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探讨Kelch样环氧氯丙烷相关蛋白-1(Kelch-like epichlorohydrin-associated protein1,Keap1)/核因子E2相关因子2(nuclearfactor-E2-relatedfactor2,Nrf2)/血红素氧合酶-1(heme oxygenase1,HO-1)信号通路在应激性胃溃疡发生及发展中的作用.建立大鼠水浸束缚应激性(waterim mersionand restraintstress,WRS)胃溃疡模型,按Guth标准计算溃疡指数(ulcerindex