抄録
1) Some pharmacological actions of histidine were investigated. 2) The adrenalin-sensitization by histidine was shown only in the perfused blood vessel of rabbit ear. 3) The negative dose of histidine had influence upon the adrenaline determination by silicomolybdic acid. 4) Not only antagonism but also synergism between histidine and acetylcholine were demonstrated in the excised intestine of rabbit. 5) Histidine (1/500-1/1000 mol) had no influence on cholinesterase, histaminase and amine oxidase. 6) Using the Folin-Wu method, the determination of histidine by adrenaline was confirmed. 7) In alkaline medium histidine accelerated the adrenaline oxidation.
