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Analysis of effects of Ca-antagonists in pathophysiological models

Analysis of effects of Ca-antagonists in pathophysiological models
Ca2+拮抗剂在病理生理模型中的作用分析
批准号:
04454530
负责人:
NAGAO Taku
金额:
$4.29万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for General Scientific Research (B)
财政年份:
1992
资助国家:
日本
项目状态:
已结题
起止时间:
1992 至 1993

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中文摘要
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英文摘要
An analysis of the mechanism of Ca antagonists was studied in the pathological model condition.(1) The number of Ca channels in aortas of SHR and WKY rats are not significantly different, even when hypertension is established in SHR.(2) The effects of diltiazem and its quaternary derivatives on ICa(L) in isolated ventricular myocytes were studied in normal and different pH conditions. We found that diltiazem acts from outside of the membrane.(3) The effects of elevation of extracellular K+ concentration on the negative inotropic potencies of Ca antagonists were investigated in guinea-pig ventricular muscle. We found that the differential effects of the Ca antagonists are explained by the differences in voltage dependency of their use-dependent blocking effects on ICa(L).
期刊论文(42)
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会议论文
R.Okuyama: "Effect of K^+-depolarization on the potency of Ca^2 antagonists in the guinea-pig isolated papillary muscle" The Japanese Journal of Pharmacology. 58. 189 (1992)
R.Okuyama:“K^-去极化对豚鼠离体乳头肌中 Ca^2 拮抗剂效力的影响”《日本药理学杂志》。
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S.Adachi-Akahane: "Binding sites for diltiazem is on the extracellular side of the L-type Ca^<2+> channel" Circulation. 88(Supplement). I-230 (1993)
S.Adachi-Akahane:“地尔硫卓的结合位点位于 L 型 Ca^2 通道的细胞外侧”循环。
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S.Ikeda, Y.Amano, S.Adachi-Akahane and T.Nagao: "Binding of (+)[^3H]PN200-110 to aortic and cardiac membranes from spontaneously hypertensive rats (SHR)in comparison with that from normotensive Wistar-Kyoto (WHY) rats." Jpn.H.J. 34. 532 (1993)
S.Ikeda、Y.Amano、S.Adachi-Akahane 和 T.Nagao:“与正常血压 Wistar 相比,( )[^3H]PN200-110 与自发性高血压大鼠 (SHR) 的主动脉和心脏膜的结合 -
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发表时间:
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作者: []
通讯作者:
S.Adachi-Akahane: "Binding sites for diltiazem is on the extracellular side of the L-type Ca^<2+>channel" Circulation(Supplement). 88. I-230 (1993)
S.Adachi-Akahane:“地尔硫卓的结合位点位于 L 型 Ca^2 通道的细胞外侧”循环(补充)。
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20
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