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Abstract Title:

Resveratrol and piceatannol inhibit iNOS expression and NF-kappaB activation in dextran sulfate sodium-induced mouse colitis.

Abstract Source:

Nutr Cancer. 2009;61(6):847-54. PMID: 20155626

Abstract Author(s):

Jin Youn, Jeong-Sang Lee, Hye-Kyung Na, Joydeb Kumar Kundu, Young-Joon Surh

Article Affiliation:

Seoul National University, Seoul, South Korea.

Abstract:

Inflammatory tissue injury has been implicated in tumor promotion and progression. 3,5,4'-trihydroxy-trans-stilbene (resveratrol) and 3,4,3', 5'-tetrahydroxy-trans-stilbene (piceatannol), 2 structurally related plant polyphenols, have been reported to possess antioxidant, anti-inflammatory, and chemopreventive properties. This study was aimed at investigating the possible protective effects of resveratrol and piceatannol against dextran sulfate sodium (DSS)-induced inflammation in mouse colonic mucosa. Administration of DSS (2.5%) in drinking water for 7 days to male ICR mice resulted in colitis and elevated expression of inducible nitric oxide synthase (iNOS) and activation of nuclear factor-kappa B (NF-kappaB), a major transcription factor known to upregulate proinflammatory gene expression. Phosphorylation of extracellular signal-regulated kinase (ERK) and signal transducer and activator of transcription-3 (STAT3) was also enhanced after DSS treatment. Oral administration of resveratrol or piceatannol (10 mg/kg body weight each) for 7 constitutive days attenuated the DSS-induced inflammatory injury, upregulation of iNOS expression, and activation of NF-kappaB, STAT3, and ERK.

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Sayer Ji
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