Role of serotonin and nuclear factor-kappa B in the ameliorative effect of ginger on acetic acid-induced colitis
Abstract
The current study was designed to investigate the role of serotonin (5-HT) and nuclear factor-kappa beta (NF-κB) in the ameliorative effect of ginger on acetic acid (AA)-induced colitis rat model. Colitis was induced by intra-colonic instillation of 3% AA, preceded or followed by daily administration of ginger (400mg/kg) by gavage for 5 days. Colons were assessed macroscopically and microscopically and the expression of NF-κB was evaluated by immunohistochemistry. Colonic tumor necrosis factor-alpha (TNF-α), interleukin-10 (IL-10), total peroxide (TP), and serum 5-HT levels were assessed. Administration of ginger ameliorated the effects of AA-induced colitis by plummeting colon weight-to-length ratio, macroscopic and microscopic scores. These effects were further supported by down-regulation of NF-κB and reduction of colonic TNF-α, IL-10, TP and serum 5-HT levels. Moreover, there were significant positive correlations between serum 5-HT and macroscopic, microscopic, immunoreactivity scores and colonic TNF-α level. In conclusion, ginger ameliorated AA-induced colitis not only through its anti-inflammatory and anti-oxidant properties, but also through the reduction of 5-HT which may contribute to the down-regulation of NF-κB-depe...Continue Reading
References
T helper cell 1-type CD4+ T cells, but not B cells, mediate colitis in interleukin 10-deficient mice
Dietary agents and phytochemicals in the prevention and treatment of experimental ulcerative colitis
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