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Related publications (32)

Augmented mitochondrial energy metabolism is an early response to chronic glucose stress in human pancreatic beta cells

Loïc Dayon, Andreas Wiederkehr, Sofia Moco, Isabelle Chareyron

Aims/hypothesis In islets from individuals with type 2 diabetes and in islets exposed to chronic elevated glucose, mitochondrial energy metabolism is impaired. Here, we studied early metabolic changes and mitochondrial adaptations in human beta cells durin ...

2020

Targeting Mitochondrial Calcium Uptake with the Natural Flavonol Kaempferol, to Promote Metabolism/Secretion Coupling in Pancreatic beta-cells

Guillaume Jacot, Umberto De Marchi

Pancreatic beta-cells secrete insulin to lower blood glucose, following a meal. Maintenance of beta-cell function is essential to preventing type 2 diabetes. In pancreatic beta-cells, mitochondrial matrix calcium is an activating signal for insulin secreti ...

2020

N-acetylaspartate availability is essential for juvenile survival on fat-free diet and determines metabolic health

Johan Auwerx, Dina Hofer

N-acetylaspartate (NAA) is synthesized by aspartate N-acetyltransferase (gene: Nat8l) from acetyl-coenzyme A and aspartate. In the brain, NAA is considered an important energy metabolite for lipid synthesis. However, the role of NAA in peripheral tissues r ...

2019

Bioluminescent-based imaging and quantification of glucose uptake in vivo

Riccardo Sinisi, Elena Goun, Pavlo Khodakivskyi, Arkadiy Bazhin, Aleksey Yevtodiyenko, Tamara Maric, Georgy Mikhaylov

Glucose is a major source of energy for most living organisms, and its aberrant uptake is linked to many pathological conditions. However, our understanding of disease-associated glucose flux is limited owing to the lack of robust tools. To date, positron- ...

NATURE PUBLISHING GROUP2019

Optical microsystems for genetically engineered biosensors. Case study: Glucose monitoring

Bakul Jitendra Vinchhi

Diabetes is a global epidemic with millions of people dying from it every year. Progress in microelectronics and machine learning has led to a huge number of FDA approvals of devices for continuous monitoring and treatment of diabetes with one product usin ...

EPFL2019

Pancreatic beta cell based optical biosensor and system for continuous glucose monitoring

Catherine Dehollain, Umberto De Marchi, Bakul Jitendra Vinchhi, Ninad Dilip Agashe, Nicolas Bouche, Christophe Boss

A bio-electronics system that measures cytosolic [Ca2+] in vitro in the INS-1E pancreatic beta-cells using a 430 nm excitation light with the excitation wavelength of the probe being at 435 nm was successfully implemented and tested. We transfected the INS ...

IEEE2019

Optical pancreatic beta cell based biosensor, applications and glucose monitoring

Catherine Dehollain, Umberto De Marchi, Bakul Jitendra Vinchhi, Nicolas Bouche, Christophe Boss

An optical pancreatic beta-cell based biosensor for measuring cytosolic [Ca2+] is presented in this work. An in vitro bio-electronic system is built for testing various applications and characterizing features of the biosensor. A panoply of applications su ...

IEEE2019

Glycogen metabolism is impaired in the brain of male type 2 diabetic Goto‐Kakizaki rats

João Miguel das Neves Duarte, Ana Francisca Leal Silva Soares

Diabetes impacts the central nervous system predisposing to cognitive decline. While glucose is the main source of energy fueling the adult brain, brain glycogen is necessary for adequate neuronal function, synaptic plasticity and memory. In this study, we ...

2019

Role of metabolism and mitochondria during glucose sensing and glucose-induced dysfunction in human pancreatic beta-cells

Isabelle Chareyron

Glucose sensing and regulation of insulin secretion are the two main functions performed by the pancreatic beta-cell. Together these processes contribute to the tight control of blood glucose in our body. Compromising the ability of the beta-cells to prope ...

EPFL2019

Neurochemical Modifications in the Hippocampus, Cortex and Hypothalamus of Mice Exposed to Long-Term High-Fat Diet

João Miguel das Neves Duarte, Ana Francisca Leal Silva Soares, Blanca Lizarbe Serra

Metabolic syndrome and diabetes impact brain function and metabolism. While it is well established that rodents exposed to diets rich in saturated fat develop brain dysfunction, contrasting results abound in the literature, likely as result of exposure to ...

2019

Protein Bioconjugation to Carbon Nanotubes for Near-Infrared Sensing

Vitalijs Zubkovs

Single-walled carbon nanotubes (SWCNTs) are a promising material for electrochemical and optical biosensing applications. Their small dimensions, large surface area, indefinite photostability, and remarkable electronic properties make SWCNTs an ideal trans ...

EPFL2019

Genistein increases the thermogenic program of subcutaneous WAT and increases energy expenditure in mice

Lilia Noriega Lopez, Laura Alejandra Velazquez Villegas

White adipose tissue (WAT) can differentiate into beige adipose tissue by the browning process. Some polyphenols, including isoflavones, particularly genistein, are suggested to increase the expression of browning markers. There is evidence that consumptio ...

ELSEVIER SCIENCE INC2019

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