Abstract
Rapid estrogen actions are triggered after estrogens are bound to a variety of proteins in organelles other than the nucleus. Those include classic estrogen receptors ERα and ERβ, novel membrane proteins that behave as estrogen receptors such as GPR30, ion channels, and other ligand receptors. In pancreatic α and β-cells, estrogens binding to a non-classical membrane estrogen receptors at physiological concentrations regulate ion channels and [Ca2+]i signals, provoking important physiological responses. In β-cells, 17β- estradiol regulates KATP channel activity and glucose-induced [Ca2+]i oscillations, eliciting changes in insulin release and the activation of Ca2+-dependent transcription factors. In α-cells, 17β-estradiol abolishes low glucose-induced [Ca2+]i oscillations.
Infectious Disorders - Drug Targets
Title: Rapid Regulation of Pancreatic α- and β- Cell Signalling Systems by Estrogens
Volume: 8 Issue: 1
Author(s): Cristina Ripoll, Ana B. Ropero, Paloma Alonso-Magdalena, Ivan Quesada, Esther Fuentes and Angel Nadal
Affiliation:
Abstract: Rapid estrogen actions are triggered after estrogens are bound to a variety of proteins in organelles other than the nucleus. Those include classic estrogen receptors ERα and ERβ, novel membrane proteins that behave as estrogen receptors such as GPR30, ion channels, and other ligand receptors. In pancreatic α and β-cells, estrogens binding to a non-classical membrane estrogen receptors at physiological concentrations regulate ion channels and [Ca2+]i signals, provoking important physiological responses. In β-cells, 17β- estradiol regulates KATP channel activity and glucose-induced [Ca2+]i oscillations, eliciting changes in insulin release and the activation of Ca2+-dependent transcription factors. In α-cells, 17β-estradiol abolishes low glucose-induced [Ca2+]i oscillations.
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Cite this article as:
Ripoll Cristina, Ropero B. Ana, Alonso-Magdalena Paloma, Quesada Ivan, Fuentes Esther and Nadal Angel, Rapid Regulation of Pancreatic α- and β- Cell Signalling Systems by Estrogens, Infectious Disorders - Drug Targets 2008; 8 (1) . https://dx.doi.org/10.2174/187152608784139668
DOI https://dx.doi.org/10.2174/187152608784139668 |
Print ISSN 1871-5265 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-3989 |
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