Skip to main content
. 2002 Dec 1;110(11):1729–1738. doi: 10.1172/JCI15481

Figure 5.

Figure 5

Nontranscriptional activation of eNOS by high-dose corticosteroids. (a) Shown are cGMP levels in human ECs after dexamethasone treatment. The upper panel shows cGMP levels in HUVECs stimulated with S-nitrosoglutathione (GSNO, 300 μM) or dexamethasone (100 nM) with or without LY294002 (LY, 30 μM) or L-NAME (1 mM, n = 4). The lower panel shows cGMP levels in HAECs stimulated with dexamethasone with or without LY294002 (n = 4). Ctrl, control. *P < 0.05 vs. control. GSNO, S-nitrosoglutathione; LY, LY294002. (b) Effects of 100 nM of dexamethasone, prednisolone, hydrocortisone, or triamcinolone acetonide on eNOS activity in HUVECs (n = 2). Pred, prednisolone; HC, hydrocortisone; TA, triamcinolone acetonide. (c) Dose–response effects of dexamethasone on eNOS activity (HUVECs, n = 5) and GRE-luciferase activity (bovine aortic endothelial cells transfected with pGRE-luc, n = 6). *P < 0.01 vs. control. (d) Dexamethasone serum levels in mice after intraperitoneal bolus administration of low- and high-dose dexamethasone.