3,224 research outputs found

    HAVE SPANISH COMPANIES BUILT GREATER ENTREPRENEURSHIP AFTER PRIVATIZATION?

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    This study analyses some of the strategic and organizational changes experienced in public firms following privatization in its double facet: sale of companies and deregulation. Specifically, we analyse the process of innovation in terms of products, processes and organization. We also look into the development of new businesses and strategic renewal, which in the end shape the entrepreneurial capacity of a company. A sample of Spanish firms which were privatized between 1985 and 2000 shows that after privatization, these companies have experienced a significant increase in entrepreneurship. These changes are even more appreciable when a high sector competition is added to the ownership shift. Once they join the private sector, their level of product, process and organizational innovation is higher. They also develop new businesses at national level, reinforce their international activity and embark on strategic renewal processes by shedding the lesser profitable businesses and modifying their competitive strategy so as to gain efficiency.

    Comprehensive Quantification of the Modified Proteome Reveals Oxidative Heart Damage in Mitochondrial Heteroplasmy

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    Post-translational modifications hugely increase the functional diversity of proteomes. Recent algorithms based on ultratolerant database searching are forging a path to unbiased analysis of peptide modifications by shotgun mass spectrometry. However, these approaches identify only one-half of the modified forms potentially detectable and do not map the modified residue. Moreover, tools for the quantitative analysis of peptide modifications are currently lacking. Here, we present a suite of algorithms that allows comprehensive identification of detectable modifications, pinpoints the modified residues, and enables their quantitative analysis through an integrated statistical model. These developments were used to characterize the impact of mitochondrial heteroplasmy on the proteome and on the modified peptidome in several tissues from 12-week-old mice. Our results reveal that heteroplasmy mainly affects cardiac tissue, inducing oxidative damage to proteins of the oxidative phosphorylation system, and provide a molecular mechanism explaining the structural and functional alterations produced in heart mitochondria.We thank Simon Bartlett (CNIC) for English editing. This study was supported by competitive grants from the Spanish Ministry of Economy and Competitiveness (MINECO) (BIO2015-67580-P) through the Carlos III Institute of Health-Fondo de Investigacion Sanitaria (PRB2, IPT13/0001-ISCIII-SGEFI/FEDER; ProteoRed), by Fundacion La Marato TV3, and by FP7-PEOPLE-2013-ITN ``Next-Generation Training in Cardiovascular Research and Innovation-Cardionext.'' N.B. is a FP7-PEOPLE-2013-ITN-Cardionext Fellow. The CNIC is supported by the MINECO and the Pro-CNIC Foundation, and is a Severo Ochoa Center of Excellence (MINECO Award SEV-2015-0505).S

    Covalently Labeled Fluorescent Exosomes for In Vitro and In Vivo Applications.

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    The vertiginous increase in the use of extracellular vesicles and especially exosomes for therapeutic applications highlights the necessity of advanced techniques for gaining a deeper knowledge of their pharmacological properties. Herein, we report a novel chemical approach for the robust attachment of commercial fluorescent dyes to the exosome surface with covalent binding. The applicability of the methodology was tested on milk and cancer cell-derived exosomes (from U87 and B16F10 cancer cells). We demonstrated that fluorescent labeling did not modify the original physicochemical properties of exosomes. We tested this nanoprobe in cell cultures and healthy mice to validate its use for in vitro and in vivo applications. We confirmed that these fluorescently labeled exosomes could be successfully visualized with optical imaging.This study was supported by the Comunidad de Madrid, projects: “Y2018/NMT-4949 (NanoLiver-CM)” and “S2017/BMD-3867 (RENIM-CM)”; it was also co-funded by the European Structural and Investment Fund. The CNIC is supported by the Instituto de Salud Carlos III (ISCIII), the Ministerio de Ciencia e Innovación (MCIN), and the Pro CNIC Foundation, and it is a Severo Ochoa Center of Excellence (SEV-2015-0505). JV was supported by grants from Instituto de Salud Carlos III (PI18/01833), co-funded by European Regional Development Fund (ERDF) and from Comunidad de Madrid, project “S2017/BMD2737 (ExoHep-CM)”, co-funded by European Structural and Investment Fund. A. Santos-Coquillat is grateful for the financial support from Ministerio de Ciencia e Innovación, Instituto de Salud Carlos III Sara Borrell Fellowship grant CD19/00136.S

    Descriptive study of stress and satisfaction at work in the Saragossa university services and administration staff

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    <p>Abstract</p> <p>Background</p> <p>The notion of stress in connection with the work environment became an important topic during the 1970's, when the first studies on the subject were published and the term of work stress was first coined. In 1974, Freudenberger proposed the term <it>burnout </it>to refer to the condition of physical and emotional exhaustion, as well as the associated negative attitudes, resulting from the intense interaction in working with people. The aim of our study is to examine burnout and job satisfaction in Saragossa University Services and Administration Staff (SAS) and detect the main factors which could contribute to too much stress, because job stress has emerged as a major psychosocial influence on mental health, associated with burnout.</p> <p>Methods</p> <p>24 people from the Services and Administration Staff in the University of Saragossa participated in the study. The research was carried out during the implementation of a module on Stress Management organised by the University of Saragossa and commissioned to the Unit for Research in Physical Therapy (University School of Health Sciences) from that University. This research is an exploratory research to improve the stress management program. A personal interview was carried out and additionally, participants were given the Maslach Burnout Inventory and the Scale of Satisfaction at Work of Warr, Cook & Wall.</p> <p>Results</p> <p>However using small sample this is worth to state that participants present most of them low burnout levels in the burnout scale. Only in one person high exhaustion level was reflected, even though other seven showed mean levels; in the professional self-esteem section, most of them showed high self-esteem, with two cases of low self-esteem and five with mean level.</p> <p>With regard to satisfaction people participating in the study show mean levels in intrinsic as much as in extrinsic factors and general satisfaction.</p> <p>Conclusions</p> <p>Services and Administration Staff from the University of Saragossa shows low burnout levels linked with high professional self-esteem and low emotional exhaustion and depersonalization.</p> <p>It has been found also medium levels in work satisfaction probably related with the continuous quality improvement efforts in the academics environment to create protective factors in decreasing levels of job stress.</p> <p>These results show that not only personality or temperament have an influence on burnout and stress, also the job conditions are related with these diseases. These aspects should be taken into account in the design of stress prevention programme at work.</p

    Ensamble de aves en zonas con diferente grado de urbanización en la ciudad de Bahía

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    La fragmentación y cambios en la vegetación se encuentran entre los procesos relacionados a la urbanización con mayor incidencia sobre las aves. El objetivo del trabajo es analizar las variaciones en el ensamble de aves según el grado de urbanización en la ciudad de Bahía Blanca, Buenos Aires. Se definieron 20 transectas de 100m de longitud (ambas veredas) en el micro-centro, macro-centro y periferia de la ciudad. Se realizaron dos muestreos semanales de octubre a diciembre de 2007. Se registró la riqueza y abundancia de aves, las perchas utilizadas y el número de automóviles/personas transitando por minuto. Se observaron 25 especies de aves, de las cuales las más comunes fueron Columba livia, Zenaida auriculata y Passer domesticus. Las transectas con mayor tránsito vehicular y peatonal mostraron las menores riquezas específicas. La mayoría de las aves observadas utilizaron árboles como perchas para posarse. Los gremios más representados fueron los granívoros, omnívoros e insectívoros. Nuestros resultados indican que el impacto de la urbanización sobre los ambientes naturales podría provocar la retracción de algunas especies y favorecer la expansión de otras ampliamente distribuidas.Fragmentation and vegetation changes are processes related to urbanization with an important incidence on birds. In this work we analize the bird assemblage variations along an urban gradient in Bahía Blanca city, Buenos Aires. Twenty transects were established, 100 metres long and 12 metres wide, in the micro-centre, macro-centre and the periphery of the city. Two samples a week were taken from october to december. We registered richness, bird abundance, perche-sites and number of vehicles/people per minute. Twenty five species were observed and Columba livia, Zenaida auriculata and Passer domesticus were the most common species. The transects with more vehicular and pedestrian traffic showed the minor specific richnesses. The most observed birds used trees as perche-sites. Granivores, omnivores and insectivores were the most represented guilds. Our results indicate that the impact of urbanization on natural environments could provoke the retraction of some species and promote the expansion of other of them widely distributed.Fil: Germain, Paola. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; ArgentinaFil: Cuevas, Yannina Andrea. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; ArgentinaFil: Sanhueza, Cristina del Carmen. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; ArgentinaFil: Tizón, Francisco Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Loydi, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: de Villalobos, Ana Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Zapperi, Georgina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaFil: Vazquez, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Pompozzi, Gabriel Alejandro. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Zoología de Invertebrados II; ArgentinaFil: Piovan, María Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentin

    Noninvasive early detection of colorectal cancer by hypermethylation of the LINC00473 promoter in plasma cell-free DNA

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    Background Current noninvasive assays have limitations in the early detection of colorectal cancer. We evaluated the clinical utility of promoter methylation of the long noncoding RNA LINC00473 as a noninvasive biomarker to detect colorectal cancer and associated precancerous lesions. Methods We evaluated the epigenetic regulation of LINC00473 through promoter hypermethylation in colorectal cancer cell lines using bisulfite genomic sequencing and expression analyses. DNA methylation of LINC00473 was analyzed in primary colorectal tumors using 450K arrays and RNA-seq from The Cancer Genome Atlas (TCGA). Tissue-based findings were validated in several independent cohorts of colorectal cancer and advanced colorectal polyp patients by pyrosequencing. We explored the clinical utility of LINC00473 methylation for the early detection of colorectal cancer in plasma cell-free DNA by quantitative methylation-specific PCR and droplet digital PCR. Results LINC00473 showed transcriptionally silencing due to promoter hypermethylation in colorectal cancer cell lines and primary tumors. Methylation of the LINC00473 promoter accurately detected primary colorectal tumors in two independent clinical cohorts, with areas under the receiver operating characteristic curves (AUCs) of 0.94 and 0.89. This biomarker also identified advanced colorectal polyps from two other tissue-based clinical cohorts with high diagnostic accuracy (AUCs of 0.99 and 0.78). Finally, methylation analysis of the LINC00473 promoter in plasma cell-free DNA accurately identified patients with colorectal cancer and advanced colorectal polyps (AUCs of 0.88 and 0.84, respectively), which was confirmed in an independent cohort of patients. Conclusions Hypermethylation of the LINC00473 promoter is a new promising biomarker for noninvasive early detection of colorectal cancer and related precancerous lesions

    Activation of amino acid metabolic program in cardiac HIF1-alpha-deficient mice.

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    HIF1-alpha expression defines metabolic compartments in the developing heart, promoting glycolytic program in the compact myocardium and mitochondrial enrichment in the trabeculae. Nonetheless, its role in cardiogenesis is debated. To assess the importance of HIF1-alpha during heart development and the influence of glycolysis in ventricular chamber formation, herein we generated conditional knockout models of Hif1a in Nkx2.5 cardiac progenitors and cardiomyocytes. Deletion of Hif1a impairs embryonic glycolysis without influencing cardiomyocyte proliferation and results in increased mitochondrial number and transient activation of amino acid catabolism together with HIF2α and ATF4 upregulation by E12.5. Hif1a mutants display normal fatty acid oxidation program and do not show cardiac dysfunction in the adulthood. Our results demonstrate that cardiac HIF1 signaling and glycolysis are dispensable for mouse heart development and reveal the metabolic flexibility of the embryonic myocardium to consume amino acids, raising the potential use of alternative metabolic substrates as therapeutic interventions during ischemic events.This project has been supported by Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Spain and by grants to S.M.-P. from the European Research Council, European Union, FP7-PEOPLE-2010-RG_276891; Fundación TV3 La Marató, Spain, 201507.30.31; Comunidad de Madrid (CAM); Spain and European Union (EU), B2017/BMD-3875; Instituto de Salud Carlos III, Spain, PI17/01817; Universidad Francisco de Vitoria (UFV), Spain and LeDucq Foundation, France, 17CVD04. I.M.-M. was supported by La Caixa-CNIC and Fundacion Alfonso Martín Escudero fellowships, Spain. T.A.-G. was supported by a predoctoral award granted by CAM/EU and UFV, Spain, PEJD-2018-PRE/SAL-9529 and SM-P by a Contrato de Investigadores Miguel Servet (CPII16/00050) and UFV, Spain.S

    West Nile virus emergence in humans in Extremadura, Spain 2020

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    In Spain, the largest human West Nile virus (WNV) outbreak among humans was reported in 2020, constituting the second most important outbreak in Europe that season. Extremadura (southwestern Spain) was one of the affected areas, reporting six human cases. The first autochthonous human case in Spain was reported in Extremadura in 2004, and no other human cases were reported until 2020. In this work, we describe the first WNV human outbreak registered in Extremadura, focusing on the most important clinical aspects, diagnostic results, and control actions which followed. In 2020, from September to October, human WNV infections were diagnosed using a combination of molecular and serological methods (an in-house specific qRT-PCR and a commercial ELISA for anti-WNV IgM and IgG antibodies) and by analysing serum, urine, and/or cerebrospinal fluid samples. Serological positive serum samples were further tested using commercial kits against related flaviviruses Usutu and Tick-borne encephalitis in order to analyse serological reactivity and to confirm the results by neutralisation assays. In total, six cases of WNV infection (five with neuroinvasive disease and one with fever) were identified. Clinical presentation and laboratory findings are described. No viral RNA was detected in any of the analysed samples, but serological cross-reactivity was detected against the other tested flaviviruses. Molecular and serological methods for WNV detection in various samples as well as differential diagnosis are recommended. The largest number of human cases of WNV infection ever registered in Extremadura, Spain, occurred in 2020 in areas where circulation of WNV and other flaviviruses has been previously reported in humans and animals. Therefore, it is necessary to enhance surveillance not only for the early detection and implementation of response measures for WNV but also for other emerging flaviviruses that could be endemic in this area.This research was partially funded by the project PI19CIII/00014 from the Instituto de Salud Carlos III.S

    High prevalence of strongyloidiasis in spain : A hospital-based study

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    Strongyloidiasis is a prevailing helminth infection ubiquitous in tropical and subtropical areas, however, seroprevalence data are scarce in migrant populations, particularly for those coming for Asia. This study aims at evaluating the prevalence of S. stercoralis at the hospital level in migrant populations or long term travellers being attended in out-patient and in-patient units as part of a systematic screening implemented in six Spanish hospitals. A cross-sectional study was conducted and systematic screening for S. stercoralis infection using serological tests was offered to all eligible participants. The overall seroprevalence of S. stercoralis was 9.04% (95%CI 7.76-10.31). The seroprevalence of people with a risk of infection acquired in Africa and Latin America was 9.35% (95%CI 7.01-11.69), 9.22% (7.5-10.93), respectively. The number of individuals coming from Asian countries was significantly smaller and the overall prevalence in these countries was 2.9% (95%CI −0.3-6.2). The seroprevalence in units attending potentially immunosuppressed patients was significantly lower (5.64%) compared with other units of the hospital (10.20%) or Tropical diseases units (13.33%) (p < 0.001). We report a hospital-based strongyloidiasis seroprevalence of almost 10% in a mobile population coming from endemic areas suggesting the need of implementing strongyloidiasis screening in hospitalized patients coming from endemic areas, particularly if they are at risk of immunosuppression

    Zika virus infection: a new public health emergency with great media impact

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    [ES] La infección por virus Zika (VZ) está afectando intensamente a los países latinoamericanos y se ha convertido en una nueva epidemia mediática. Su posible asociación con microcefalia y síndrome de Guillain-Barré motivó que la Organización Mundial de la Salud (OMS) declarase el 1 de febrero de 2016 que esta epidemia constituye una emergencia de salud pública de importancia internacional. Los datos epidemiológicos muestran una incidencia creciente en países como Brasil y Colombia, y que la epidemia sigue expandiéndose por muchos otros países. Desde enero de 2007 hasta el 27 de abril de 2016, la OMS ha detectado transmisión autóctona en 55 países (en 42 de ellos ha sido el primer brote de Zika), y 1198 microcefalias y otros trastornos neurológicos en Brasil. Así mismo, durante 2015 y 2016, 13 países detectaron un incremento de los casos de síndrome de Guillain-Barré y de confirmación de VZ asociado a este. En relación a las microcefalias y otras graves alteraciones cerebrales en recién nacidos de madres afectadas por VZ, las investigaciones ya evidencian una relación causal. Clínicamente muchos casos son asintomáticos y el diagnóstico ofrece dificultades con otras arbovirosis. El control de vectores en España es prioritario, dada la existencia de Aedes albopictus (mosquito tigre). También se recomienda el diagnóstico precoz, evitar viajes a zonas endémicas, mantener relaciones sexuales protegidas y procurar que la prioridad política, que puede evitar que esta epidemia se convierta en una enfermedad endémica de alta prevalencia, no nos haga olvidar otros problemas de salud. [EN] Infection with Zika virus (ZV) has become a new epidemic, with great impact on the media, and is having a strong effect in Latin American countries. Its possible association with microcephaly and Guillain-Barré syndrome prompted the World Health Organization (WHO) to declare on 1 February 2016 that this epidemic is a public health emergency of international concern. Epidemiological data show an increasing incidence in countries like Brazil and Colombia, and that the epidemic is still expanding in many other countries. Between January 2007 and 27 April 2016, the WHO detected transmission in 55 countries (in 42 of these, this was the first outbreak of Zika) and 1,198 microcephalies and other neurological disorders in Brazil. Also, during 2015-2016, 13 countries detected an increase in Guillain-Barré syndrome and/or confirmation of ZV associated with Guillain-Barré syndrome. Research has already demonstrated a causal relationship between microcephaly and other serious brain disorders in newborns and ZV infection in the mother. Clinically, many cases are asymptomatic and it can be difficult to distinguish this diagnosis from that of other arboviruses. Vector control in Spain is a priority because of the presence of the Aedes albopictus (tiger mosquito). Early diagnosis is recommended, as is avoiding travel to endemic areas and unprotected sex, and ensuring that the high political profile, which can prevent this epidemic from becoming a high prevalence endemic disease, does not cause us to forget about other health problems.S
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