目的:探讨慢性炎症是否可加剧肥胖状态小鼠糖代谢紊乱,及是否影响肝脏糖异生及相关机制。方法:野生C57BL/6J小鼠随机分为正常饮食组、高脂饮食组、高脂饮食合并炎症组(高脂饮食加酪蛋白注射组)。小鼠巨噬细胞标志物F4/80免疫组化染色检测肝脏巨噬细胞浸润情况,实时荧光定量PCR检测单核细胞趋化蛋白-1(Mcp1),糖异生相关基因葡萄糖-6-磷酸酶(G-6-pase)和磷酸烯醇式丙酮酸(Pepck)m RNA相对表达量,过碘酸-希夫染色和蒽酮法检测肝脏糖原含量,蛋白免疫印迹法检测肝脏组织叉头框蛋白O1(Fox O1),蛋白激酶B(Akt)及其磷酸化蛋白表达。结果:高脂饮食加酪蛋白注射组较高脂饮食组肝脏组织炎症明显升高(P=0.000),且空腹血糖及胰岛素耐量曲线下面积均明显升高(P=0.040,P=0.025),肝脏糖原积聚亦明显增加(P=0.000),肝糖异生相关基因G-6-pase、Pepck m RNA表达明显升高(P=0.001,P=0.001),而肝脏Akt及Fox O1蛋白磷酸化程度均明显下降(P=0.021,P=0.003)。高脂饮食组较正常饮食组肝脏Akt、Fox O1蛋白磷酸化降低,糖异生基因表...
【英文摘要】
Objective:To investigate whether inflammation plays a role in accelerating glucose metabolism disorder in obese mice and whether the mechanism is regulated by liver gluconeogenesis. Methods:The C57BL/6J mice were randomly divided into normal chaw diet group,high fat diet group,high fat diet with chronic inflammation group(high fat diet with casein injection group). The macrophage infiltration in the liver was detected by F4/80 staining. The m RNA relative expression levels of Mcp1,G-6-pase and Pepck were ex...
[15]Baylin SB,Jones PA.A decade of exploring the cancer epigenome-biological and translational implications[J].Nat Rev Cancer,2011,11(10):726-734.[16]Versteege I,Sevenet N,Lange J,et al.Truncating mutations ofh SNF5/INI1 in aggressive paediatric cancer[J]