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Sökning: WFRF:(Freichel M)

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  • Klepac, K., et al. (författare)
  • The G(q) signalling pathway inhibits brown and beige adipose tissue
  • 2016
  • Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 7
  • Tidskriftsartikel (refereegranskat)abstract
    • Brown adipose tissue (BAT) dissipates nutritional energy as heat via the uncoupling protein-1 (UCP1) and BAT activity correlates with leanness in human adults. Here we profile G protein-coupled receptors (GPCRs) in brown adipocytes to identify druggable regulators of BAT. Twenty-one per cent of the GPCRs link to the G(q) family, and inhibition of G(q) signalling enhances differentiation of human and murine brown adipocytes. In contrast, activation of G(q) signalling abrogates brown adipogenesis. We further identify the endothelin/Ednra pathway as an autocrine activator of G(q) signalling in brown adipocytes. Expression of a constitutively active G(q) protein in mice reduces UCP1 expression in BAT, whole-body energy expenditure and the number of brown-like/beige cells in white adipose tissue (WAT). Furthermore, expression of G(q) in human WAT inversely correlates with UCP1 expression. Thus, our data indicate that G(q) signalling regulates brown/beige adipocytes and inhibition of G(q) signalling may be a novel therapeutic approach to combat obesity.
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3.
  • Ruggeri, Kai, et al. (författare)
  • The globalizability of temporal discounting
  • 2022
  • Ingår i: Nature Human Behaviour. - : Springer Nature. - 2397-3374. ; 6:10, s. 1386-1397
  • Tidskriftsartikel (refereegranskat)abstract
    • Economic inequality is associated with preferences for smaller, immediate gains over larger, delayed ones. Such temporal discounting may feed into rising global inequality, yet it is unclear whether it is a function of choice preferences or norms, or rather the absence of sufficient resources for immediate needs. It is also not clear whether these reflect true differences in choice patterns between income groups. We tested temporal discounting and five intertemporal choice anomalies using local currencies and value standards in 61 countries (N = 13,629). Across a diverse sample, we found consistent, robust rates of choice anomalies. Lower-income groups were not significantly different, but economic inequality and broader financial circumstances were clearly correlated with population choice patterns. Ruggeri et al. find in a study of 61 countries that temporal discounting patterns are globally generalizable. Worse financial environments, greater inequality and high inflation are associated with extreme or inconsistent long-term decisions.
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