Effects of Onosma armeniacum root extract on ethanol-induced oxidative stress in stomach tissue of rats.

Cadirci E. , Suleyman H. , Aksoy H., Halici Z. , Ozgen U. , KOC A., ...More

Chemico-biological interactions, vol.170, no.1, pp.40-8, 2007 (Journal Indexed in SCI Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 170 Issue: 1
  • Publication Date: 2007
  • Doi Number: 10.1016/j.cbi.2007.06.040
  • Title of Journal : Chemico-biological interactions
  • Page Numbers: pp.40-8


This study investigated the effects of Onosma armeniacum K. (Boraginaceae) root extract (AR-1) on ethanol-induced stomach ulcers, and on some oxidant and antioxidant parameters, in stomach tissue in rats. The results obtained showed that AR-1 significantly inhibited ethanol-induced ulcers at 25, 50, 100 and 200 mg/kg doses. We found that 50, 100 and 200 mg/kg doses of AR-1 inhibited ulcers more effectively than did ranitidine. AR-1 at doses of 25, 50, 100 and 200mg/kg significantly prevented the decrease in total glutathione (tGSH) level which occurs in damaged stomach tissues of rats given ethanol (control group). Only a 100 mg/kg dose of AR-1 significantly increased the glutathione S-transferase (GST) level in stomach tissue compared to the control. All doses of AR-1 except the 25 mg/kg dose eliminated the decrease in the superoxide dismutase (SOD) level in the stomach tissue of rats given ethanol. While all doses of AR-1 decreased malondialdehyde (MDA) levels significantly; all doses AR-1 except 25 mg/kg decreased myeloperoxidase (MPO) levels significantly compared to the control. The effect of AR-1 on catalase (CAT) activity was insignificant at all doses. AR-1 significantly increased nitric oxide (NO) levels at 50, 100 and 200 mg/kg doses compared to the control. Our results indicate that the protection of some antioxidant mechanisms and the inhibition of some oxidant mechanisms have a role in AR-1's antiulcer effect mechanism. (C) 2007 Elsevier Ireland Ltd. All rights reserved.