Productividad local y reconversión de infraestructura hacia un territorio industrial sostenible: Canadá-Colombia

Este texto aborda el análisis de dos casos sobre la consoli­dación de nueva infraestructura en territorios industriales. El primero, trata la reconversión de infraestructura indus­trial en espacios intraurbanos de Montreal-Quebec, Cana­dá, generada durante el proceso de mejoramiento tecnoló­gico propiciado por el tránsito de la sociedad-industrial a la sociedad del conocimiento. Asimismo, se identificaron estrategias de estructuración local del territorio que reco­nocen el papel de cada actor en la construcción de iden­tidad, bajo modelos productivos sostenibles. El segundo caso, se concentra en estudiar la consolidación de infraes­tructura industrial en Yumbo-Valle, Colombia, sugiriendo estrategias locales para lograr el éxito en su incorporación como un territorio sostenible

Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

Understanding the relation between Zika virus infection during pregnancy and adverse fetal, infant and child outcomes: a protocol for a systematic review and individual participant data meta-analysis of longitudinal studies of pregnant women and their infants and children

IntroductionZika virus (ZIKV) infection during pregnancy is a known cause of microcephaly and other congenital and developmental anomalies. In the absence of a ZIKV vaccine or prophylactics, principal investigators (PIs) and international leaders in ZIKV research have formed the ZIKV Individual Participant Data (IPD) Consortium to identify, collect and synthesise IPD from longitudinal studies of pregnant women that measure ZIKV infection during pregnancy and fetal, infant or child outcomes.Methods and analysisWe will identify eligible studies through the ZIKV IPD Consortium membership and a systematic review and invite study PIs to participate in the IPD meta-analysis (IPD-MA). We will use the combined dataset to estimate the relative and absolute risk of congenital Zika syndrome (CZS), including microcephaly and late symptomatic congenital infections; identify and explore sources of heterogeneity in those estimates and develop and validate a risk prediction model to identify the pregnancies at the highest risk of CZS or adverse developmental outcomes. The variable accuracy of diagnostic assays and differences in exposure and outcome definitions means that included studies will have a higher level of systematic variability, a component of measurement error, than an IPD-MA of studies of an established pathogen. We will use expert testimony, existing internal and external diagnostic accuracy validation studies and laboratory external quality assessments to inform the distribution of measurement error in our models. We will apply both Bayesian and frequentist methods to directly account for these and other sources of uncertainty.Ethics and disseminationThe IPD-MA was deemed exempt from ethical review. We will convene a group of patient advocates to evaluate the ethical implications and utility of the risk stratification tool. Findings from these analyses will be shared via national and international conferences and through publication in open access, peer-reviewed journals.Trial registration numberPROSPERO International prospective register of systematic reviews (CRD42017068915).</jats:sec

Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples

Funder: NCI U24CA211006Abstract: The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts

Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb-Pb collisions at root s(NN)=2.76TeV

Peer reviewe

Óptica de nanopartículas y nanocompuestos

IP 1101-05-036-99of the XV latinamerican symposium on solid state physics (SlafesXV), Cartagena de Indias, Colombia, November;1 to 5, 1999 / latinamerican simposium on solid state physics(slafes XV)(15: 1999 nov. 1-5 : Cartagena de;Indias, Colombia) Guest editors J. Giraldo, L. Quiroga, R.Merlin, J.R. Leite. -- En: Physica status solidi;(b) : Basic research Vol. 220, no. 1 (july 2000): p. 1-804. --ISSN 03701972.;Oaxaca: Sociedad Mexicana de ciencia de superficies y vacio A.C., 2000. --28 cm. -- REVISTA(S): Proceedings;ARTICULOS EN REVISTA: Funcion dielectrica de un medio quepercola / Adriana Gutierrez Rodriguez, Jairo;Giraldo Gallo. -- En: Revista colombiana de un medio que percola. -- Vol.32, no. 1 (2000). -- A statistical;model for flash thermal desorption of carbon dioxide frompolycrystallinemolybdenum / L.D Lopez Carreño, A.J.;Ramirez Cuesta, L.Viscido, J.M Heras. -- En: Journal of molecular catalysis a: chemical. -- Vol. 167 (june;2001); p. 157-163. -- Diffusive like minibands in finite superlattices ofdisordered quantum wells / R.R. Rey;Gonzalez, E. Machado -- En: Brazilian journal of physics.'-- Vol. 31 no. 4(dic. 2001). -- RF sputtered a Si:H;and aGe:H films: a comparative study / A.R. Zanatta, F. Fajardo,M. Mulato, M.M. Lima, F.C. Marques, I.;Chambouleyron. -- En: Asian journal of physics. -- Vol. 9(2000); p. 681.'-- PONENCIA(S) en Congreso: Atomic;ordering in Cd1-xZnxTe for low Zn concentration: optical,thermal and structural characterization / A.;Guterrez, M.E. Rodriguez, O. Zelaya, C. Vasquez, L. Baños,JairoGiraldo Gallo. -- En: Sociedad mexicana de;ciencia de superficies y vacio A.C. 20 congreso nacional.(20:2000 ago.28 - sep.1 :Oxaca, Mexico). -

Recomendaciones para el uso racional de la prueba 25-hidroxi vitamina D Policy Brief

El incremento exponencial en la solicitud de pruebas de laboratorio de 25-Hidroxivitamina D o [25(OH)D ha encendido las alarmas y generado un fuerte llamado de atención, dado que puede reflejar falencias en la estandarización de la práctica clínica y en el uso no sistemático de la evidencia científica para la toma de decisiones en la vida real, que permitan analizar las indicaciones de la prueba, su frecuencia, interpretación e incluso para valorar el impacto para los sistemas de salud, especialmente cuando se contrasta con los mínimos o casi nulos efectos de la estrategia de tamizar o suplir indiscriminadamente a la población general, sin considerar una evaluación clínica integral de riesgos y necesidades de las personas. Desde un punto de vista meramente de impacto en salud pública, la consecuencia de solicitudes masivas y no indicadas, están afectando a la mayoría de los sistemas e instituciones de salud a nivel global. Los estudios primarios que determinaban valores de ingesta promedio poblacional, han sido ampliamente utilizados en la formulación de recomendaciones en Guías de Práctica Clínica (GPC), pero lastimosamente interpretados de forma errónea como puntos de corte para diagnosticar enfermedad y permitir la exagerada prescripción de esquemas de suplencia. El coeficiente de variación en los ensayos de rutina para medir niveles sanguíneos de 25(OH)D3 es alto (28%), disminuyendo la precisión global de la prueba y de forma simultánea, incrementando tanto los valores falsamente altos como falsamente bajos. La evidencia científica más reciente, analiza y cuestiona seriamente, la utilidad y el efecto real de la práctica masiva e indiscriminada de prescribir vitamina D sin un análisis exhaustivo de riesgo. La evidencia disponible es insuficiente para recomendar de forma general la suplencia de vitamina D para prevenir fracturas, caídas, cambios en la densidad mineral ósea, incidencia de enfermedades cardiovasculares, enfermedad cerebrovascular, neoplasias y tampoco en modificar la curva de crecimiento de hijos de madres que recibieron vitamina D como suplencia durante la gestación. Las recomendaciones presentadas en el documento se sustentan en el análisis crítico de la evidencia actual y en los principios de buenas prácticas clínicas e invitan a considerar un uso racional de las pruebas de 25(OH)D en el contexto de una práctica clínica centrada en las personas y una evaluación integral de necesidades y riesgos. Los principios de buena práctica sugieren que los clínicos puedan ser capaces de justificar que los resultados de la prueba de 25(OH)D influyen de manera contundente y definida la práctica clínica y modifican los desenlaces que interesan a las personas e impactan en su salud y bienestar. En la actualidad no hay claridad de cómo interpretar los resultados, y la relación entre los síntomas y los niveles de 25(OH)D, la cual, podría no ser consistente con la alta prevalencia de deficiencia de vitamina D reportada. Por tal razón, se sugiere revisar la racionalidad de la solicitud de pruebas para monitoreo sistemático de niveles de 25(OH)D o en todos los casos donde se realiza suplencia. Considerar el uso de las pruebas de 25(OH)D dentro de la evaluación integral de personas con sospecha o confirmación de las siguientes condiciones: raquitismo, osteomalacia, osteoporosis, híper o hipo paratiroidismo, síndromes de mala absorción, sarcopenia, enfermedad ósea metabólica

Biodiversity 2016. Status and Trends of Colombian Continental Biodiversity

This third volume of the annual report on biodiversity in Colombia continues the editorial line that begun in 2014. Using novel analytical and graphic proposals, these reports have the goal of communicating the contents to a broad public, making it available for discussion without sacrificing the quality of information. The challenge of communication continues to be a major part of the institutional project, and the new languages with which we are learning to communicate with society and other institutions are an experiment that we expect to be increasingly gratifying. The report for 2017 is already under construction and it counts on new digital technologies so the power of a colombian vital connection may be entirely expressed. The included content evidences that we are still far away from having a systematic follow-up about most of the topics related to the management of biodiversity and ecosystem services, which is the only way to evaluate the effectiveness of policies and investments made by society. In fact, a limitation that is recognized is that of identifying positive or negative changes that affect different levels of organization of life on this planet; therefore, our global navigation route of the Aichi targets is still to be verified. An additional purpose of this process includes the invitation of all Colombians to contribute in constructing and maintaining basic monitoring indicators for management since it is impossible to identify long-term trends of flora and fauna in the country without the support of institutions, researchers, and citizens. This challenge is immense in a megadiverse country such as Colombia. For this reason, the report will continue to open its pages to experts, and even indigenous peoples or local communities, for them to present their perspectives about environmental change and its effects on biodiversity in a systematic and documented manner. This has the objective of stimulating the commitment of everyone in the management of biodiversity and ecosystem services. The only way of overcoming the risk of extinction is through the active process of social learning in which all sectors assume a part of the complex responsibility in protecting the forms of life of the country, a roughly counted tenth of all creatures on Earth. I thank all the people that contributed in this Report, those who have supported us in the phases of production, and all readers and users, who are the ultimate judges of its utility.Bogotá, D. C