

J Evol Biol

January 2025

Laboratorio de Ecotono, Instituto de Investigaciones em Biodiversidad y Medioambiente (INIBIOMA), CONICET- Universidad Nacional del Comahue, San Carlos de Bariloche, Río Negro, Argentina.

Modularity and developmental (in)stability have the potential to influence phenotype production and, consequently, the evolutionary trajectories of species. Depending on the environmental factors involved and the buffering capacity of an organism, different developmental outcomes are expected. Cactophilic Drosophila species provide an established eco-evolutionary model with well-studied ecological conditions, making them ideal for studying these phenomena.

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Revisiting the neuroanatomy of Massetognathus pascuali (Eucynodontia: Cynognathia) from the early Late Triassic of South America using Neutron Tomography.

Naturwissenschaften

January 2025

Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Av. Roraima 1000, 97105-900, Santa Maria, RS, Brazil.

This paper analyzes the paleoneurology (cranial endocast and maxillary canal) of Massetognathus pascuali, an iconic non-mammaliaform cynodont from the early Late Triassic of South America, using Neutron Tomography. The application of neutron tomography holds the potential for uncovering more refined anatomical and quantitative data. The newly examined cranial endocast shows a forebrain with a tubular shape without an interhemispheric fissure, presence of a pineal body (with a closed parietal foramen), and a marked unossified zone.

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Background: Epidermolysis bullosa (EB) is a group of rare, severe, genetic disorders characterised by persistent skin fragility and open wounds. EB manifests as cutaneous and mucosal blistering, erosions and impaired wound healing.

Objectives: To determine the long-term efficacy, tolerability and safety of Oleogel-S10 (birch bark extract) in dystrophic (DEB) and junctional (JEB) EB in the 24-months open-label phase (OLP) of the EASE study.

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Rehabilitation is often complex for persons with transfemoral amputation, and poor socket fit is one of the main factors affecting gait re-education, rehabilitation, and quality of life. The present study systematically reviewed the literature to test whether the subischial socket provides better outcomes in comfort, quality of life, and mobility than other transfemoral sockets. Systematic review and meta-analysis.

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The mobility of polypeptide chains in cow femur bones controlled by an electric field.

Phys Chem Chem Phys

January 2025

CONICET-UNR, Laboratorio de Materiales (LEIM), Escuela de Ingeniería Eléctrica, Centro de Tecnología e Investigación Eléctrica (CETIE), Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Avda. Pellegrini 250, 2000 Rosario, Argentina.

The influence on the mobility of polypeptide chains caused by strain misfit due to molecular electric dipole distortions under applied electric fields up to 769 kV m, in cow cortical femur samples annealed at 373 K, 423 K, and 530 K, is determined. The behaviour of strain misfit as a function of the electric field strength is determined from a mean-field model based on the Eshelby theory. In addition, Friedel's model for describing the mobility of dislocations in continuum media has been modified to determine the interaction energy between electrically generated obstacles and the polypeptide chains.

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Multiple physiological response analyses of Chlorella vulgaris exposed to silver nanoparticles, ciprofloxacin, and their combination.

Environ Toxicol Chem

January 2025

Laboratorio de Ecotoxicología, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral (UNL), Santa Fe, Argentina.

The combination of silver nanoparticles (AgNPs) and ciprofloxacin (CIP) can be considered an alternative to combat multidrug-resistant microbial infections. However, knowledge about their combined toxicity is scarce after being released in an aquatic environment. The present study evaluated the individual toxicity of AgNPs and CIP and their combined toxicity on the unicellular green microalga Chlorella vulgaris, evaluating cellular responses and conducting metabolomic analysis.

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Aortic dilatation is a severe pathology that increases the risk of rupture and its hemodynamics could be accurately assessed by using the 4D flow cardiovascular magnetic resonance (CMR) technique but flow assessment under complex flow patterns require validation. The aim of this work was to develop an in vitro system compatible with CMR to assess the accuracy of volume flow measurements in dilated aortas. Approach.

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Determining event-related desynchronization onset latency of foot dorsiflexion in people with multiple sclerosis using the cluster depth tests.

Biomed Phys Eng Express

January 2025

Universidad Nacional de Entre Ríos Facultad de Ingeniería, ruta 11 km 10, Oro Verde, Entre Ríos, 3101, ARGENTINA.

Multiple sclerosis (MS) is a disorder in which the body's immune system attacks structures of the central nervous system, resulting in lesions that can occur throughout the brain and spinal cord. Cortical lesions, in particular, can contribute to motor dysfunction. Walking disability is reported as the main impairment by people with MS (pwMS), often due to limited ankle movement.

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Objective: Inclusion of individualised electrical conductivities of head tissues is crucial for the accuracy of electrical source imaging techniques based on electro/magnetoencephalography and the efficacy of transcranial electrical stimulation. Parametric electrical impedance tomography (pEIT) is a method to cheaply and non-invasively estimate them using electrode arrays on the scalp to apply currents and measure the resulting potential distribution. Conductivities are then estimated by iteratively fitting a forward model to the measurements, incurring a prohibitive computational cost that is generally lowered at the expense of accuracy.

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Purpose: The availability of drugs and national public policies for patients with rare cancers, including sarcomas, varies in different parts of the world.

Methods: In this manuscript, we have conducted a comprehensive analysis to evaluate rare cancer policies in Latin American countries' national policy documents. Additionally, we have reviewed the approvals for sarcoma drugs in selected Latin American countries and compared them with US Food and Drug Administration (FDA) and European Medicines Agency (EMA) approvals.

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Lactation, mastitis, and probiotics.

Arch Argent Pediatr

January 2025

Instituto de Lactología Industrial (INLAIN, CONICET-UNL), Faculty of Chemical Engineering, Universidad Nacional del Litoral, Santa Fe, Argentina.

Exclusive breastfeeding during the first six months of life, and prolonged with complementary feeding until 2 years of age or more, is the best nutritional approach in the first stage of life. Mastitis is a pathology that can jeopardize the continuity of breastfeeding. Different methods have been proposed for the prevention and treatment of mastitis, including probiotics.

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Introduction. Middle-ear ventilation tubes are commonly placed in pediatric patients because of the high frequency of otitis media. Although avoidance of water activity has been recommended to prevent otorrhea, studies indicate that exposure to water does not increase these episodes.

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Recurrent acute pancreatitis (RAP) affects 15-36% of children with acute pancreatitis (AP) and may progress to chronicity. To determine the etiology and evolution of RAP, a descriptive retrospective cohort study was conducted in patients aged 1-18 years. Twelve patients with RAP were included out of 79 with AP, and demographic, etiological, clinical, analytical, and imaging data were collected.

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Ultrasound-guided intercostal nerve injection in rabbit cadavers: Technique description and comparison with blind approach.

Vet Anaesth Analg

December 2024

Department of Comparative Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA. Electronic address:

Objective: To develop an ultrasound-guided technique for intercostal nerve blocks in rabbit cadavers and to compare the success rate and potential complications of this technique to blind injection.

Study Design: Prospective, randomized, blinded, descriptive experimental cadaveric study.

Animals: A group of nine adult domestic rabbit cadavers (body mass 1.

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Background: Heart failure with preserved ejection fraction (HFpEF) is a heterogeneous entity including patients with different phenotypes of near normal, normal, and supernormal left ventricular (LV) function.

Objectives: To assess the value of resting LV elastance (also known as force) with transthoracic echocardiography (TTE) to identify HFpEF phenotypes.

Methods: In a prospective, observational, multicenter study, 2380 HFpEF patients were recruited from July 2016 to May 2024.

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Neutral mesoionic carbenes (MICs) based on a 1,2,3-triazole core have had a strong impact on various branches of chemistry such as homogeneous catalysis, electrocatalysis, and photochemistry/photophysics. We present here the first general synthesis of anionic mesoionic carbenes (anMICs) based on a 1,2,3-triazole core and a borate backbone. The free anMIC is stable in solution under an inert atmosphere at low temperatures, and can be stored for several weeks.

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Background And Objective: Lipedema is a commonly underdiagnosed chronic condition. This study aimed to evaluate liposuction techniques for lipedema by conducting a systematic review and presenting our experience. A case series study and a comprehensive review were conducted.

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Metabolic changes that allow artemisinin-resistant parasites to tolerate oxidative stress.

Front Parasitol

September 2024

Centro de Cálculo Científico de la Universidad de Los Andes (CeCalCULA), Universidad de Los Andes (ULA), Mérida, Venezuela.

Artemisinin-based treatments (ACTs) are the first therapy currently used to treat malaria produced by . However, in recent years, increasing evidence shows that some strains of are less susceptible to ACT in the Southeast Asian region. A data reanalysis of several omics approaches currently available about parasites of that have some degree of resistance to ACT was carried out.

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Background: Cardiovascular (CV) disease is a leading cause of death in pregnant women globally, especially in low- and middle-income countries including Latin America (LATAM), where there is lack of data on how cardiologists are trained in cardio-obstetrics (CO) and the practice patterns in the care of pregnant patients.

Objectives: The authors aimed to identify CO competency and practice patterns among LATAM general cardiologists.

Methods: An anonymous cross-sectional Google-based electronic survey was sent via email to clinical cardiologists through local American College of Cardiology chapters and CV societies.

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Background: Atrial septal defects (ASDs) are a common cause of congenital heart disease worldwide.

Objectives: The purpose of the study was to assess change over time in surgical outcomes for ASD repair and identify patient-level risk factors for adverse postoperative outcomes.

Methods: We analyzed cases of isolated ASD in patients <18 years from 2010 to 2020 from 71 sites participating in the International Quality Improvement Collaborative for Congenital Heart Disease.

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Introduction: Aseptic recalcitrant nonunion (ARNU) of the femur and tibia is an entity in which the absence of bony union, misalignment, and limb length discrepancies (LLD) coexist. Currently, the management of these cases lacks consensus. This study aimed to describe the bone union rate and deformity correction outcomes in patients with ARNU of the femur or tibia treated with the Induced Membrane Technique (IMT).

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A 31-year-old male with a plasmacytoid dendritic blast cell neoplasm.

Ecancermedicalscience

November 2024

Internal Medicine Service, Sanatorio Sagrado Corazón, Buenos Aires, CP 1039, Argentina.

Plasmacytoid blast dendritic cell neoplasm is a rare subtype of acute leukaemia that represents less than 1% of haematologic neoplasms. It is characterised by skin involvement and leukaemic dissemination in the rest of the body. The immunophenotype is represented by the expression of CD4, CD56 and CD123.

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Background: Hepatocellular carcinoma (HCC) is a significant health problem associated with several risk factors, increasingly driven by non-alcoholic steatohepatitis and metabolic syndrome. This association poses a challenge for the primary treatments of HCC, which may include immune checkpoint inhibitors and vascular endothelial growth factor inhibitors, due to their potential cardiotoxic effect. Therefore, it is imperative to balance the therapeutic effects of these agents with their potential cardiovascular adverse events.

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