48 research outputs found

    Economía institucional, corriente principal y heterodoxia

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    This article explores different analytical approaches to institutions in economic theory and history. The first part shows how mainstream economics embraced this theme and the influence this new analytical approach had on the New Economic History. The second part analyzes some heterodox tendencies, such as the theory of conventions, the school of regulation and the recent developments of economic sociology related to the work of Mark Granovetter and Pierre Bordieu. Regarding history, these developments have found support in the school of Annales, and the formulations of Marx and postkeynesian economists.economic history, economy of conventions, sociology economics

    Life and death in an oil boom

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    Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1982.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCHBibliography: leaves 75-76.by Oscar Salazar Rodriguez.M.C.P

    Recolección de células hematopoyéticas periféricas para trasplante alogénico con una dosis intermedia de filgrastim

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    Antecedentes: las células hematopoyéticas de sangre periférica son un recurso para combatir diversas enfermedades que requieren un trasplante alogénico para su curación. El método internacionalmente aceptado para obtener estas células es la administración de 2 a 24 μg/kg de peso de un factor estimulante de colonias de granulocitos y realizar la aféresis al cuarto, quinto o sexto días de iniciada la estimulación del donador. Objetivo: determinar la dosis adecuada del factor estimulante de colonias de granulocitos y el día óptimo para realizar una sola aféresis. Pacientes y método: se incluyeron 11 donadores que recibieron factor estimulante de colonias de granulocitos en dosis diarias de 8 μg/kg de peso, durante cuatro días, y se realizaron dos aféresis: una en el cuarto y otra en el quinto día de estimulación. Se analizaron retrospectivamente los procedimientos de recolección de células hematopoyéticas de sangre periférica para trasplante alogénico realizados entre febrero del 2003 y mayo del 2005 en el Hospital Universitario Dr. José Eleuterio González de la UANL. Resultados: en 63% de los pacientes, la cantidad de células CD34+ recolectada fue significativamente mayor en el quinto día que en el cuarto (3.10 × 106 vs 2.9 × 106), ya que el volumen plasmático promedio procesado por aféresis fue menor en la primera ocasión que en la segunda (8,800 vs 14,080 mL). Conclusión: una dosis de 8 μg/kg de peso del factor estimulante de colonias de granulocitos es efectiva para favorecer la obtención de células hematopoyéticas periféricas. Una aféresis al quinto día de iniciada la estimulación es suficiente para obtener la cantidad necesaria de células CD34+ que aseguren la recuperación hematológica del paciente trasplantado. Este procedimiento reduce los efectos colaterales del factor y de la aféresis, así como el costo final del trasplante

    Mudanças no perfil funcional de pacientes con patologia psiquiátrica resistente submetidos a neurocirurgia funcional estereotáxica

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    Con el objetivo de evaluar los resultados de la Neurocirugía Funcional Estereotáctica (NFE) sobre el perfil funcional de los pacientes diagnosticados con Patología Psiquiátrica Resistente (PPR), se realizó un diseño pre/post tratamiento. 13 pacientes fueron evaluados ( = 31 ± 8 años): siete mujeres diagnosticadas con algún Trastorno de la Conducta Alimentaria Resistente (TCAR); tres mujeres diagnosticadas con Trastornos Resistentes Obsesivo Compulsivo y Depresivo (TOC y DR) y tres pacientes (dos mujeres y un hombre) diagnosticados con Depresión Resistente (DR). A estos pacientes se les aplicó la Escala de funcionamiento del paciente Eje K, la cual consta de siete subescalas, y una Escala de Evaluación de la Actividad Global (EAG) antes del tratamiento y después de éste (seis meses posteriores a la NFE). Todos los grupos diagnósticos y el total de los pacientes evaluados presentaron cambios clínicos positivos; sin embargo, sólo el grupo de TCAR mostró importantes cambios clínicos de mejoría en el perfil de funcionamiento, siendo esta diferencia estadísticamente significativa (pre Md = 56; post Md = 84; z= - 2.36, p <0.05). Con la evidencia obtenida se observó que la NFE representa una opción terapéutica emergente efectiva orientada a disminuir el sufrimiento de los pacientes con PPR, así como a mejorar el nivel de funcionamiento global y por ende su calidad de vida. Todos los pacientes del estudio presentaban una condición de resistencia a tratamientos convencionales indicados, la cual había sido documentada por un equipo interdisciplinario experto.Con o objetivo de avaliar os resultados da Neurocirurgía Funcional Estereotáxica (NFE) sobre o perfil funcional dos pacientes diagnosticados com Patologia Psiquiátrica Resistente (PPR), realizou-se um desenho pré/pós tratamento. 13 pacientes foram avaliados ( = 31 ± 8 anos): sete mulheres diagnosticadas com algum Transtorno da Conduta Alimentar Resistente (TCAR); três mulheres diagnosticadas com Transtornos Resistentes Obsessivo Compulsivo e Depressivo (TOC e DR) e três pacientes (duas mulheres e um homem) diagnosticados com Depressão Resistente (DR). A estes pacientes foi aplicada a Escala de funcionamento do paciente Eixo K, a qual consta de sete sub-escalas, e uma Escala de Avaliação da Atividade Global (EAG) antes do tratamento e depois dele (seis meses posteriores à NFE). Todos os grupos diagnósticos e o total dos pacientes avaliados apresentaram mudanças clínicas positivas; porém, só o grupo de TCAR mostrou importantes mudanças clínicas de melhoria no perfil de funcionamento, sendo esta diferença estatisticamente significativa (pré Md= 56; pós Md= 84; z= - 2.36, p <0.05). Com a evidência obtida observou-se que a NFE representa uma opção terapêutica emergente efetiva orientada a diminuir o sofrimento dos pacientes com PPR, bem como a melhorar o nível de funcionamento global e portanto sua qualidade de vida. Todos os pacientes do estudo apresentavam uma condição de resistência a tratamentos convencionais indicados, a qual havia sido documentada por uma equipe interdisciplinar de especialistas.In order to evaluate the results of the Stereotactic Functional Neurosurgery (SFN) on the functional profile of patients diagnosed with Resistant Psychiatric Pathology (RPP), a pre / post treatment design was performed. Thirteen patients were assessed ( = 31 ± 8 years): seven women diagnosed with some type of Resistant Eating Disorder (RED); three women diagnosed with Resistant Obsessive Compulsive Disorder and Resistant Depression (TOC and RD), and three patients (two women and one man) diagnosed with Resistant Depression (RD). The Patient's Functioning Scale, axis K, consisting of seven subscales, and the Assessment of Global Activity Scale (AGAS) were applied before and after treatment (6 months after FSN). All diagnostic groups and all the patients assessed showed positive clinical changes. However, only the RED group showed important clinical improvement in the performance profile with a statistically significant difference (pre Md = 56, Md = 84 post , z = - 2.36, p <0.05). With the evidence obtained it was noted that SFN represents an effective therapeutic option aimed at reducing the suffering of patients with RPP and improve their overall level of functioning and therefore their quality of life. All patients in the study had a condition indicating resistance to conventional treatments which had been documented by an expert multidisciplinary team

    Genetic connectivity of an endangered shark across nursery areas from the Eastern Tropical Pacific

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    Defining demographically independent units and understanding gene flow between them is essential for managing and conserving exploited populations. The scalloped hammerhead shark, Sphyrna lewini , is a coastal semi-oceanic species found worldwide in tropical and subtropical waters. Pregnant females give birth in shallow coastal estuarine habitats that serve as nursery grounds for neonates and small juveniles, and adults move offshore and become highly migratory. We evaluated the population structure and connectivity of S. lewini in coastal areas across the Eastern Tropical Pacific (ETP) using both sequences of the mitochondrial DNA control region (mtCR) and nuclear-encoded microsatellite loci. The mtCR defined two genetically discrete geographic groups: the Mexican Pacific and the central-southern Eastern Tropical Pacific (Guatemala, Costa Rica, Panamá, and Colombia). Overall, the mtCR data showed low levels of haplotype diversity ranged from 0.000 to 0.608, while nucleotide diversity ranged from 0.000 to 0.0015. A more fine-grade population structure analysis was detected using microsatellite loci where Guatemala, Costa Rica, and Panamá differed significantly. Genetic diversity analysis with nuclear markers revealed an observed heterozygosity ranging from 0.68 to 0.71 and an allelic richness from 5.89 to 7.00. Relatedness analysis revealed that individuals within nursery areas were more closely related than expected by chance, suggesting that S. lewini may exhibit reproductive philopatric behaviour within the ETP. Findings of at least two different management units, and evidence of philopatric behaviour call for intensive conservation actions for this critically endangered species in the ETP.Universidad de Costa Rica/[801-B6-214]/UCR/Costa RicaNational Secretary of Science and Technology/[FID-156]/SENACYT/EcuadorThe Phoenix Zoo/[no.33297]//Estados UnidosPADI Foundation/[no.32809]//Estados UnidosRufford Foundation/[no.22366-1]//Reino UnidosWaitt Foundation/[no.33297]//Estados UnidosFundación Reserva Ojochal/[]//Costa RicaThe Whitley Fund for Nature/[]/WFN/Reino UnidoSandler Family Foundation/[]//Estados UnidosOsa Conservation/[]//Costa RicaUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de BiologíaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Biología Celular y Molecular (CIBCM)UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR

    The outcome of boosting mitochondrial activity in alcohol-associated liver disease is organ-dependent.

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    BACKGROUND AND AIMS Alcohol-associated liver disease (ALD) accounts for 70% of liver-related deaths in Europe, with no effective approved therapies. Although mitochondrial dysfunction is one of the earliest manifestations of alcohol-induced injury, restoring mitochondrial activity remains a problematic strategy due to oxidative stress. Here, we identify methylation-controlled J protein (MCJ) as a mediator for ALD progression and hypothesize that targeting MCJ may help in recovering mitochondrial fitness without collateral oxidative damage. APPROACH AND RESULTS C57BL/6 mice [wild-type (Wt)] Mcj knockout and Mcj liver-specific silencing (MCJ-LSS) underwent the NIAAA dietary protocol (Lieber-DeCarli diet containing 5% (vol/vol) ethanol for 10 days, plus a single binge ethanol feeding at day 11). To evaluate the impact of a restored mitochondrial activity in ALD, the liver, gut, and pancreas were characterized, focusing on lipid metabolism, glucose homeostasis, intestinal permeability, and microbiota composition. MCJ, a protein acting as an endogenous negative regulator of mitochondrial respiration, is downregulated in the early stages of ALD and increases with the severity of the disease. Whole-body deficiency of MCJ is detrimental during ALD because it exacerbates the systemic effects of alcohol abuse through altered intestinal permeability, increased endotoxemia, and dysregulation of pancreatic function, which overall worsens liver injury. On the other hand, liver-specific Mcj silencing prevents main ALD hallmarks, that is, mitochondrial dysfunction, steatosis, inflammation, and oxidative stress, as it restores the NAD + /NADH ratio and SIRT1 function, hence preventing de novo lipogenesis and improving lipid oxidation. CONCLUSIONS Improving mitochondrial respiration by liver-specific Mcj silencing might become a novel therapeutic approach for treating ALD.This work was supported by grants from Ministerio de Ciencia e Innovación, Programa Retos-Colaboración RTC2019-007125-1 (for Jorge Simon and Maria Luz Martinez-Chantar); Ministerio de Economía, Industria y Competitividad, Retos a la Sociedad AGL2017- 86927R (for F.M.); Instituto de Salud Carlos III, Proyectos de Investigación en Salud DTS20/00138 and DTS21/00094 (for Jorge Simon and Maria Luz Martinez-Chantar, and Asis Palazon. respectively); Instituto de Salud Carlos III, Fondo de Investigaciones Sanitarias co-founded by European Regional Development Fund/European Social Fund, “Investing in your future” PI19/00819, “Una manera de hacer Europa” FIS PI20/00765, and PI21/01067 (for Jose J. G. Marin., Pau Sancho-Bru,. and Mario F. Fraga respectively); Departamento de Industria del Gobierno Vasco (for Maria Luz Martinez-Chantar); Asturias Government (PCTI) co-funding 2018-2023/ FEDER IDI/2021/000077 (for Mario F. Fraga.); Ministerio de Ciencia, Innovación y Universidades MICINN: PID2020-117116RB-I00, CEX2021-001136-S PID2020-117941RB-I00, PID2020-11827RB-I00 and PID2019-107956RA-100 integrado en el Plan Estatal de Investigación Científica y Técnica y Innovación, cofinanciado con Fondos FEDER (for Maria Luz Martinez-Chantar, Francisco J Cubero., Yulia A Nevzorova and Asis Palazon); Ayudas Ramón y Cajal de la Agencia Estatal de Investigación RY2013-13666 and RYC2018- 024183-I (for Leticia Abecia and Asis Palazon); European Research Council Starting Grant 804236 NEXTGEN-IO (for Asis Palazon); The German Research Foundation SFB/TRR57/P04, SFB1382-403224013/ A02 and DFG NE 2128/2-1 (for Francisco J Cubero and Yulia A Nevzorova); National Institute of Health (NIH)/National Institute of Alcohol Abuse and Alcoholism (NIAAA) 1U01AA026972-01 (For Pau Sancho-Bru); Junta de Castilla y León SA074P20 (for Jose J. G. Marin); Junta de Andalucía, Grupo PAIDI BIO311 (for Franz Martin); CIBERER Acciones Cooperativas y Complementarias Intramurales ACCI20-35 (for Mario F. Fraga); Ministerio de Educación, Cultura y Deporte FPU17/04992 (for Silvia Ariño); Fundació Marato TV3 201916-31 (for Jose J. G. Marin.); Ainize Pena-Cearra is a fellow of the University of the Basque Country (UPV/ EHU); BIOEF (Basque Foundation for Innovation and Health Research); Asociación Española contra el Cáncer (Maria Luz Martinez-Chantar and Teresa C. Delgado.); Fundación Científica de la Asociación Española Contra el Cáncer (AECC Scientific Foundation) Rare Tumor Calls 2017 (for Maria Luz Martinez-Chantar); La Caixa Foundation Program (for Maria Luz Martinez-Chantar); Proyecto Desarrollo Tecnologico CIBERehd (for Maria Luz Martinez-Chantar); Ciberehd_ISCIII_MINECO is funded by the Instituto de Salud Carlos III.S

    European Registry on Helicobacter pylori Management: Effectiveness of First and Second-Line Treatment in Spain

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    The management of Helicobacter pylori infection has to rely on previous local effectiveness due to the geographical variability of antibiotic resistance. The aim of this study was to evaluate the effectiveness of first and second-line H. pylori treatment in Spain, where the empirical prescription is recommended. A multicentre prospective non-interventional registry of the clinical practice of European gastroenterologists concerning H. pylori infection (Hp-EuReg) was developed, including patients from 2013 until June 2019. Effectiveness was evaluated descriptively and through a multivariate analysis concerning age, gender, presence of ulcer, proton-pump inhibitor (PPI) dose, therapy duration and compliance. Overall, 53 Spanish hospitals were included, and 10,267 patients received a first-line therapy. The best results were obtained with the 10-day bismuth single-capsule therapy (95% cure rate by intention-to-treat) and with both the 14-day bismuth-clarithromycin quadruple (PPI-bismuth-clarithromycin-amoxicillin, 91%) and the 14-day non-bismuth quadruple concomitant (PPI-clarithromycin-amoxicillin-metronidazole, 92%) therapies. Second-line therapies were prescribed to 2448 patients, with most-effective therapies being the triple quinolone (PPI-amoxicillin-levofloxacin/moxifloxacin) and the bismuth-levofloxacin quadruple schemes (PPI-bismuth-levofloxacin-amoxicillin) prescribed for 14 days (92%, 89% and 90% effectiveness, respectively), and the bismuth single-capsule (10 days, 88.5%). Compliance, longer duration and higher acid inhibition were associated with higher effectiveness. "Optimized" H. pylori therapies achieve over 90% success in Spain

    Matemáticas en contexto

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    El libro compila estrategias didácticas derivadas del programa de formación complementario escritas por instructores técnicos de diferentes regionales del país, describe la forma en que se incorpora el conocimiento matemático en campos específicos de diferentes áreas de formación laboral basado en las teorías didácticas y reflexiones pedagógicas de instructores.The book compiles the didactic strategies derived from the complementary training program by the technical instructors of the regional media of the country, describes the way in which mathematical knowledge is incorporated in the fields of different areas of work training based on theories didactic and pedagogical reflections of instructors.Consideraciones frente al aprendizaje de las matemáticas -- Perspectiva constructivista -- Teoría de las situaciones didácticas -- Modelación matemática -- Mediación tecnológica -- Pensamiento numérico variacional -- Pensamiento numérico -- Pensamiento variacional -- Diseño de modelo matemático con aplicación de costos de producción -- Modelo matemático del consumo de gas en un artefacto afectado por su presión de trabajo -- Planeación de la producción agrícola: Caso plan óptimo de siembra que permita alcanzar la máxima rentabilidad del cultivo -- Estudio del Álgebra de Boole -- Diseño de un modelo de inventarios para una pequeña empresa de calzado de dotación -- Estudio de la Ley de Ohm mediante herramienta interactiva -- Pensamiento métrico-geométrico -- Pensamiento geométrico -- Pensamiento métrico -- Caso de optimización de recursos en el sector industrial de la confección -- Optimización de espacios para huertas urbanas -- Optimización de los costos del espacio de almacenamiento en microempresas y pequeñas empresas de acuerdo con las normas de seguridad vigentes -- Unidad de medida métrica para confección de ropa exterior femenina -- Optimización de recursos aplicando el proceso administrativo -- Pensamiento aleatorio -- Estadística Básica para Articulación con la Media -- Evaluación del impacto de la accidentalidad en la implementación del Sistema de Gestión de Seguridad y Salud en el Trabajo (sg-sst) por medio de indicadores -- Identificar los aspectos de la declaración de renta para una persona natural no obligada a llevar contabilidad -- Fortalecimiento de la estadística: caso de las unidades productivas del Centro de Biotecnología Agropecuaria -- Estadística dinámica -- Resultados preliminaresna[270 páginas

    Correction : Chaparro et al. Incidence, Clinical Characteristics and Management of Inflammatory Bowel Disease in Spain: Large-Scale Epidemiological Study. J. Clin. Med. 2021, 10, 2885

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    The authors wish to make the following corrections to this paper [...]

    Incidence, Clinical Characteristics and Management of Inflammatory Bowel Disease in Spain : Large-Scale Epidemiological Study

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    (1) Aims: To assess the incidence of inflammatory bowel disease (IBD) in Spain, to describe the main epidemiological and clinical characteristics at diagnosis and the evolution of the disease, and to explore the use of drug treatments. (2) Methods: Prospective, population-based nationwide registry. Adult patients diagnosed with IBD-Crohn's disease (CD), ulcerative colitis (UC) or IBD unclassified (IBD-U)-during 2017 in Spain were included and were followed-up for 1 year. (3) Results: We identified 3611 incident cases of IBD diagnosed during 2017 in 108 hospitals covering over 22 million inhabitants. The overall incidence (cases/100,000 person-years) was 16 for IBD, 7.5 for CD, 8 for UC, and 0.5 for IBD-U; 53% of patients were male and median age was 43 years (interquartile range = 31-56 years). During a median 12-month follow-up, 34% of patients were treated with systemic steroids, 25% with immunomodulators, 15% with biologics and 5.6% underwent surgery. The percentage of patients under these treatments was significantly higher in CD than UC and IBD-U. Use of systemic steroids and biologics was significantly higher in hospitals with high resources. In total, 28% of patients were hospitalized (35% CD and 22% UC patients, p < 0.01). (4) Conclusion: The incidence of IBD in Spain is rather high and similar to that reported in Northern Europe. IBD patients require substantial therapeutic resources, which are greater in CD and in hospitals with high resources, and much higher than previously reported. One third of patients are hospitalized in the first year after diagnosis and a relevant proportion undergo surgery
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