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机构地区:[1]长治医学院附属和济医院内镜科,046000 [2]长治医学院附属和平医院内镜科 [3]消化科
出 处:《中国医药》2012年第9期1123-1125,共3页China Medicine
摘 要:目的探讨乌司他丁对大鼠实验性溃疡性结肠炎(UC)的作用及机制。方法120只SD大鼠随机分为4组,每组各30只。使用三硝基苯磺酸钠(TNBS)建立UC模型,I组不使用乌司他丁,为造膜对照组;Ⅱ、Ⅲ、Ⅳ组分别于造模0、6、12h使用乌司他丁,剂量为2万单位/kg,为研究组。检测分析各组肠静脉内毒素、肿瘤坏死因子仪(TNF-α)和UC模型症状积分(实验开始24、72、168h各观察10只大鼠)。结果①在实验各时段,使用乌司他丁组UC大鼠病变积分均低于I组(均P〈0.05),且24、72h时Ⅱ、Ⅲ、Ⅳ组差异均有统计学意义[24h:(1.8±0.4),(2.7±0.3),(3.0±0.1);72h:(3.7±2.3),(4.2±1.2),(5.0±0.9),均P〈0.05],但168h时Ⅱ、Ⅲ、Ⅳ组未见明显差异。②使用乌司他丁组肠静脉内毒素含量在实验各时期内均低于I组,24h时Ⅱ组与Ⅲ组、Ⅳ组之间差异均有统计学意义[(97.7±11.7)ng/L比(117.1±9.7)ng/L,(124.3±4.9)ng/L,均P〈0.05],72、168h时Ⅱ、Ⅲ、Ⅳ组肠静脉血内毒素含量差异无统计学意义。③24h时Ⅱ组TNF-α低于I组及Ⅲ、Ⅳ组[(6.7±2.6)pg/100μg比(13.5±1.7),(11.8±2.8),(12.4±2.7)pg/100μg,均P〈0.05)],但72、168h使用乌司他丁各组低于I组。结论乌司他丁对TNBS导致的大鼠UC有明显防护作用,其机制可能通过抑制内毒素水平而降低免疫异常水平。Objective To investigate the effect of ulinastatin on ulcerative colitis of rats. Methods One hundred and twenty sprague dawley ( S-D ) rats were divided into four groups randomly. Ulcerative colitis ( UC ) model was induced by three nitrobenzene sulfonate (TNBS). The group I was control group and was free of ulinastatin ; group Ⅱ, Ⅲ, Ⅳ were given ulinastatin [2×10^5 u/( kg·12 h) ] at 0, 6, 12 h after TNBS. Endotoxin, tumor necrosis factor (TNF)-α of Intestinal vein and UC symptomatic index were detected and analyzed. Results ①UC symptomatic index in given ulinastatin groups was lower than that in Ⅰ group at any stage (P 〈 0. 05 ) and showed statistical differences among group Ⅱ and Ⅲ, Ⅳ ( P 〈 0.05 ) at 24 h and 72 h. ②Endotoxin in ulinastatin groups was lower compared to that in control group (P 〈 0. 05 ). ③ There was a lower TNF-α level in group Ⅱ compared to other groups (P 〈0. 05) ; at 72 h, 168 h, TNF-α in ulinastatin groups was lower than that in group Ⅰ (P 〈 0.05 ). Conclusion Ulinastatin shows good effects on rats UC caused by TNBS. It may depress abnormal immune reaction through inhibiting endotoxin.
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