Postchallenge TNF-α, IL-6 and nitrotyrosine responses in (A) patients with different GT status or (B) patients with or without CAD, after 75 g-OGTT. Circulating levels of TNF-α, IL-6 and nitrotyrosine are consistently and time-dependently elevated within 2-hr after 75 g-OGTT. No significant differences of these cytokines levels among NGT, IGT or T2DM status are demonstrated. However, significant increases of TNF-α and nitrotyrosine, but not IL-6, could be demonstrated at 120 minutes after 75 g-OGTT in CAD patients in comparison with non-CAD patients. *P < 0.05.