Aminoguanidine treatment increases elasticity and decreases fluid filtration of large arteries from diabetic rats.
J Clin Invest
; 92(3): 1407-11, 1993 Sep.
Article
em En
| MEDLINE
| ID: mdl-8376593
ABSTRACT
The accumulation of advanced glycosylation end-products (AGEs) on collagen and the subsequent stiffening of this matrix protein in diabetes has been described many years ago. Structural modification of collagen in the arterial wall might have important effects on arterial elasticity. Aminoguanidine is known to decrease the formation of AGEs. In this study we evaluated the effects of aminoguanidine treatment on different parameters reflecting arterial wall elasticity in diabetic rats. We demonstrated that treatment of diabetic rats with aminoguanidine resulted in a significant increase in carotid static compliance (+39%, P < 0.01 under control conditions, and +27%, P < 0.01 after abolition of vascular tone by KCN), and a decrease in characteristic aortic input impedance (-40%, P < 0.01). The arterial pulse pressure in aminoguanidine-treated rats was decreased (-15%, P < 0.05) and the pulsatile component of left ventricular power output was relatively diminished (-35%, P < 0.05). In addition, we observed a lower fluid filtration across the carotid wall. These results indicate an increased vascular elasticity, an improved left ventricular-arterial coupling, and a decreased vascular permeability in diabetic rats after aminoguanidine treatment, suggesting that AGE-accumulation on collagen negatively affects arterial wall properties in experimental diabetes.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Resistência Vascular
/
Diabetes Mellitus Experimental
/
Guanidinas
Limite:
Animals
Idioma:
En
Revista:
J Clin Invest
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Holanda