Increased susceptibility of angiographically smooth left anterior descending coronary artery to an impairment of vasoresponse to acetylcholine, and the relation between impaired vasoresponse and low-density lipoprotein cholesterol level

In the present study, we demonstrated that the angiographically smooth LAD is more susceptible than the LC to an impairment of vasoresponse to acetylcholine, suggesting the more severe endothelial dysfunction in the LAD. We also showed that levels of LDL play a partial but important role on endothelial dysfunction.