RT Journal Article SR Electronic T1 THE PHARMACOLOGICAL EFFECTS OF D- AND L-2-AMINOBUTYLISOTHI-URONIUM BROMIDE HYDROBROMIDE AND 3-AMINOPROPYL-N'-METHYL ISOTHIURONIUM BROMIDE HYDROBROMIDE IN THE CAT JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 304 OP 311 VO 126 IS 4 A1 DiStefano, Victor A1 Leary, Daniel E. YR 1959 UL http://jpet.aspetjournals.org/content/126/4/304.abstract AB l-ABT is a hypotensive agent; d-ABT produces a biphasic blood pressure response—a rise is followed by a fall. The rise results from epinephrine release. The exact mechanism for the hypotensive actions following d- and l-ABT is unknown. d- and l-ABT slow the heart slightly and decrease the amplitude of heart contractions. Suppression of nictitating membrane contractions evoked by postganglionic stimulation was noted following d- and l-ABT. These substances also blocked hypertension caused by stimulation of the hepatic nerve. d- and l-ABT potentiate muscle paralysis by d-tubocurarine. APMT produces moderate rises in blood pressure and occasionally some enhancement of gut activity. The significance of this relative lack of pharmacological response is discussed.