Effect of gliclazide on DNA damage in human peripheral blood lymphocytes and insulinoma mouse cells.

Abstract

Type 2 diabetes mellitus is associated with increased oxidative stress. Free radicals produced during this stress may damage various cellular components. Gliclazide, a second-generation sulfonylurea, is an oral hypoglycemic drug that possesses antioxidant properties. Therefore, gliclazide may diminish the harmful consequences of oxidative stress in diabetic patients. The aim of our study was to evaluate the action of gliclazide on DNA damage and repair in normal human peripheral blood lymphocytes and insulinoma mouse cells (beta-TC-6). DNA damage and repair were induced by hydrogen peroxide, gamma and ultraviolet radiation and MNNG (N-methyl-N'-nitro-N-nitrosoguanidine) in the presence or absence of gliclazide and were analysed by the alkaline comet assay. DNA double-strand breaks were assayed by pulsed-field gel electrophoresis. Gliclazide protected DNA of both kinds of cells from DNA damage induced by chemicals and radiations. These results suggest that gliclazide may diminish the risk of free radical-related diseases associated with type 2 diabetes mellitus and possibly cancer.

• Authors: A Sliwinska, J Blasiak, J Drzewoski
• Journal: Chemico-biological interactions (Chem Biol Interact) Vol. 162 Issue 3 Pg. 259-67 (Sep 25 2006) ISSN: 0009-2797 [Print] Ireland
• PMID: 16963009 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Hypoglycemic Agents
• DNA
• Gliclazide

Topics

• Animals
• Cell Survival (drug effects)
• Cells, Cultured
• Comet Assay
• DNA (metabolism)
• DNA Damage (drug effects)
• DNA Repair (drug effects)
• Electrophoresis, Gel, Pulsed-Field
• Gliclazide (pharmacology)
• Humans
• Hypoglycemic Agents (pharmacology)
• Insulinoma (pathology)
• Lymphocytes (blood, drug effects)
• Mice
• Time Factors