Hypotensive Effects of YM430, a 1,4-Dihydropyridine Derivative, in Spontaneously Hypertensive Rats and Renal Hypertensive Dogs.
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- Shibasaki Kumiko
- Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd.
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- Takizawa Kenji
- Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd.
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- Uchida Wataru
- Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd.
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- Takenaka Toichi
- Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd.
書誌事項
- タイトル別名
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- Hypotensive Effects of YM430 a 1 4 Dihy
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The hypotensive effects of YM430 (4(((S)-2-hydroxy-3-phenoxypropyl)amino)butyl methyl 2, 6-dimethyl-((S)-4-(m-nitrophenyl))-1, 4-dihydropyridine-3, 5-dicarboxylate)were evaluated in hypertensive animals. In conscious spontaneously hypertensive rats (SHR), single oral administration of YM430 (10-100 mg/kg)produced a dose-dependent decrease in mean blood pressure (MBP)with slight reflex tachycardia. The hypotensive effect of YM430 reached its maximum about 2 hr after dosing and lasted for over 10 hr. Importantly, the β1-adrenoceptor blocking activity of YM430 had a similar time course to that of its calcium entry blocking activity. In conscious normotensive dogs (NTD: 1-10 mg/kg, p.o.), YM430 decreased MBP without reflex tachycardia, and inhibited isoproterenol (ISO)-induced tachycardia in a dose-dependent manner. In conscious renal hypertensive dogs (RHD: 0.3-3 mg/kg, p.o.), YM430 also produced a sustained hypotensive effect. Furthermore, on repeated oral administration to conscious SHR and NTD, YM430 caused a long-lasting hypotensive effect. This hypotensive activity and inhibition of ISO-induced tachycardia showed neither tolerance, augmentation nor rebound. In conclusion, YM430 has a long-lasting hypotensive effect and behaves as a hybrid compound, combining calcium entry blocking and β1-adrenoceptor blocking activities in vivo. In addition, the degree of the blocking activities of YM430 remains nearly constant in the long-term after oral administration.
収録刊行物
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- Jpn.J.Pharmacol.
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Jpn.J.Pharmacol. 73 (2), 113-124, 1997
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
- 1390001204286963456
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- NII論文ID
- 10008677060
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- NII書誌ID
- AA00691188
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- COI
- 1:CAS:528:DyaK2sXhsVWgtbk%3D
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- ISSN
- 13473506
- 00215198
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- NDL書誌ID
- 4153686
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- PubMed
- 9074945
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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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- 抄録ライセンスフラグ
- 使用不可