Effects of L-765,314, a Selective and Potent α_<1B>-Adrenoceptor Antagonist, on Periarterial Nerve Electrical Stimulation-Induced Double-Peaked Constrictor Responses in Isolated Dog Splenic Arteries
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概要
- 論文の詳細を見る
The periarterial nerve electrical stimulation (PNS) at a frequency of 1 or 4 Hz (30-s trains of pulses) readily caused a double peaked vasoconstriction in the canine splenic artery. The treatment with 1 μM L-765,314, a selective and potent α1B-adrenoceptor antagonist, markedly inhibited the second peaked constriction, whereas it did not modify the vasoconstrictor responses to exogenous noradrenaline (0.03 – 1 nmol) and A61603 (1 – 30 pmol), a selective α1A-agonist. A large dose of 10 μM L-765,314 significantly blocked exogenous noradrenaline- and A61603-induced responses. It is concluded that PNS-induced responses are mediated via the postjunctional α1B-adrenoceptor subtype.
- 社団法人 日本薬理学会の論文
- 2002-08-01
著者
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Chiba Shigetoshi
Department Of Molecular Pharmacology Shinshu University School Of Medicine
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Yang Xiao-ping
Departmen T Of Pharmacology Shinshu University School Of Medicine
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Chiba Shigetoshi
Departmen T Of Pharmacology Shinshu University School Of Medicine
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