Journal
MEDCHEMCOMM
Volume 9, Issue 8, Pages 1305-1310Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8md00156a
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Funding
- Korean Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea [HI15C0542]
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Inflammatory bowel disease (IBD) is an inflammatory disease of the gastrointestinal tract with complex pathogenesis. Here, we synthesized 6-heteroarylamino analogues to inhibit TNF-alpha-induced adhesion of monocytes to colon epithelial cells which are implicated in the initial inflammation process of IBD. The best analogue, 16a, showed IC50 = 0.29 mu M, which is about five orders of magnitude better than that of 5-aminosalicylic acid (5-ASA), a positive control. Oral administration of 6f and 16a dramatically ameliorated 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colon inflammation in rat. The ameliorating effects were accompanied by a high level of recovery in colon and body weights and in the myeloperoxidase (MPO) level. Consistently, the compounds suppressed the expression of intercellular adhesion molecule-1 (ICAM-1) and monocyte chemoattractant protein 1 (MCP-1). Moreover, they significantly suppressed the expression of pro-inflammatory cytokines such as TNF-alpha, IL-1 beta, and IL-6 while increasing the level of IL-10, an anti-inflammatory cytokine.
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