Adaptive cytoprotection of gastric mucosa in rats after intragastric administration of edible alcohol
- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 1
- DOI:
- 10.3969/j.issn.1009-3079.2007.01.005
- Key Word:
- 食用白酒;胃黏膜;适应性保护;前列腺素E2;转化生长因子α
Abstract： 目的:观察食用白酒灌胃后,大鼠胃黏膜对无水乙醇损伤的反应及前列腺素E2(PGE2)、转化生长因子α(TGF-α)的表达情况.方法:SD大鼠36只,分别采用食用白酒530±20 mL/L(A组),乙醇530 mL/L(B组)、生理盐水(C组)按5 mL/kg隔日给大鼠灌胃,在1 wk末、1 mo末处死动物,对比观察胃黏膜的Guth积分;用免疫组织化学方法测定胃黏膜中TGF-α的表达强度.另取36只大鼠,按以上相同处理后用酶联免疫方法测定胃黏膜中PGE2水平.结果:胃黏膜损伤程度由轻到重依次为A,B,C组,A,B,C组1 wk Guth积分分别为26.5±6.4,40.5±8.1,69.3±4.3,两两比较均有统计学差异(P＜0.05);A,B,C组1 mo Guth积分分别为34.8±8.0,54.8±8.0,74.8±3.1,两两比较均有统计学差异(P＜0.05).1 wk A,B组胃黏膜组织内PGE2水平与C组相比明显增高(17.2±1.8,16.6±1.1 ng/L vs 13.0±1.5 ng/L,P＜0.05),A组与B组相比无差异(P＞0.05);1 mo后A组PGE2值下降,与C组相比无差异(P＞0.05),而A,C组与B组相比均有差异(15.7±1.4,14.6±1.9 ng/L vs 18.5±2.7 ng/L,P＜0.05).TGF-α表达1 wkA,B组与C组有统计学差异(均P=0),A组与B组无差异;1 mo A,B,C组两两比较有差异(P=0.013,0.001,0).PGE2水平、TGF-α表达强度1 wk与1 mo比较,在A,C组差异有统计学意义(P＜0.05);B组前后无差异.结论:食用白酒及乙醇对胃黏膜均可产生抗损伤作用;同时胃黏膜PGE2水平增高、TGF-α表达增强,PGE2,TGF-α在胃黏膜适应性保护过程中起到重要作用.
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