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Voltage independence of vasomotion in isolated irideal arterioles of the rat

Haddock, Rebecca; Hirst, G D S; Hill, Caryl


The cellular mechanisms underlying vasomotion of irideal arterioles from juvenile rats have been studied ng electrophysiological methods, ratiometric calcium measurements and video microscopy. Vasomotion was not affected by removal of the endothellium. Spontaneous contractions were preceded by spontaneous depolarizations. Both were abolished by the intracellular calcium chelator, BAPTA AM (20 μM), but not by ryanodine (10 μM), suggesting a dependence on the cyclical release of calcium from...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Journal of Physiology
DOI: 10.1113/jphysiol.2001.013698


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