- Prevention of diabetic vascular dysfunction by guanidines. Inhibition of nitric oxide synthase versus advanced glycation end-product formation. Tilton, R.G., Chang, K., Hasan, K.S., Smith, S.R., Petrash, J.M., Misko, T.P., Moore, W.M., Currie, M.G., Corbett, J.A., McDaniel, M.L. Diabetes (1993)