3,219 research outputs found
Street and dwelling: relationship between public space and community life
The public space is basic and complementary to dwelling, because of the activities that are done there, so, this space is considered as a physical, functional and sociocultural extension of what occurs within houses. In order to understand this relationship, it is important to know the historical fact through their recent expression, because it is an opportunity to rethink the proper and consistency of our public spaces as well as their scales, fields and complementary relationships with the aim to create an external and holistic habitat of dwelling but at the same time interdependent with it, fundamental basis for defining its quality and livability. The methodology is mixed: observation of the buildings as well as inhabitant and user survey.El espacio público es fundamental como ámbito complementario a la vivienda debido a que en él ocurren las actividades que no tienen cabida en ésta. El espacio público es extensión física funcional y sociocultural de lo que ocurre al interior del hogar. Para comprender esta relación, es vital conocer desde una perspectiva histórica sus manifestaciones aún presentes como la oportunidad para repensar sobre lo oportuno y consistente que tienen nuestros espacios públicos, sus escalas, sus ámbitos y sus relaciones complementarias para conformar el todo del hábitat externo a la vivienda, pero interdependiente con ella, y base fundamental para definir la calidad de éste y su habitabilidad. La metodología es mixta de observación de lo construido e interrogación al habitante y usuario
Development of a novel epoxy resin based on epoxidized chia oil as matrix and maleinized chia oil as bio-renewable crosslinker
[EN] In this work novel thermosetting resins with high bio-based content have been developed derived from chia seed oil (CO). Epoxidized chia seed oil (ECO) was used as bio-based epoxy matrix with different mixtures of crosslinker agents, that is, methyl nadic anhydride (MNA) as petroleum-derived and maleinized chia seed oil (MCO) as bio-based crosslinker. The chemically modified oils from CO, that is, ECO and MCO, and MNA were analyzed by titration and FT-IR. Additional 1H NMR analysis was performed to characterize MCO structure. Two different behaviors were observed using the mixtures of crosslinkers. On one hand, MNA increases the rigidity with bio-based content of 54.2%. On the other hand, the addition of MCO provides higher ductility with bio-based content up to 98%. The same trend was observed by DMTA analysis. The novel cured resins were successfully crosslinked as demonstrated by the mechanical properties, FT-IR analyses, and gel content. Based on the results, it is concluded that MCO presents higher reactivity than MNA, decreasing curing time with possible energy saving at industrial level. In general, the results showed that adding the appropriate amount of MCO, green thermosetting resins with the desired thermal and mechanical properties can be manufactured with high bio-based content.Ministry of Science and Innovation,Grant/Award Number: PID2020-119142RA-I00; Universitat Politecnica de Valencia, Grant/Award Number: PAID-2019-SP20190013; Generalitat Valenciana,Grant/Award Number: ACIF/2020/233.
This research work was funded by the Ministry of Science and Innovation-¿Retos de la Sociedad¿. Project references: PID2020-119142RA-I00. I. Dominguez-Candela wants to thank Universitat Politècnica de València for his FPI grant (PAID-2019-SP20190013) and Generalitat Valenciana-GVA (ACIF/2020/233). Funding for open access charge: CRUE-Universitat Politècnica de València.Domínguez-Candela, I.; Perez-Nakai, A.; Torres-Roca, E.; Lora-García, J.; Fombuena, V. (2023). Development of a novel epoxy resin based on epoxidized chia oil as matrix and maleinized chia oil as bio-renewable crosslinker. Journal of Applied Polymer Science. 140(10):1-14. https://doi.org/10.1002/app.535741141401
Beyond the CNS: The many peripheral roles of APOE
Apolipoprotein E (APOE) is a multifunctional protein synthesized and secreted by multiple mammalian tissues. Although hepatocytes contribute about 75% of the peripheral pool, APOE can also be expressed in adipose tissue, the kidney, and the adrenal glands, among other tissues. High levels of APOE production also occur in the brain, where it is primarily synthesized by glia, and peripheral and brain APOE pools are thought to be distinct. In humans, APOE is polymorphic, with three major alleles (e2, e3, and e4). These allelic forms dramatically alter APOE structure and function. Historically, the vast majority of research on APOE has centered on the important role it plays in modulating risk for cardiovascular disease and Alzheimer's disease. However, the established effects of this pleiotropic protein extend well beyond these two critical health challenges, with a demonstrated roles for APOE across a wide spectrum of biological conditions, including adipose tissue function and obesity, metabolic syndrome and diabetes, fertility and longevity, and immune function. While the spectrum of biological systems in which APOE plays a role seems implausibly wide at first glance, there are some potential unifying mechanisms that could tie these seemingly disparate disorders together. In the current review, we aim to concisely summarize a wide breadth of APOE-associated pathologies and to analyze the influence of APOE in the development of several distinct disorders in order to provide insight into potential shared mechanisms implied in these various pathophysiological processes
Programa de entrenamiento para desarrollar habilidades sociales en estudiantes universitarios
El estudio, tuvo como objetivo determinar los efectos de un programa de entrenamiento para desarrollar habilidades sociales en estudiantes universitarios, se destacó por ser de tipo descriptivo con un diseño experimental de campo. Seleccionando una muestra de veinticinco estudiantes. Se aplico un instrumento, denominado escala Multidimensional de Expresión Social Parte Motora y Parte Cognitiva. Los datos se analizaron mediante estadísticas descriptivas, se determinó que los estudiantes tenían deficiencias en algunas habilidades sociales y posterior a la puesta en
práctica del programa fueron adquiridas o descubiertas por ellos
Proyecto PREDIRCAM 2. Análisis preliminar de uso y valoración de la plataforma
En la actualidad, la prevalencia de las enfermedades no transmisibles (Non-communicable diseases NCD) y la cantidad de muertes causadas por éstas es muy elevada, en su mayoría, consecuencia del envejecimiento de la población, el aumento de la obesidad y los hábitos de vida sedentarios. En este trabajo se describen el funcionamiento y los resultados preliminares del proyecto Predircam 2, destinado al desarrollo y validación de una plataforma inteligente de tecnologías biomédicas para la monitorización, prevención y tratamiento personalizados del sobrepeso, la obesidad y la prevención de enfermedades asociadas como la diabetes, hipertensión arterial o alteraciones del metabolismo lipídico. El objetivo de este trabajo es presentar los resultados preliminares del análisis del uso de la plataforma, la evaluación de la usabilidad y la valoración de la atención recibida por los pacientes en relación a los profesionales sanitarios
Regular Humoral and Cellular Immune Responses in Individuals with Chronic Myeloid Leukemia Who Received a Full Vaccination Schedule against COVID-19
Individuals with chronic myeloid leukemia (CML) constitute a unique group within individuals with oncohematological disease (OHD). They receive treatment with tyrosine kinase inhibitors (TKIs) that present immunomodulatory properties, and they may eventually be candidates for treatment discontinuation under certain conditions despite the chronic nature of the disease. In addition, these individuals present a lower risk of infection than other immunocompromised patients. For this study, we recruited a cohort of 29 individuals with CML in deep molecular response who were on treatment with TKIs (n = 23) or were on treatment-free remission (TFR) (n = 6), and compared both humoral and cellular immune responses with 20 healthy donors after receiving the complete vaccination schedule against SARS-CoV-2. All participants were followed up for 17 months to record the development of COVID-19 due to breakthrough infections. All CML individuals developed an increased humoral response, with similar seroconversion rates and neutralizing titers to healthy donors, despite the presence of high levels of immature B cells. On the whole, the cellular immune response was also comparable to that of healthy donors, although the antibody dependent cytotoxic activity (ADCC) was significantly reduced. Similar rates of mild breakthrough infections were observed between groups, although the proportion was higher in the CML individuals on TFR, most likely due to the immunomodulatory effect of these drugs. In conclusion, as with the healthy donors, the vaccination did not impede breakthrough infections completely in individuals with CML, although it prevented the development of severe or critical illness in this special population of individuals with OHD.This work was supported by projects PI21/00877 and PI22CIII/00059 funded by the Strategic Action in Health of the Instituto de Salud Carlos III (ISCIII) and co-funded by the European Regional Development Fund (ERDF) “A way to make Europe”. The work of Sara Rodríguez-Mora is financed by NIH grant R01AI143567. The work of Guiomar Casado is financed by the Consejería de Educación, Universidades, Ciencia y Portavocía of the Comunidad de Madrid. The work of Montserrat Torres is financed by CIBERINFEC (CB21/13/00015), co-financed by ERDF. The work of Clara Sánchez-Menéndez is financed by Programa Investigo, FIBio HRC-IRYCIS, co-financed by ERDF.S
Impaired Antibody-Dependent Cellular Cytotoxicity in a Spanish Cohort of Patients With COVID-19 Admitted to the ICU
SARS-CoV-2 infection causes COVID-19, ranging from mild to critical disease in symptomatic subjects. It is essential to better understand the immunologic responses occurring in patients with the most severe outcomes. In this study, parameters related to the humoral immune response elicited against SARS-CoV-2 were analysed in 61 patients with different presentations of COVID-19 who were recruited in Hospitals and Primary Healthcare Centres in Madrid, Spain, during the first pandemic peak between April and June 2020. Subjects were allocated as mild patients without hospitalization, severe patients hospitalized or critical patients requiring ICU assistance. Critical patients showed significantly enhanced levels of B cells with memory and plasmablast phenotypes, as well as higher levels of antibodies against SARS-CoV-2 with neutralization ability, which were particularly increased in male gender. Despite all this, antibody-dependent cell-mediated cytotoxicity was defective in these individuals. Besides, patients with critical COVID-19 also showed increased IgG levels against herpesvirus such as CMV, EBV, HSV-1 and VZV, as well as detectable CMV and EBV viremia in plasma. Altogether, these results suggest an enhanced but ineffectual immune response in patients with critical COVID-19 that allowed latent herpesvirus reactivation. These findings should be considered during the clinical management of these patients due to the potential contribution to the most severe disease during SARS-CoV-2 infection.This work was supported by the Coordinated Research Activities at the Centro Nacional de Microbiología (CNM, Instituto de Salud Carlos III) (COV20_00679) to promote an integrated response against SARS-CoV-2 in Spain (Spanish Ministry of Science and Innovation) that is coordinated by Dr Inmaculada Casas (WHO National Influenza Center of the CNM) and a generous donation provided by Chiesi España, S.A.U. (Barcelona, Spain). The funder was not involved in the study design, collection, analysis, interpretation of data, the writing of this article or the decision to submit it for publication. This work was also supported by the Spanish Ministry of Economy and Competitiveness (PID2019 110275RB-I00); the Spanish AIDS Research Network RD16CIII/0002/0001 that is included in Acción Estratégica en Salud, Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica 2016-2020, Instituto de Salud Carlos III, European Region Development Fund (ERDF); Miguel Servet - AESI, MPY 341/21. The work of ML-H and SR is financed by NIH grant R01AI143567. The work of MT is supported by Instituto de Salud Carlos III (COV20_00679). The work of LV is supported by a predoctoral grant from Instituto de Salud Carlos III (FIS PI16CIII/00034-ISCIII-FEDER).S
Early Cellular and Humoral Responses Developed in Oncohematological Patients after Vaccination with One Dose against COVID-19
Individuals with oncohematological diseases (OHD) may develop an impaired immune response against vaccines due to the characteristics of the disease or to its treatment. Humoral response against SARS-CoV-2 has been described to be suboptimal in these patients, but the quality and efficiency of the cellular immune response has not been yet completely characterized. In this study, we analyzed the early humoral and cellular immune responses in individuals with different OHD after receiving one dose of an authorized vaccine against SARS-CoV-2. Humoral response, determined by antibodies titers and neutralizing capacity, was overall impaired in individuals with OHD, except for the cohort of chronic myeloid leukemia (CML), which showed higher levels of specific IgGs than healthy donors. Conversely, the specific direct cytotoxic cellular immunity response (DCC) against SARS-CoV-2, appeared to be enhanced, especially in individuals with CML and chronic lymphocytic leukemia (CLL). This increased cellular immune response, developed earlier than in healthy donors, showed a modest cytotoxic activity that was compensated by significantly increased numbers, likely due to the disease or its treatment. The analysis of the immune response through subsequent vaccine doses will help establish the real efficacy of COVID-19 vaccines in individuals with OHD.This work was supported by the Strategic Action in Health 2017–2020 of the Instituto de Salud Carlos III (PI21/00877); the Coordinated Research Activities at the National Center of Microbiology (CNM, Instituto de Salud Carlos III) (COV20_00679) to promote an integrated response against SARS-CoV-2 in Spain (Spanish Ministry of Science and Innovation) that is coordinated by Dr Inmaculada Casas (WHO National Influenza Center of the CNM); a generous donation provided by Chiesi España, S.A.U. (Barcelona, Spain). The work of Sara Rodríguez-Mora is financed by NIH grant R01AI143567. The work of Montserrat Torres is financed by the Hematology and Hemotherapy Service of the Hospital Universitario Ramón y Cajal. The work of Fernando Ramos-Martín is financed by the Spanish Ministry of Science and Innovation (PID2019-110275RB-I00). The work of Lorena Vigón is supported by a pre-doctoral grant from Instituto de Salud Carlos III (FIS PI16CIII/00034-ISCIII-FEDER). The work of Mario Manzanares is supported by a pre-doctoral grant from Instituto de Salud Carlos III (ISCIII-PFIS FI20CIII/00021).S
Strong Cellular Immune Response, but Not Humoral, against SARS-CoV-2 in Oncohematological Patients with Autologous Stem Cell Transplantation after Natural Infection
Oncohematological patients show a low immune response against SARS-CoV-2, both to natural infection and after vaccination. Most studies are focused on the analysis of the humoral response; therefore, the information available about the cellular immune response is limited. In this study, we analyzed the humoral and cellular immune responses in nine individuals who received chemotherapy for their oncohematological diseases, as well as consolidation with autologous stem cell transplantation (ASCT), after being naturally infected with SARS-CoV-2. All individuals had asymptomatic or mild COVID-19 and were not vaccinated against SARS-CoV-2. These results were compared with matched healthy individuals who also had mild COVID-19. The humoral response against SARS-CoV-2 was not detected in 6 of 9 oncohematological individuals prior to ASCT. The levels of antibodies and their neutralization capacity decreased after ASCT. Conversely, an enhanced cytotoxic activity against SARS-CoV-2-infected cells was observed after chemotherapy plus ASCT, mostly based on high levels of NK, NKT, and CD8+TCRγδ+ cell populations that were able to produce IFNγ and TNFα. These results highlight the importance of performing analyses not only to evaluate the levels of IgGs against SARS-CoV-2, but also to determine the quality of the cellular immune response developed during the immune reconstitution after ASCT.This work was supported by the Coordinated Research Activities at the Centro Nacional de Microbiología (CNM, Instituto de Salud Carlos III) (COV20_00679) to promote an integrated response against SARS-CoV-2 in Spain (Spanish Ministry of Science and Innovation) that is coordinated by Dr Inmaculada Casas (WHO National Influenza Center of the CNM), the Spanish Ministry of Science and Innovation (PID2019-110275RB-I00), and AES 2021 grant from Instituto de Salud Carlos III (PI21/00877). The work of Sara Rodríguez-Mora is financed by NIH grant R01AI143567. The work of Montserrat Torres is supported by Instituto de Salud Carlos III (COV20_00679). The work of Lorena Vigón is supported by a pre-doctoral grant from Instituto de Salud Carlos III (FIS PI16CIII/00034-ISCIII-FEDER).S
El impacto de la cultura organizacional sobre la actitud al cambio de los colaboradores en una empresa del sector retail en Perú
La presente investigación tuvo como objetivo identificar el impacto de los tipos de cultura organizacional en la actitud al cambio de los colaboradores en una empresa peruana de retail. Para ello, se utilizó en primer lugar como base el modelo de actitud al cambio propuesto por Dunham, Grube, Gardner, Cummings y Pierce (1989). En segundo lugar, para identificar los tipos de cultura organizacional, se aplicó el modelo de Denison (Denison & Neale, 2000), con la finalidad de identificar el impacto de los tipos de cultura organizacional en la actitud al cambio.
Sobre la base de estas investigaciones, se diseñó un estudio cuantitativo, explicativo, no experimental y de corte transversal en el que participaron 506 colaboradores de tiendas en Lima Metropolitana y provincias de una empresa de retail. Los resultados encontrados demuestran que el tipo de cultura organizacional involucramiento predice de manera significativa y positiva la actitud al cambio organizacional total. A mayor profundidad, se demostró también que las subdimensiones de cultura empowerment, acuerdo, aprendizaje organizacional, y dirección e intención estratégica impactan en la subdimensión cognitiva de la actitud al cambio, y que la subdimensión de cultura metas y objetivos impacta en la subdimensión afectiva de la actitud al cambio
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