89,894 results match your criteria: "Chile; Marine Energy Research & Innovation Center (MERIC). Santiago[Affiliation]"

Age-dependent phenotypes of cognitive impairment as sequelae of SARS-CoV-2 infection.

Front Aging Neurosci

January 2025

Laboratory for Brain Development, Modulation and Repair, Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health San Antonio, San Antonio, TX, United States.

Cognitive changes associated with PASC may not be uniform across populations. We conducted individual-level pooled analyses and meta-analyses of cognitive assessments from eight prospective cohorts, comprising 2,105 patients and 1,432 controls from Argentina, Canada, Chile, Greece, India, Italy, Russia, and the UK. The meta-analysis found no differences by country of origin.

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Background: GALOP investigators developed a prospective cooperative protocol for localized Ewing sarcoma (ES) incorporating interval-compressed chemotherapy (VDC/IE, vincristine, doxorubicin, cyclophosphamide/ifosfamide and etoposide). After completing conventional treatment, patients were randomized to 1 year of metronomic chemotherapy (vinblastine and cyclophosphamide).

Methods: Phase III randomized prospective trial.

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Background: Recent evidence from both randomized controlled trials and cohort studies in adults suggests that plasma remnant cholesterol (RC) levels predict cardiovascular disease. In children, studies are scarce, although high levels of RC might represent a marker of early atherosclerotic damage. Thus, the aim of this study was to explore the cardiometabolic risk associated with RC, which extends beyond low-density lipoprotein cholesterol (LDL-c) in children.

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Patients with estrogen receptor-positive (ER+), human epidermal growth factor receptor 2-negative (HER2-) primary breast cancer (BC) have low pathological complete response (pCR) rates with neoadjuvant chemotherapy. A subset of ER+/HER2- BC contains dense lymphocytic infiltration. We hypothesized that addition of an anti-programmed death 1 agent may increase pCR rates in this BC subtype.

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Twin reversed arterial perfusion (TRAP) sequence is an uncommon disease affecting monochorionic twin pregnancies. The diagnosis can be made by ultrasound allowing to plan optimal antenatal management. An electronic search was conducted from inception to July 2024 to systematically evaluate and compare the outcomes of different intrauterine interventions in this condition.

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Background: A recent advancement in velocity-based training involves estimating the maximum number of repetitions to failure (RTF) by analyzing the fastest velocity recorded within a set. A systematic review examining the fundamental characteristics of the RTF-velocity relationship is still lacking.

Purpose: This study aimed to (1) determine the basic properties of the RTF-velocity relationships (goodness of fit, reliability, and accuracy) and (2) offer guidance on implementing various methodological factors that can impact the RTF accuracy prediction.

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Chilean Mediterranean forest on the verge of collapse? Evidence from a comprehensive risk analysis.

Sci Total Environ

January 2025

Departamento de Ingeniería Geoespacial y Ambiental, Facultad de Ingeniería, Universidad de Santiago de Chile, Chile.

World forests are experiencing significant modification due to the confluence of climate change and deforestation, with Mediterranean forests facing particularly acute threats. The Chilean Sclerophyllous Mediterranean Forest is considered a world biodiversity hotspot, a restricted ecosystem type that is highly affected by global change drivers. Despite the high ecological and environmental importance of this ecosystem, an integrated assessment of its risk derived from climate and land-use change is lacking.

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Vertex

January 2025

Vertex Revista Argentina de Psiquiatría.

Reseña de la obra: Salud Mental y Psiquiatría en la práctica de Atención Primaria de la Salud, editada por Juan Pablo Giménez y Julia Acuña y Albert Botto. Instituto Milenio para la Investigación en Depresión y Personalidad, MIDAP, Santiago de Chile, 2024.

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The World Health Organization (WHO) highlights the importance of improving the design of public health interventions and policies by applying principles from the behavioral sciences. These sciences play a crucial role in modifying behaviors and addressing a wide range of health challenges, from pandemics and chronic diseases to the climate crisis. This article examines the transformative impact of behavioral sciences on public health promotion, focusing on the factors that influence decision-making and intervention strategies based on the six principles developed by the WHO Technical Advisory Group.

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Background: Frail elderly patients have a higher risk of postoperative morbidity and mortality. Prehabilitation is a potential intervention for optimizing postoperative outcomes in frail patients. We studied the impact of a prehabilitation program on length of stay (LOS) in frail elderly patients undergoing elective surgery.

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Reclassification of Salisediminibacterium haloalkalitolerans Sultanpuram et al. 2015 as a Later Heterotypic Synonym of Salisediminibacterium halotolerans Jiang et al. 2012.

Curr Microbiol

January 2025

Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education of Guizhou & School of Basic Medical Science & Institution of One Health Research, Guizhou Medical University, Guiyang, 561113, People's Republic of China.

In the present study, the taxonomic position of Salisediminibacterium haloalkalitolerans was evaluated by determining the 16S rRNA gene sequence similarity, genome relatedness, and phylogenetic analyses. The 16S rRNA gene sequences extracted from the genomes of Salisediminibacterium haloalkalitolerans 10nlg and Salisediminibacterium halotolerans DSM 26530 showed 100% similarity, supporting their classification as the same species. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between S.

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mTOR Ser1261 is an AMPK-dependent phosphosite in mouse and human skeletal muscle not required for mTORC2 activity.

FASEB J

January 2025

August Krogh Section for Human and Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.

The kinases AMPK, and mTOR as part of either mTORC1 or mTORC2, are major orchestrators of cellular growth and metabolism. Phosphorylation of mTOR Ser1261 is reportedly stimulated by both insulin and AMPK activation and a regulator of both mTORC1 and mTORC2 activity. Intrigued by the possibilities that Ser1261 might be a convergence point between insulin and AMPK signaling in skeletal muscle, we investigated the regulation and function of this site using a combination of human exercise, transgenic mouse, and cell culture models.

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Human papillomavirus (HPV) infections rank as the most prevalent sexually transmitted infections globally. The Brazilian Ministry of Health recommends the topical use of 70%-90% trichloroacetic acid (TAA) for treating condyloma acuminata, yet this method suffers from a high recurrence rate of 36% and requires roughly six applications. Topical photodynamic therapy (PDT) has shown effectiveness in targeting subclinical lesions, but it also necessitates multiple sessions for complete lesion clearance.

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Background: Patients on maintenance hemodialysis (HD) face complications due to the accumulation of protein-bound uremic toxins, such as advanced glycation end products (AGEs), which contribute to inflammation, oxidative stress, and cardiovascular disease. Conventional HD techniques inadequately remove AGEs. This study evaluates the efficacy of the HA130 hemoadsorption cartridge combined with high-flux HD (HF-HD) in enhancing AGE removal.

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Objectives: This experimental study compared the accuracy of implant insertion using the free-hand (FH) technique, static computer-aided surgery (S-CAIS), or dynamic computer-assisted surgery (D-CAIS) and to evaluate the correlation of learning curves between surgeons' experience and surgical time.

Materials And Methods: Thirty-six models were randomly assigned to three groups (FH, n = 12; S-CAIS, n = 12; D-CAIS, n = 12). Each model was planned to receive four implants in the maxillary anterior and posterior regions.

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Lingual artery thrombosis as a presentation of infective endocarditis in a pregnant patient: a case report.

Eur Heart J Case Rep

January 2025

Department of Cardiology, Clínica Alemana de Santiago, Avenida Manquehue Norte #1499, 7650568 Vitacura, Chile.

Background: Infective endocarditis during pregnancy is a rare condition that compromises the health of both the mother and the foetus, presenting high rates of morbidity and mortality. The clinical manifestations of this disease are varied, with embolic phenomena being a frequent presentation.

Case Summary: We report the case of a Hispanic 37-year-old patient, at 29 weeks of pregnancy, with no known cardiovascular history, who presented with 48 h of sudden mandibular and lingual pain.

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Phytochemical investigation and assessment of the anti-inflammatory activity of four taxa growing in Turkey.

Front Pharmacol

January 2025

Centro de Investigación en Ingeniería de Materiales, Facultad de Medicina y Ciencias de la Salud, Universidad Central de Chile, Santiago, Chile.

Introduction: L. has been known as "hogweed" and used for inflammatory diseases, including fever, enteritis, and bronchitis, for many years worldwide. The genus is also prominently recognized for its high content of coumarins, which are considered a significant group of natural compounds known for their noteworthy anti-inflammatory properties.

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Biological activities of lichen extracts and UHPLC-ESI-QTOF-MS analysis of their secondary metabolites.

Front Pharmacol

January 2025

Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.

This research was designed to investigate the metabolite profiling, phenolics content, and the trypanocidal, nematicidal, antibacterial, antifungal, and free radical scavenging properties of Motyka. The air-dried material was extracted successively with dichloromethane and methanol (UlMeOH). Two phases were obtained from the extract with dichloromethane, one soluble in methanol (UlDCM-s) and the other insoluble (UlDCM-i).

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Our article deals with the governance of responsible research and innovation (RRI) and aims to set out a first psychologically grounded decision-theoretic method for the governance of RRI. We approach the governance of RRI as a multicriteria group decision analysis problem of delivering social welfare in an innovation ecosystem. Following such a methodological approach, we develop a psychologically grounded multicriteria group decision analysis method that integrates in its value function the main psychological effects captured in the value function of prospect theory as the main theory of individual decision-making under risk.

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Polarity and migration of cranial and cardiac neural crest cells: underlying molecular mechanisms and disease implications.

Front Cell Dev Biol

January 2025

Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.

The Neural Crest cells are multipotent progenitor cells formed at the neural plate border that differentiate and give rise to a wide range of cell types and organs. Directional migration of NC cells and their correct positioning at target sites are essential during embryonic development, and defects in these processes results in congenital diseases. The NC migration begins with the epithelial-mesenchymal transition and extracellular matrix remodeling.

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Background: The prevalence of colorectal cancer (CRC) in patients with ulcerative colitis (UC) is higher than in the general population, in Latin America there is a progressive increase of UC, and information about CRC screening in inflammatory bowel disease (IBD) is scarce. The aim of this study was to analyze the findings of endoscopic surveillance of CRC in patients with IBD according to available technology.

Methods: Multicenter, cross-sectional, analytical study conducted in Latin American countries, in patients with UC, predominantly with more than 8 years of diagnosis and different degrees of disease activity.

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Determinantes sociales del testeo de VIH en Chile: Resultados a partir de la Encuesta Nacional de Salud, Sexualidad y Género 2022-2023.

Glob Health Promot

January 2025

Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Chile.

Dado el aumento constante en la tasa de incidencia del VIH en Chile, se han impulsado estrategias de prevención conjunta, con la promoción del testeo de VIH como uno de sus pilares fundamentales. El presente estudio se propuso identificar los determinantes sociales del testeo de VIH en la población chilena a partir de datos secundarios provenientes de la Encuesta Nacional de Salud, Sexualidad y Género 2022-2023. Se contó con un diseño transversal y una muestra representativa de 20392 adultos chilenos residentes en sectores urbanos.

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Echo-Biometry Assessment of a Quadruple Pregnancy in a Captive Capybara.

Vet Radiol Ultrasound

January 2025

Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, Sao Paulo, Brazil.

A 5-year-old female capybara, conditioned ex situ before mating, was monitored by ultrasound to establish prenatal growth and assess fetal echo-biometric variables. The records were taken twice weekly until delivery (i.e.

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Precise stacking of distinct two-dimensional (2D) rigid slabs to build heterostructures has renewed the portfolio of 2D materials, e.g., magic-angle graphene, due to the emergence of exotic physical properties.

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