The Conventional Antihistamine Drug Cyproheptadine Lacks QT-interval–Prolonging Action in Halothane-Anesthetized Guinea Pigs: Comparison With Hydroxyzine
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- Kobayashi Kazuko
- Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Toho University, Japan Department of Pharmacy, Toho University Sakura Medical Center, Japan
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- Omuro Naoki
- Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Toho University, Japan
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- Takahara Akira
- Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Toho University, Japan
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抄録
Antihistamines are known to belong to the chemical class that may induce long QT syndrome. Among them, cyproheptadine has been shown to exert multifaceted actions on the ventricular repolarization phase; namely, shortening of the action potential duration at supra-therapeutic concentrations of 2 – 8 μM and prolongation of the QT interval at ≥ 10 μM. Since information is limited regarding the in vivo electrophysiological effects of cyproheptadine, we assessed it using the halothane-anesthetized guinea-pig model, which was compared with effects of another antihistamine drug, hydroxyzine. Sub-therapeutic to therapeutic doses of hydroxyzine at 1 and 10 mg/kg, i.v. prolonged the QT interval and duration of monophasic action potential, whereas therapeutic to supra-therapeutic doses of cyproheptadine at 0.1 and 1 mg/kg, i.v. hardly affected the indices of ventricular repolarization. These results suggest that cyproheptadine may be categorized into antihistamines with little effect on the ventricular repolarization.
収録刊行物
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- Journal of Pharmacological Sciences
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Journal of Pharmacological Sciences 124 (1), 92-98, 2014
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
- 1390001205178513152
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- NII論文ID
- 130003382628
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- NII書誌ID
- AA11806667
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- COI
- 1:CAS:528:DC%2BC2cXhvVWgtLY%3D
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- ISSN
- 13478648
- 13478613
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- NDL書誌ID
- 025159511
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- PubMed
- 24389819
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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
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可