Publications de Sylviane Métairon

Mice with humanized livers reveal the role of hepatocyte clocks in rhythmic behavior

Cédric Gobet, Sylviane Métairon, Frédéric Bruno Martin Gachon, Benjamin Dieter Weger

The synchronization of circadian clock depends on a central pacemaker located in the suprachiasmatic nuclei. However, the potential feedback of peripheral signals on the central clock remains poorly characterized. To explore whether peripheral organ circad ...

AMER ASSOC ADVANCEMENT SCIENCE2023

In vivo transcriptomic profiling using cell encapsulation identifies effector pathways of systemic aging

Nicolas Bouche, Christophe Boss, Patrick Descombes, Filippo De Franceschi, Sylviane Métairon, Jérome Feige, Omid Mashinchian

Sustained exposure to a young systemic environment rejuvenates aged organisms and promotes cellular function. However, due to the intrinsic complexity of tissues it remains challenging to pinpoint niche-independent effects of circulating factors on specifi ...

2022

Genome-wide gene-based analyses of weight loss interventions identify a potential role for NKX6.3 in metabolism

Patrick Descombes, Hélène Ruffieux, Jörg Hager, Nele Gheldof, Sylviane Métairon

Hundreds of genetic variants have been associated with Body Mass Index (BMI) through genome-wide association studies (GWAS) using observational cohorts. However, the genetic contribution to efficient weight loss in response to dietary intervention remains ...

Springer2019

Mitochondrial oxidative capacity and NAD(+) biosynthesis are reduced in human sarcopenia across ethnicities

Patrick Descombes, Sylviane Métairon, Sofia Moco, Sonia Karaz, Tanja Sonntag, Lei Feng

The causes of impaired skeletal muscle mass and strength during aging are well-studied in healthy populations. Less is known on pathological age-related muscle wasting and weakness termed sarcopenia, which directly impacts physical autonomy and survival. H ...

Springer2019

Aging Disrupts Muscle Stem Cell Function by Impairing Matricellular WISP1 Secretion from Fibro-Adipogenic Progenitors

Patrick Descombes, Guillaume Jacot, Sara Ancel, Laura Lukjanenko, Sylviane Métairon, Sonia Karaz, Federico Sizzano, Omid Mashinchian

Research on age-related regenerative failure of skeletal muscle has extensively focused on the phenotypes of muscle stem cells (MuSCs). In contrast, the impact of aging on regulatory cells in the MuSC niche remains largely unexplored. Here, we demonstrate ...

CELL PRESS2019

Mfn1 Deficiency in the Liver Protects Against Diet-Induced Insulin Resistance and Enhances the Hypoglycemic Effect of Metformin

Patrick Descombes, Carlos Canto Alvarez, Richardus Houtkooper, Sylviane Métairon, Joanna Ratajczak, Catherine Maclachlan, Wen Gao

Mitochondrial function can be influenced by mitochondrial shape and connectivity with other cellular organelles through fusion and fission processes. Disturbances in mitochondrial architecture and mitochondrial fusion related genes are observed in situatio ...

American Diabetes Association2016

SIRT1 Gain of Function Does Not Mimic or Enhance the Adaptations to Intermittent Fasting

Patrick Descombes, Carlos Canto Alvarez, Sylviane Métairon

Caloric restriction (CR) has been shown to prevent the onset of insulin resistance and to delay age-related physiological decline in mammalian organisms. SIRT1, a NAD(+) -dependent deacetylase enzyme, has been suggested to mediate the adaptive responses to ...

Elsevier2016

Perturbed rhythmic activation of signaling pathways in mice deficient for Sterol Carrier Protein 2-dependent diurnal lipid transport and metabolism

Cédric Gobet, Sylviane Métairon, Celine Jouffe, Frédéric Bruno Martin Gachon, Mojgan Masoodi

Through evolution, most of the living species have acquired a time keeping system to anticipate daily changes caused by the rotation of the Earth. In all of the systems this pacemaker is based on a molecular transcriptional/translational negative feedback ...

Nature Research2016

Protective effects of maternal nutritional supplementation with lactoferrin on growth and brain metabolism

Rolf Gruetter, Yohan Van de Looij, Sylviane Métairon

Background:Intrauterine growth restriction (IUGR) is a major risk factor for both perinatal and long-term morbidity. Bovine lactoferrin (bLf) is a major milk glycoprotein considered as a pleiotropic functional nutrient. The impact of maternal supplementati ...

Nature Publishing Group2014

Consequences of Exchanging Carbohydrates for Proteins in the Cholesterol Metabolism of Mice Fed a High-fat Diet

Mireille Moser, Martin Kussmann, Sylviane Métairon

Consumption of low-carbohydrate, high-protein, high-fat diets lead to rapid weight loss but the cardioprotective effects of these diets have been questioned. We examined the impact of high-protein and high-fat diets on cholesterol metabolism by comparing t ...

Public Library of Science2012