437 resultados para hep


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Es gehört zum allgemeinen Bildungsauftrag, Kinder und Jugendliche beim Erwerb sozialer Kompetenz zu unterstützen. Dem Sportunterricht wird hohes sozialerzieherisches Potenzial attestiert, seine Wirksamkeit bezüglich der Förderung sozialer Kompetenz ist allerdings kaum untersucht. Bislang liegen keine Befunde und Empfehlungen vor. Hier knüpft der vierte Band der Reihe «Beiträge für die Praxis» an. Der Autor zeigt, wie soziales Lernen im Sportunterricht gezielt inszeniert werden kann, und erklärt ausserdem, weshalb Sportunterricht nicht per se eine positive Wirkung auf den Aufbau sozialer Kompetenz hat.

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With no approved pharmacological treatment, non-alcoholic fatty liver disease (NAFLD) is now the most common cause of chronic liver disease in western countries and its worldwide prevalence continues to increase along with the growing obesity epidemic. Here we show that a high-fat high-sucrose (HFHS) diet, eliciting chronic hepatosteatosis resembling human fatty liver, lowers hepatic NAD(+) levels driving reductions in hepatic mitochondrial content, function and ATP levels, in conjunction with robust increases in hepatic weight, lipid content and peroxidation in C57BL/6J mice. In an effort to assess the effect of NAD(+) repletion on the development of steatosis in mice, nicotinamide riboside (NR), a precursor for NAD(+) biosynthesis, was given to mice concomitant, as preventive strategy (NR-Prev), and as a therapeutic intervention (NR-Ther), to a HFHS diet. We demonstrate that NR prevents and reverts NAFLD by inducing a SIRT1- and SIRT3-dependent mitochondrial unfolded protein response (UPR(mt) ), triggering an adaptive mitohormetic pathway to increase hepatic β-oxidation and mitochondrial complex content and activity. The cell-autonomous beneficial component of NR treatment was revealed in liver-specific Sirt1 KO mice (Sirt1(hep-/-) ), while Apolipoprotein E-deficient (Apoe(-/-) ) mice challenged with a high-fat high-cholesterol diet (HFC), affirmed the use of NR in other independent models of NAFLD. CONCLUSION Our data warrant the future evaluation of NAD(+) boosting strategies to manage the development or progression of NAFLD. This article is protected by copyright. All rights reserved.