Abstract：
AIM:The aim of the present study was to evaluate the anti-inflammatory effect of thymol in acetic acid-induced rat colitis through inhibiting the NF-κB signaling pathway. METHODS:Colitis was induced by intra-rectal administration of 2 mL of diluted acetic acid (4%) solution using a flexible plastic rubber catheter in Wistar rats. Colitis was induced on the first day and all treatments were applied 5 days after the induction of colitis. Thymol was dissolved in 0.2% tween 80 in saline and administered orally at doses of 10, 30, and 100 mg/kg per day. Macroscopic and histopathologic investigations were done. The expression of myeloperoxidase (MPO) and tumor necrosis factor-α (TNF-α) was determined by immunohistochemistry (IHC) assay. The protein expression level of pNF-κB p65 was measured by the Western blot technique. RESULTS:Treatment with thymol reduced mucosal and histological damages compared to the acetic acid group. Our results showed that thymol markedly inhibited the production of MPO and TNF-α in the colon tissue of the acetic acid-induced group. In addition, thymol decreased acetic acid-induced up-regulation of pNFκB p65 protein. CONCLUSIONS:The results of our study suggest that thymol exerts an anti-inflammatory effect in acetic acid-induced rat colitis by inhibiting the NF-κB signaling pathway and downregulating TNF-α and MPO expressions.
journal_name
Inflammopharmacologyjournal_title
Inflammopharmacologyauthors
Chamanara M,Abdollahi A,Rezayat SM,Ghazi-Khansari M,Dehpour A,Nassireslami E,Rashidian Adoi
10.1007/s10787-019-00583-8subject
Has Abstractpub_date
2019-12-01 00:00:00pages
1275-1283issue
6eissn
0925-4692issn
1568-5608pii
10.1007/s10787-019-00583-8journal_volume
27pub_type
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