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endothelium-derived
(redirected from Endothelium-derived relaxing factor)

   Also found in: Wikipedia 0.07 sec.
endothelium-derived
derived from endothelium.

endothelium-derived vasoactive substances
substances produced by or released from endothelial cells which regulate vascular smooth muscle or other regulatory mechanism; include prostacyclin and other prostanoids, angiotensin, and relaxing or constricting factors.
endothelium-derived constricting factor
vasoconstrictive peptides isolated from vascular endothelial cells which are actively vasoconstrictive; endothelin (ET) is the most active of them.
endothelium-derived relaxing factor
several are known; nitrous oxide is one of the chief mediators, probably derived from l-arginine.


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? Mentioned in ? References in periodicals archive
 
These effects are counterbalanced by the pulmonary vascular endothelium's ability to release endothelium-derived relaxing factors (56), which includes nitric oxide (NO) (57,58) and prostacyclin (59).
The researchers speculate that people with healthy blood vessels react to epinephrine's vessel-constricting message by stepping up production of a natural, nitroglycerine-like substance called endothelium-derived relaxing factor (EDRF).
 
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