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Intracellular calcium level is an important factor influencing ion channel modulations by PLC-coupled metabotropic receptors in hippocampal neurons
http://hdl.handle.net/2297/35107
http://hdl.handle.net/2297/35107f37178d8-6b04-404a-b5da-45d4a7869484
名前 / ファイル | ライセンス | アクション |
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ME-PR-SHOSAKU-T-9.pdf (331.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Intracellular calcium level is an important factor influencing ion channel modulations by PLC-coupled metabotropic receptors in hippocampal neurons | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Sugawara, Yuto
× Sugawara, Yuto× Echigo, Ryousuke× Kashima, Kousuke× Minami, Hanae× Watanabe, Megumi× Nishikawa, Yuiko× Muranishi, Miho× Yoneda, Mitsugu× Ohno-Shosaku, Takako |
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書誌情報 |
Brain Research 巻 1512, p. 9-21, 発行日 2013-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0006-8993 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1152177X | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.brainres.2013.03.040 | |||||
出版者 | ||||||
出版者 | Elsevier B. V. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Signaling pathways involving phospholipase C (PLC) are involved in various neural functions. Understanding how these pathways are regulated will lead to a better understanding of their roles in neural functions. Previous studies demonstrated that receptor-driven PLCβ activation depends on intracellular Ca2+ concentration ([Ca2+]i), suggesting the possibility that PLCβ-dependent cellular responses are basically Ca 2+ dependent. To test this possibility, we examined whether modulations of ion channels driven by PLC-coupled metabotropic receptors are sensitive to [Ca2+]i using cultured hippocampal neurons. Muscarinic activation triggered an inward current at -100 mV (the equilibrium potential for K+) in a subpopulation of neurons. This current response was suppressed by pirenzepine (an M1-preferring antagonist), PLC inhibitor, non-selective cation channel blocker, and lowering [Ca 2+]i. Using the neurons showing no response at -100 mV, effects of muscarinic activation on K+ channels were examined at -40 mV. Muscarinic activation induced a transient decrease of the holding outward current. This current response was mimicked and occluded by XE991, an M-current K+ channel blocker, suppressed by pirenzepine, PLC inhibitor and lowering [Ca2+]i, and enhanced by elevating [Ca 2+]i. Similar results were obtained when group I metabotropic glutamate receptors were activated instead of muscarinic receptors. These results clearly show that ion channel modulations driven by PLC-coupled metabotropic receptors are dependent on [Ca2+]i, supporting the hypothesis that cellular responses induced by receptor-driven PLCβ activation are basically Ca2+ dependent. © 2013 Elsevier B.V. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |