【摘要】 目的探讨三叶因子2(TFF2)基因治疗对实验性大鼠胃溃疡的疗效及其机制。方法2005-06-10—2006-03-15南方医科大学南方医院消化病研究所将48只雄性Wistar大鼠随机分为2组,治疗组24只,对照组24只。治疗组每只应用pcDNA3.1g+TFF2100μg,对照组每只应用等容积pcDNA3.1g+TFF2100μg,均在造模时经胃壁浆膜下注入。用药后分别在第3、7、14天处死动物,测量大鼠胃溃疡指数、胃总酸度及黏液糖蛋白量的变化。结果在应用pcDNA3.1g+TFF2的第3天,治疗组和对照组比较,各项指标差异无统计学意义(P>0.05);第7天,治疗组的黏液糖蛋白量显著增加,与对照组比较差异有统计学意义(P<0.01)。第14天,治疗组的溃疡面积显著缩小,与对照组比较差异有统计学意义(P<0.01);治疗组黏液糖蛋白量有所下降,不过与对照组比较差异也有统计学意义(P<0.05);而治疗组的胃总酸度变化不大,与对照组比较差异无统计学意义(P>0.05)。结论TFF2基因治疗对实验性大鼠胃溃疡愈合有促进作用,增加胃黏液糖蛋白的分泌是其促进溃疡愈合的机制之一,而与抑制胃酸分泌无关。更多还原

【Abstract】 Objective To study the effect of TFF₂ gene theragy on the healing of experimental gastric ulcer in rats and its mechanism.Methods From Jun.10,2005 to Mar.15,2006.48 Wistar rats were randomly divided into two groups:24 in therapy group,24 in control group.pcDNA3.1-TFF₂ 100μg was used in each rat in therapy group,and the same volume of pcDNA 3.1 was used in control group.Each rat was injected under serous membrane of the gastric wall after making model.The rats were executed separately after 3、7、14 days.Results Ulcer index was 9.7±2.9 mm2 in therapy group and was 17.7±3.1 mm2 in control group on the 14th day.There was significant difference between the two groups.The average amount of mucous glycoprotein was 83.35±4.54 mg/g in the therapy group and 70.36±4.22 mg/g in the control group.There was no significant change in the secretion of acid between the two groups.Conclusion TFF₂ gene therapy can promote the healing of experimental gastric ulcer in rats.Its mechanisms may include increasing mucous glycoprotein of the gastric wall without suppressing gastric acid secretion.更多还原