脾虚1号方对脾虚证功能性消化不良大鼠小肠葡萄糖转运蛋白1的影响

摘要

Objective To investigate the effects of Pixu Yihao Fang (PXYHF, No.1 Formula for Spleen Deficiency) on the expression of Glucose Transporter (GLUT1)protein (GLUT1) and mRNA in small intestine tissue of FD spleen-deficient rats and functional dyspepsia (FD) the intervention of Pixu I Fang.Methods 70 10-day-old male SD rat pups were randomly divided into normal control group (n=10), FD model group (single model, n=10), and spleen-deficient FD model group (double model, n=50).The normal control group received intragastric administration of 0.2 mL of 2% sucrose, while the single and double model groups were given 0.2 mL of 0.1 % iodoacetamide (IA)IA in 2 % sucrose, for 6 days.6 weeks after birth consecutive days, the Modified multiple platform method (MMPM) was also applied to establish double model for 14 days after week 6.These spleen-deficient FD rats were randomly divided into double model control group, domperidone group, PXYHF low-dose, medium-dose and high-dose dose groups, and were orally gavaged with 10 mL/(kg·d) of distilled water, 3.125 mg/(kg·d) of domperidone, 1.275, 2.55, 5.1 g/(kg·d) of PXYHF respectively for 14 days.Immunohistochemistry, Western-blot and RT-PCR methods were used to measure the GLUT1 protein expression in liver tissues.Results Compared with the normal group, average optical density of GLUT1 protein in small intestinal mucosal tissue, the expression of GLUT1 protein and GLUT1 mRNA in small intestinal tissue of double model group were decreased (P<0.05, P<0.01);Compared with double model group, average optical density of GLUT1 protein in small intestinal mucosa tissue, expression of GLUT1 protein and GLUT1 mRNA in small intestinal tissue of low-dose PXYHF were increased (P<0.01).Conclusion The expression of GLUT1 gene and protein decreased in the FD rats with spleen deficiency, and Pixu Yihao Fang could increase the expression of GLUT1 gene and protein.%目的 探讨脾虚型功能性消化不良(FD)大鼠小肠组织葡萄糖转运体蛋白1 (GLUT1)蛋白与mRNA表达及脾虚1号方的干预作用.方法 70只7日龄雄性SD大鼠随机分为正常对照组(n=10)、FD模型组(单模型组,n=10)、脾虚型FD模型组(n=50).正常组给予2 %蔗糖溶液灌胃,FD模型组和脾虚型FD模型组均给予0.1 %蔗糖碘乙酰胺蔗糖溶液灌胃,0.2 mL/只·d,连续6 d.脾虚型FD模型组正常饲料喂养至6周龄后叠加改良小平台站立,连续14 d;造模结束后随机分为双模型组、多潘立酮组和脾虚1号方低、中、高剂量组,每组10只,连同正常组、单模型组,每日分别给予蒸馏水10 mL/kg、多潘立酮3.125 mg/kg和脾虚1号方1.275、2.55、5.1 g/kg和灌胃14 d.采用免疫组化、Western-blot和RT-PCR方法检测小肠组织GLUT1蛋白与mRNA表达.结果 与正常组相比,双模型组大鼠小肠黏膜GLUT1蛋白平均光密度值、小肠组织GLUT1蛋白和mRNA表达量均降低(P<0.05,P<0.01);与双模型组相比,脾虚1号方低剂量组大鼠小肠黏膜GLUT1蛋白平均光密度值、小肠组织GLUT1蛋白和mRNA表达量均升高(P<0.01).结论 脾虚型FD大鼠存在GLUT1 mRNA及蛋白的表达量降低,脾虚1号方能够上调GLUT1 mRNA及蛋白的表达量.