Use of Sildenafil (Viagra) in Diabetic Men With Erectile Dysfunction: the Impact on Blood Vessels

Summary

* To evaluate the impact of nightly sildenafil vs placebo use on diabetic men with and without proven endothelial dysfunction and coexisting erectile concerns. * To determine if chronic sildenafil use compared to placebo positively impacts endothelial function among a cohort of diabetic mend with erectile dysfunction * To assess the salvage rate of sildenafil - failures who demonstrate improved response rates over time with chronic use * To assess if microalbuminuria predicts flow-mediated dilation (FMD) response * To measure and identify if other patient specific characteristics predict for sildenafil erectile response and flow-mediated dilatation (FMD) response over time (patient specifics; blood pressure, HBA1c, weight, BMI, age IIEF score at baseline)

Timeline

Start

2004-08

Primary completion

2007-10

Completion

2007-12

Publications

• Results Yu HI, Sheu WH, Lai CJ, Lee WJ, Chen YT. Endothelial dysfunction in type 2 diabetes mellitus subjects with peripheral artery disease. Int J Cardiol. 2001 Mar;78(1):19-25. doi: 10.1016/s0167-5273(00)00423-x.
• Results De Angelis L, Marfella MA, Siniscalchi M, Marino L, Nappo F, Giugliano F, De Lucia D, Giugliano D. Erectile and endothelial dysfunction in Type II diabetes: a possible link. Diabetologia. 2001 Sep;44(9):1155-60. doi: 10.1007/s001250100616.
• Results Feldt-Rasmussen B. Microalbuminuria, endothelial dysfunction and cardiovascular risk. Diabetes Metab. 2000 Jul;26 Suppl 4:64-6.
• Results Desouza C, Parulkar A, Lumpkin D, Akers D, Fonseca VA. Acute and prolonged effects of sildenafil on brachial artery flow-mediated dilatation in type 2 diabetes. Diabetes Care. 2002 Aug;25(8):1336-9. doi: 10.2337/diacare.25.8.1336.
• Results Dishy V, Sofowora G, Harris PA, Kandcer M, Zhan F, Wood AJ, Stein CM. The effect of sildenafil on nitric oxide-mediated vasodilation in healthy men. Clin Pharmacol Ther. 2001 Sep;70(3):270-9. doi: 10.1067/mcp.2001.117995.
• Results Katz SD, Balidemaj K, Homma S, Wu H, Wang J, Maybaum S. Acute type 5 phosphodiesterase inhibition with sildenafil enhances flow-mediated vasodilation in patients with chronic heart failure. J Am Coll Cardiol. 2000 Sep;36(3):845-51. doi: 10.1016/s0735-1097(00)00790-7.

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Indications