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Effect of anthocyanins on expression of matrix metalloproteinase-2 in naproxen-induced gastric ulcers

  • Sun-Joong Kim (a1), Young Sam Park (a1), Hyun-Dong Paik (a2) and Hyo Ihl Chang (a1)

Abstract

Non-steroidal anti-inflammatory drugs cause gastric ulceration through a number of mechanisms including inhibition of PG synthesis, generation of reactive oxygen species (ROS) and induction of apoptosis. Recently, matrix metalloproteinases (MMP) have been suggested to play a crucial role in these mechanisms. The present study investigated the protective effect of anthocyanins isolated from black rice bran (Heugjinjubyeo) against naproxen-induced gastric mucosal injury in rats. The oral administration of anthocyanins (5, 25 or 50 mg/kg body weight) showed significant protection against naproxen (80 mg/kg body weight)-induced gastric ulcer and inhibited lipid peroxidation in the gastric mucosa. In addition, pretreatment with anthocyanins resulted in a significant increase in the activities of radical-scavenging enzymes such as superoxide dismutase, catalase and glutathione peroxidase. Also biochemical and zymographic analyses suggested that the administration of anthocyanins gives a significant protection against naproxen-induced gastric antral ulcer through scavenging ROS and regulation of matrix metalloproteinase-2 (MMP-2) activity. The results of intracellular radical activation show that anthocyanins suppress the generation of intracellular ROS and attenuate the suppression of MMP-2 activity by naproxen. These results suggest that anthocyanins extracted from black rice may offer potential remedy of gastric antral ulceration.

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Copyright

Corresponding author

*Corresponding author: Dr Hyo Ihl Chang, fax +82 2 3290 3421, email hichang@korea.ac.kr

References

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Keywords

Effect of anthocyanins on expression of matrix metalloproteinase-2 in naproxen-induced gastric ulcers

  • Sun-Joong Kim (a1), Young Sam Park (a1), Hyun-Dong Paik (a2) and Hyo Ihl Chang (a1)

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