89,731 results match your criteria: "Chile; Center for Genome Regulation Fondap 15090007[Affiliation]"

Introduction: Junctional epidermolysis bullosa (JEB) is a rare genetic disease manifesting with skin and mucosal blistering. As part of the JEB, patients present with syndromic amelogenesis imperfecta (AI). Reports have described external crown resorption (ECR) in the teeth of patients with JEB, but its prevalence is unknown.

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Sustainability in sample preparation.

Anal Bioanal Chem

January 2025

Affordable and Sustainable Sample Preparation (AS2P) Research Group, Departamento de Química Analítica, Instituto Químico para la Energía y el Medioambiente IQUEMA, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071, Córdoba, Spain.

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Ion homeostasis is a crucial process in plants that is closely linked to the efficiency of nutrient uptake, stress tolerance and overall plant growth and development. Nevertheless, our understanding of the fundamental processes of ion homeostasis is still incomplete and highly fragmented. Especially at the mechanistic level, we are still in the process of dissecting physiological systems to analyse the different parts in isolation.

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The European Union receives thousands of unaccompanied irregular migrant minors every year, but little is known about their life experiences during the migration process. The aim of this study is to describe their experiences as minors when they arrived in Spain in small boats, which will help to understand their psychosocial and health needs. A descriptive qualitative study was undertaken.

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What Are the Barriers, Facilitators and Interventions Targeting Help-Seeking Behaviours for Common Mental Health Problems in Adolescents? A Systematic Review.

Focus (Am Psychiatr Publ)

January 2025

Child and Adolescent Mental Health Service, Children's Hospital Dr. Roberto del Río, Santiago, Chile (Velasco); Public Health School, Faculty of Medicine, University of Chile, Santiago, Chile (Cruz); División of Psychiatry, University College London, London, UK (Billings, Rowe); Camden and Islington Mental Health Foundation Trust, London, UK (Jimenez).

Background: Increasing rates of mental health problems among adolescents are of concern. Teens who are most in need of mental health attention are reluctant to seek help. A better understanding of the help-seeking in this population is needed to overcome this gap.

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Introduction: The importance of protein amyloidogenesis, associated with various diseases and functional roles, has driven the creation of computational predictors of amyloidogenicity. The accuracy of these predictors, particularly those utilizing artificial intelligence technologies, heavily depends on the quality of the data.

Methods: We built Cross-Beta DB, a database containing high-quality data on known cross-β amyloids formed under natural conditions.

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Effect of temperature on circadian clock functioning of trees in the context of global warming.

New Phytol

January 2025

Instituto de Investigaciones Forestales y Agropecuarias Bariloche, Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Bariloche - Consejo Nacional de Investigaciones Científicas y Técnicas (INTA EEA Bariloche-CONICET), San Carlos de Bariloche, Río Negro, R8403DVZ, Argentina.

Plant survival in a warmer world requires the timely adjustment of biological processes to cyclical changes in the new environment. Circadian oscillators have been proposed to contribute to thermal adaptation and plasticity. However, the influence of temperature on circadian clock performance and its impact on plant behaviour in natural ecosystems are not well-understood.

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Sociodemographic profiles of Indigenous households in the 1991, 2000, and 2010 censuses.

Cien Saude Colet

December 2024

Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz. Rio de Janeiro RJ Brasil.

This article analyzes the sociodemographic composition of the Indigenous population in Brazil in the 1991, 2000, and 2010 demographic censuses, in addition to investigating inequalities in access to basic sanitation and electricity based on the 2010 Census. A methodology is proposed that classifies households with Indigenous residents as "homogeneous", "mixed" with an Indigenous in the category "household head", and mixed with a non-Indigenous in the category "household head". Regional and situational differences overlapped with differences by type of household and location, with better conditions in urban than rural areas and in the Southeast and South.

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Brainstem C1 neurons mediate heart failure decompensation and mortality during acute salt loading.

Cardiovasc Res

December 2024

Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O'Higgins 340, Santiago 8331150, Chile.

Aims: Heart failure (HF) is an emerging epidemic worldwide. Despite advances in treatment, the morbidity and mortality rate of HF remain high, and the global prevalence continues to rise. Common clinical features of HF include cardiac sympathoexcitation, disordered breathing, and kidney dysfunction; kidney dysfunction strongly contributes to sodium retention and fluid overload, leading to poor outcomes of HF patients.

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Background: Most of the evidence on risk factors for COVID-19 complications comes from North America or Europe with very little research from Latin-America. We aimed to evaluate the association between sociodemographic, clinical factors and the risk of COVID-19 complications among adults in Chile, the fifth Latin-American country with more COVID-19 reported cases since de beginning of the Pandemic.

Methods: A retrospective population-based cohort study using data from electronic health records from a large Primary Care Network, linked to national hospital, immunization, Covid-19 PCR surveillance, mortality and birth records.

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Epibiotic bacterial community composition varies during different developmental stages of Octopus mimus: Study of cultivable representatives and their secondary metabolite production.

PLoS One

January 2025

Laboratorio de Ecología Molecular y Microbiología Aplicada, Departamento de Ciencias Farmacéuticas, Universidad Católica del Norte, Antofagasta, Chile.

Marine microbial communities colonizing the skin of invertebrates constitute the primary barrier between host and environment, potentially exerting beneficial, neutral, or detrimental effects on host fitness. To evaluate the potential contribution of epibiotic bacteria to the survival of early developmental stages of Octopus mimus, bacterial isolates were obtained from eggs, paralarvae, and adults. Their enzymatic activities were determined, and antibacterial properties were assessed against common marine pathogens.

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Curcumin Improves Hippocampal Cell Bioenergetics, Redox and Inflammatory Markers, and Synaptic Proteins, Regulating Mitochondrial Calcium Homeostasis.

Neurotox Res

January 2025

Laboratory of Neurobiology of Aging, Centro Científico y Tecnológico de Excelencia Ciencia & Vida, Fundación Ciencia & Vida, Avenida del Valle Norte 725, Huechuraba, Santiago, 8580702, Chile.

Mitochondria produces energy through oxidative phosphorylation (OXPHOS), maintaining calcium homeostasis, survival/death cell signaling mechanisms, and redox balance. These mitochondrial functions are especially critical for neurons. The hippocampus is crucial for memory formation in the brain, which is a process with high mitochondrial function demand.

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Article Synopsis
  • This study used wind tunnel experiments to analyze wind speed distribution around two high-rise buildings on a tropical urban campus.
  • The vertical wind profiles were affected by wind direction, building arrangement, and geometry, revealing how these factors influenced wind flow interactions.
  • Findings indicated that building layout significantly impacts wind speeds at canopy height, with vortex influences extending to distances proportional to each building's height.
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The authors reply.

Crit Care Med

January 2025

Translational Research in Respiratory Medicine, Hospital Universitari Arnau de Vilanova-Santa Maria, Biomedical Research Institute of Lleida (IRBLleida), Lleida, Spain.

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Neurogastroenterology and motility disorders in patients with cirrhosis.

Hepatol Commun

January 2025

Departamento De Gastroenterología, Escuela De Medicina, Pontificia Universidad Católica De Chile, Santiago, Chile.

Neurogastroenterology and motility disorders are complex gastrointestinal conditions that are prevalent worldwide, particularly affecting women and younger individuals. These conditions significantly impact the quality of life of people suffering from them. There is increasing evidence linking these disorders to cirrhosis, with a higher prevalence compared to the general population.

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Background: Cardiopulmonary bypass (CPB) induces profound physiological changes that may alter the pharmacokinetics of methadone. We aimed to describe the pharmacokinetics of an intravenous bolus of methadone racemate in adult patients undergoing heart surgery with CPB.

Methods: We prospectively studied 29 patients aged 45 to 75 years scheduled for cardiac surgery with CPB who received methadone 0.

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Objective: The inflammatory responses from synovial fibroblasts and macrophages and the mitochondrial dysfunction in chondrocytes lead to oxidative stress, disrupt extracellular matrix (ECM) homeostasis, and accelerate the deterioration process of articular cartilage in osteoarthritis (OA). In recent years, it has been proposed that mesenchymal stromal cells (MSC) transfer their functional mitochondria to damaged cells in response to cellular stress, becoming one of the mechanisms underpinning their therapeutic effects. Therefore, we hypothesize that a novel cell-free treatment for OA could involve direct mitochondria transplantation, restoring both cellular and mitochondrial homeostasis.

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BK channels mediate a presynaptic form of mGluR-LTD in the neonatal hippocampus.

Proc Natl Acad Sci U S A

January 2025

Instituto de Neurociencias, Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso 2340000, Chile.

BK channels can control neuronal function, but their functional relevance in activity-dependent changes of synaptic function remains elusive. Here, we report that repetitive low-frequency stimulation activates BK channels through 12(S)HPETE, an arachidonic acid metabolite, produced downstream of postsynaptic metabotropic glutamate receptors (mGluRs) to trigger long-term depression (LTD) at CA3-CA1 synapses in hippocampal slices from P7-P10 mice. Activation of BK channels is subunit specific, as paxilline but not iberiotoxin blocked mGluR-LTD.

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Optogenetic control of horizontally acquired genes prevent stuck fermentations in yeast.

Microbiol Spectr

January 2025

Laboratorio de Genómica Funcional, Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.

Nitrogen limitations in the grape must be the main cause of stuck fermentations during the winemaking process. In , a genetic segment known as region A, which harbors 12 protein-coding genes, was acquired horizontally from a phylogenetically distant yeast species. This region is mainly present in the genome of wine yeast strains, carrying genes that have been associated with nitrogen utilization.

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Chronic intermittent hypoxia (CIH), the main feature of obstructive sleep apnea, heightened chemosensory discharges of the carotid body (CB), which contributes to potentiate the ventilatory hypoxic response and elicits hypertension. We aimed to determine: 1) whether the persistence of cardiorespiratory alterations found in long-term CIH depend on the inputs from the CB and, 2) in what extension the activation of glial cells and neuroinflammation in the caudal region of the nucleus of the Solitary Tract (NTS) requires functional CB chemosensory activity. To evaluate these hypotheses, we exposed male mice to CIH for 60 days.

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Purpose: This scoping review aimed to explore the use of volitional voice tasks in assessing swallowing-related outcomes and to evaluate their therapeutic impact on swallowing disorders, including their effects on swallowing biomechanics.

Method: This scoping review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews guidelines. A literature search was performed across multiple databases (PubMed, Web of Science, and Scopus), and additional records were identified through manual searches.

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Genetic and neurobiological aspects of psychosis in major neurocognitive disorder.

Medwave

January 2025

Departamento de Psiquiatría, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile.

Psychiatric symptoms are frequent in neurocognitive disorders and dementias. Psychotic symptoms, mainly hallucinations and delusions, may appear in up to 50% of cases, influencing morbidity and mortality. Genetic, neurobiological, and environmental factors are involved in their onset.

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Good Practices for Health Technology Assessment Guideline Development: A Report of the Health Technology Assessment International, HTAsiaLink, and ISPOR Special Task Force.

Value Health

October 2024

Health Intervention and Technology Assessment Program (HITAP), Ministry of Public Health, Nonthaburi, Thailand; Saw Swee Hock School of Public Health, National University of Singapore, Singapore.

Objectives: Health technology assessment (HTA) guidelines are intended to support successful implementation of HTA by enhancing consistency and transparency in concepts, methods, process, and use, thereby enhancing the legitimacy of the decision-making process. This report lays out good practices and practical recommendations for developing or updating HTA guidelines to ensure successful implementation.

Methods: The task force was established in 2022 and comprised experts and academics from various geographical regions, each with substantial experience in developing HTA guidelines for national health policymaking.

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Challenges and Opportunities for Adult Vaccine Coverage: Insights for Healthcare Professionals Focusing on Herpes Zoster in Mexico.

Vaccines (Basel)

December 2024

GSK México, Torre Mitikah Piso 19 y 20, Circuito Interior Avenida Río Churubusco 601, Col. Xoco. Alc. Benito Juárez, Mexico City 03330, Mexico.

Herpes zoster (HZ) is a common disease in older adults and immunocompromised patients, and is frequently associated with long-term complications that impact quality of life. Fortunately, more than one vaccine against HZ is now available in Mexico. Two expert consensus groups discussed adult vaccination strategies in Mexico, focusing on HZ in older adults and immunocompromised individuals; their insights are reported here.

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