CALCA and hypertensive disorder: CGRP could work as an endogenous protective substance to counteract endothelial progenitor cells senescence in hypertension and the accelerated endothelial progenitor cells senescence in hypertension is related to the reduction of CGRP while Rut could reverse endothelial progenitor cell senescence along with an elevation in CGRP production in SHR and reverse angiotensin II-induced CGRP mRNA expression in endothelial progenitor cells [52].