樂復(fù)能對(duì)潰瘍性結(jié)腸炎小鼠療效及其對(duì)小鼠結(jié)腸黏膜內(nèi)TNF-α表達(dá)的影響
[Abstract]:Objective: to observe the therapeutic effect of Lefoneng on experimental ulcerative colitis (ulcerative colitis,UC) mice induced by sodium dextran sulfate (dextran sulfate sodium,DSS) and its effect on tumor necrosis factor- 偽 (tumour necrosis factor alpha, in colonic mucosa of mice. To understand the therapeutic effect of Lefoneng on UC and its possible mechanism. Methods: 70 Balb/C female mice, about 8 weeks old, with body weight of 1822 g / mouse, clean grade. They were randomly divided into 7 groups: normal group, model group, mesalazine group, prednisone group and low, medium and high dose groups with 10 rats in each group. The model of UC mice was made by the method of free drinking of 4%DSS aqueous solution. On the 8th day, the mice were killed on the 14th day. The length of ileocecum to anus was measured, and the disease activity index (disease activity index,DAI) was recorded. Colonic length, histological injury score and expression of TNF- 偽 in colonic mucosa. Results: 1) diarrhea, mucus stool, fecal occult blood positive or blood stool were found in all the intervention groups treated with DSS. With the increase of days, the DAI score of mice increased gradually. Mesalazine, prednisone and lofenac can all improve the general condition of mice, reduce the DAI score, reduce the shortening of colon length, and decrease the histological injury score. 2) the low, middle and high doses of Lefenone can improve the general condition of mice, reduce the colonic length of mice, and decrease the score of histological injury. Compared with the model group, the DAI scores in the mesalazine group and prednisone group were significantly different (P0.01). There was no significant difference between prednisone group and low dose group (P0.05). The therapeutic effect of high dose group was significantly better than that of mesalazine group. Prednisone group and lofenac low dose group (all P0.01), and the effect of lofenac in a dose-dependent manner, the high dose group was better than the middle dose group (P0.01). 3) the low, medium, high dose, prednisone group, the high dose group, the prednisone group, and the low dose group, the high dose group, the prednisone group. Compared with the model group, the mucosal defect of mesalazine group was relatively light, the small portion of glands was incomplete, and the inflammatory cells were less (P0.01). Compared with prednisone group, the tissue injury in high dose group and low group in middle dose group, mesalazine group and prednisone group were significantly alleviated, and the histological score was significantly decreased (P0.05). However, there was no significant difference between middle dose group, mesalazine group and prednisone group (P0.05). The expression of TNF- 偽 in medium, high dose, mesalazine and prednisone groups was significantly down-regulated. Compared with the model group, the difference was statistically significant (P0.01). Compared with prednisone group, there was no significant difference in the expression of TNF- 偽 between mesalazine group and prednisone group (P0.05). The expression of TNF- 偽 in medium and high dose groups decreased with the increase of dose. The expression of TNF- 偽 in all the lofenac groups was significantly lower than that in other treatment groups (all P 0.01). Conclusion: lofenac can significantly improve the DAI score, colonic mucosal injury and inflammation score of UC mice induced by DSS, and down-regulate the expression of TNF- 偽 in colonic mucosa of mice. The results are superior to those of mesalazine and prednisone. The effect of Lefeng was dose-dependent.
【作者單位】: 中南大學(xué)湘雅醫(yī)院消化內(nèi)科;
【分類號(hào)】:R574.62
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