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Calcium Channels Regulate Neuronal Function,Gene Expression,and Development Akito Nakao 1 , Yoshinori Takada 1 , Yasuo Mori 1 1Department of Synthetic Chemistry and Biological Chemistry,Graduate School of Engineering,Kyoto University,Katsura Campus Keyword: voltage-dependent calcium channel , transient receptor potential channel , neurotransmitter release , gene transcription , neuronal growth pp.657-667
Published Date 2011/7/1
DOI https://doi.org/10.11477/mf.1416100946
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Abstract

 Calcium ions (Ca2+) play important roles as secondary messengers in the body. The intracellular Ca2+ concentration is increased via 2 mechanisms: (1) is an influx of external Ca2+ and (2) Ca2+ release from the endoplasmic reticulum. Ca2+ influx across the plasma membrane involves 3 main types of channels: voltage-dependent calcium channels (VDCCs),ligand-gated calcium channels,and transient receptor potential (TRP) channels. VDCCs are activated by depolarization of membrane potential. VDDC-mediated Ca2+ signaling is essential for neurotransmitter release,synaptic plasticity,and gene transcription. The TRP family comprises at least 28 cation channels,most of which are permeable to Ca2+. TRP channels function as cellular sensors and are activated by various chemical and physical stimuli. In the nervous system,Ca2+ signaling via TRP channels is important for neuronal growth,development,survival,and cell death. In this review,we discuss how Ca2+ signaling via VDCCs and TRP channels mediates various neuronal processes.


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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