61 research outputs found

    NFDI4Culture - Consortium for research data on material and immaterial cultural heritage

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    Digital data on tangible and intangible cultural assets is an essential part of daily life, communication and experience. It has a lasting influence on the perception of cultural identity as well as on the interactions between research, the cultural economy and society. Throughout the last three decades, many cultural heritage institutions have contributed a wealth of digital representations of cultural assets (2D digital reproductions of paintings, sheet music, 3D digital models of sculptures, monuments, rooms, buildings), audio-visual data (music, film, stage performances), and procedural research data such as encoding and annotation formats. The long-term preservation and FAIR availability of research data from the cultural heritage domain is fundamentally important, not only for future academic success in the humanities but also for the cultural identity of individuals and society as a whole. Up to now, no coordinated effort for professional research data management on a national level exists in Germany. NFDI4Culture aims to fill this gap and create a usercentered, research-driven infrastructure that will cover a broad range of research domains from musicology, art history and architecture to performance, theatre, film, and media studies. The research landscape addressed by the consortium is characterized by strong institutional differentiation. Research units in the consortium's community of interest comprise university institutes, art colleges, academies, galleries, libraries, archives and museums. This diverse landscape is also characterized by an abundance of research objects, methodologies and a great potential for data-driven research. In a unique effort carried out by the applicant and co-applicants of this proposal and ten academic societies, this community is interconnected for the first time through a federated approach that is ideally suited to the needs of the participating researchers. To promote collaboration within the NFDI, to share knowledge and technology and to provide extensive support for its users have been the guiding principles of the consortium from the beginning and will be at the heart of all workflows and decision-making processes. Thanks to these principles, NFDI4Culture has gathered strong support ranging from individual researchers to highlevel cultural heritage organizations such as the UNESCO, the International Council of Museums, the Open Knowledge Foundation and Wikimedia. On this basis, NFDI4Culture will take innovative measures that promote a cultural change towards a more reflective and sustainable handling of research data and at the same time boost qualification and professionalization in data-driven research in the domain of cultural heritage. This will create a long-lasting impact on science, cultural economy and society as a whole

    Liderazgo, emprendimiento y autogestión: Aportes desde el saber pedagógico para la educación del siglo XXI

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    110 páginas. Libro ElectrónicoEl ejercicio que se plantea en el marco de la línea Liderazgo, emprendimiento y autogestión, se diseñó con el fin de pensar y repensar diversas prácticas pedagógicas que interpelan la escuela. De manera específica, diez propuestas de maestras y maestros inspiradores que, con tiempos, experiencias y objetivos distintos, se han venido pensando lugares del liderazgo y la gestión en la escuela.Primera edició

    Um ano de pandemia: experiência do Serviço de Nutrição e Dietética de um hospital de referência para atendimento de covid-19

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    Introduction: The 2019 coronavirus disease (COVID-19) pandemic brought changes in work organization in all spheres, requiring the restructuring of routines and teams to meet this new demand. The aim of study was to report the experience of the Nutrition and Dietetics Department (NDD) of Hospital de Clínicas de Porto Alegre (HCPA) and the changes that occurred during the first year of the COVID-19 pandemic. Methods: This is an experience report of the performance of HCPA NDD from April 2020 to March 2021. Results: There was an increase in absenteeism in the NDD, requiring processadjustments and relocations. There was also an increase in enteral nutrition delivery due to the severity of the clinical condition of hospitalized patients, a reduction in the capacity of employees’ cafeteria to meet distancing protocols, and a need to use disposable utensils, deliver motivational messages to patients, make adjustmentsto the human milk bank process, and implement changes in nutritional assessment protocols for inpatients and remote outpatient care.  Conclusion: This experience provided the NDD with a great legacy of learning and overcoming by requiring the NDD to adapt while maintaining quality service and strengthening teamwork relationships.Introdução: A pandemia de coronavírus 2019 (COVID-19) trouxe mudanças nas organizações de trabalho em todas as esferas, exigindo a reestruturação das rotinase das equipes para atender essa nova demanda. O objetivo foi relatar a experiência do Serviço de Nutrição e Dietética (SND) do Hospital de Clínicas de Porto Alegre(HCPA) e as mudanças vivenciadas durante o primeiro ano de pandemia de COVID-19.Métodos: Trata-se de um relato de experiência referente à atuação do SND do HCPA de abril de 2020 a março de 2021.Resultados: Houve aumento do absenteísmo no SND, necessitando ajustes de processos e remanejos. Também houve aumento do consumo de dietas enterais pelagravidade da situação clínica dos pacientes internados, a redução da capacidade do refeitório de funcionários para seguir os protocolos de distanciamento, o uso deutensílios descartáveis, mensagens motivacionais aos pacientes, ajustes no processo do banco de leite humano, modificações nos protocolos de avaliação nutricional ao paciente internado e atendimento ambulatorial remoto.Conclusão: Esta experiência proporcionou ao SND um grande legado de aprendizagem e superação, exigindo importantes adaptações, mantendo a qualidade do atendimento e fortalecendo as relações de trabalho em equipe

    Utilizing Targeted Gene Therapy with Nanoparticles Binding Alpha v Beta 3 for Imaging and Treating Choroidal Neovascularization

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    Purpose: The integrin αvβ3 is differentially expressed on neovascular endothelial cells. We investigated whether a novel intravenously injectable αvβ3 integrin-ligand coupled nanoparticle (NP) can target choroidal neovascular membranes (CNV) for imaging and targeted gene therapy. Methods: CNV lesions were induced in rats using laser photocoagulation. The utility of NP for in vivo imaging and gene delivery was evaluated by coupling the NP with a green fluorescing protein plasmid (NP-GFPg). Rhodamine labeling (Rd-NP) was used to localize NP in choroidal flatmounts. Rd-NP-GFPg particles were injected intravenously on weeks 1, 2, or 3. In the treatment arm, rats received NP containing a dominant negative Raf mutant gene (NP-ATPμ-Raf) on days 1, 3, and 5. The change in CNV size and leakage, and TUNEL positive cells were quantified. Results: GFP plasmid expression was seen in vivo up to 3 days after injection of Rd-NP-GFPg. Choroidal flatmounts confirmed the localization of the NP and the expression of GFP plasmid in the CNV. Treating the CNV with NP-ATPμ-Raf decreased the CNV size by 42% (P<0.001). OCT analysis revealed that the reduction of CNV size started on day 5 and reached statistical significance by day 7. Fluorescein angiography grading showed significantly less leakage in the treated CNV (P<0.001). There were significantly more apoptotic (TUNEL-positive) nuclei in the treated CNV. Conclusion: Systemic administration of αvβ3 targeted NP can be used to label the abnormal blood vessels of CNV for imaging. Targeted gene delivery with NP-ATPμ-Raf leads to a reduction in size and leakage of the CNV by induction of apoptosis in the CNV

    Reflections on Endocrinology, 2013–2017

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    miRNA-124 Prevents Rat Diabetic Retinopathy by Inhibiting the Microglial Inflammatory Response

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    Diabetic retinopathy (DR) is characterized by vasoregression and glial activation. miRNA-124 (miR-124) reduces retinal microglial activation and alleviates vasoregression in a neurodegenerative rat model. Our aim was to determine whether miR-124 affects vascular and neural damage in the early diabetic retina. Diabetes was induced in 8-week-old Wistar rats by streptozotocin (STZ) injection. At 16 and 20 weeks, the diabetic rats were intravitreally injected with miR-124 mimic, and retinae were analyzed at 24 weeks. Microvascular damage was identified by evaluating pericyte loss and acellular capillary (AC) formation. M&uuml;ller glial activation was assessed by glial fibrillary acidic protein (GFAP) immunofluorescence staining. Microglial activation was determined by immunofluorescent staining of ionized calcium-binding adaptor molecule 1 (Iba1) in whole mount retinae. The neuroretinal function was assessed by electroretinography. The expression of inflammation-associated genes was evaluated by qRT-PCR. A wound healing assay was performed to quantitate the mobility of microglial cells. The results showed that miR-124 treatment alleviated diabetic vasoregression by reducing AC formation and pericyte loss. miR-124 blunted M&uuml;ller glial- and microglial activation in diabetic retinae and ameliorated neuroretinal function. The retinal expression of inflammatory factors including Tnf-&alpha;, Il-1&beta;, Cd74, Ccl2, Ccl3, Vcam1, Tgf-&beta;1, Arg1, and Il-10 was reduced by miR-124 administration. The elevated mobility of microglia upon high glucose exposure was normalized by miR-124. The expression of the transcription factor PU.1 and lipid raft protein Flot1 was downregulated by miR-124. In rat DR, miR-124 prevents vasoregression and glial activation, improves neuroretinal function, and modulates microglial activation and inflammatory responses

    miRNA-124 Prevents Rat Diabetic Retinopathy by Inhibiting the Microglial Inflammatory Response

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    Diabetic retinopathy (DR) is characterized by vasoregression and glial activation. miRNA-124 (miR-124) reduces retinal microglial activation and alleviates vasoregression in a neurodegenerative rat model. Our aim was to determine whether miR-124 affects vascular and neural damage in the early diabetic retina. Diabetes was induced in 8-week-old Wistar rats by streptozotocin (STZ) injection. At 16 and 20 weeks, the diabetic rats were intravitreally injected with miR-124 mimic, and retinae were analyzed at 24 weeks. Microvascular damage was identified by evaluating pericyte loss and acellular capillary (AC) formation. Müller glial activation was assessed by glial fibrillary acidic protein (GFAP) immunofluorescence staining. Microglial activation was determined by immunofluorescent staining of ionized calcium-binding adaptor molecule 1 (Iba1) in whole mount retinae. The neuroretinal function was assessed by electroretinography. The expression of inflammation-associated genes was evaluated by qRT-PCR. A wound healing assay was performed to quantitate the mobility of microglial cells. The results showed that miR-124 treatment alleviated diabetic vasoregression by reducing AC formation and pericyte loss. miR-124 blunted Müller glial- and microglial activation in diabetic retinae and ameliorated neuroretinal function. The retinal expression of inflammatory factors including Tnf-α, Il-1β, Cd74, Ccl2, Ccl3, Vcam1, Tgf-β1, Arg1, and Il-10 was reduced by miR-124 administration. The elevated mobility of microglia upon high glucose exposure was normalized by miR-124. The expression of the transcription factor PU.1 and lipid raft protein Flot1 was downregulated by miR-124. In rat DR, miR-124 prevents vasoregression and glial activation, improves neuroretinal function, and modulates microglial activation and inflammatory responses

    Protective Effects of Transient Glucose Exposure in Adult C. elegans

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    C. elegans are used to study molecular pathways, linking high glucose levels (HG) to diabetic complications. Persistent exposure of C. elegans to a HG environment induces the mitochondrial formation of reactive oxygen species (ROS) and advanced glycation endproducts (AGEs), leading to neuronal damage and decreased lifespan. Studies suggest that transient high glucose exposure (TGE) exerts different effects than persistent exposure. Thus, the effects of TGE on ROS, AGE-formation and life span were studied in C. elegans. Four-day TGE (400 mM) as compared to controls (0mM) showed a persistent increase of ROS (4-days 286 &plusmn; 40 RLUs vs. control 187 &plusmn; 23 RLUs) without increased formation of AGEs. TGE increased body motility (1-day 0.14 &plusmn; 0.02; 4-days 0.15 &plusmn; 0.01; 6-days 0.16 &plusmn; 0.02 vs. control 0.10 &plusmn; 0.02 in mm/s), and bending angle (1-day 17.7 &plusmn; 1.55; 3-days 18.7 &plusmn; 1.39; 6-days 20.3 &plusmn; 0.61 vs. control 15.3 &plusmn; 1.63 in degree/s) as signs of neuronal damage. Lifespan was increased by 27% (21 &plusmn; 2.4 days) after one-day TGE, 34% (22 &plusmn; 1.2 days) after four-days TGE, and 26% (21 &plusmn; 1.4 days) after six-days TGE vs. control (16 &plusmn; 1.3 days). These experiments suggest that TGE in C. elegans has positive effects on life span and neuronal function, associated with mildly increased ROS-formation. From the perspective of metabolic memory, hormetic effects outweighed the detrimental effects of a HG environment

    Why the clock ticks differently in Parkinson's disease: Insights from motor imagery and resting-state functional magnetic resonance imaging

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    In Parkinson's disease (PD), an impaired perception of suprasecond time intervals has been reported. From a neurobiological perspective, dopamine is thought to be an important mediator of timing. Nevertheless, it is still unclear whether timing deficits in PD occur mainly in the motor context and are associated with corresponding striatocortical loops. This study attempted to fill this gap by investigating time reproduction in the context of a motor imagery task, and its neurobiological correlates in resting-state networks of basal ganglia substructures in PD.Nineteen PD patients and 10 healthy controls therefore underwent two time reproduction tasks. In a motor imagery task, subjects were asked to walk down a corridor for 10 s and reproduce the time spent walking during motor imagery afterwards. In an auditory task, the subjects had to reproduce an acoustically presented time interval of 10 s. Subsequently, resting-state functional magnetic resonance imaging was performed and voxel-wise regressions were conducted between striatal functional connectivity and performance in the individual task at group level and compared between groups.Patients significantly misjudged the time interval in the motor imagery task and an auditory task in comparison to controls. Seed-to-voxel functional connectivity analysis of basal ganglia substructures revealed a significant association between striatocortical connectivity and motor imagery performance. PD patients showed a different pattern of associated striatocortical connections as indicated by significantly different regression slopes for connections of the right putamen and left caudate nucleus.In accordance with previous findings, our data confirm an impaired time reproduction of suprasecond time intervals in PD patients. Our data imply that deficits in time reproduction tasks are not specific to motor context but reflect a general time reproduction deficit. According to our findings, impaired performance in context of motor imagery is accompanied by a different configuration of striatocortical resting-state networks responsible for timing
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