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- W4307205 abstract "AIM: To investigate the ameliorative effects of sodium ferulate (SF) on acetic acid-induced colitis and their mechanisms in rats.METHODS: The colitis model of Sprague-Dawley rats was induced by intracolon enema with 8 % (WV) of acetic acid.The experimental animals were randomly divided into model control, 5-aminosalicylic acid therapy group and three dose of SF therapy groups. The 5 groups were treated intracolonically and daily (8:00 am) for 7 days 24 h following the induction of colitis. A normal control group of rats clystered with normal saline instead of acetic acid was also included in the study.Pathological changes of the colonic mucosa were evaluated by the colon mucosa damage index (CMDI) and the histopathological score (HS). The insulted colonic mucosa was sampled for a variety of determinations at the end of experiment when the animals were sacrificed by decapitation.Colonic activities of myeloperoxidase (MPO) and superoxide dismutase (SOD), and levels of malondialdehyde (MDA)and nitric oxide (NO) were assayed with ultraviolet spectrophotometry. Colonic contents of prostaglandin E2 (PGE2) and thromboxane B2 (TXB2)were determined by radioimmunoassay. The expressions of inducible nitric oxide synthase (iNOS), cyclo-oxygenase-2 (COX-2) and nuclear factor kappa B (NF-κB) p65 proteins in the colonic tissue were detected with immunohistochemistry.RESULTS: Enhanced colonic mucosal injury, inflammatory response and oxidative stress were observed in the animals clystered with acetic acid, which manifested as the significant increase of CMDI, HS, MPO activities, MDA and NO levels,PGE2 and TXB2 contents, as well as the expressions of iNOS,COX-2 and NF-κB p65 proteins in the colonic mucosa,although the colonic SOD activity was significantly decreased compared with the normal control (CMDI: 2.9±0.6 vs0.0±0.0;HS: 4.3±0.9 vs0.7±1.1; MPO: 98.1±26.9 vs24.8±11.5; MDA:57.53±12.36 vs9.21±3.85; NO: 0.331±0.092 vs0.176±0.045;PGE2: 186.2±96.2 vs 42.8±32.8; TXB2: 34.26±13.51 vs 8.83±3.75; iNOS: 0.365±0.026 vs" @default.
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- W4307205 date "2003-01-01" @default.
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- W4307205 title "Ameliorative effects of sodium ferulate on experimental colitis and their mechanisms in rats" @default.
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