Release of the free nitric oxide radical (NO) and EDRF from endothelial cells

Kelm, M., Feelisch, Martin and Schrader, J. (1989) Release of the free nitric oxide radical (NO) and EDRF from endothelial cells. Zeitschrift für Kardiologie, 78, supplement 6, 70-74. (PMID:2618132).


Download (549Kb) | Preview


Release of nitric oxide (NO) from cultured macrovascular endothelial cells (EC) and from isolated perfused guinea pig hearts was measured with a specific spectrophotometric assay. Under basal conditions NO was continuously released from cultured cells and from isolated hearts into the coronary effluent perfusate. Bradykinin (10(-7) M) increased rate of NO release maximally two- to three-fold in both experimental models. Onset of NO release always preceded start of vasodilation (less than 15 s). Our results provide evidence that under basal and bradykinin-stimulated conditions. 1) endothelial cells release nitric oxide as a free radical, 2) NO is solely responsible for the vasodilatory properties of EDRF and, 3) under in vivo conditions the endogenous formation of NO is quantitatively sufficient to influence the coronary vascular tone and thus, may play an important role in the regulation of coronary vascular resistance.

Item Type: Article
ISSNs: 0300-5860 (print)
1435-1285 (electronic)
Subjects: Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
R Medicine > R Medicine (General)
Divisions : Faculty of Medicine > Clinical and Experimental Sciences
ePrint ID: 337918
Accepted Date and Publication Date:
Date Deposited: 14 Jun 2012 10:52
Last Modified: 31 Mar 2016 14:27

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics