In 35 patients with essential hypertension,blood pressure,plasma glucose,C peptide and PRA,AII,Ald (RAAS)were measured before and after oral glucose tolerance test,and compared to normotensive controls(n=15).The results showed hyperinsulinemia,insulin resistance and increased reaction of the RAAS in the hypertensive group.The acute increases of blood pressure and RAAS,induced by glucose load,were higher in the hypertensives with insulin resistance than in the controls.So,hyperinsulinema with persistant incr...