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Updated: Dec 17, 2025

DNBS/TNBS Colitis Models: Providing Insights Into Inflammatory Bowel Disease and Effects of Dietary Fat
Published on: February 27, 2014
Cinnamyl Sulfonamide Hydroxamate Derivatives Inhibited LPS-Stimulated NF-kB Expression in RAW 264.7 Cells In Vitro
Mit Joshi1, Neetinkumar D Reddy1, Nitesh Kumar1
1Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka-576104, India.
Background:
Histone deacetylase (HDAC) inhibition has been found to be effective in the treatment of inflammatory bowel disease. Previous studies have reported that Cinnamyl sulfonamide hydroxamate derivatives possess non-selective HDAC inhibition.
Objective:
The present study was designed to screen three selected Cinnamyl sulfonamide hydroxamate derivatives, NMJ-1, NMJ-2, and NMJ3, for in vitro anti-inflammatory response by assessing the expression of pNF-κB in lipopolysaccharide (LPS)-induced inflammatory changes on RAW 264.7 cells, and in vivo anti-inflammatory response in acetic acid (AA) and 2.4-dinitrochlorobenzene (DNCB)-induced colitis models in Wistar rats.
Method:
AA-induced colitis was produced in Wistar rats by intra-colonic administration of 1 ml AA. DNCBinduced colitis was produced by spraying 250 μL DNCB in acetone (20g/L) on the nape of the rats for 14 days, followed by the intracolonic administration on day 15. Drugs were administered for three days after the induction of colitis.
Results:
In vitro anti-inflammatory effect was observed by NMJ1 and NMJ2 through a significant decrease in pNF-κB overexpression-induced by LPS. Similar effect was observed in anti-colitis response by NMJ2 in both models by reversing the colitis-induced changes in length, weight, anti-oxidant profile and histopathology of the colon.
Conclusion:
NMJ2 was found to be most effective among the tested compounds as an anti-inflammatory agent in both in vitro and in vivo inflammatory studies.
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