高脂饮食对小鼠转录因子C/EBPα表达的影响
2018-12-14耿蓓邬文正汪世君彭瑾瑾汪全海
耿蓓 邬文正 汪世君 彭瑾瑾 汪全海
【摘要】 目的:研究高脂饮食对小鼠转录因子CCAAT/增强子结合蛋白α(CCAAT/enhancer binding protein-α,C/EBPα)表达的影响。方法:60只(sprague dawley,SD)雄性小鼠适应性饲养1周,之后随机均分成两组:高脂饮食组(30只)和正常饮食组(30只),分别给予高脂饲料及普通饲料喂养,每周记录各组小鼠的体重,8周后用酶联免疫吸附测定法(enzyme linked immunosorbent assay,ELISA)测定两组小鼠血清中C/EBPα表达情况。采用SPSS 13.0统计学软件进行统计学分析,分析高脂饮食与正常饮食组之间血清C/EBPα表达的差异。结果:高脂饮食组小鼠血清C/EBPα浓度明显低于正常饮食组[(50.03±10.07)pg/mL vs (56.55±10.28)pg/mL,t=2.482,P=0.016)。随着喂养的进行,高脂饮食组小鼠每周体重明显增加,8周时高脂饮食组小鼠体质量与正常饮食组相比显著增加[(53.46±7.15)g vs (41.96±5.44)g,t=7.011,P=0.000],呈明显肥胖态。结论:高脂饮食可能减少C/EBPα的表达。
【关键词】 高脂饮食; 转录因子; C/EBPα; 体重; 肥胖
Effect of High-fat Diet on Expressions of Transcription Factor C/EBPα in Mouse/GENG Bei,WU Wenzheng,WANG Shijun,et al.//Medical Innovation of China,2018,15(27):00-004
【Abstract】 Objective:To study the effect of high-fat diet on the expressions of transcription factor CCAAT/ enhancer binding protein α(C/EBPα) in mouse.Method:Sixty male SD mice were fed adaptability for a week.Then these mice were randomly divided into two groups:the high-fat diet group(n=30) and the normal diet group(n=30).The weight of these mice were recorded weekly.Enzyme liked immunosorbent assay(ELISA) were applied to detect the expression of C/EBPα in serum after eight weeks.SPSS 13.0 statistical software was used to analyze the different expression of C/EBPα in serum between the high-fat diet group and the normal diet group.Result:The concentration of serum C/EBPα significantly decreased in the high-fat diet group compared with the normal diet group[(50.03±10.07)pg/mL vs (56.55±10.28)pg/mL,t=2.482,P=0.016].The weekly weight of mice in the high-fat diet group increased significantly with the feeding at 8 weeks,the high-fat diet group was (53.46±7.15)g,while the normal diet group was (41.96±5.44)g,there was statistical significance (t=7.011,P=0.000).The high-fat diet mice looked like fatter than that of the normal group obviously.Conclusion:High-fat diet could decrease the expression of C/EBPα in serum.
【Key words】 High-fat diet; Transcription factor; C/EBPα; Weight; Obesity
First-authors address:Wannan Medical College,Wuhu 241002,China
doi:10.3969/j.issn.1674-4985.2018.27.001
眾所周知,随着人们生活水平的提高,高脂、高热量饮食已越来越多见。大量的动物和人体实验表明,长期高脂饮食可明显改变机体的代谢状态[1],并影响多种转录因子的表达[2-5]。转录因子CCAAT/增强子结合蛋白α(C/EBPα)是转录因子CCAAT增强子结合蛋白(CCAAT/enhancer binding protein,C/EBP)家族中的一员[6]。作为一种重要的转录因子,C/EBPα在脂肪细胞、骨髓细胞、肝脏、肺及胎盘等多种细胞及组织中表达[7-9],并且在机体多种细胞的增殖、分化、炎症、能量代谢及肿瘤的发生等反应过程中发挥重要作用[9-11]。因此,机体内C/EBPα的准确表达对正常的生命进程至关重要,一旦其表达失调,就有可能对机体造成重大的影响。本研究通过高脂饮食与正常饮食喂养小鼠,并测定两种喂养方式下小鼠血清中转录因子C/EBPα表达的情况,探究高脂饮食是否对小鼠转录因子C/EBPα的表达产生影响。……
