Concept

Cellule bêta

Publications associées (159)

Towards high resolution optical imaging of beta cells in vivo

Theo Lasser, Anne Grapin-Botton, Martin Villiger, Joan Goulley, Erica Martin-Williams

Endocrine beta cells produce and release insulin in order to tightly regulate glucose homeostasis and prevent metabolic pathologies such as Diabetes Mellitus. Optical imaging has contributed greatly to our current understanding of beta cell structure and f ...

Bentham Science Publishers2010

The transcription factor Rfx3 regulates beta-cell differentiation, function, and glucokinase expression

Philipp Bucher

OBJECTIVE: Pancreatic islets of perinatal mice lacking the transcription factor Rfx3 exhibit a marked reduction in insulin-producing beta-cells. The objective of this work was to unravel the cellular and molecular mechanisms underlying this deficiency. RES ...

American Diabetes Association2010

Mitochondrial matrix pH controls oxidative phosphorylation and metabolism-secretion coupling in INS-1E clonal beta cells

Kristina Schoonjans, Andreas Wiederkehr, Chikage Mataki

Glucose-evoked mitochondrial signals augment ATP synthesis in the pancreatic β cell. This activation of energy metabolism increases the cytosolic ATP/ADP ratio, which stimulates plasma membrane electrical activity and insulin granule exocytosis. We have re ...

2010

Targeting the TGR5-GLP-1 pathway to combat type 2 diabetes and non-alcoholic fatty liver disease

Johan Auwerx, Kristina Schoonjans, Thijs Pols

Incretin-based therapies have shown promise in the treatment of type 2 diabetes. Here we review our current understanding of TGR5 as a target to induce glucagon-like peptide-1 (GLP-1) secretion. These new observations suggest that TGR5 agonists may constit ...

Elsevier Masson2010

SIRT1 mRNA Expression May Be Associated with Energy Expenditure and Insulin Sensitivity

Johan Auwerx, Hiroyasu Yamamoto

Objective - Sirtuin 1 (SIRT1) is implicated in the regulation of mitochondrial function, energy metabolism, and insulin sensitivity in rodents. No studies are available in humans to demonstrate that SIRT1 expression in insulin sensitive tissues is associat ...

2010

Homing of GAD65 specific autoimmunity and development of insulitis requires expression of both DQ8 and human GAD65 in transgenic mice

Steinunn Baekkeskov Hanahan

MHC-class II genes determine susceptibility in human type-1 diabetes. In their context, presentation of target antigen(s) results in autoimmunity and b-cell destruction. An animal model, in which human b-cell autoantigen(s) are presented to effector cells ...

Elsevier2009

Cell-responsive hydrogel for encapsulation of vascular cells

Jeffrey Alan Hubbell

The in vitro potential of a synthetic matrix metalloproteinase (MMP)-responsive poly(ethylene glycol) (PEG)-based hydrogel as a bioactive co-encapsulation system for vascular cells and a small bioactive peptide, thymosin beta 4 (T beta 4), was examined. We ...

2009

In vivo imaging of murine endocrine islets of Langerhans with extended-focus optical coherence microscopy

Theo Lasser, Michael Friedrich, Rainer Leitgeb, Anne Grapin-Botton, Martin Villiger, Joan Goulley

Aims/hypothesis Structural and functional imaging of the islets of Langerhans and the insulin-secreting beta cells represents a significant challenge and a long-lasting objective in diabetes research. In vivo microscopy offers a valuable insight into beta ...

Springer Verlag2009

Molecular selective interface for an implantable glucose sensor based on the viscosity variation of a sensitive fluid containing dextran and Concanavalin A

Antoine Barraud

Diabetes mellitus is a globally growing disease with more than 180 million cases worldwide and no cure exists. In order to minimize the many medical complications, tight glucose monitoring has been shown to be the best alternative. Many diabetics require i ...

EPFL2009

Caffeine consumption attenuates neurochemical modifications in the hippocampus of streptozotocin-induced diabetic rats

Rolf Gruetter, João Miguel das Neves Duarte

Type 1 diabetes can affect hippocampal function triggering cognitive impairment through unknown mechanisms. Caffeine consumption prevents hippocampal degeneration and memory dysfunction upon different insults and is also known to affect peripheral glucose ...

Wiley-Blackwell2009

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