Extracellular calcium sensing receptor in human pancreatic cells

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Extracellular calcium sensing receptor in human pancreatic cells.

BACKGROUND AND AIMS The extracellular calcium sensing receptor (CaR) plays a key role in the calcium homeostatic system and is therefore widely expressed in tissues involved in calcium metabolism. However, the CaR has also been identified in other tissues where its role is less clear. We have investigated the presence of the CaR in the human pancreas. METHODS Messenger RNA for the CaR was det...

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Extracellular calcium-sensing receptor is functionally expressed in human artery.

Accelerated medial calcification is a major cause of premature cardiovascular mortality in patients with chronic kidney disease (CKD). Evidence suggests that extracellular concentration of Ca2+ and vascular smooth muscle cells may play a pivotal role in the pathogenesis of vascular calcification. The calcium-sensing receptor (CaSR) is a G protein-coupled receptor that is expressed in a range of...

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The extracellular calcium-sensing receptor on human beta-cells negatively modulates insulin secretion.

The presence and functional significance of the extracellular calcium-sensing receptor (CaR) on human pancreatic beta-cells were investigated. Reverse transcriptase-polymerase chain reaction with primers for the extracellular domain of the CaR expressed in human parathyroid-secreting cells identified a product of the expected size in human pancreatic mRNA. Immunocytochemistry using an antibody ...

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Extracellular calcium sensing and extracellular calcium signaling.

The cloning of a G protein-coupled extracellular Ca(2+) (Ca(o)(2+))-sensing receptor (CaR) has elucidated the molecular basis for many of the previously recognized effects of Ca(o)(2+) on tissues that maintain systemic Ca(o)(2+) homeostasis, especially parathyroid chief cells and several cells in the kidney. The availability of the cloned CaR enabled the development of DNA and antibody probes f...

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Calcium Sensing Receptor Modulates Extracellular Calcium Entry and Proliferation via TRPC3/6 Channels in Cultured Human Mesangial Cells

Calcium-sensing receptor (CaSR) has been demonstrated to be present in several tissues and cells unrelated to systemic calcium homeostasis, where it regulates a series of diverse cellular functions. A previous study indicated that CaSR is expressed in mouse glomerular mesangial cells (MCs), and stimulation of CaSR induces cell proliferation. However, the signaling cascades initiated by CaSR act...

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ژورنال

عنوان ژورنال: Gut

سال: 2002

ISSN: 0017-5749

DOI: 10.1136/gut.51.5.705