Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Vascular relaxation and cyclic guanosine monophosphate in hypertension

Conference · · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)
OSTI ID:5506664
Isolated aortae from hypertensive rats have a decreased relaxation response to acetylcholine (Ach), A23187, and nitroprusside (SNP). Since cyclic guanosine monophosphate (cGMP) has been shown to increase in response to these vasodilators, the authors measured cGMP in response to these agents in isolated aortae from normotensive rats and DOCA, 1K1C, and coarctation induced hypertension. cGMP was measured by radioimmunoassay in vessels after exposure to phenylephrine followed by either Ach, A23187, or SNP. The aortae from the hypertensive rats had decreased basal levels of cGMP and attenuated increases in cGMP in response to Ach and A23187. Rises in cGMP in response to SNP were also attenuated in aortae from the hypertensive rats, even at concentrations which induced similar relaxation in normotensive and hypertensive blood vessels. The data suggest that changes in cGMP do not necessarily reflect changes in endothelium independent vascular relaxation in hypertension.
Research Organization:
Henry Ford Hospital, Detroit, MI
OSTI ID:
5506664
Report Number(s):
CONF-8604222-
Conference Information:
Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Journal Volume: 45:3
Country of Publication:
United States
Language:
English