Gastroprotective effect of kefir on ulcer induced in irradiated rats

J Photochem Photobiol B. 2015 Mar:144:85-93. doi: 10.1016/j.jphotobiol.2015.02.009. Epub 2015 Feb 18.


The current study was designed to investigate the protective effect of kefir milk on ethanol-induced gastric ulcers in γ-irradiated rats. The results of the present study revealed that treatment with γ-irradiation and/or ethanol showed a significant increase in ulcers number, total acidity, peptic, H(+)K(+)ATPase, MMP-2 and MMP-9 activities and MDA level, which were accompanied by a significant decrease in the mucus content, the stomach GSH level, the GSH-Px activity and DNA damage. Pre-treatment with kefir milk exert significant improvement in all the tested parameters. Kefir milk exerts comparable effect to that of the antiulcer drug ranitidine. In conclusion, the present study revealed that oral administration of kefir milk prevents ethanol-induced gastric ulcer in γ-irradiated rats that could attribute to its antioxidant, anti-apoptotic and radio-protective activities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants / metabolism
  • Cultured Milk Products*
  • Cytoprotection / drug effects*
  • DNA Fragmentation / drug effects
  • Ethanol / adverse effects
  • Female
  • Gamma Rays / adverse effects*
  • Gastric Mucosa / metabolism
  • H(+)-K(+)-Exchanging ATPase / metabolism
  • Matrix Metalloproteinase 2 / metabolism
  • Matrix Metalloproteinase 9 / metabolism
  • Mucins / metabolism
  • Rats
  • Rats, Wistar
  • Stomach / drug effects
  • Stomach / pathology
  • Stomach / radiation effects
  • Ulcer / etiology*
  • Ulcer / metabolism
  • Ulcer / pathology
  • Ulcer / prevention & control*


  • Antioxidants
  • Mucins
  • Ethanol
  • Matrix Metalloproteinase 2
  • Matrix Metalloproteinase 9
  • H(+)-K(+)-Exchanging ATPase