PMID: 9448326Mar 14, 1998Paper

Aminoguanidine prevents age-related arterial stiffening and cardiac hypertrophy

Proceedings of the National Academy of Sciences of the United States of America
B CormanB I Lévy

Abstract

Aging is associated with cardiac hypertrophy and arterial stiffening possibly associated with accumulation of advanced glycation end products (AGEs). We evaluated the effect of aminoguanidine, an inhibitor of AGE production, on end-stage alterations of renal and cardiovascular systems. Normotensive WAG/Rij rats were treated from 24 to 30 mo with aminoguanidine and compared with a control group. Aminoguanidine did not modify body and kidney weights but prevented the age-related cardiac hypertrophy (heart weight: 1276 +/- 28 mg and 1896 +/- 87 mg in 24- and 30-mo-old control animals and 1267 +/- 60 mg in 30-mo-old treated rats, P < 0.01). The increase in mesangial surface in aging rats was reduced by 30% by aminoguanidine. Collagen content of the arterial wall increased between 24 and 30 mo whereas elastin content, media thickness, and smooth muscle cell number remained unchanged. Aminoguanidine did not affect these parameters; however, the age-related increase in aortic impedance (12.4 +/- 1.4 and 18.2 +/- 1.9 10(3).dyne.sec.cm-5 in control 24- and 30-mo-old rats, P < 0.01) and the decrease in carotid distensibility (0.79 +/- 0.11 and 0.34 +/- 0. 07 mm Hg-1 in control 24- and 30-mo-old rats, P < 0.01) were prevented by aminoguan...Continue Reading

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