[Effect of ACTH on the relaxation of guinea pig trachea with various bronchodilators (author's transl)].
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Biomedical subjects
Publications and source records attributed to Y Ishihara.
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The effect of ACTH on the actions of various bronchodilators was examined using the isolated guinea pig tracheal smooth muscle. Relaxing effects of isolated guinea pig tracheal smooth muscle with 1-isoproterenol hydrochloride, salbutamol hemisulfate, hexoprenaline hydrochloride and epinephrine except prostaglandin E2 and aminophylline were markedly potentiated by combining ACTH. These results may suggest that ACTH has a direct effect on guinea pig tracheal smooth muscle by potentiating the actions of various beta-receptor stimulators.
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Radioimmunoassay of 5alpha, 7alpha-dihydroxy-11-keto-tetranor-prosta-1,16-dioic acid, main urinary metabolite of prostaglandin F2alpha (PGF2alpha-MUM), was performed in normal subjects. Twenty-four hours secretion of PGF2alpha-MUM were 29.04 +/- 9.73 microgram in males and 18.22 +/- 5.88 microgram in females on an average. And an oral administration of aspirin resulted in the remarkable decrease of PGF2alpha-MUM in both sexes.