Curcumin represses the activity of inhibitor-κB kinase in dextran sulfate sodium-induced colitis by S-nitrosylation.

Abstract:

:In this study, we investigated the preventive effects of curcumin using dextran sulfate sodium (DSS)-induced colitis and the potential role of curcumin in regulation of anti-inflammation through S-nitrosylation. After curcumin treatment for 6days, the body weight and disease activity index of DSS-induced mice was alleviated and the colonic length was also rescued. Western blot presented that the protein expression of iNOS can be reduced by curcumin. Consistently, mRNA level of iNOS and pro-inflammatory cytokines, such as TNFα, IL-1β, and IL-6, was also repressed. Moreover, Curcumin reduced the amount of nitrite in DSS-induced colitis but not affected total S-nitrosylation level on proteins on day 6, indicating that curcumin inhibited NO oxidation. Furthermore, the protection of S-nitrosylation on IKKβ in DSS-induced colitis for 6days by curcumin caused the repression of IκB phosphorylation and NF-κB activation. In conclusion, this study verified that curcumin-mediated S-nitrosylation may be as an important regulator for anti-inflammation in DSS-induced colitis of mice.

journal_name

Int Immunopharmacol

authors

Kao NJ,Hu JY,Wu CS,Kong ZL

doi

10.1016/j.intimp.2016.05.015

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

1-7

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(16)30202-8

journal_volume

38

pub_type

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