Pancreatic beta cell function

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Publications associées (31)

Structural and Functional Imaging of Pancreatic Islets using Optical Coherence Microscopy

Corinne Berclaz

In diabetes, pancreatic beta-cells play a key role. These cells are organized within structures called islets of Langerhans inside the pancreas and produce insulin. Insulin is one of the main hormones contributing to glucose homeostasis, which is the hallm ...

EPFL2015

Compartmentalization of GABA synthesis by GAD67 differs between pancreatic beta cells and neurons

Steinunn Baekkeskov Hanahan, Chiara Cianciaruso, Miriella Carmela Pasquier, Edward Allen Phelps

The inhibitory neurotransmitter GABA is synthesized by the enzyme glutamic acid decarboxylase (GAD) in neurons and in pancreatic β-cells in islets of Langerhans where it functions as a paracrine and autocrine signaling molecule regulating the function of i ...

Public Library of Science2015

Metabolic Alterations Associated to Brain Dysfunction in Diabetes

João Miguel das Neves Duarte

From epidemiological studies it is known that diabetes patients display increased risk of developing dementia. Moreover, cognitive impairment and Alzheimer's disease (AD) are also accompanied by impaired glucose homeostasis and insulin signalling. Although ...

Int Soc Aging & Disease2015

Impact of hepatic lipid accumulation and composition on glucose tolerance and insulin sensitivity: a longitudinal study in male and female mice

Rolf Gruetter, Hongxia Lei, Ana Francisca Leal Silva Soares

Background and aims: Metabolic disruptions characterized by high hepatic lipid content (HLC) are associated with impairments in whole body glucose homeostasis. To gain insight on the role of hepatic lipids in the metabolic performance in the absence artifi ...

Springer2014

Artificial three-dimensional niches deconstruct pancreas development in vitro

Matthias Lütolf, Filippo De Franceschi, Anne Grapin-Botton, Adrian Ranga, Samy Gobaa, Chiara Greggio

In the context of a cellular therapy for diabetes, methods for pancreatic progenitor expansion and subsequent differentiation into insulin-producing beta cells would be extremely valuable. Here we establish three-dimensional culture conditions in Matrigel ...

Company Of Biologists Ltd2013

Autonomous and self-sustained circadian oscillators displayed in human islet cells

Michaël Unser, Daniel Sage, Christophe Bauer

Following on from the emerging importance of the pancreas circadian clock on islet function and the development of type 2 diabetes in rodent models, we aimed to examine circadian gene expression in human islets. The oscillator properties were assessed in i ...

Springer2013

COUP-TFII Controls Mouse Pancreatic beta-Cell Mass through GLP-1-beta-Catenin Signaling Pathways

Anne Grapin-Botton

Background: The control of the functional pancreatic beta-cell mass serves the key homeostatic function of releasing the right amount of insulin to keep blood sugar in the normal range. It is not fully understood though how beta-cell mass is determined. ...

2012

Specific Silencing of the REST Target Genes in Insulin-Secreting Cells Uncovers Their Participation in Beta Cell Survival

Emilie Gesina

The absence of the transcriptional repressor RE-1 Silencing Transcription Factor (REST) in insulin-secreting beta cells is a major cue for the specific expression of a large number of genes. These REST target genes were largely ascribed to a function of ne ...

Public Library of Science2012

Planar Cell Polarity Controls Pancreatic Beta Cell Differentiation and Glucose Homeostasis

Anne Grapin-Botton, Mathieu Gouzi, Cédric Cortijo

Planar cell polarity (PCP) refers to the collective orientation of cells within the epithelial plane. We show that progenitor cells forming the ducts of the embryonic pancreas express PCP proteins and exhibit an active PCP pathway. Planar polarity proteins ...

Cell Press2012

Definition of in Vitro Microenvironments to Characterize and Control Pancreatic Progenitor Expansion and Differentiation

Chiara Greggio

The pancreas plays a central role in metabolism. The exocrine pancreas, composed of ductal and acinar cells, secretes and delivers digestive enzymes into the duodenum where they contribute to food digestion. The endocrine pancreas, constituted by the islet ...

EPFL2011

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

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