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Influence of pyridoxylidene aminoguanidine on biomarkers of the oxidative stress and selected metabolic parameters of rats with diabetes mellitus.

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.
AuthorsZuzana Országhová, Anna Liptáková, Jana Muchová, Ol'ga Ulicná, Ol'ga Vancová, Monika Sivonová, Peter Bozek, Jozef Cársky, Zdenka Duracková
JournalGeneral physiology and biophysics (Gen Physiol Biophys) Vol. 28 Issue 4 Pg. 347-55 (Dec 2009) ISSN: 0231-5882 [Print] Slovakia
PMID20097957 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Aldehydes
  • Antioxidants
  • Biomarkers
  • Guanidines
  • Lipoproteins
  • pyridoxylidene aminoguanidine
  • Water
  • Pyridoxal
  • Malondialdehyde
  • 4-hydroxy-2-nonenal
  • pimagedine
Topics
  • Aldehydes (metabolism)
  • Animals
  • Antioxidants (metabolism)
  • Biomarkers (blood, metabolism)
  • DNA Damage
  • Diabetes Mellitus (blood, chemically induced, enzymology, metabolism)
  • Guanidines (administration & dosage, chemistry, pharmacology)
  • Lipoproteins (metabolism)
  • Male
  • Malondialdehyde (metabolism)
  • Oxidation-Reduction
  • Oxidative Stress (drug effects)
  • Pyridoxal (administration & dosage, chemistry, pharmacology)
  • Rats
  • Rats, Wistar
  • Solubility
  • Water (chemistry)

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