“Conclusions— Our results identify a novel mechanism by which NO can increase the efficacy of calcium , rising vasoactive agonists in the microvascular endothelium.”
“Functionally, the inhibition of gap junctional intercellular communication by NO decreased the spread of the calcium signal (induced by mechanical stimulation of individual endothelial cells) from endothelial to smooth muscle cells in intact vessels, while, at the same time, augmenting the calcium signal spreading within the endothelium.”