| Literature DB >> 4352870 |
Abstract
Botulinum toxin (Type A) depressed or abolished transmission from postganglionic nerves to smooth muscle of isolated preparations of guinea-pig and mouse vas deferens. The time course of blockade was 2 to 6 times slower than that observed with the same concentration of the same batch of toxin on the rat diaphragm. Spontaneous excitatory junction potentials were still observed after 7 h exposure, indicating that the smooth muscle membrane was still able to respond to noradrenaline. Depression of transmission is probably due to a presynaptic action of unknown nature.Entities:
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Year: 1973 PMID: 4352870 PMCID: PMC1776555 DOI: 10.1111/j.1476-5381.1973.tb08343.x
Source DB: PubMed Journal: Br J Pharmacol ISSN: 0007-1188 Impact factor: 8.739