Publications by authors named "Valencia A"

Background: Proximal femoral varus osteotomy (PFVO) is commonly performed to improve femoral head containment and decrease deformity in Legg-Calve-Perthes disease (LCPD). Little is known about how PFVO impacts the quality of life after surgery. The purpose of this study was to determine the longitudinal changes to patient-reported physical, mental, and social health measures after PFVO.

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Objective: To understand the influence of acute alcohol consumption on the recall and recognition of warning messages.

Method: Participants ( = 82) were randomly assigned to a condition where they consumed alcoholic beverages (target blood alcohol concentrations of 0.06%-0.

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Objectives: To investigate clinical characteristics, symptom profile, testing practices, treatment patterns and quality of life (QoL) among patients with pulmonary arterial hypertension (PAH) in Latin America.

Design: Data from the Adelphi Real World PAH Disease Specific Programme, a cross-sectional survey with retrospective data collection.

Setting: University/teaching hospital, regional centres, private practices and government institutions in Argentina, Brazil, Colombia and Mexico.

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Digital twins represent a key technology for precision health. Medical digital twins consist of computational models that represent the health state of individual patients over time, enabling optimal therapeutics and forecasting patient prognosis. Many health conditions involve the immune system, so it is crucial to include its key features when designing medical digital twins.

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  • The coupling between electronic excitations and vibrational modes in organic semiconductors impacts their optical and charge transport properties.
  • Highly ordered crystalline films, like those made from perfluoropentacene (PFP), allow for detailed analysis through techniques like polarization-resolved time-domain vibrational spectroscopy.
  • The study reveals that while a high-frequency in-plane deformation mode is polarization-insensitive, a lower-frequency out-of-plane ring bending mode's coupling is significantly influenced by molecular orientation, highlighting the effects of solid-state interactions in these materials.
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Precision medicine aims at tailoring treatments to individual patient's characteristics. In this regard, recognizing the significance of sex and gender becomes indispensable for meeting the distinct healthcare needs of diverse populations. To this end, continuing a trend of improving data quality observed since 2014, the European Genome-phenome Archive (EGA) established a policy in 2018 that mandates data providers to declare the sex of donor samples, aiming to enhance data accuracy and prevent imbalance in sex classification.

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Background: The association between cancer and multiple sclerosis has long been investigated. Several studies and reviews have examined the risk of cancer among patients with multiple sclerosis treated with disease-modifying therapies (DMTs) but with conflicting results. This study will aim to investigate the association between DMTs for multiple sclerosis and subsequent cancer risk using research synthesis methods.

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  • - Digital breast tomosynthesis (DBT), when used with a synthetic 2D mammogram (S2D), exposes women to higher radiation but may enhance cancer detection compared to full-field digital mammography (FFDM) alone.
  • - A review of 17 studies, including 13 for meta-analysis, found that DBT plus S2D provided a higher cancer detection rate compared to FFDM alone, while also showing similar accuracy to DBT with FFDM.
  • - The findings suggest that integrating S2D with DBT in breast cancer screening is effective and maintains the safety and performance of the imaging process.
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  • Mitochondrial stress and inflammation are key players in chronic kidney disease (CKD), and while targeting mitochondrial metabolism may help, there's limited evidence on effectiveness in CKD patients.
  • A clinical trial with 25 CKD participants tested the effects of coenzyme Q10 (CoQ10) and nicotinamide riboside (NR) compared to a placebo, focusing on gene expression changes and biomarkers for inflammation and oxidative stress.
  • Results showed that NR improved metabolic and immune-related gene activity and bioenergetics, while CoQ10 positively affected inflammatory markers; both reduced oxidative stress indicators.
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This brief report expands the results of a prior efficacy study that examined the effect of a letter addressing prospective clients' motivation and expectations for outpatient gambling disorder treatment on initial session attendance. The results of that efficacy study indicated more clients attended the initial session when receiving the letter (77%) compared to receiving a reminder telephone call (51%). The present study examines the effectiveness of messages addressing prospective clients' motivation and expectations for outpatient gambling treatment across an entire treatment system.

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  • The study looks at how the environment and our genes can affect health, especially in young kids.
  • Researchers studied 416 Colombian children under 5 years old to see how different factors, like pollution and diet, impact DNA damage.
  • They found that some things, like being exposed to air pollution and living in crowded places, can increase DNA damage, while others, like drinking soft drinks, might actually help reduce it.
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Background: Squamous cell carcinoma of the head and neck (SCCHN) is an aggressive disease with poor prognosis. It is known that the activation of STAT3 signaling pathways promotes the development and progression of this neoplasia and it has been described the role of PTPRT as a negative regulator of STAT3. Then, we have evaluated the impact of them as biomarkers of outcome in a series of patients with recurrent and/or metastatic SCCHN treated with weekly paclitaxel-plus-cetuximab (ERBITAX) regimen.

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Organizers are specialized cell populations that orchestrate cell patterning and axon guidance in the developing nervous system. Although non-human models have led to fundamental discoveries about the organization of the nervous system midline by the floor plate, an experimental model of human floor plate would enable broader insights into regulation of human neurodevelopment and midline connectivity. Here, we have developed stem cell-derived organoids resembling human floor plate (hFpO) and assembled them with spinal cord organoids (hSpO) to generate midline assembloids (hMA).

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Microrobots, untethered miniature devices capable of performing tasks at the microscale, have gained significant attention in the fields of robotics and biomedicine. These devices hold immense potential for various industrial and scientific applications, including targeted drug delivery and cell manipulation. In this study, we present a novel magnetic rolling helical microrobot specifically designed for bio-compatible cell patterning.

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Microrobots have emerged as promising tools for biomedical and in vivo applications, leveraging their untethered actuation capabilities and miniature size. Despite extensive research on diversifying multi-actuation modes for single types of robots, these tiny machines tend to have limited versatility while navigating different environments or performing specific tasks. To overcome such limitations, self-assembly microstructures with on-demand reconfiguration capabilities have gained recent attention as the future of biocompatible microrobotics, as they can address drug delivery, microsurgery, and organoid development processes.

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The growing interest in tin-halide semiconductors for photovoltaic applications demands in-depth knowledge of the fundamental properties of their constituents, starting from the smallest monomers entering the initial stages of formation. In this first-principles work based on time-dependent density-functional theory, we investigate the structural, electronic, and optical properties of tin-halide molecules SnX , with and X=Cl, Br, I, simulating these compounds in vacuo as well as in an implicit solvent. We find that structural properties are very sensitive to the halogen species while the charge distribution is also affected by stoichiometry.

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  • Peripheral mononuclear cells (PBMCs) show significant changes in their mitochondrial function depending on health status, making them a useful model for studying mitochondrial metabolism.
  • These cells are influenced by systemic signals and provide insights into disease mechanisms, although their respiratory capacity may differ from other tissues like skeletal muscle.
  • The article highlights a new technique using high-resolution fluorespirometry to simultaneously measure oxygen consumption and mitochondrial membrane potential in PBMCs, helping to understand how health conditions affect mitochondrial responses to energy needs.
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Purpose: To analyse digital breast tomosynthesis (DBT) reading times in the screening setting, compared to 2D full-field digital mammography (FFDM), and investigate the impact of reader experience and professional group on interpretation times.

Method: Reading time data were recorded in the PROSPECTS Trial, a prospective randomised trial comparing DBT plus FFDM or synthetic 2D mammography (S2D) to FFDM alone, in the National Health Service (NHS) breast screening programme, from January 2019-February 2023. Time to read DBT+FFDM or DBT+S2D and FFDM alone was calculated per case and reading times were compared between modalities using dependent T-tests.

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Boosting stretchability and electric output is critical for high-performance wearable triboelectric nanogenerators (TENG). Herein, for the first time, a new approach for tuning the composition of surface functional groups through surfactant self-assembly to improve the tribopositivity, where the assembly increases the transferred charge density and the relative permittivity of water polyurethane (WPU). Incorporating bis(trifluoromethanesulfonyl)imide (TFSI) and alkali metal ions into a mixture of WPU and the surfactant forms a stretchable film that simultaneously functions as positive tribolayer and electrode, preventing the conventional detachment of tribolayer and electrode in long term usage.

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Sacha inchi seed oil is a food matrix rich in bioactive constituents, mainly polyunsaturated fatty acids. In this study, the characteristics of color, carotenoid content, tocopherols, and volatile aroma compounds in eight sacha inchi seed (Plukenetia volubilis L.) oil accessions were evaluated.

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Background: The co-administration of drugs known to interact greatly impacts morbidity, mortality, and health economics. This study aims to examine the drug-drug interaction (DDI) phenomenon with a large-scale longitudinal analysis of age and gender differences found in drug administration data from three distinct healthcare systems.

Methods: This study analyzes drug administrations from population-wide electronic health records in Blumenau (Brazil; 133 K individuals), Catalonia (Spain; 5.

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Introduction: Prechtl's method (GMA) is a test for the functional assessment of the young nervous system. It involves a global and a detailed assessment of the general movements (GMs) and has demonstrated validity. Data on the reliability of both assessments in the preterm period are scarce.

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Chronic obstructive pulmonary disease (COPD) is a heterogeneous condition. We hypothesized that the unbiased integration of different COPD lung omics using a novel multilayer approach might unravel mechanisms associated with clinical characteristics. We profiled mRNA, microRNA and methylome in lung tissue samples from 135 former smokers with COPD.

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