ACE and atherosclerosis: More recently intravascularultrasound (IVUS) was used in a substudy of the CAMELOT trial, which compared theeffects of 3 different treatments on atherosclerosis progression: amlodipine,a calcium-antagonist, showed no progression; enalapril, an ACE inhibitor, a trendtoward progression, which was more evident in the placebo group [117].