Opening of Ca2+-Dependent K+ Channels by Nordihydroguaiaretic Acid in Porcine Coronary Arterial Smooth Muscle Cells.
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- Nagano Norihiro
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Nagoya City University
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- Imaizumi Yuji
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Nagoya City University
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- Hirano Masaru
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Nagoya City University
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- Watanabe Minoru
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Nagoya City University
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Effects of nordihydroguaiaretic acid (NDGA) on the Ca2+-dependent K+ channel (BK channel) were examined by the patch clamp technique in single smooth muscle cells of porcine coronary artery. The open probability of BK channels in inside-out patches increased by about 30 times at the holding potential of 0 mV, when 10μM NDGA was added to the bathing solution (pCa 7.0). The effect of NDGA was concentration-dependent in the range of 1—100μM and partly removed by washout. The enhancement of BK channels by NDGA was not observed when the cytosolic Ca2+ concentration was very low (pCa > 8.5). These results clearly indicate that NDGA possesses a BK channel opening property in coronary arterial myocytes.
収録刊行物
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- Jpn.J.Pharmacol.
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Jpn.J.Pharmacol. 70 (3), 281-284, 1996
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
- 1390282679261380864
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- NII論文ID
- 10005714023
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- NII書誌ID
- AA00691188
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- COI
- 1:CAS:528:DyaK28XhvFags78%3D
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- ISSN
- 13473506
- 00215198
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- PubMed
- 8935724
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可