Gene therapy of hepatocyte growth factor mediated by attenuated salmonella typhimurium for TNBS-induced ulcerative colitis in rats
- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 11
- DOI:
- 10.3969/j.issn.1009-3079.2008.11.005
- Key Word:
- 溃疡性结肠炎;减毒沙门氏菌;肝细胞生长因子基因
Abstract： 目的:评价携带肝细胞生长因子基因的减毒沙门氏茵(Typl-HGF)对TNBS诱发大鼠溃疡性结肠炎模型的治疗效果.方法:40只Wistar大鼠经TNBS灌肠诱发溃疡性结肠炎模型,并随机分为减毒沙门氏菌株(Ty)治疗组、Typl-HGF治疗组、携带绿色荧光蛋白基因的减毒沙门氏茵株(Typl-GFP)观察组和模型对照组4组,每组10只;另设生理盐水灌肠正常对照组10只.3次和6次ig l wk后,分别观察各组大鼠的一般情况、结肠大体现及评分、结肠组织学变化及评分和目的基因表达.结果:Typl-HGF治疗组3次ig后体质量略有增加,但差异无统计学意义;6次Typl-HGF治疗后动物体质量较模型对照组平均增加9.75±2.07g,差异有统计学意义(P<0.05),Ty治疗组与模型对照组大鼠症状均无明显缓解.3次和6次Typl-HGF治疗组结肠大体标本积分明显低于同期Ty治疗组和模型对照组(2.20±0.90 vs 5.10±1.70,5.30±1.30;1.70±1.10 vs 4.00±1.50,4.30±1.20,均P<0.01),且3次和6次TyplHGF ig治疗相比较有统计学意义(P<0.05).3次ig后Typl-HGF治疗组组织学评分与Ty治疗组和模型对照组无明显差别;6次Typl-HGF治疗后组织学评分与同期模型组标本积分相比,二者之间差异有统计学意义(1.60±0.30 vs 3.50±0.70,P<0.05).Typl-GFP ig后在结肠组织可见GFP强表达.结论:Typ1-HGF能明显减轻TNBS诱发溃疡性结肠炎模型大鼠的症状及炎症,对已形成的黏膜损伤及溃疡有促修复作用.
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