Adlah Sukkar, John Jenkins, Jesús Oswaldo Sánchez Castillo, Elizabeth M. Wagner,
Under conditions of chronic pulmonary ischemia, the bronchial circulation undergoes massive proliferation. However, little is known regarding the mechanisms that promote neovascularization. An expanding body of literature implicates the glutamic acid-leucine-arginine (ELR+) CXC chemokines and their G protein-coupled receptor, CXCR 2 , as key proangiogenic components in the lung. We used a rat model of chronic pulmonary ischemia induced by left pulmonary artery ligation (LPAL) to study bronchial angiogenesis. ...
Tópico(s): Cell Adhesion Molecules Research
2008 - American Physiological Society | Journal of Applied Physiology
Elizabeth M. Wagner, Jesús Oswaldo Sánchez Castillo, Jessica McClintock, John Jenkins, Aigul Moldobaeva,
A role for inflammation in modulating the extent of angiogenesis has been shown for a number of organs. The present study was undertaken to evaluate the importance of leukocyte subpopulations for systemic angiogenesis of the lung after left pulmonary artery ligation (LPAL) in a mouse model of chronic pulmonary thromboembolism. Since we (24) previously showed that depletion of neutrophils did not alter the angiogenic outcome, we focused on the effects of dexamethasone pretreatment (general anti-inflammatory) ...
Tópico(s): Protease and Inhibitor Mechanisms
2007 - American Physical Society | AJP Lung Cellular and Molecular Physiology
Jesús Oswaldo Sánchez Castillo, Aigul Moldobaeva, Jessica McClintock, John Jenkins, Elizabeth M. Wagner,
We previously showed increased expression of the ELR+, CXC chemokines in the lung after left pulmonary artery obstruction. These chemokines have been shown in other systems to bind their G protein-coupled receptor, CXCR(2), and promote systemic endothelial cell proliferation, migration, and capillary tube formation. In the present study, we blocked CXCR(2) in vivo using a neutralizing antibody and also studied mice that were homozygous null for CXCR(2). To estimate the extent of neovascularization ...
Tópico(s): Neonatal Respiratory Health Research
2007 - American Physiological Society | Journal of Applied Physiology
Sandra Díaz, Marion Piñeros, Oswaldo Sánchez,
Breast cancer is the leading cause of cancer around the world, in Colombia, although its incidence is considered low in comparison with developed countries like the United States of America, mortality and incidence figures show increases. As a public health problem, breast cancer has to be addressed with appropriate early detection strategies for its control. The present article reviews the main,aspects to consider when establishing a screening program; the basic concepts are discussed, a summary ...
Tópico(s): Global Cancer Incidence and Screening
2005 - Elsevier BV | Revista Colombiana de Cancerología
Fernando A. Angarita, Jorge L. Rodríguez, Eugenio Meek, Jesús Oswaldo Sánchez Castillo, Mauricio Tawil, Lilián Torregrosa,
Abstract Background Primary neuroendocrine carcinoma of the breast is a heterogeneous group of rare tumors with positive immunoreactivity to neuroendocrine markers in at least 50% of cells. Diagnosis also requires that other primary sites be ruled out and that the same tumor show histological evidence of a breast in situ component. Primary neuroendocrine carcinoma of the breast rarely presents as locally advanced disease and less frequently with such widespread metastatic disease as described herein. ...
Tópico(s): Neuroblastoma Research and Treatments
2013 - BioMed Central | World Journal of Surgical Oncology
Raúl Murillo, Sandra Díaz, Fernando Perry, César Poveda, Marion Piñeros, Oswaldo Sánchez, Lina Buitrago, Óscar Gamboa, Teófilo Lozano, Hsiang Yu, Ching‐Yun Wang, Catherine Duggan, David B. Thomas, Benjamin O. Anderson,
The lack of breast cancer screening in low and middle-income countries results in later stage diagnosis and worsened outcomes for women. A cluster randomized trial was performed in Bogotá, Colombia between 2008 and 2012 to evaluate effects of opportunistic breast cancer screening. Thirteen clinics were randomized to an intervention arm and 13 to a control arm. Physicians in intervention clinics were instructed to perform clinical breast examination on all women aged 50-69 years attending clinics ...
Tópico(s): Cervical Cancer and HPV Research
2015 - Wiley | International Journal of Cancer
María Paola Bertel Narváez, Javier Viloria Escobar, Jorge Oswaldo Sánchez Buitrago,
El artículo muestra las tendencias investigativas en las maestrías y doctorados en el área de la gestión educativa, en América Latina, a partir de la revisión de las líneas de investigación de las doce mejores universidades en 2017, según el ranking Quacquarelli Symonds (QS). Los resultados evidencian como tendencia principal los procesos de gestión académica, seguidos por la gestión comunitaria y directiva; y, por último, los relacionados con la gestión administrativa y financiera.
Tópico(s): Educational Methods and Psychological Studies
2019 - University of La Sabana | Educación y Educadores
Ricardo Sánchez, Marco Venegas, Jorge Otero, Oswaldo Sánchez,
Obtener una versión en español colombiano de dos instrumentos que miden la calidad de vida relacionada con la salud: EORTC QLQ C-30 (instrumento general) y el EORTC QLQ BR23 (instrumento específico). En estas versiones se busca que el lenguaje y los significados de los contenidos sean consistentes con los diferentes escenarios de aplicación en Colombia. Para el proceso de adaptación cultural se siguieron las recomendaciones sugeridas por el grupo de calidad de vida de EORTC relacionadas con las traducciones, ...
Tópico(s): Patient Satisfaction in Healthcare
2009 - Elsevier BV | Revista Colombiana de Cancerología
Walter Arboleda, Raúl Murillo, Marion Piñeros, Fernando Perry, Sandra Díaz, Édgar Salguero, Oswaldo Sánchez, César Poveda, Carolina Casas, Lina María Cabezas Rincón, Yolanda Rueda, Dimelza Osorio,
Determinar la cobertura de examen clínico y mamografía de tamización para cáncer de mama en un grupo de mujeres bogotanas afiliadas a seguros de salud. Se realizó una encuesta telefónica a 4.526 mujeres entre 50 y 69 años, residentes en Bogotá y en municipios vecinos, afiliadas a tres compañías de seguros de salud. Se excluyeron las mujeres con antecedente personal de cáncer de mama. La cobertura de tamización se valoró como la proporción de mujeres con antecedente de mamografía y examen clínico ...
Tópico(s): Cervical Cancer and HPV Research
2009 - Elsevier BV | Revista Colombiana de Cancerología
Luis Francisco Miranda, Jorge Oswaldo Sánchez Buitrago, Javier Viloria Escobar,
A considerable amount of literature has been published on environmental sustainability in the context of higher education. However, no previous studies have investigated how environmental sustainability has evolved in the university context and little is known about the specific research trends in this field. In that sense, the main purpose of this study is to identify the most influential topics in university environmental sustainability research and the relationships between them. To that end, ...
Tópico(s): Sustainable Building Design and Assessment
2021 - Instituto Salvatierra | Revista Electrónica de Investigación Educativa
Rahul Mohan Singh, Oswaldo Ortiz Sánchez, Suvojit Ghosh, Naveen Kadimcherla, Swarnendu Sen, Ganesh Balasubramanian,
We examine the dependence of the viscosity of nanofluids, comprised of magnetite nanoparticles dispersed in toluene, on particle concentration and temperature. The nanofluid viscosity increases monotonically with particle concentration. We show that although the nanoparticles aggregate to form clusters with increasing concentration, the cluster size is fairly monodisperse and hence the viscosity can be expressed as a function of only the particle concentration. The viscosity of the nanofluid is ...
Tópico(s): Power Transformer Diagnostics and Insulation
2015 - Elsevier BV | Physics Letters A
Donald A. Drew, Gretchen A. Koch, Heather Vellante, Ronak Talati, Oswaldo Sanchez,
Tópico(s): Protein Structure and Dynamics
2009 - Springer Science+Business Media | Bulletin of Mathematical Biology
Produção Nacional
Revisado por pares
Elizabeth Gutierrez Primo, Alex Oswaldo Sánchez Huarcaya,
El clima escolar, cuya definición hace referencia a las percepciones o experiencias de los sujetos con respecto a su ambiente de trabajo, sus funciones o relaciones interpersonales, se constituye como un elemento importante dentro de una organización educativa para la resolución de situaciones adversas. En este sentido, la presente investigación se enmarca en el estudio del clima escolar en el trabajo colegiado y tiene por objetivo analizar las percepciones de los docentes del nivel primaria sobre ...
Tópico(s): Educational and Organizational Development
2022 - Catholic University of the Most Holy Conception | Revista de Estudios y Experiencias en Educación
Raúl Murillo, Kelman Ojeda, Julio Solano, María Victoria Herrera, Oswaldo Sánchez,
As a result of population aging, the absolute number of new cancer cases will increase in Colombia during the next decades from about 101,893 per year in 2018 (excluding nonmelanoma skin cancer) to about 136,246 per year in 2040, still with an average annual percentage change of −1.5%.1 The country shows an epidemiologic transition with breast and prostate cancers as leading causes of cancer incidence and mortality, and a mortality reduction from infection and tobacco-associated cancers such as those ...
Tópico(s): Global Cancer Incidence and Screening
2019 - American Society of Clinical Oncology | Journal of Global Oncology
Heleda Dalila Villanueva Blas, Olga Alessandra Medina Moreno, Alex Oswaldo Sánchez Huarcaya,
A consecuencia de los cambios climáticos suscitados hasta la actualidad, una visión ambientalista ha venido tomando posición en el mundo acerca de la educación ambiental. Frente a esto, el objetivo general del presente estudio es analizar la influencia de la educación ambiental en la formación integral de los estudiantes de la Educación Básica Regular. Seguidamente, los procedimientos que se realizaron en la construcción del estudio consistió en la identificación, clasificación y selección de diversas ...
Tópico(s): Educational methodologies and cognitive development
2020 - | Revista Iberoamericana Ambiente & Sustentabilidad
Produção Nacional
Revisado por pares
René Sotelo, Mariano Mirandolino, Gustavo Trujillo, Alejandro J. Garcia, Robert De Andrade, Oswaldo Carmona, Sanchez Luis, Eduardo Rodriquez, Antonio Finelli,
Objectives To present our experience with laparoscopic rectourinary fistula (RUF) repair. RUF is a rare entity that can develop after ablative or extirpative prostate surgery. Successful management often requires an aggressive approach. Several techniques have been described for surgical correction. Methods From October 2004 to October 2005, 3 patients were treated for RUF. The mean age was 63 years (range 58 to 68). RUF developed after open simple prostatectomy, open radical prostatectomy, and transurethral ...
Tópico(s): Diverticular Disease and Complications
2007 - Elsevier BV | Urology
Felipe Rodríguez-Romero, Geoffrey R. Smith, José Fernando Méndez-Sánchez, Oswaldo Hernández‐Gallegos, Petra Sánchez‐Nava, Fausto R. Méndez de la Cruz,
We studied demography of a population of viviparous lizard, Sceloporus bicanthalis, from Nevado de Toluca Volcano, Mexico, using mark-recapture methods. Age structure of this population varied seasonally due to an increase in number of juveniles over summer, although neonates were observed in every month. Estimated average density was 304 individuals/ha. Snout-vent length at sexual maturity in viviparous S. bicanthalis was 31 mm in males and 32 mm in females. Males survived longer than females, ...
Tópico(s): Species Distribution and Climate Change
2011 - Southwestern Association of Naturalists | The Southwestern Naturalist
José Aguilar, Oswaldo Terán, Hebert Sánchez, José Gutiérrez de Mesa, Jorge Cordero, Danilo Chávez,
In this paper, we propose a Fuzzy Cognitive Map (FCM) to opinion mining, with special attention to media influence on public opinion. Particularly, in this paper, we describe the FCM, the concepts and relationships among them. Our opinion mining model is based on a multilevel FCM, to distribute the concepts according to the aspects that describe the elements conforming public opinion, which are: social, technological and biological. We carry out preliminary tests, and the results are very encouraging.
Tópico(s): Cognitive Computing and Networks
2017 - Elsevier BV | Procedia Computer Science
Produção Nacional
Revisado por pares
Jorge Oswaldo Sánchez Buitrago, Johanna Cintia Rúa-Martínez, Loly Esther Ternera-Romero,
El objetivo del presente artículo es caracterizar las competencias para la gestión educativa de los directivos docentes del departamento del Magdalena desde una reflexión sobre sus implicaciones para la transformación de las instituciones educativas en organizaciones escolares inteligentes. En este sentido, se desarrolló una investigación mixta de tipo descriptiva que privilegió diferentes herramientas de recolección de información como una Matriz de Análisis de Hojas de Vida de los directivos docentes ...
Tópico(s): Social Issues and Policies in Latin America
2018 - Universidad de Cartagena | Clío América
Produção Nacional
Revisado por pares
Rodrigo Ramella Munhoz, Federico Cayol, Luis Corrales, Raquel Gerson, Malena Tilli, Elluz Oliver Barreto, Jesús Oswaldo Sánchez Castillo, Rafael Schmerling, Gabriela Cinat,
Tópico(s): Energy Harvesting in Wireless Networks
2020 - Springer Science+Business Media | Cancer Immunology Immunotherapy
Cristina Zurique Sánchez, Miguel Oswaldo Cadena-Sanabria, Marina Sofía Zurique Sánchez, Paul Anthony Camacho, Marina Sánchez Sanabria, Santiago Hernández Hernández, Karen Velásquez Vanegas, Andrea Ustate Valera,
La demencia es un problema de salud pública creciente. Involucra el declive de funciones cognitivas, generando discapacidad mental y física, y con ello mayor dependencia funcional. Se dispone de limitada información epidemiológica que revele un valor aproximado real de su prevalencia en la población adulta mayor latinoamericana. El objetivo de este estudio fue determinar la prevalencia de demencia en población adulta mayor de América Latina y su comportamiento según área geográfica y sexo. Se llevó ...
Tópico(s): Aging, Health, and Disability
2019 - Elsevier BV | Revista Española de Geriatría y Gerontología
María Cecilia Londoño, Oswaldo Téllez‐Valdés, Víctor Sánchez‐Cordero,
SUMMARY Mesoamerica, Chocó and the tropical Andes are recognized as biodiversity hotspots where conservation action is urgently needed. Because World Wildlife Fund for Nature (WWF) ecoregions are commonly used as the basis for conservation decisions, an understanding of WWF ecoregions’ environmental heterogeneity and their representation in current protected areas (PAs) is important for identifying priority areas for conservation. Thirteen environmental domain classifications based on 22 climatic ...
Tópico(s): Conservation, Biodiversity, and Resource Management
2010 - Cambridge University Press | Environmental Conservation
S. Rodríguez-Sánchez, Oswaldo Hernández‐Hernández, Ana I. Ruiz‐Matute, M. Luz Sanz,
Different derivatization procedures were assayed to simultaneously analyse iminosugars such as deoxynojirimycin (DNJ) or fagomine and other carbohydrates of low molecular weight by gas chromatography coupled to mass spectrometry (GC–MS) in Morus sp. Both oximation + trimethylsilylation and oximation + acetylation allowed the separation of target compounds, whereas trimethylsilyl (TMS) and acetylated derivatives showed several coelutions. Nevertheless, oximation + acetylation were discarded for giving inaccurate ...
Tópico(s): Legume Nitrogen Fixing Symbiosis
2010 - Elsevier BV | Food Chemistry
Liseth Rivero, Jorge López-Vicente, Luis Hernández, Ignasi Puig, Coral Arnau‐Collell, Lorena Moreno, Mireia Díaz, Cristina Rodríguez de Miguel, Teresa Ocaña, Leticia Moreira, Míriam Cuatrecasas, Sabela Carballal, Ariadna Sánchez, Oswaldo Ortíz, Josep Llach, Francesc Balaguer, María Pellisé,
Abstract Background and study aims Serrated polyposis syndrome (SPS) is a condition with high risk for colorectal cancer. The Endocuff device has been shown to increase adenoma detection in the general and screening population. We aimed to ascertain whether Endocuff-assisted colonoscopy increases detection of serrated lesions in comparison with standard colonoscopy during the surveillance of patients with SPS. Methods In a multicenter randomized controlled study, patients who met SPS criteria I and/ ...
Tópico(s): Genetic factors in colorectal cancer
2019 - Thieme Medical Publishers (Germany) | Endoscopy
Cristina Díez‐Vives, Shaun Nielsen, Pablo Sánchez, Oswaldo Palenzuela, Isabel Ferrera, Marta Sebastián, Carlos Pedrós‐Alió, Josep M. Gasol, Silvia G. Acinas,
Bacteroidetes is one of the dominant phyla of ocean bacterioplankton, yet its diversity and population structure is poorly understood. To advance in the delineation of ecologically meaningful units within this group, we constructed near full-length 16S rRNA gene clone libraries from contrasting marine environments in the NW Mediterranean. Based on phylogeny and the associated ecological variables (depth and season), 24 different Bacteroidetes clades were delineated. By considering their relative ...
Tópico(s): Protist diversity and phylogeny
2019 - Wiley | Molecular Ecology
José Luis Xochihua Juan, Carolina Solís Maldonado, Raúl Alejandro Luna Sánchez, Oswaldo Javier Enciso Díaz, Rebeca Rojas-Ronquillo, Ladislao Sandoval‐Rangel, Nayely Pineda‐Aguilar, Norma A. Ramos Delgado, Daniela Xulú Martínez‐Vargas,
In this work titanium dioxide (TiO2) band gap energy modification was performed, in order to increase its photocatalytic activity on the visible spectrum range of solar radiation. Europium (Eu) was incorporated on the surface of TiO2 at 0.2 wt% and 0.6 wt%, using impregnation method. The photocatalyst was characterized using X-ray diffraction (XRD), nitrogen physisorption (N2-physisorption), inductively coupled plasma optical emission spectroscopy (ICP-OES), Fourier transform infrared spectroscopy (FT- ...
Tópico(s): Advanced oxidation water treatment
2021 - Elsevier BV | Catalysis Today
Alexander Ortíz Ocaña, Jorge Oswaldo Sánchez Buitrago, Iván Manuel Sánchez Fontalvo,
Se analizan los modelos pedagógicos desde una dimensión psicológica, haciendo una breve descripción del modelo pedagógico conductista (Skinner), el modelo pedagógico constructivista (Piaget) y la teoría socio-histórico-cultural (Vygotsky) como modelo pedagógico. Sin embargo, existen diversas propuestas pedagógicas holísticas y ecológicas derivadas de nuevas epistemologías. En este sentido concluimos que desde el modelo bio-pedagógico Maturana propone una biología del amor como sustento ontológico y ...
Tópico(s): Religious and Theological Studies
2015 - | Revista Científica General José María Córdova
Jorge Oswaldo Sánchez Buitrago, Javier Viloria Escobar, Luis Miranda Terraza,
El presente trabajo pretende caracterizar los grupos informales existentes en las instituciones escolares de orden público en el distrito de Santa Marta, así como develar los factores que originan tales agrupaciones y sus influencias en la calidad educativa; por lo cual, prioriza una metodología de corte etnográfico, fundamentada en la perspectiva de la complementariedad, que hace uso de instrumentos como: análisis documental, diarios de campo, observación participante y entrevistas en profundidad ...
Tópico(s): Social Issues and Policies in Latin America
2017 - Universidad de Cartagena | Praxis
Vanessa Pertuz, Luis Francisco Miranda, Jorge Oswaldo Sánchez Buitrago,
Existe una tendencia creciente hacia la creación de negocios verdes, como respuesta a los problemas ambientales. Sin embargo, la literatura destaca la necesidad de comprender mejor este tipo de emprendimientos. En ese orden de ideas, el presente trabajo analiza la literatura científica relacionada con el emprendimiento verde desde dos perspectivas: individual y empresarial. Primero, se describen las tendencias en este campo de investigación considerado como emergente y luego se realiza un análisis ...
Tópico(s): Sustainable Supply Chain Management
2021 - University of Zulia | Revista Venezolana de Gerencia
Rene J. Sotelo Noguera, Juan Astigueta, Oswaldo Carmona, Robert Andrade, Sanchez Luis, Bernardo Cuomo, Javier Manrique, Inderbir S. Gill, Mihir Desai,
Objectives To report on the initial case and surgical technique of laparoendoscopic, single-site, subtotal cystectomy and augmentation enterocystoplasty performed through a single multichannel transumbilical port in a patient with neurogenic bladder. Methods Laparoendoscopic, single-site, subtotal cystectomy and augmentation enterocystoplasty was performed in a 20-year-old woman with neurogenic bladder secondary to congenital sacral lipoma that had been operated on at 2 years of age. The patient ...
Tópico(s): Gastrointestinal disorders and treatments
2009 - Elsevier BV | Urology