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- Billecke, N, et al.
(författare)
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Perilipin 5 mediated lipid droplet remodelling revealed by coherent Raman imaging
- 2015
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Ingår i: Integrative biology : quantitative biosciences from nano to macro. - : Oxford University Press (OUP). - 1757-9708. ; 7:4, s. 467-476
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Tidskriftsartikel (refereegranskat)abstract
- Quantitative, label-free coherent Raman microscopy was used to show lipid droplet compositional differences in muscle upon plin5 overexpressionin vivoandin vitro.
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- D'Orangeville, Loic, et al.
(författare)
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Drought timing and local climate determine the sensitivity of eastern temperate forests to drought
- 2018
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Ingår i: Global Change Biology. - : Wiley. - 1354-1013 .- 1365-2486. ; 24:6, s. 2339-2351
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Tidskriftsartikel (refereegranskat)abstract
- Projected changes in temperature and drought regime are likely to reduce carbon (C) storage in forests, thereby amplifying rates of climate change. While such reductions are often presumed to be greatest in semi-arid forests that experience widespread tree mortality, the consequences of drought may also be important in temperate mesic forests of Eastern North America (ENA) if tree growth is significantly curtailed by drought. Investigations of the environmental conditions that determine drought sensitivity are critically needed to accurately predict ecosystem feedbacks to climate change. We matched site factors with the growth responses to drought of 10,753 trees across mesic forests of ENA, representing 24 species and 346 stands, to determine the broad-scale drivers of drought sensitivity for the dominant trees in ENA. Here we show that two factors-the timing of drought, and the atmospheric demand for water (i.e., local potential evapotranspiration; PET)-are stronger drivers of drought sensitivity than soil and stand characteristics. Droughtinduced reductions in tree growth were greatest when the droughts occurred during early-season peaks in radial growth, especially for trees growing in the warmest, driest regions (i.e., highest PET). Further, mean species trait values (rooting depth and psi(50)) were poor predictors of drought sensitivity, as intraspecific variation in sensitivity was equal to or greater than interspecific variation in 17 of 24 species. From a general circulation model ensemble, we find that future increases in earlyseason PET may exacerbate these effects, and potentially offset gains in C uptake and storage in ENA owing to other global change factors.
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- Mortzell, Monica, et al.
(författare)
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Thrombotic microangiopathy
- 2011
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Ingår i: Transfusion and apheresis science. - Oxford : Elsevier. - 1473-0502 .- 1878-1683. ; 45:2, s. 119-123
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Tidskriftsartikel (refereegranskat)abstract
- Thrombotic microangiopathy (TMA) is a histopathological feature of various diseases including thrombotic thrombocytopenic purpura (UP) and hemolytic uremic syndrome (HUS). There are many secondary causes of TMA, many of them could mimic TTP or HUS. This article presents a short overview on TMA. In conclusion TMA is the result of various etiology reasons and pathologic reactions with various clinical entities. It is important to focus on a thorough history including family history when deciding on a diagnosis. Analysis of ADAMTS 13 and ADAMTS 13-antibodies may help to decide continued therapy.
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| 29. |
- Mörtzell, Monica, et al.
(författare)
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Analyses of data of patients with Thrombotic Microangiopathy in the WAA registry
- 2011
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Ingår i: Transfusion and apheresis science. - : Elsevier. - 1473-0502 .- 1878-1683. ; 45:2, s. 125-131
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Tidskriftsartikel (refereegranskat)abstract
- Thrombotic Microangiopathy (TMA) is a histopathological feature of various diseases including thrombotic thrombocytopenic purpura and hemolytic uremic syndrome. less thanbrgreater than less thanbrgreater thanThe aim of this study was to investigate the outcome and prognostic variables of TMA-patients. less thanbrgreater than less thanbrgreater thanMaterials and methods: Data were consecutively retrieved from the WAA-apheresis registry (www.waa-registry.org) during 2003-2009. Included were all 120 patients (1237 procedures) who suffered from various forms of TMA, as registered by the ICD-10 code M31.1. Besides registry data, more extensive information was retrieved from the latest 64 patients. Adverse events of the TMA patients were compared to those of the other patients in the registry. less thanbrgreater than less thanbrgreater thanResults: The mean age was 46 years (range 11-85 years, 57% women). In 72% therapeutic apheresis was due to an acute indication while a long-term indication was present in 28%. Plasma exchange was performed by centrifugation and filtration technique (95% and 4%, respectively), and immunoadsorption in 1% of the patients. Only fresh frozen plasma was used as replacement fluid in 69% of procedures. Adverse events were more frequent than in the general apheresis population (10% versus 5%, RR 1.9, CI 1.6-2.3). No death occurred due to apheresis treatment. Three percent of the procedures were interrupted. Bronchospasm and/or anaphylactic shock were present in two patients and one patient suffered from TRALI. At admission 26% were bedridden and needed to be fed. The risk of dying during the treatment period was significantly higher if the patient also suffered from a compromising disease, such as cancer. There was an inverse correlation between the ADAMTS13 level and the antibody titer (r = -0.47, p = 0.034). less thanbrgreater than less thanbrgreater thanConclusions: Patients with TMA have an increased risk for moderate and severe AE compared to the general apheresis population. Many patients were severely ill at admission. The prognosis is worse if the patient also has a severe chronic disease. Even slightly increased ADAMTS13-antibody titers seem to have a negative impact on the ADAMTS13 levels. (C) 2011 Elsevier Ltd. All rights reserved.
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- Pialoux, V., et al.
(författare)
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Effects of exercise and training in hypoxia on antioxidant/pro-oxidant balance
- 2006
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Ingår i: European Journal of Clinical Nutrition. - London, United Kingdom : Nature Publishing Group. - 0954-3007 .- 1476-5640. ; 60:12, s. 1345-54
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The aim was to investigate the effects of acute exercise under hypoxic condition and the repetition of such exercise in a 'living low-training high' training on the antioxidant/prooxidant balance.Design: Randomized, repeated measures design.Setting: Faculté de Médecine, Clermont-Ferrand, France.Subjects: Fourteen runners were randomly divided into two groups. A 6-week endurance training protocol integrated two running sessions per week at the second ventilatory threshold into the usual training.Intervention: A 6-week endurance training protocol integrated two running sessions per week at the second ventilatory threshold into the usual training. The first hypoxic group (HG, n=8) carried out these sessions under hypoxia (3000 m simulated altitude) and the second normoxic group (NG, n=6) in normoxia. In control period, the runners were submitted to two incremental cycling tests performed in normoxia and under hypoxia (simulated altitude of 3000 m). Plasma levels of advanced oxidation protein products (AOPP), malondialdehydes (MDA) and lipid oxidizability, ferric-reducing antioxidant power (FRAP), lipid-soluble antioxidants (alpha-tocopherol and beta-carotene) normalized for triacyglycerols and cholesterol were measured before and after the two incremental tests and at rest before and after training.Results: No significant changes of MDA and AOPP level were observed after normoxic exercise, whereas hypoxic exercise induced a 56% rise of MDA and a 44% rise of AOPP. Plasma level of MDA and arterial oxygen hemoglobin desaturations after the acute both exercises were highly correlated (r=0.73). alpha-Tocopherol normalized for cholesterol and triacyglycerols increased only after hypoxic exercise (10-12%, P<0.01). After training, FRAP resting values (-21%, P<0.05) and alpha-tocopherol/triacyglycerols ratio (-24%, P<0.05) were diminished for HG, whereas NG values remained unchanged.Conclusions: Intense exercise and hypoxia exposure may have a cumulative effect on oxidative stress. As a consequence, the repetition of such exercise characterizing the 'living low-training high' model has weakened the antioxidant capacities of the athletes.Sponsorship: International Olympic Committee and the Direction Régionale de la Jeunesse et des Sports de la Région Auvergne.
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| 31. |
- Rock, Sebastian L., et al.
(författare)
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Effects of parasitic freshwater mussels on their host fishes : a review
- 2022
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Ingår i: Parasitology. - : Cambridge University Press. - 0031-1820 .- 1469-8161. ; 149:14, s. 1958-1975
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Tidskriftsartikel (refereegranskat)abstract
- Freshwater mussels in the order Unionida are highly adapted to parasitize fish for the primary purpose of dispersal. The parasitic larval stage affixes itself to the gills or fins of the host where it becomes encysted in the tissue, eventually excysting to develop into a free-living adult. Research on the parasitic interactions between unionids and their host fishes has garnered attention recently due to the increase in worldwide preservation efforts surrounding this highly endangered and ecologically significant order. With the exception of heavy infestation events, these mussels cause minor effects to their hosts, typically only observable effect in combination with other stressors. Moreover, the range of effect intensities on the host varies greatly with the species involved in the interaction, an effect that may arise from different evolutionary strategies between long- and short-infesting mussels; a distinction not typically made in conservation practices. Lower growth and reduced osmotic potential in infested hosts are commonly observed and correlated to infestation load. These effects are typically also associated with increases in metabolic rate and behaviour indicative of stress. Host fish seem to compensate for this through a combination of rapid wound healing in the parasitized areas and higher ventilation rates. The findings are heavily biased towards Margaritifera margaritifera, a unique mussel not well suited for cross-species generalizations. Furthermore, the small body of molecular and genetic studies should be expanded as many conclusions are drawn from studies on the ultimate effects of glochidiosis rather than proximate studies on the underlying mechanisms.
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- Stegmayr, Bernd, et al.
(författare)
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World apheresis registry
- 2005
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Ingår i: Journal of clinical apheresis. - New York : Allen R. Liss. - 0733-2459 .- 1098-1101. ; 20:2, s. 126-127
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Tidskriftsartikel (refereegranskat)
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