94 research outputs found

    'By teachers for teachers' : innovative, teacher-friendly publishing of practitioner research

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    This is a story – with pictures and hyperlinks, rather like a blog – of how we came to develop some innovative and teacher-friendly ways for teacher-research to be 'published', 'made public', 'communicated', 'publicized' or 'shared', both in oral form and in writing. As we show and tell what we have done, we also explain why

    Immunofluorescence and High-Resolution Microscopy Reveal New Insights in Human Globozoospermia

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    Globozoospermia is a rare and severe type of teratozoospermia characterized by the presence of round-headed, acrosomeless spermatozoa with cytoskeleton defects. Current data support a negative relationship between globozoospermia and intracytoplasmic sperm injection (ICSI) outcomes, revealing the need to perform exhaustive studies on this type of sperm disorder. The aim of this study was to evaluate different structural, functional and molecular sperm biomarkers in total globozoospermia with proper embryo development after ICSI. The combination of field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) allowed us to identify and correlate eight morphological patterns with both types of microscopy. Additionally, results reported a high percentage of coiled forms, with cytoplasmic retentions around the head and midpiece. By fluorescent microscopy, we detected that most of the sperm showed tubulin in the terminal piece of the flagellum and less than 1% displayed tyrosine phosphorylation in the flagellum. Moreover, we did not detect chaperone Heat shock-related 70 kDa protein 2 (HSPA2) in 85% of the cells. Overall, these findings provide new insights into globozoospermia, which could have potential implications in improving sperm selection methods for assisted reproductive techniques.This research was funded by the Human Fertility Professorship and Departamento de Biotecnología of the Universidad de Alicante (VIGROB-186)

    Implementation of the AES strategy in a Regional University: the experience of the PACE Program of La Serena University

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    Avanzar hacia la equidad en el ingreso a la Educación Superior supone un desafío para avanzar en justicia social. En consecuencia, los programas de acompañamiento juegan un rol fundamental para el desarrollo cognitivo, actitudinal – valórico y procedimental, que permiten la inserción efectiva, a fin de lograr las competencias de egreso propuestas en una carrera de pre-grado. Este trabajo pretende presentar el flujo de trabajo utilizado en el Programa de Acompañamiento para la Educación Superior (AES) en el Programa PACE de la Universidad de La Serena, de manera que pueda contribuir a fortalecer la implementación de programas de acompañamiento similar, en alguna (s) de la (s) 31 Instituciones de Educación Superior que ejecutan este Programa en nuestro país, o en su defecto, que estén iniciando un proceso de acompañamiento en alguna Institución de Educación Superior. Una reflexión relevante, es que los programas enfocados en establecer mecanismos de apoyo oportuno a estudiantes que provienen de contextos vulnerables, suponen la entrega de herramientas que promueven la justicia y su propia movilidad social, lo que aumenta las posibilidades de lograr una mejor calidad de vida.Advancing towards equity in the admission to higher education, underlies a challenge to move forward to social justice. As a consequence, transition support programs play a significant role for cognitive, attitudinal, know-how and values development, which allows the effective insertion with the purpose of achieving the graduating competences proposed in an undergraduate degree. This paper, intends to present the work system used in the Accompaniment Program for Higher Education (AHE) within the PACE Program of La Serena University, in a way that may contribute to strengthen the implementation of similar transition support programs, in any of the 31 Institutions of higher education that have implemented this program in Chile, or in any institution which is starting a transition support process. A significant reflection is that programs focused on setting timely supporting mechanisms for students coming from vulnerable contexts involve the delivery of tools that promote justice and their own social mobility, which enhances the possibilities of achieving a better quality of life

    Using coding and non-coding rare variants to target candidate genes in patients with severe tinnitus

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    Tinnitus is the phantom percept of an internal non-verbal set of noises and tones. It is reported by 15% of the population and it is usually associated with hearing and/or brain disorders. The role of structural variants (SVs) in coding and non-coding regions has not been investigated in patients with severe tinnitus. In this study, we performed whole-genome sequencing in 97 unrelated Swedish individuals with chronic tinnitus (TIGER cohort). Rare single nucleotide variants (SNV), large structural variants (LSV), and copy number variations (CNV) were retrieved to perform a gene enrichment analysis in TIGER and in a subgroup of patients with severe tinnitus (SEVTIN, n = 34), according to the tinnitus handicap inventory (THI) scores. An independent exome sequencing dataset of 147 Swedish tinnitus patients was used as a replication cohort (JAGUAR cohort) and population-specific datasets from Sweden (SweGen) and Non-Finish Europeans (NFE) from gnomAD were used as control groups. SEVTIN patients showed a higher prevalence of hyperacusis, hearing loss, and anxiety when they were compared to individuals in the TIGER cohort. We found an enrichment of rare missense variants in 6 and 8 high-constraint genes in SEVTIN and TIGER cohorts, respectively. Of note, an enrichment of missense variants was found in the CACNA1E gene in both SEVTIN and TIGER. We replicated the burden of missense variants in 9 high-constrained genes in the JAGUAR cohort, including the gene NAV2, when data were compared with NFE. Moreover, LSVs in constrained regions overlapping CACNA1E, NAV2, and TMEM132D genes were observed in TIGER and SEVTIN.La Caixa Foundation GNP-182 100010434 LCF/PR/DE18/52010002 H2020-SC1-2019-848261European Commission 848261 722046Svenska Lakaresalskapet SLS-779681 Hoerselforskningsfonden 503 Tysta Skolan and Forschung Fuer LebenAndalusian Goverment (CECEU) DOC_01677Sara Borrell postdoctoral Fellowship (ISCIII) CD20/00153Andalusian Health Government (CSyF 2020 POSTDOC) RH-0150-2020Swedish Research CouncilEuropean Commission 2018-0597

    An active tectonic field for CO2 storage management: the Hontomín onshore case study (Spain)

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    One of the concerns of underground CO2 onshore storage is the triggering of induced seismicity and fault reactivation by the pore pressure increasing. Hence, a comprehensive analysis of the tectonic parameters involved in the storage rock formation is mandatory for safety management operations. Unquestionably, active faults and seal faults depicting the storage bulk are relevant parameters to be considered. However, there is a lack of analysis of the active tectonic strain field affecting these faults during the CO2 storage monitoring. The advantage of reconstructing the tectonic field is the possibility to determine the strain trajectories and describing the fault patterns affecting the reservoir rock. In this work, we adapt a methodology of systematic geostructural analysis to underground CO2 storage, based on the calculation of the strain field from kinematics indicators on the fault planes (ey and ex for the maximum and minimum horizontal shortening, respectively). This methodology is based on a statistical analysis of individual strain tensor solutions obtained from fresh outcrops from the Triassic to the Miocene. Consequently, we have collected 447 fault data in 32 field stations located within a 20 km radius. The understanding of the fault sets’ role for underground fluid circulation can also be established, helping further analysis of CO2 leakage and seepage. We have applied this methodology to Hontomín onshore CO2 storage facilities (central Spain). The geology of the area and the number of high-quality outcrops made this site a good candidate for studying the strain field from kinematics fault analysis. The results indicate a strike-slip tectonic regime with maximum horizontal shortening with a 160 and 50◦ E trend for the local regime, which activates NE–SW strike-slip faults. A regional extensional tectonic field was also recognized with a N–S trend, which activates N–S extensional faults, and NNE–SSW and NNW– SSE strike-slip faults, measured in the Cretaceous limestone on top of the Hontomín facilities. Monitoring these faults within the reservoir is suggested in addition to the possibility of obtaining a focal mechanism solutions for microearthquakes (M < 3)This work has been partially supported by the European Project ENOS: ENabling Onshore CO2 Storage in Europe, H2020 Project ID: 653718 and the Spanish project 3GEO, CGL2017-83931-C3-2-P, MICIU-FEDE

    Insights into the procoagulant profile of patients with systemic lupus erythematosus without antiphospholipid antibodies

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    We aimed to identify the key players in the prothrombotic profile of patients with systemic lupus erythematosus (SLE) not mediated by antiphospholipid antibodies, as well as the potential utility of global coagulation tests to characterize hemostasis in these patients. Patients with SLE without antiphospholipid antibodies and without signs of thrombosis were included. The kinetics of clot formation were determined by ROTEM®. Platelet activation markers were determined by flow cytometry. Thrombin generation associated with Neutrophil Extracellular Traps (NETs) and microparticles (MPs) was measured by calibrated automated thrombogram (CAT). The plasma levels of PAI-1 were also determined. ROTEM® showed a procoagulant profile in SLE patients. SLE patients had activated platelets and more leukocyte/platelet aggregates at basal conditions. The plasma PAI-1 and platelet aggregates correlated with several ROTEM® parameters. The thrombin generation associated withthe tissue factor (TF) content of MPs and with NETs was increased. Our results suggest the utility of global tests for studying hemostasis in SLE patients because they detect their procoagulant profile, despite having had neither antiphospholipid antibodies nor any previous thrombotic event. A global appraisal of hemostasis should, if possible, be incorporated into clinical practice to detect the risk of a thrombotic event in patients with SLE and to consequently act to prevent its occurrenceThis work was supported by grant from the FIS-FONDOS FEDER (PI19/00772, NVB). E.M.M. holds a predoctoral fellowship from Fundación Española de Trombosis y Hemostasia (FETH-SETH

    Unification of Treatments and Interventions for Tinnitus Patients (UNITI): a study protocol for a multi-center randomized clinical trial

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    The UNITI project has received funding from the European Union's Horizon 2020 Research and Innovation Program (grant agreement number 848261).Background: Tinnitus represents a relatively common condition in the global population accompanied by various comorbidities and severe burden in many cases. Nevertheless, there is currently no general treatment or cure, presumable due to the heterogeneity of tinnitus with its wide variety of etiologies and tinnitus phenotypes. Hence, most treatment studies merely demonstrated improvement in a subgroup of tinnitus patients. The majority of studies are characterized by small sample sizes, unstandardized treatments and assessments, or applications of interventions targeting only a single organ level. Combinatory treatment approaches, potentially targeting multiple systems as well as treatment personalization, might provide remedy and enhance treatment responses. The aim of the present study is to systematically examine established tinnitus therapies both alone and in combination in a large sample of tinnitus patients. Further, it wants to provide the basis for personalized treatment approaches by evaluating a specific decision support system developed as part of an EU-funded collaborative project (Unification of treatments and interventions for tinnitus patients; UNITI project). Methods/study design: This is a multi-center parallel-arm randomized clinical trial conducted at five different clinical sites over the EU. The effect of four different tinnitus therapy approaches (sound therapy, structured counseling, hearing aids, cognitive behavioral therapy) applied over a time period of 12 weeks as a single or rather a combinatory treatment in a total number of 500 chronic tinnitus patients will be investigated. Assessments and interventions are harmonized over the involved clinical sites. The primary outcome measure focuses on the domain tinnitus distress assessed via the Tinnitus Handicap Inventory. Discussion: Results and conclusions from the current study might not only provide an essential contribution to combinatory and personalized treatment approaches in tinnitus but could also provide more profound insights in the heterogeneity of tinnitus, representing an important step towards a cure for tinnitus.European Union's Horizon 2020 Research and Innovation Program 84826

    Moral anguish and medical education : thematic review to make a growing problem visible

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    La angustia moral (AM) es un fenómeno descrito en el personal de salud, que poco a poco va ganando interés por estar involucrado en la cotidianidad de la toma de decisiones clínicas. El objetivo del artículo fue estructurar una visión general del concepto. Se realizó una revisión temática con análisis cualitativo del contenido de 40 artículos relacionados con el tema y obtenidos de la base datos Pubmed. Así, se obtuvo que la AM es un fenómeno multicausal del cual no se tiene aún un modelo concreto que permita entenderla e interpretarla, por lo que, a ciencia cierta, no se conoce su frecuencia, su intensidad o el alcance de su impacto. La AM es un fenómeno sin un cuerpo teórico, por lo que se hace necesario diseñar herramientas interdisciplinares que permitan su comprensión y abordaje. Palabras clave: angustia moral; final de vida; cuidados paliativos; educación médica.Moral Distress (MD) is a phenomenon described amongst healthcare personnel, that's been gathering interest little by little due to its involvement in the daily dynamics of clinical decision making. The current work's objective was to structure an overview of the MD concept. A narrative review was made with a qualitative analysis of 40 article's content related with the topic and obtained from the PubMed database. MD is a polycausal phenomenon that still lacks a concrete model with which to understand and interpret it which is why its frequency, intensity or the scope of its impact is unknown. MD is a phenomenon that lacks a complete theoretical background that would allow us to understand it fully, which is why it's necessary to design interdisciplinary tools that'd allow a full comprehension and approach. Keywords moral distress; palliative care; end of life; education; medical; undergraduate.https://orcid.org/0000-0002-9132-0557https://scholar.google.com/citations?user=SH-SFzMAAAAJ&hl=eshttps://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000274801&lang=esRevista Nacional - Indexad

    Boosting mitochondria activity by silencing MCJ overcomes cholestasis-induced liver injury

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    Background & Aims: Mitochondria are the major organelles for the formation of reactive oxygen species (ROS) in the cell, and mitochondrial dysfunction has been described as a key factor in the pathogenesis of cholestatic liver disease. The methylation-controlled J-protein (MCJ) is a mitochondrial protein that interacts with and represses the function of complex I of the electron transport chain. The relevance of MCJ in the pathology of cholestasis has not yet been explored. Methods: We studied the relationship between MCJ and cholestasis-induced liver injury in liver biopsies from patients with chronic cholestatic liver diseases, and in livers and primary hepatocytes obtained from WT and MCJ-KO mice. Bile duct ligation (BDL) was used as an animal model of cholestasis, and primary hepatocytes were treated with toxic doses of bile acids. We evaluated the effect of MCJ silencing for the treatment of cholestasis-induced liver injury. Results: Elevated levels of MCJ were detected in the liver tissue of patients with chronic cholestatic liver disease when compared with normal liver tissue. Likewise, in mouse models, the hepatic levels of MCJ were increased. After BDL, MCJ-KO animals showed significantly decreased inflammation and apoptosis. In an in vitro model of bile-acid induced toxicity, we observed that the loss of MCJ protected mouse primary hepatocytes from bile acid-induced mitochondrial ROS over-production and ATP depletion, enabling higher cell viability. Finally, the in vivo inhibition of the MCJ expression, following BDL, showed reduced liver injury and a mitigation of the main cholestatic characteristics. Conclusions: We demonstrated that MCJ is involved in the progression of cholestatic liver injury, and our results identified MCJ as a potential therapeutic target to mitigate the liver injury caused by cholestasis. Lay summary: In this study, we examine the effect of mitochondrial respiratory chain inhibition by MCJ on bile acid-induced liver toxicity. The loss of MCJ protects hepatocytes against apoptosis, mitochondrial ROS overproduction, and ATP depletion as a result of bile acid toxicity. Our results identify MCJ as a potential therapeutic target to mitigate liver injury in cholestatic liver diseases.Acknowledgements: We thank MINECO for the Severo Ochoa Excellence Accreditation of CIC bioGUNE [SEV-2016-0644]

    Vaccination adjuvated against hepatitis B in Spanish National Healthcare System (SNS) workers typed as non-responders to conventional vaccines

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    [EN] Trial Design: An interventional, phase 4, single group assignment, without masking (open label), preventive clinical trial was carried out in health workers with biological risk in their tasks, who have been filed as non-responders to conventional vaccination against Hepatitis B. Methods: 67 health workers with biological risk in their tasks, who have been filed as non-responders to conventional vaccination against Hepatitis B, were enrolled in the Clinical Trial. All participants were from 18 years up to 64 years old. Inclusion Criteria: NHS workers -including university students doing their internships in health centres dependent on the National Health System (inclusion of students is regulated and limited by specific instructions on labour prevention in each autonomous community)- classified as non-responders. The criteria defining them as non-responders to the conventional hepatitis B vaccine is anti HBsAb titers < 10 mUI/ml following the application of six doses of conventional vaccine at 20 lg doses (two complete guidelines). The objective of this study was to provide Health workersstaff with an additional protection tool against hepatitis B infection, and to evaluate the efficacy of the adjuvanted vaccine in healthy non-responders to conventional hepatitis B vaccine. The primary outcome was the measurement of antibody antiHBs before the first Fendrix dose and a month after the administration of each dose. Other outcome was collection of adverse effects during administration and all those that could be related to the vaccine and that occur within 30 days after each dose. In this study, only one group was assigned. There was no randomization or masking. Results: The participants were recruited between April 13, 2018 and October 31, 2019. 67 participants were enrolled in the Clinical Trial and included the analyses. The primary immunisation consists of 4 separate 0.5 ml doses of Fendrix , administered at the following schedule: 1 month, 2 months and 6 months from the date of the first dose. Once the positivity was reached in any of the doses, the participant finished the study and was not given the following doses. 68.66% (46 out 67) had a positive response to first dose of Fendrix. 57.14% (12 out 21) had a positive response to second dose of Fendrix . 22.22% (2 out 9) had a positive response to third dose of Fendrix and 42.96% (3 out 7) had a positive response to last dose of Fendrix. Overall, 94.02% (64 out 67) of participants had a positive response to Fendrix . No serious adverse event occurred. Conclusions: The use of Fendrix , is a viable vaccine alternative for NHS workers classified as ‘‘nonresponders”. Revaccination of healthy non-responders with Fendrix, resulted in very high proportions of responders without adverse events. Trial registration: The trial was registered in the Spanish National Trial Register (REEC), ClinicalTrials.gov and inclusion has been stopped (identifier NCT03410953; EudraCT-number 2016-004991-23). Funding: GRS 1360/A/16: Call for aid for the financing of research projects in biomedicine, health management and socio-health care to be developed in the centres of the Regional Health Management of Autonomous Community of Castile-Leon. In addition, this work has been supported by the Spanish Platform for Clinical Research and Clinical Trials, SCReN (Spanish Clinical Research Network), funded by the Subdirectorate General for Research Evaluation and Promotion of the Carlos III Health Institute (ISCIII), through the project PT13/0002/0039 and project PT17/0017/0023 integrated in the State Plan for R&D&I 2013–2016 and co-financed by and the European Regional Development Fund (ERDF)
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