The sensitivity of smooth muscle from aortas of spontaneously hypertensive rats (SHR), renal hypertensive rats: Two kidney-one clip and one kidney-one clip (2K 1C, 1K 1C) and DOCA salt hypertensive rats to the relaxant effect of nifedipine (NIF) was studied. A parallel leftward shift of the concentration-relaxation curve was detected in the K-precontracted aortic smooth muscle from hypertensive rats. This increased sensitivity seems to be related to the degree of hypertension and independent of the experimental method used to produce the high blood pressure level. No change in sensitivity was detected either in SHR or in renal hypertensive rats when mitroglycerin was used as a vasodilator.
- Arterial hypertension
- Nifedipine sensitivity
- Smooth muscle in hypertension
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine