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Université de Fribourg

How dieting might make some fatter: modeling weight cycling toward obesity from a perspective of body composition autoregulation

Jacquet, Philippe ; Schutz, Yves ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: International Journal of Obesity, 2020, vol. 44, p. 1243-1253

The notion that dieting makes some people fatter has in the past decade gained considerable interest from both epidemiological predictions and biological plausibility. Several large-scale prospective studies have suggested that dieting to lose weight is associated with future weight gain and obesity, with such predictions being stronger and more consistent among dieters who are in the normal...

Université de Fribourg

Internal lamellar and inverse hexagonal liquid crystalline phases during the digestion of krill and astaxanthin oil-in-water emulsions

Yaghmur, Anan ; Lotfi, Saleh ; Ariabod, Sarah Atoussa ; Bor, Gizem ; Gontsarik, Mark ; Salentinig, Stefan

In: Frontiers in Bioengineering and Biotechnology, 2019, vol. 7, p. -

Krill oil represents an important alternative natural source of omega-3 (ω-3) polyunsaturated fatty acids (PUFAs). Considering the beneficial health effects of these essential fatty acids, particularly in various disorders including cancer, cardiovascular, and inflammation diseases, it is of paramount importance to gain insight into the digestibility of krill oil. In this work, we study the...

Université de Fribourg

Low 24-hour core body temperature as a thrifty metabolic trait driving catch-up fat during weight regain after caloric restriction

Calonne, Julie ; Arsenijevic, Denis ; Scerri, Isabelle ; Miles-Chan, Jennifer L. ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: American Journal of Physiology-Endocrinology and Metabolism, 2019, vol. 317, no. 4, p. E699–E709

The recovery of body weight after substantial weight loss or growth retardation is often characterized by a disproportionately higher rate of fat mass vs. lean mass recovery, with this phenomenon of “preferential catch-up fat” being contributed by energy conservation (thrifty) metabolism. To test the hypothesis that a low core body temperature (Tc) constitutes a thrifty metabolic trait...

Université de Fribourg

A clinal polymorphism in the insulin signaling transcription factor foxo contributes to life-history adaptation in Drosophila*

Durmaz, Esra ; Rajpurohit, Subhash ; Betancourt, Nicolas ; Fabian, Daniel K. ; Kapun, Martin ; Schmidt, Paul ; Flatt, Thomas

In: Evolution, 2019, vol. 73, no. 9, p. 1774–1792

A fundamental aim of adaptation genomics is to identify polymorphisms that underpin variation in fitness traits. In Drosophila melanogaster, latitudinal life‐history clines exist on multiple continents and make an excellent system for dissecting the genetics of adaptation. We have previously identified numerous clinal single‐nucleotide polymorphism in insulin/insulin‐like growth factor...