PMID: 139198Mar 1, 1977Paper

Characteristics of nondepolarizing neuromuscular block: (I) post-junctional block by alpha-bungarotoxin

Canadian Anaesthetists' Society Journal
C LeeR L Katz


The characteristics of neuromuscular block produced by alpha-bungarotoxin, a post-junctionally active polypeptide toxin purified from snake venoms, have been studied in vivo in 12 anaesthetized cats, using the sciatic nerve-tibialis anterior muscle preparation. The onset of the neuromuscular block was slow and without fasciculation. The block was persitently progressive. The time course of the block depended on the dosage. In general, 0.1 mg/kg of alpha-BuTX appeared to approximate the threshold dosage while 0.2 mg/kg completely eliminated the twitch response in 2-5 hours. No recovery was observed in 8-30 hours. Larger doses accelerated the progression of the block. During the block, tetanic contractions and train-of-four twitches did not fade. The post-tetanic twitches were markedly facilitated. The block was antagonized by edrophonium, neostigmine, pyridostigmine, and succinylcholine, but the antagonism was less effective and shorter-lasting than that observed on curare-block, and the block always resumed the projected progression. Attempts were made to explain the observed difference between alpha-BuTX- and dTc-induced neuromuscular blocks by the practically permanent nature of block and the purely post-junctional site of ac...Continue Reading

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Aug 17, 2020·Mohamed Tharwat Hegazy


Nov 1, 1976·British Journal of Anaesthesia·C LeeR L Katz
May 1, 1971·Anesthesiology·A Galindo
Oct 29, 1971·Nature·R Miledi, L T Potter
Nov 1, 1971·Proceedings of the Society for Experimental Biology and Medicine·S D GergisJ P Long
Jan 1, 1972·Annual Review of Pharmacology·R D O'BrienA T Eldefrawi
Jan 1, 1972·Annual Review of Pharmacology·C Y Lee
Jun 1, 1972·Anesthesiology·M D SokollJ P Long
Nov 1, 1970·British Journal of Anaesthesia·H H AliC Gray
Jul 1, 1969·The Journal of Physiology·J Rosenthal
Nov 1, 1966·British Journal of Pharmacology and Chemotherapy·C C Chang, C Y Lee
May 28, 1954·The Journal of Physiology·W W DOUGLAS, W D PATON
Jun 1, 1958·British Journal of Pharmacology and Chemotherapy·L WISLICKI
Jun 1, 1961·Acta Physiologica Scandinavica·G LILLEHEIL, K NAESS
May 1, 1964·The Journal of General Physiology·F G STANDAERT
Jul 5, 1915·The Journal of Physiology·J N Langley, T Kato
Jan 1, 1949·Journal of Neurophysiology·J C ECCLES, W V MacFARLANE

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