1,024 research outputs found

    A Role of the Bile Salt Receptor FXR in Atherosclerosis

    Get PDF
    This study reviews current insights into the role of bile salts and bile salt receptors on the progression and regression of atherosclerosis. Bile salts have emerged as important modifiers of lipid and energy metabolism. At the molecular level, bile salts regulate lipid and energy homeostasis mainly via the bile salt receptors FXR and TGR5. Activation of FXR has been shown to improve plasma lipid profiles, whereas Fxr(-/-) mice have increased plasma triglyceride and very-low-density lipoprotein levels. Nevertheless, high-density lipoprotein cholesterol levels are increased in these mice, suggesting that FXR has both anti-and proatherosclerotic properties. Interestingly, there is increasing evidence for a role of FXR in "nonclassical" bile salt target tissues, eg, vasculature and macrophages. In these tissues, FXR has been shown to influence vascular tension and regulate the unloading of cholesterol from foam cells, respectively. Recent publications have provided insight into the antiinflammatory properties of FXR in atherosclerosis. Bile salt signaling via TGR5 might regulate energy homeostasis, which could serve as an attractive target to increase energy expenditure and weight loss. Interventions aiming to increase cholesterol turnover (eg, by bile salt sequestration) significantly improve plasma lipid profiles and diminish atherosclerosis in animal models. Bile salt metabolism and bile salt signaling pathways represent attractive therapeutic targets for the treatment of atherosclerosi

    Voederwinning en trekkerkeuze beinvloeden energieverbruik

    Get PDF
    Een juiste afstemming van het vermogen van de trekker op de werkzaamheden beperkt het dieselolieverbruik

    Predictive model for functional consequences of oral cavity tumour

    Get PDF
    The prediction of functional consequences after treatment of large oral cavity tumours is mainly based on the size and location of the tumour. However, patient specific factors play an important role in the functional outcome, making the current predictions unreliable and subjective. An objective prediction is necessary for better patient oriented care, where the choice between surgery or chemo- and radiotherapy could be made according to more reliable measures. In this project, work is being performed to create a tool to obtain this objective prediction. The aim is to develop a virtual biomechanical patient-specific model of the oral cavity for virtual surgery. By adjusting the model, so as to mimic the performed surgery, an accurate preoperative assessment of the postoperative functional consequences can be made for each individual patient

    Model energieverbruik melkveebedrijf

    Get PDF
    In het kader van de milieu- en energiedoelstellingen van de overheid staat het energieverbruik opnieuw in de belangstelling. De belangrijkste onderdelen voor de landbouw zijn het algeheel terugdringen van de CO, uitstoot met 3 tot 5 % en verbetering van de energie-efficiëntie door de agrarische sector met 30 % in 2000 ten opzichte van 1989/90

    Phleborheography: A Correlative Study with Venography

    Get PDF
    The Vascular Laboratory of Henry Ford Hospital has used the Cranley-Grass Phleborheograph (PRG) as the primary noninvasive method to determine the presence or absence of deep venous thrombosis (DVT) in the lower limbs since December 1977. In order to determine its proper role and clinical reliability, we compared the diagnostic accuracy of phleborheography with contrast venography. From December 1977 through December 1978, 483 cases (963 limbs) were successfully examined by PRG. Ofthese, 111 cases (216 limbs) also had contrast venography. The PRG was confirmed as normal in 151 out of 157 (6 false negatives). There were 53 abnormal PRCs, with 35 confirmed by venography and 18 false positives. Six PRCs were considered equivocal. Sensitivity on a per limb basis was .85. The overall specificity was .86, and when equivocal examinations were excluded, it was .89. Phleborheography is safe, reliable, widely applicable, and well-tolerated. However, skilled technicians and careful interpretation are essential to its success

    Energieverbruik bij de ruwvoerteelt en -winning op melkveebedrijven

    Get PDF

    Home-based Physical Activity to Alleviate Fatigue in Cancer Survivors:A Systematic Review and Meta-analysis

    Get PDF
    PURPOSE: Physical activity (PA) affects fatigue and mental health in cancer survivors favorably, but participation in PA interventions tends to be low. More participants may be reached by home-based PA due to greater accessibility and self-monitoring. This systematic review therefore evaluated the effects of home-based PA of low to moderate intensity on symptoms of fatigue, depression, and anxiety among cancer survivors.METHODS: PubMed, CINAHL, PsycINFO, and Web of Science were systematically searched for randomized controlled trials. We included investigations of home-based PA interventions in adults treated curatively for cancer and evaluating fatigue, depression, or anxiety as outcomes. We performed a random-effect meta-analysis for the effects of PA interventions on fatigue in the short and long term. Sub-group analyses were performed for the frequency of counseling. Standardized mean differences (SMD) and 95% confidence intervals are reported.RESULTS: Eleven articles comprising 1066 participants were included: 77% had a history of breast cancer, 14% of ovarian cancer, 4% of colorectal cancer, 4% of prostate cancer and 1% of "other" cancer (not specified). Concerning the outcomes, nine articles reported on fatigue and two reported on depression or anxiety. Meta-analyses showed a significant effect of home-based PA on fatigue immediately post-intervention (SMD = 0.22 [0.06-0.37]), at 3 months' follow-up (SMD = 0.27 [0.04-0.51]), and at 6-9 months' follow-up (SMD = 0.31 [0.08-0.55]). PA interventions that used frequent counseling were associated with larger improvements in fatigue than those using no or infrequent counseling.CONCLUSION: Home-based PA interventions can reduce fatigue among adult cancer survivors for up to 9 months, and frequent counseling may improve the benefits of these interventions.</p

    Quenched QCD at finite density

    Full text link
    Simulations of quenched QCDQCD at relatively small but {\it nonzero} chemical potential μ\mu on 32×16332 \times 16^3 lattices indicate that the nucleon screening mass decreases linearly as μ\mu increases predicting a critical chemical potential of one third the nucleon mass, mN/3m_N/3, by extrapolation. The meson spectrum does not change as μ\mu increases over the same range, from zero to mπ/2m_\pi/2. Past studies of quenched lattice QCD have suggested that there is phase transition at μ=mπ/2\mu = m_\pi/2. We provide alternative explanations for these results, and find a number of technical reasons why standard lattice simulation techniques suffer from greatly enhanced fluctuations and finite size effects for μ\mu ranging from mπ/2m_\pi/2 to mN/3m_N/3. We find evidence for such problems in our simulations, and suggest that they can be surmounted by improved measurement techniques.Comment: 23 pages, Revte
    • …
    corecore