Home General Physiology and Biophysics 2009 General Physiology and Biophysics Vol.28, No.4, p.347–355, 2009

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Quarterly, 80 pp. per issue
Founded: 1982
ISSN  1338-4325 (online)

Published in English

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General Physiology and Biophysics Vol.28, No.4, p.347–355, 2009

Title: Influence of pyridoxylidene aminoguanidine on biomarkers of the oxidative stress and selected metabolic parameters of rats with diabetes mellitus
Author: Zuzana Országhová, Anna Liptáková, Jana Muchová, Oľga Uličná, Oľga Vančová, Monika Sivoňová, Peter Božek, Jozef Čársky and Zdeňka Ďuračková

Abstract: Oxidative damage is considered to play an important role in the pathogenesis of several diseases, such as diabetes mellitus (DM), atherosclerosis, cardiovascular complications and chronic renal failure. DM is associated with the oxidative stress and formation of advanced glycation end products (AGEs). Different drugs inhibit oxidative stress and formation of advanced glycation end products. Aminoguanidine (AG) has been proposed as a drug of potential benefit in prophylaxis of the complications of DM. Recent reports show a pro-oxidant activity of AG. Therefore we examined the effect of structural analogue of AG, its Schiff base with pyridoxal – pyridoxylidene aminoguanidine (PAG) on the level of selected markers of oxidative stress. We found that PAG decreased total damage to DNA in controls as well as in diabetic group of rats. However, we also found that PAG supplementation increases susceptibility of lipoproteins to oxidation and formation of conjugated dienes in both, diabetic as well as control animals. Its administration to diabetic rats decreases antioxidant capacity of plasma. Therefore, it is necessary to search for other structural modifications of AG that would combine its higher anti-diabetic activity with less toxicity.

Keywords: Oxidative stress — Free radicals — Diabetes mellitus — Pyridoxylidene aminoguanidine
Year: 2009, Volume: 28, Issue: 4 Page From: 347, Page To: 355

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