61,190 results match your criteria: "Colombia; School of Medicine and Health Sciences[Affiliation]"

Hearing loss in patients with Morquio A syndrome: A scoping review.

Medicine (Baltimore)

January 2025

Centro de Investigaciones en Anomalías Congénitas y Enfermedades Raras (CIACER), Universidad Iccesi, Cali, Colombia.

Background: Hearing impairment is a prevalent clinical feature in Morquio syndrome (mucopolysaccharidosis IVA or MPS IVA) patients, often presenting in diverse forms: conductive, sensorineural, or a combination known as mixed hearing loss. The mixed form entails a blend of both conductive and sensorineural elements, typically exhibiting a progressive trajectory. This scoping review aimed to comprehensively analyze available evidence pertaining to the pathophysiology, classification, epidemiology, and clinical management of hearing loss in individuals with MPS IVA.

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Coastal ecosystems play a major role in marine carbon budgets, but substantial uncertainties remain in the sources and fluxes of coastal carbon dioxide (CO). Here, we assess when, where, and how submarine groundwater discharge (SGD) releases CO to shallow coastal ecosystems. Time-series observations of dissolved CO and radon (Rn, a natural groundwater tracer) across 40 coastal systems from 14 countries revealed large SGD-derived CO fluxes.

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Comorbidities Associated With Different Degrees of Severity in Children and Young People Hospitalized With Acute COVID-19.

Pediatr Infect Dis J

January 2025

From the Innovation and Global Pediatric Infectious Disease, Biomedical Research Foundation of the University Hospital 12 de Octubre (FIBH12O), Instituto de Investigación Hospital 12 de Octubre (imas12), Madrid, Spain.

In this prospective cohort study with 2326 hospitalized children and young people with coronavirus disease 2019 in Spain and Colombia, 36.4% had comorbidities. Asthma, recurrent wheezing, chronic neurological, cardiac and pulmonary diseases significantly increased the risk of severe outcomes such as death, mechanical ventilation and intensive care unit admission.

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Exploring the bonding in alkaline earth halides AeX (Ae = Be-Ba, X = F-I) from Fermi hole localization and QTAIM perspectives.

Phys Chem Chem Phys

January 2025

Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito 17-1200-841, Ecuador.

A theoretical description of various [AeX] (Ae = Be-Ba, X = F-I) systems, some of which have been reported in the literature to bear an unusual quadruple bond between the metal and the halogen, is provided based on both (i) the localization of the Fermi hole and (ii) the topological analysis of the one-electron density. Insights into the bond order of various [AeX] systems are inferred on the basis of the number of electrons localized in the bond basin, the topology of the Fermi hole information computed along the bond axis, and the delocalization index. The results suggest that the [AeX] molecules present a bond with attributes closer to a classical dative bond than to a multiple one, being characterized by large stabilization due to the electrostatic interaction between the polarized metal and the halogen anion.

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Optoelectronic Properties of Shallow Donor Atom in 2D-Curved Nanostructures Under External Electric and Magnetic Fields.

Nanomaterials (Basel)

December 2024

Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia.

Using the effective mass approximation and the finite difference method, we examined the linear, non-linear, and total optical absorption coefficients (OAC), as well as the relative refractive index coefficients (RIC) variations for an off-center shallow donor impurity in a 2D-curved electronic nanostructure subjected to external electric and magnetic fields. Our results reveal that the peak positions of the OAC and RIC are susceptible to the geometrical angles, the impurity position, and the strength of the applied electric and magnetic fields. In particular, the positions of the OAC and RIC peaks can be shifted towards blue or red by adjusting the geometric angle.

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Inflammation can positively and negatively affect tumorigenesis based on the duration, scope, and sequence of related events through the regulation of signaling pathways. A transcriptomic analysis of five pulmonary arterial hypertension, twelve Crohn's disease, and twelve ulcerative colitis high throughput sequencing datasets using R language specialized libraries and gene enrichment analyses identified a regulatory network in each inflammatory disease. IRF9 and LINC01089 in pulmonary arterial hypertension are related to the regulation of signaling pathways like MAPK, NOTCH, human papillomavirus, and hepatitis c infection.

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Objectives: To determine the prevalence of self-reported delayed adverse events (DAEs), major AEs, and flares following COVID-19 vaccinations among patients with autoimmune rheumatic diseases (AIRDs) in Malaysia.

Methodology: An electronically validated survey from the COVID-19 vaccination in autoimmune diseases (COVAD) study group was distributed in July 2021 to patients with autoimmune diseases and healthy controls (HCs). The survey collected data on DAEs (any AE that persisted or occurred after 7 days of vaccination), any early or delayed major adverse events (MAEs), and flares following COVID-19 vaccination.

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Background: Seasonal influenza illness and acute respiratory infections can impose a substantial economic burden in low- and middle-income countries (LMICs). We assessed the cost of influenza illness and acute respiratory infections across household income strata.

Methods: We conducted a secondary analysis of data from a prior systematic review of costs of influenza and other respiratory illnesses in LMICs and contacted authors to obtain data on cost of illness (COI) for laboratory-confirmed influenza-like illness and acute respiratory infection.

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Objective: Sleep bruxism (SB) is associated with alterations in dopamine and serotonin, which are related to increased consumption of added sugar and overuse of screens. The aim of this study was to compare the effect of the interventions 'Food, Fun and Family' (FFF) and Counselling and Education (CE) on the frequency of SB in children.

Methods: A randomised clinical trial was conducted.

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Background: Penetrating cardiac trauma is an entity with high pre and intrahospital mortality due to complications such as cardiac tamponade and massive hemothorax. A ventricular septal defect (VSD) occurs in 1-5% of cases and can present early or late. The management strategy for VSD resulting from penetrating cardiac trauma is uncertain.

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Background: Perry syndrome (PS) is a rare and fatal hereditary autosomal dominant neurodegenerative disorder caused by mutations in dynactin (DCTN1). PS brains accumulate inclusions positive for ubiquitin, transactive-response DNA-binding protein of 43 kDa (TDP-43), and to a lesser extent dynactin.

Objectives: Little is known regarding the contributions of TDP-43, an RNA binding protein that represses cryptic exon inclusion, in PS.

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Background: Stressful life events (SLEs) are associated with increased risk of depression or anxiety. Coping mechanisms may moderate this relationship but little is known on this topic in young people or in Latin America.

Aim: To investigate whether coping strategies predict odds of depression and/or anxiety and moderate the relationship between SLEs and depression and/or anxiety in young people in Peru, Lima and Bogotá.

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Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils.

J Hazard Mater

January 2025

Departamento de Química Orgánica y Bio-Orgánica, Universidad Nacional de Educación a Distancia (UNED), Avenida de Esparta s/n, Las Rozas de Madrid 28232, Spain. Electronic address:

Magnetite nanoparticles have been successfully used for removal and immobilization of contaminants in water, yet their application in soils combined with in situ magnetic separation remains unexplored. We evaluated the effectiveness and optimal conditions for using magnetite nanoparticles combined with magnetic separation to remove metal(loid)s from contaminated mine soils. Soil samples were incubated (15, 45 days) with varying doses of magnetite (0, 25, 50 g kg⁻¹) and moisture (dry, field capacity) and separated using electromagnet or permanent magnet.

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We consider a discrete-time Markovian random walk with resets on a connected undirected network. The resets, in which the walker is relocated to randomly chosen nodes, are governed by an independent discrete-time renewal process. Some nodes of the network are target nodes, and we focus on the statistics of first hitting of these nodes.

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Random walks with long-range memory on networks.

Chaos

January 2025

Instituto de Física, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.

We study an exactly solvable random walk model with long-range memory on arbitrary networks. The walker performs unbiased random steps to nearest-neighbor nodes and intermittently resets to previously visited nodes in a preferential way such that the most visited nodes have proportionally a higher probability to be chosen for revisit. The occupation probability can be expressed as a sum over the eigenmodes of the standard random walk matrix of the network, where the amplitudes slowly decay as power-laws at large times, instead of exponentially.

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In this study, we utilized drinking water treatment sludge (WTS) to produce adsorbents through the drying and calcination process. These adsorbents were then evaluated for their ability to remove azithromycin (AZT) from aqueous solutions. The L-500 adsorbent, derived from the calcination (at 500°C) of WTS generated under conditions of low turbidity in the drinking water treatment plant, presented an increase in the specific surface area from 70.

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Background: Asthma, a chronic inflammatory lung disease, is one of the leading causes of disability, demands on health resources, and poor quality of life. It is necessary to identify asthma-related risk factors to reduce the presence and development of symptoms.

Objective: This study aimed to explore the association of multiple possible factors with asthma symptoms in two subpopulations, children, adolescents, and adults, in six cities in Colombia.

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Gender and intersectional data are recognized as vital to addressing gender-based violence. We engage this thesis through a case study of a gender data project at the Colombia-Venezuela border. Coming from an underexplored vantage point in the literature, we trouble the assumption that more data are always better for advancing feminist objectives around GBV.

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Clubfoot (CF) is one of the most common musculoskeletal congenital abnormalities. Despite having optimal methods for its treatment, factors associated with the recurrence of CF treatment continue to be a topic of interest. The aim of this study was to perform a scoping review of the existing literature on factors associated with the recurrence of CF following treatment with the Ponseti method in children under 5 years of age.

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Bowel obstruction is a common complication that can affect patients due to different factors, including after a history of gastric bypass surgery. This review was conducted by searching the literature using both PubMed and Google Scholar for articles relating to bowel obstructions. Fifty-six articles were found after applying inclusion and exclusion criteria.

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A Riemannian multimodal representation to classify parkinsonism-related patterns from noninvasive observations of gait and eye movements.

Biomed Eng Lett

January 2025

Biomedical Imaging, Vision and Learning Laboratory(BivL2ab), Universidad Industrial de Santander (UIS), Bucaramanga, 680002 Santander Colombia.

Parkinson's disease is a neurodegenerative disorder principally manifested as motor disabilities. In clinical practice, diagnostic rating scales are available for broadly measuring, classifying, and characterizing the disease progression. Nonetheless, these scales depend on the specialist's expertise, introducing a high degree of subjectivity.

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Diversity of ectoparasitic bat flies (Diptera, Hippoboscoidea) in inter-Andean valleys: evaluating interactions in the largest inter-Andean basin of Colombia.

Zookeys

December 2024

Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, 170004, Manizales, Caldas, Colombia Universidad de Caldas Manizales Colombia.

Article Synopsis
  • Bat flies from the Streblidae and Nycteribiidae families have evolved specialized traits to feed on bats' blood and form specific associations with different bat species.
  • The Magdalena River basin in Colombia, which supports 98 bat species, reveals a diverse and modular interaction between bats and bat flies through field studies and literature review.
  • The study demonstrates medium specialization among bat flies, highlighting competitive relationships among species and suggesting that environmental conditions influence these dynamics in bat populations.
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Objectives: To evaluate the otolaryngology surgical capacity in Harare, Zimbabwe by analyzing procedural volumes across four hospitals, one private and three public, from 2019 to 2022.

Methods: A retrospective review of hand-written surgical case logs was conducted at Harare Eye, Ear, Nose, and Throat Institute (HEENT), Parirenyatwa Group of Hospitals (PGH), Sally Mugabe Children's Hospital (SMCH), and Sally Mugabe Adult's Hospital (SMAH). Patient age and surgical intervention for all otolaryngology surgeries performed in the operating room from 2019 to 2022 were recorded.

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First Palmar Intermetacarpal Flap for Congenital First Web Contracture: A Case Series.

Microsurgery

January 2025

Pediatric Hand Surgery and Microsurgery, Barcelona Children's Hospital, HM Nens, HM Hospitales, Barcelona, Spain.

Background: Pediatric first web space contractures of the hand can lead to disability in hand function. Several techniques have been proposed for treating this condition. Recently, a new technique involving the first palmar cutaneous flap was described in a cadaveric study.

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