黄芪总苷对脾虚大鼠胃粘膜TFF1和EGF表达的影响
Pharmacology and Clinics of Chinese Materia Medica(2014)
Abstract
目的:探讨黄芪总苷对冷水-束缚应激状态下脾虚大鼠胃粘膜TFF1、EGF mRNA和蛋白表达的影响.方法:大鼠70只分为7组,即正常对照组、脾虚组、模型(脾虚应激)组、黄芪总苷(高剂量200mg/kg、中剂量100mg/kg、低剂量50mg/kg)组、补中益气丸3.7g/kg组.采用大黄致脾虚法复制脾虚模型大鼠,水浸-束缚法给予脾虚大鼠应激,酶联免疫(ELISA)法检测TFF1、EGF蛋白表达变化,RT-PCR法测定TFF1、EGF的mRNA表达变化.结果:与正常组比较,脾虚组大鼠胃粘膜TFF1 mRNA和蛋白表达下降,EGF mRNA低表达,而脾虚应激组TFF1、EGF mRNA和蛋白表达增加;与脾虚应激组相比,补中益气丸组和黄芪总苷(200mg/kg)组TFF1和EGF表达均明显增加.结论:黄芪总苷对脾虚大鼠胃粘膜的保护作用机制可能与影响TFF1和EGF有关.
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