Takafumi Ishihara
Kumamoto University
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Featured researches published by Takafumi Ishihara.
Peripheral Dopaminergic Receptors#R##N#Proceedings of the Satellite Symposium of the 7th International Congress of Pharmacology, Strasbourg, 24–25 July 1978 | 1979
Fumio Takenaka; Matao Sakanashi; Takafumi Ishihara; H. Morishita
ABSTRACT The purpose of the present study was to analyse the mechanisms of action of dopamine on the coronary circulation. Dopamine increased coronary blood flow in anesthetized dogs. The increase was not abolished by propranolol but enhanced by phentolamine. The dopamine-induced coronary vasodilatation under alpha and beta adrenoceptor blockade was significantly attenuated by haloperidol which did not affect the coronary vasodilator action of acetylcholine, adenosine and papaverine. When treated with indomethacin after both alpha and beta blockade the dopamine-induced increase in coronary blood flow was strongly inhibited. It was considered that dopamine stimulated alpha and beta adrenoceptors, and specific receptors as well in the coronary arteries. A possible involvement of prostaglandin El in the regulation of coronary circulation was also suggested.
Japanese Journal of Pharmacology | 1970
Fumio Takenaka; Norihide Takeya; Takafumi Ishihara; Shiro Inoue; Etsuro Tsutsumi; Ryoichi Nakamura; Yutaka Mitsufuji; Masaaki Sumie
Planta Medica | 1985
Kazuo Aisaka; Yoshikazu Hattori; Tetsuro Kihara; Takafumi Ishihara; Katsuya Endo; Hiroshi Hikino
Japanese Journal of Pharmacology | 1987
Tomochika Ohno; Hiroshi Uramoto; Takafumi Ishihara; Susumu Okabe
Japanese Journal of Pharmacology | 1987
Tomochika Ohno; Nakako Hirose; Hiroshi Uramoto; Takafumi Ishihara; Susumu Okabe
Planta Medica | 1984
Hiroshi Hikino; Yoshinobu Kiso; Minoru Ogata; Chohachi Konno; Kazuo Aisaka; Hiroaki Kubota; Nakako Hirose; Takafumi Ishihara
Japanese Heart Journal | 1971
Fumio Takenaka; Takafumi Ishihara
Folia Pharmacologica Japonica | 1975
Fumio Takenaka; Shigeyuki Shintani; Takafumi Ishihara; Makie Higuchi; Ichiya Hiraki
Folia Pharmacologica Japonica | 1974
Fumio Takenaka; Takafumi Ishihara; Maruyama Y; Matsumoto S; Inoue H
Japanese Journal of Pharmacology | 1972
Fumio Takenaka; Takafumi Ishihara