Click on image to view larger version.

Figure 2 Correlation between percent changes in left anterior descending artery (LAD) diameters from baseline values in response to intracoronary infusion of 100 µg acetylcholine (ACh) and 2-h insulin area, plasma lipid hydroperoxide (TBARS) level of coronary sinus-arterial (CS-Ao) difference, BH₄/7,8-BH₂ + biopterin, and dihydropteridine reductase (DHPR) activity in study subjects (n = 36). BH₄ = tetrahydrobiopterin; BH₂ = dihydrobiopterin.