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AI InsightTreatmentwith XA also significantly (p<0.0001) increased the activity of SOD, CAT, and APx while it decreased the activity of MPO and MDA levels.Conclusion: Xylopic acid possesses anti-colitic activity in rats induced with acetic acid colitis.
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Background/Aims: Xylopic acid (XA) has been reported to exhibit analgesic activity, alleviate neuropathic pain in rodents, and demonstrate anti-inflammatory effects. Intrarectal challenge of rats with acetic acid induces colitis that bears resemblance in terms of itspathogenesis, histopathology, and inflammatory profile to that in humans. Reactive oxygen species are implicated as the main drivingforce in this inflammatory bowel disease. This study aimed to investigate the anti-colitic potential of XA.Materials and Methods: We investigated the effect of XA on body weight, disease activity, inflammatory cell infiltration, and generationof reactive oxygen species. Rats were treated with XA or sulphasalazine, challenged intrarectally with acetic acid with macroscopic andmicroscopic findings made after eight days.Results: Administration of XA to rats with colitis resulted in an increase in body weight with significant (p<0.05) improvement of thedisease profile macroscopically. We observed decreased gross mucosal injury, reduced inflammation, and cellular proliferation with XAadministration. Treatment with XA also resulted in decreased colonic epithelial expression of argyrophylic nucleolar organizer regions(AgNORs) with significant decrease (p<0.0001) in the quantitative expression of AgNORs/nucleus ratio to levels comparable with noncolitic control. We also observed reduced proliferation of mucosal mast cell in the colonic segment of the rats treated with XA. Treatmentwith XA also significantly (p<0.0001) increased the activity of SOD, CAT, and APx while it decreased the activity of MPO and MDA levels.Conclusion: Xylopic acid possesses anti-colitic activity in rats induced with acetic acid colitis.