Fig. 7
PUE ameliorated Ca2+-induced constriction with the similar role as SKF. A Representative original tracings of NE-reactivity curves of WKY rats, SKF could obviously inhibit the decrease of outer diameter of carotid rings induced by increasing extracellular Ca2+. B Representative original tracings of NE-reactivity curves of SHR rats incubated with 10− 3 M PUE, PUE played the similar role as SKF. C Representative original tracings of NE-reactivity curves of SHR fed with 40 mg/kg/d of PUE. D Representative original tracings of NE-reactivity curves of SHR fed with 80 mg/kg/d of PUE; SKF has no obvious effect on inhibition the outer diameter decrease induced by increasing extracellular Ca2+