279 research outputs found

    Bioavailability of Dietary Omega-3 Fatty Acids Added to a Variety of Sausages in Healthy Individuals

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    A low Omega-3 Index (eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in erythrocytes) is associated with cardiac, cerebral, and other health issues. Intake of EPA and DHA, but not of alpha-linolenic acid (ALA), increases the Omega-3 Index. We investigated bioavailability, safety, palatability and tolerability of EPA and DHA in a novel source: a variety of sausages. We screened 96 healthy volunteers, and recruited 44 with an Omega-3 Index <5%. Participants were randomly assigned to receive a variety of sausages enriched with approximately 250 mg EPA and DHA per 80 g (n = 22) daily for 8 weeks, or matching placebo sausages (n = 22). All sausages contained approximately 250 mg ALA/80 g. In the verum group, the mean Omega-3 Index increased from 4.18 +/- 0.54 to 5.72 +/- 0.66% (p < 0.001), while it remained unchanged in the placebo group. While ALA levels increased only in the placebo group, DPA levels increased in both groups. Inter-individual variability in the response was large. The mean increase of the Omega-3 Index per intake of EPA and DHA we observed was higher than for other sources previously studied, indicating superior bioavailability. As increasing production of EPA and DHA is difficult, improvements of bioavailability can facilitate reaching the target range for the Omega-3 Index (8-11%)

    Distribution and habitat suitability of Ross seals in a warming ocean

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    Understanding the determinants of poorly studied species’ spatial ecology is fundamental to understanding climate change impacts on those species and how to effectively prioritise their conservation. Ross seals (Ommatophoca rossii) are the least studied of the Antarctic pinnipeds with a limited knowledge of their spatial ecology. We present the largest tracking study for this species to date, create the first habitat models, and discuss the potential impacts of climate change on their preferred habitat and the implications for conservation. We combined newly collected satellite tracking data (2016–2019: n = 11) with previously published data (2001: n = 8) from the Weddell, King Haakon VII and Lazarev seas, Antarctica, and used 16 remotely sensed environmental variables to model Ross seal habitat suitability by means of boosted regression trees for summer and winter, respectively. Five of the top environmental predictors were relevant in both summer and winter (sea-surface temperature, distance to the ice edge, ice concentration standard deviation, mixed-layer depth, and sea-surface height anomalies). Ross seals preferred to forage in waters ranging between -1 and 2°C, where the mixed-layer depth was shallower in summer and deeper in winter, where current speeds were slower, and away from the ice edge in the open ocean. Receding ice edge and shoaling of the mixed layer induced by climate change may reduce swimming distances and diving depths, thereby reducing foraging costs. However, predicted increased current speeds and sea-surface temperatures may reduce habitat suitability in these regions. We suggest that the response of Ross seals to climate change will be regionally specific, their future success will ultimately depend on how their prey responds to regional climate effects and their own behavioural plasticity

    A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean

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    The development of models of marine ecosystems in the Southern Ocean is becoming increasingly important as a means of understanding and managing impacts such as exploitation and climate change. Collating data from disparate sources, and understanding biases or uncertainties inherent in those data, are important first steps for improving ecosystem models. This review focuses on seals that breed in ice habitats of the Southern Ocean (i.e. crabeater seal, Lobodon carcinophaga; Ross seal, Ommatophoca rossii; leopard seal, Hydrurga leptonyx; and Weddell seal, Leptonychotes weddellii). Data on populations (abundance and trends in abundance), distribution and habitat use (movement, key habitat and environmental features) and foraging (diet) are summarised, and potential biases and uncertainties inherent in those data are identified and discussed. Spatial and temporal gaps in knowledge of the populations, habitats and diet of each species are also identified

    Å styre i spenningsfelt

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    Masteroppgave i bedriftsledelse (MBA) - Universitetet i Nordland, 201

    Movt váidudandivššu guvllolaš gealbobálvalus leamaš ávkin Davvi-Norggas

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    Source at https://omsorg.portfolio.no/.Mer enn 20 år tilbake, hadde vi en ung mann med alvorlig kreftsykdom og spredning til høyre lår. Han hadde forsøkt mange behandlinger med kun kortvarig effekt. Sykdommen ga han en rekke plager som smerter, gang- vansker og store ulcerasjoner som var en ekstra utfordring pleiemessig. Pasienten var gift, han var småbarnsfar og egentlig fra et annet sted i landet, men bodde nå på finnmarkskysten, 4 timers kjøring til nærmeste sykehus. På spørsmål om hvor han skulle være isluttfasen av sitt liv, var det ingen tvil om at han skulle hjem til sine. Der var hjemmetjenesten forberedt på å ta imot han. Fastlege hadde de ikke for tiden, men legevikarer som kom og dro. Da vi noen år senere hadde undervisning i regi av «Lindring i nord» (LIN) i en av nabokommunene, måtte jeg høre med en av sykepleierne fra hans kommune hvordan slutten ble. Hun fortalte at det faktisk hadde gått rimelig greit, alt tatt i betraktning. Han fikk være hjemme og alle stilte opp. Det ble så bra det kunne bli. (Anonymisert) Denne historien viser at god palliasjon i mindre distriktskommuner langt fra sykehus er mulig, men det krever kompetanse, engasjement, samarbeid og kunnskap om hvor man kan få hjelp ved behov

    The Practically Wise Medical Teacher: Medical Education at the University of Tromsø – A Norwegian Case

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    Source at https://www.hsj.gr/.This article addresses the issue of teaching quality in medical education and investigates what characterizes a professionally competent or practically wise medical teacher through the use of longitudinal data from interviews with 40 medical students. In discussing the findings, Aristotle’s concepts of episteme, techne and phronesis, and theoretical perspectives on professionalism and quality in teaching are applied. The findings highlight that one is either a practically wise medical teacher or a technical medical teacher. The practically wise medical teacher typically focuses on reflection, experience, participation, formative assessment and discussion in an atmosphere of good relations, which stimulate teaching and learning. The technical medical teacher, on the contrary, knows very little about the students and treats them as onlookers in clinical settings. The analysis results indicate that being a practically wise medical teacher requires a perception of what characterizes professionalism in medical education, the ability to use formative assessment and role model consciousness. These findings underline the importance of a good supervisor–learner relationship, which promotes medical teachers’ teaching competence and knowledge of professionalism. The findings also indicate the importance of faculty development in order to improve teaching quality at both the individual and system levels

    Environmental drivers of population-level variation in the migratory and diving ontogeny of an Arctic top predator

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    This work is an output of the ARISE project (NE/P006035/1 and NE/P00623X/1), part of the Changing Arctic Ocean programme jointly funded by the UKRI Natural Environment Research Council (NERC) and the German Federal Ministry of Education and Research (BMBF). Fieldwork in Canada was carried out under a Canadian Council on Animal Care permit no. NAFC2017–2 and funded by Fisheries and Oceans Canada and a bursary from Department for Business, Energy and Industrial Strategy (BEIS) administered by the NERC Arctic Office. Fieldwork in the Greenland Sea was approved by the Greenland Ministry of Fisheries, Hunting and Agriculture and the Norwegian Food Safety Authority (permit no. 11546) as part of the Northeast Greenland Environmental Study Program 2017–2018 (by the Danish Centre for Environment and Energy at Aarhus University, The Greenland Institute of Natural Resources and the Environmental Agency for Mineral Resource Activities of the Government of Greenland) and financed by oil licence holders in the area.The development of migratory strategies that enable juveniles to survive to sexual maturity is critical for species that exploit seasonal niches. For animals that forage via breath-hold diving, this requires a combination of both physiological and foraging skill development. Here, we assess how migratory and dive behaviour develop over the first year of life for a migratory Arctic top predator, the harp seal Pagophilus groenlandicus, tracked using animal-borne satellite relay data loggers. We reveal similarities in migratory movements and differences in diving behaviour between 38 juveniles tracked from the Greenland Sea and Northwest Atlantic breeding populations. In both regions, periods of resident and transitory behaviour during migration were associated with proxies for food availability: sea ice concentration and bathymetric depth. However, while ontogenetic development of dive behaviour was similar for both populations of juveniles over the first 25 days, after this time Greenland Sea animals performed shorter and shallower dives and were more closely associated with sea ice than Northwest Atlantic animals. Together, these results highlight the role of both intrinsic and extrinsic factors in shaping early life behaviour. Variation in the environmental conditions experienced during early life may shape how different populations respond to the rapid changes occurring in the Arctic ocean ecosystem.Publisher PDFPeer reviewe

    Raised Serum Markers of T Cell Activation and Exhaustion in Granulomatous-Lymphocytic Interstitial Lung Disease in Common Variable Immunodeficiency

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    Purpose About 20–30% of patients with common variable immunodefciency (CVID) develop granulomatous-lymphocytic interstitial lung disease (GLILD) as one of several non-infectious complications to their immunodefciency. The purpose of this study was to identify biomarkers that could distinguish GLILD from other non-infectious complications in CVID. Methods We analyzed serum biomarkers related to infammation, pulmonary epithelium injury, fbrogenesis, and extracellular matrix (ECM) remodeling, and compared three subgroups of CVID: GLILD patients (n=16), patients with other non-infectious complications (n=37), and patients with infections only (n=20). Results We found that GLILD patients had higher levels of sCD25, sTIM-3, IFN-γ, and TNF, refecting T cell activation and exhaustion, compared to both CVID patients with other infammatory complications and CVID with infections only. GLILD patients also had higher levels of SP-D and CC16, proteins related to pulmonary epithelium injury, as well as the ECM remodeling marker MMP-7, than patients with other non-infectious complications. Conclusion GLILD patients have elevated serum markers of T cell activation and exhaustion, pulmonary epithelium injury, and ECM remodeling, pointing to potentially important pathways in GLILD pathogenesis, novel targets for therapy, and promising biomarkers for clinical evaluation of these patients

    Linking Behavior to Vital Rates to Measure the Effects of Non-Lethal Disturbance on Wildlife

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    Acknowledgments Funding was received from the University of Aberdeen,Graduate School Competitive Studentship grant scheme and the Marine Alliance for Science and Technology for Scotland pooling initiative. We are grateful for the constructive comments provided by Dr Amanda Lombard and two anonymous reviewersPeer reviewedPublisher PD
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