ABSTRACT
In experiments on cats it has been shown that 2 beta, 16 beta-bis (4'-dimethyl-1'-piperazino)-3 alpha, 17 beta-diacetoxy-5 alpha-androstane dibromide (pipecurium bromide, RGH-1106, Arduan), is a non-depolarizing muscular blocker. The order of myorelaxation evoked by this agent is characteristic: first the chewing and limb muscles, then abdominal muscles and diaphragm and at the end intercostal muscles are relaxed. Pipercurium bromide has no cardiotropic, atropine-like, or ganglion-blocking activity. It fails to influence the coronary blood-supply or myocardial oxygen consumption. No acetylcholinesterase inhibiting action of the compound was seen. It does not affect the central nervous system.
Subject(s)
Androstane-3,17-diol/pharmacology , Androstanols/pharmacology , Neuromuscular Blocking Agents/pharmacology , Piperazines/pharmacology , Androstane-3,17-diol/analogs & derivatives , Animals , Cats , Coronary Circulation/drug effects , Electromyography , Evoked Potentials/drug effects , Muscle Relaxants, Central , Muscles/drug effects , Pancuronium/pharmacology , Pipecuronium , Receptors, Cholinergic/drug effects , Synapses/drug effects , Synaptic Transmission/drug effectsABSTRACT
Tests on cats showed the compound RGH 1106 to possess an antidepolarizing mechanism of action. The sequence of myorelaxation, arising under the effect of this agent, is characterized by relaxation in the first place of the musculus masseter, muscles of limbs, then of abdominal muscles and those of the diaphragm and, finally, of the intercostal muscles. RGH 1106 doses not possess cardiotropic m-cholinolytic action, does not exert a ganglion blocking effect, nor affects the central nervous system. It neither changes the blood supply of the myocardium and the uptake of oxygen by the latter, nor inhibits the acetylcholinesterase.
