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Université de Fribourg

Weight cycling during growth and beyond as a risk factor for later cardiovascular diseases: the 'repeated overshoot' theory

Montani, Jean-Pierre ; Viecelli, A. K. ; Prévot, Anne ; Dulloo, Abdul G.

In: International Journal of Obesity, 2006, vol. 30, no. S4, p. S58–S66

In people trying to lose weight, there are often repeated cycles of weight loss and regain. Weight cycling is, however, not limited to obese adults but affects people of normal weight, particularly young women, who are unhappy with their appearance. Furthermore, the onset of a pattern of weight cycling is shifting towards younger ages, owing to the increasing prevalence of overweight and obesity...

Université de Fribourg

Water-induced thermogenesis reconsidered: the effects of osmolality and water temperature on energy expenditure after drinking

Brown, Clive M. ; Dulloo, Abdul G. ; Montani, Jean-Pierre

In: Journal of Clinical Endocrinology and Metabolism, 2006, vol. 91, no. 9, p. 3598-3602

Context: A recent study reported that drinking 500 ml of water causes a 30% increase in metabolic rate. If verified, this previously unrecognized thermogenic property of water would have important implications for weight-loss programs. However, the concept of a thermogenic effect of water is controversial because other studies have found that water drinking does not increase energy...

Université de Fribourg

Uninephrectomy-induced lipolysis and low-grade inflammation are mimicked by unilateral renal denervation

Arsenijevic, Denis ; Cajot, Jean-François ; Fellay, Benoit ; Dulloo, Abdul G. ; Vliet, Bruce N. Van ; Montani, Jean-Pierre

In: Integrative Physiology, 2016, p. 227

Uninephrectomy (UniNX) in rats on a fixed food intake leads to increased lipolysis and a low-grade inflammation with an increased subset of circulating cytokines. Because UniNX ablates renal nerves on the side of the removed kidney, we tested the contribution of unilateral renal denervation in the phenotype of UniNX. We compared Sham-operated controls, left nephrectomy (UniNX) and unilateral...

Université de Fribourg

Translational issues in targeting brown adipose tissue thermogenesis for human obesity management

Dulloo, Abdul G.

In: Annals of the New York Academy of Sciences, 2013, vol. 1302, no. 1, p. 1–10

The recent advancements in unraveling novel mechanisms that control the induction, (trans)differentiation, proliferation, and thermogenic activity and capacity of brown adipose tissue (BAT), together with the application of imaging techniques for human BAT visualization, have generated optimism that these advances will provide novel strategies for targeting BAT thermogenesis, leading to...

Université de Fribourg

Total energy expenditure assessed by doubly labeled water technique and estimates of physical activity in Mauritian children: analysis by gender and ethnicity

Ramuth, Harris ; Schutz, Yves ; Calonne, Julie ; Joonas, Noorjehan ; Dulloo, Abdul G.

In: European Journal of Clinical Nutrition, 2020, vol. 74, no. 3, p. 445–453

In the tropical island of Mauritius, the rise in obesity has accelerated in the past decades, and could be contributed by low physical activity and increased sedentary behavior. The study objectives were to generate the first dataset of total energy expenditure (TEE), to estimate physical activity in Mauritian children, and to explore differences due to gender and ethnicity.Subjects/methods:...

Université de Fribourg

Thrifty metabolism that favors fat storage after caloric restriction: a role for skeletal muscle phosphatidylinositol-3-kinase activity and AMP-activated protein kinase

Summermatter, Serge ; Mainieri, Davide ; Russell, A. P. ; Seydoux, Josiane ; Montani, Jean-Pierre ; Buchala, Anthony J. ; Solinas, Giovanni ; Dulloo, Abdul G.

In: Faseb Journal, 2008, vol. 22, p. 774-785

Energy conservation directed at accelerating body fat recovery (or catch-up fat) contributes to obesity relapse after slimming and to excess fat gain during catch-up growth after malnutrition. To investigate the mechanisms underlying such thrifty metabolism for catch-up fat, we tested whether during refeeding after caloric restriction rats exhibiting catch-up fat driven by suppressed...

Université de Fribourg

Thrifty energy metabolism in catch-up growth trajectories to insulin and leptin resistance

Dulloo, Abdul G.

In: Best Practice & Research Clinical Endocrinology & Metabolism, 2008, vol. 22, no. 1, p. 155-171

Catch-up growth early in life (after fetal, neonatal or infantile growth retardation) is a major risk factor for later obesity, type-2 diabetes and cardiovascular diseases. These risks are generally interpreted alongside teleological arguments that environmental exposures which hinder growth early in life lead to programming of ‘thrifty mechanisms’ that are adaptive during the period of...

Université de Fribourg

The thrifty 'catch-up fat' phenotype: its impact on insulin sensitivity during growth trajectories to obesity and metabolic syndrome

Dulloo, Abdul G. ; Jacquet, Jean ; Seydoux, Josiane ; Montani, Jean-Pierre

In: International Journal of Obesity, 2006, vol. 30, no. S4, p. S23–S35

The analyses of large epidemiological databases have suggested that infants and children who show catch-up growth, or adiposity rebound at a younger age, are predisposed to the development of obesity, type 2 diabetes and cardiovascular diseases later in life. The pathophysiological mechanisms by which these growth trajectories confer increased risks for these diseases are obscure, but there is...

Université de Fribourg

The thermic effect of sugar-free Red Bull: Do the non-caffeine bioactive ingredients in energy drinks play a role?

Miles-Chan, Jennifer L. ; Charrière, Nathalie ; Grasser, Erik K ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: Obesity, 2015, vol. 23, no. 1, p. 16–19

Objective: Consumption of energy drinks is increasing amongst athletes and the general public. By virtue of their bioactive ingredients (including caffeine, taurine, glucuronolactone, and B-group vitamins) and paucity of calories, sugar-free “diet” versions of these drinks could be a useful aid for weight maintenance. Yet little is known about the acute influence of these drinks, and...