Publications associées à Régime diabétique

Microtubule-mediated GLUT4 trafficking is disrupted in insulin-resistant skeletal muscle

Martinus Gijs, Raphaël Etienne Jean Trouillon, Martin Rainer Wohlwend

Microtubules serve as tracks for long-range intracellular trafficking of glucose transporter 4 (GLUT4), but the role of this process in skeletal muscle and insulin resistance is unclear. Here, we used fixed and live-cell imaging to study microtubule-based ...

eLIFE SCIENCES PUBL LTD2023

Lipid biosynthesis enzyme Agpat5 in AgRP-neurons is required for insulin-induced hypoglycemia sensing and glucagon secretion

Maxime Jan

The counterregulatory response to hypoglycemia that restores normal blood glucose levels is an essential physiological function. It is initiated, in large part, by incompletely characterized brain hypoglycemia sensing neurons that trigger the secretion of ...

Nature Research2022

Pancreatic Sirtuin 3 Deficiency Promotes Hepatic Steatosis by Enhancing 5-Hydroxytryptamine Synthesis in Mice With Diet-Induced Obesity

Johan Auwerx, Kristina Schoonjans

Sirtuin 3 (SIRT3) is a protein deacetylase regulating beta-cell function through inhibiting oxidative stress in obese and diabetic mice, but the detailed mechanism and potential effect of beta-cell-specific SIRT3 on metabolic homeostasis, and its potential ...

AMER DIABETES ASSOC2021

Genetic, metabolic, and molecular insights into the diverse outcomes of diet-induced obesity in mouse

Alexis Maximilien Bachmann

Overweight and obesity are increasingly common public health issues worldwide, leading to a wide range of diseases from metabolic syndrome to steatohepatitis and cardiovascular diseases. While the increase in the prevalence of obesity is partly attributabl ...

EPFL2021

Differential roles of GDF15 and FGF21 in systemic metabolic adaptation to the mitochondrial integrated stress response

Johan Auwerx, Jun Yong Kim

Perturbation of mitochondrial proteostasis provokes cell autonomous and cell non-autonomous responses that contribute to homeostatic adaptation. Here, we demonstrate distinct metabolic effects of hepatic metabokines as cell non-autonomous factors in mice w ...

CELL PRESS2021

Multipotent mesenchymal stromal cells derived from porcine exocrine pancreas improve insulin secretion from juvenile porcine islet cell clusters

Sandrine Gerber, Luca Szabó, Léo Bühler

Neonatal and juvenile porcine islet cell clusters (ICC) present an unlimited source for islet xenotransplantation to treat type 1 diabetes patients. We isolated ICC from pancreata of 14 days old juvenile piglets and characterized their maturation by immuno ...

2021

Decoding Neural Metabolic Markers From the Carotid Sinus Nerve in a Type 2 Diabetes Model

Silvestro Micera

Recent studies showed that the carotid sinus nerve (CSN) and the sympathetic nervous system (SNS) are overactivated in type 2 diabetes and that restoring the correct CSN neural activity can re-establish the proper metabolism. However, a robust characteriza ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Glucose transporter 2 mediates the hypoglycemia-induced increase in cerebral blood flow

Rolf Gruetter, Hongxia Lei

Glucose transporter 2 (Glut2)-positive cells are sparsely distributed in brain and play an important role in the stimulation of glucagon secretion in response to hypoglycemia. We aimed to determine if Glut2-positive cells can influence another response to ...

2019

Modeling and performance investigation of insulin injection pen for diabetic persons

Catherine Dehollain, Maria-Alexandra Paun

This paper is focused on modeling and performance investigation of insulin injection pens used by diabetic persons. A smart pen cap with two electrodes is used as a capacitive sensor for insulin dose detection and is presented in details. To faithfully ana ...

IEEE2019

Multipotent mesenchymal stromal cells enhance insulin secretion from human islets via N-Cadherin interaction and prolong function of transplanted encapsulated islets in mice

Sandrine Gerber, Jutta Christine Wandrey, Redouan Mahou

Background: Multipotent mesenchymal stromal cells (MSC) enhance viability and function of islets of Langerhans. We aimed to examine the interactions between human MSC and human islets of Langerhans that influence the function of islets. Methods: Human MSC ...

Biomed Central Ltd2017

Pancreatic islet cells isolation and transplantation into the bone marrow

Sandrine Gerber

Bone marrow is currently being considered as an alternative site for pancreatic islet transplantation. The goal of the present review is to report preclinical and clinical studies taking advantage of this new implantation site. Preclinical studies in mice ...

2016

KAT2B Is Required for Pancreatic Beta Cell Adaptation to Metabolic Stress by Controlling the Unfolded Protein Response

Johan Auwerx, Hongbo Zhang

The endoplasmic reticulum (ER) unfolded protein response (UPR(er)) pathway plays an important role in helping pancreatic β cells to adapt their cellular responses to environmental cues and metabolic stress. Although altered UPR(er) gene expression appears ...

Elsevier2016

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

Carlos Canto Alvarez, Catherine Maclachlan, Patrick Descombes, Sylviane Métairon, Richardus Houtkooper, Joanna Ratajczak, 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 enhances glucose tolerance by potentiating brown adipose tissue function

Carlos Canto Alvarez, Joanna Ratajczak, Pablo Jose Fernandez Marcos

Objective: SIRT1 has been proposed to be a key signaling node linking changes in energy metabolism to transcriptional adaptations. Although SIRT1 overexpression is protective against diverse metabolic complications, especially in response to high-fat diets ...

Elsevier Science Bv2015

Anti-Obesity and Anti-Hyperglycemic Effects of Cinnamaldehyde via altered Ghrelin Secretion and Functional impact on Food Intake and Gastric Emptying

Henry Markram, Julie Meystre, Maurizio Ferdinando Pezzoli, Johannes Le Coutre, Susana Camacho Romero

Cinnamon extract is associated to different health benefits but the active ingredients or pathways are unknown. Cinnamaldehyde (CIN) imparts the characteristic flavor to cinnamon and is known to be the main agonist of transient receptor potential-ankyrin r ...

Nature Publishing Group2015

TGR5 reduces macrophage migration through mTOR-induced C/EBP beta differential translation

Kristina Schoonjans, Alessia Perino, Matthias Alexander Sokrates Stein, Mitsunori Nomura, Thijs Pols

The bile acid-responsive G protein-coupled receptor TGR5 is involved in several metabolic processes, and recent studies suggest that TGR5 activation may promote pathways that are protective against diet-induced diabetes. Here, we investigated the role of m ...

American Society for Clinical Investigation2014

Gut microbiota metabolism of dietary fiber influences allergic airway disease and hematopoiesis

Nicola Harris, Eva Sabrina Gollwitzer, Benjamin John Marsland

Metabolites from intestinal microbiota are key determinants of host-microbe mutualism and, consequently, the health or disease of the intestinal tract. However, whether such host-microbe crosstalk influences inflammation in peripheral tissues, such as the ...

Nature Publishing Group2014

Role of the bile acid membrane receptor TGR5 in macrophages and metabolism

Mitsunori Nomura

Activation of the bile acid responsive G protein-coupled receptor TGR5 improves metabolic homeostasis via induction of energy expenditure and release of glucagon-like peptide-1 (GLP-1). The goal of my PhD work was to explore the role of macrophage TGR5 wit ...

EPFL2013

The activation of hepatic and muscle polyamine catabolism improves glucose homeostasis

Eija Riitta Pirinen

The mitochondrial biogenesis and energy expenditure regulator, PGC-1 alpha, has been previously reported to be induced in the white adipose tissue (WAT) and liver of mice overexpressing spermidine/spermine N (1)-acetyltransferase (SSAT). The activation of ...

2012

High-Resolution Magnetic Resonance Imaging Quantitatively Detects Individual Pancreatic Islets

Rolf Gruetter, Riikka Immonen, Christine Nabuurs

OBJECTIVE-We studied whether manganese-enhanced high-field magnetic resonance (MR) imaging (MEHFMRI) could quantitatively detect individual islets in situ and in vivo and evaluate changes in a model of experimental diabetes. ...

2011