書誌事項
- タイトル別名
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- Electropharmacological effects of multi-ion channel blockers assessed in hiPSC-CMs sheets with MEA system
抄録
<p>[Purpose] We examined electrophysiological indices of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) sheets in order to quantitatively estimate multichannel blocking actions of bepridil and amiodarone using MEA system in comparison with that of E-4031. [Methods] We analyzed the field potential duration(FPD), effective refractory period, current threshold and conduction property using a programmed electrical stimulation protocol to obtain the post repolarization refractoriness(PRR) and coefficient a of the relationship between the pacing cycle length and FPD. [Results & Conclusions] Electropharmacological profiles of drugs were successfully characterized; namely, 1) the changes in the current threshold and conduction property provided important information of Na+ channel blocking kinetics, 2) the change of coefficient a reflected drug-induced inhibition of hERG K+ channel, 3) the PRR indicated the relative contribution of these drugs to Na+ and K+ channel blockade, and 4) L-type Ca2+ channel blocking action was obvious in the field potential waveform of the hiPSC-CMs sheets, which will help to predict whether the net balance of Ca2+ and K+ channel blockade of a drug is proarrhythmic or antiarrhythmic.</p>
収録刊行物
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- 日本薬理学会年会要旨集
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日本薬理学会年会要旨集 92 (0), 1-P-074-, 2019
公益社団法人 日本薬理学会
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詳細情報 詳細情報について
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- CRID
- 1390565134837715584
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- NII論文ID
- 130007812696
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- ISSN
- 24354953
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可