Publications related to Parathyroid hormone

SLC25A46 promotes mitochondrial fission and mediates resistance to lipotoxic stress in INS-1E insulin-secreting cells

Glucose sensing in pancreatic D-cells depends on oxidative phosphorylation and mitochondria-derived signals that promote insulin secretion. Using mass spectrometry-based phosphoproteo-mics to search for downstream effectors of glucose-dependent signal tran ...

COMPANY BIOLOGISTS LTD2023

Extended gate field-effect-transistor for sensing cortisol stress hormone

Mihai Adrian Ionescu, Junrui Zhang, Hoël Maxime Guérin, Luca Capua, Sadegh Kamaei Bahmaei, Shokoofeh Sheibani, Sayedeh Shirin Afyouni Akbari

Cortisol is a hormone released in response to stress and is a major glucocorticoid produced by adrenal glands. Here, we report a wearable sensory electronic chip using label-free detection, based on a platinum/graphene aptamer extended gate field effect tr ...

SPRINGERNATURE2021

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

Dynamic wetting in pressure-infiltration of ceramic particle preforms by molten metal

Gionata Schneider

This thesis investigates the interaction between mechanically induced flow of a liquid metal into a porous solid, and kinetic effects at the triple line. The approach is experimental and focuses on metal-ceramic systems for which the literature gives value ...

EPFL2019

Mechanism and effects of pulsatile GABA secretion from cytosolic pools in the human beta cell

Steinunn Baekkeskov Hanahan, Chiara Cianciaruso, Petra Catalina Schwalie, Edward Allen Phelps

Pancreatic beta cells synthesize and secrete the neurotransmitter GABA (gamma-aminobutyric acid) as a paracrine and autocrine signal to help regulate hormone secretion and islet homeostasis. Islet GABA release has classically been described as a secretory- ...

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

A Preclinical Model for ERα-Positive Breast Cancer Points to the Epithelial Microenvironment as Determinant of Luminal Phenotype and Hormone Response

Cathrin Brisken, Georgios Sflomos, Valentina Scabia, Ayyakkannu Ayyanan, Rachel Marcone, Laura Battista, Maryse Fiche, Valérian Charles Robert Dormoy

Seventy-five percent of breast cancers are estrogen receptor α positive (ER(+)). Research on these tumors is hampered by lack of adequate in vivo models; cell line xenografts require non-physiological hormone supplements, and patient-derived xenografts (PD ...

Elsevier2016

T Cell Costimulation Molecules CD80/86 Inhibit Osteoclast Differentiation by Inducing the IDO/Tryptophan Pathway

Mario Michael Zaiss, Zhen Chen

Bone resorption is seminal for the physiological remodeling of bone during life. However, this process needs to be strictly controlled; excessive bone resorption results in pathologic bone loss, osteoporosis, and fracture. We describe a control mechanism o ...

Amer Assoc Advancement Science2014

Stimulus-induced modulation of transcriptional bursting in a single mammalian gene

Felix Naef, Benjamin Zoller, David Michael Suter, Rosamaria Cannavo

Mammalian genes are often transcribed discontinuously as short bursts of RNA synthesis followed by longer silent periods. However, how these "on" and "off" transitions, together with the burst sizes, are modulated in single cells to increase gene expressio ...

National Academy of Sciences2013

Progesterone/RANKL Is a Major Regulatory Axis in the Human Breast

Cathrin Brisken, Tamara Tanos, Georgios Sflomos, Ayyakkannu Ayyanan, Maryse Fiche, Maria Gutierrez Najera

Estrogens and progesterones are major drivers of breast development but also promote carcinogenesis in this organ. Yet, their respective roles and the mechanisms underlying their action in the human breast are unclear. Receptor activator of nuclear factor ...

American Association for the Advancement of Science2013

Paracrine signaling by progesterone

Cathrin Brisken, Renuga Devi Rajaram

Steroid hormones coordinate and control the development and function of many organs and are implicated in many pathological processes. Progesterone signaling, in particular, is essential for several important female reproductive functions. Physiological ef ...

Elsevier2012

MULTI-ANALYTE DETECTION FOR BIOLOGICAL FLUIDS Towards Continous Monitoring of Glucose, Ionized Calcium and pH using a Viscometric Affinity Biosensor

Peter Ryser, Eric Meurville, Christophe Boss, Frédéric Schmitt, Pablo Dosil Rosende

We present a viscometric affinity biosensor that can potentially allow continuous multi-analyte monitoring in biological fluids like blood or plasma. The sensing principle is based on the detection of viscosity changes of a polymeric solution which has a s ...

SciTePress2011

Effects of sonochemical parameters and inorganic ions during the sonochemical degradation of crystal violet in water

César Pulgarin, Fernando Guzman Duque

This work deals with the ultrasonic degradation (800 kHz) of crystal violet (CV) under different experimental conditions. The effects of saturating gas (argon, carbon dioxide and air), CV concentration (2.45-1225 mu mol L-1), pH (3-9) and power (20-80 W) w ...

2011

Two distinct mechanisms underlie progesterone-induced proliferation in the mammary gland

Cathrin Brisken, Ayyakkannu Ayyanan, Marian Caikovski

The mouse mammary gland develops postnatally under the control of female reproductive hormones. Estrogens and progesterone trigger morphogenesis by poorly understood mechanisms acting on a subset of mammary epithelial cells (MECs) that express their cognat ...

National Academy of Sciences2010

Osteoclastogenesis can be mechanically-induced in the peri-implant bone

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

Total joint replacements are highly successful in relieving pain and restoring movement of damaged joints. However, the lifespan of the implants is limited. The implant’s long-term stability depends largely on the preservation of periprosthetic bone. Debri ...

2009

Bone healing induced by local delivery of an engineered parathyroid hormone prodrug

Jeffrey Alan Hubbell

Regenerative medicine requires innovative therapeutic designs to accommodate high morphogen concentrations in local depots, provide their sustained presence, and enhance cellular invasion and directed differentiation. Here we present an example for inducin ...

2009

Osteopenia, decreased bone formation and impaired osteoblast development in Sox4 heterozygous mice

Vincent Stadelmann

The transcription factor Sox4 is vital for fetal development, as Sox4–/– homozygotes die in utero. Sox4 mRNA is expressed in the early embryonic growth plate and is regulated by parathyroid hormone, but its function in bone modeling/remodeling is unknown. ...

2007

Calcium dynamics and intercellular communication in arterial smooth muscle cells

Mathieu Lamboley

This thesis is a contribution to the field of cellular communication in arteries during vasomotion, i.e. rhythmic and spontaneous diameter oscillations of arteries. Investigating how individual smooth muscle cells (SMCs) and endothelial cells (ECs) calcium ...

EPFL2005

Continuous delivery of human and mouse erythropoietin in mice by genetically engineered polymer encapsulated myoblasts

Patrick Aebischer, Nicole Déglon, Bernard Schneider

The transplantation of polymer encapsulated myoblasts genetically engineered to secrete erythropoietin (Epo) may obviate the need for repeated parenteral administration of recombinant Epo as a treatment for chronic renal failure, cancer or AIDS-associated ...

1998