Time course studies of the ability of different ARBs to
persistently block angiotensin II binding to AT1
receptors
after drug washout have also indicated that azilsartan dissociates
from AT1
receptors more slowly than other ARBs
including olmesartan, telmisartan, and valsartan (Figure 4).42
These findings are consistent with separate studies conducted
before and after drug washout indicating that azilsartan is
more effective than other ARBs such as olmesartan or valsartan
in persistently inhibiting angiotensin II-induced increases
in BP,43 contraction of aortic vascular strips,42 cellular accumulation
of inositol 1-phosphate,42 or activation of mitogen
activated protein kinase (MAPK) in smooth muscle