D-半乳糖衰老小鼠模型的建立
2019-10-21刘佳
刘佳



【摘 要】目的:建立 D-半乳糖亚急性衰老小鼠模型建立。方法:8周龄ICR小鼠,32只,雌性各半,10%D-半乳糖溶液500mg/(kg·d)颈后部皮下注射.连续注射 56天后后摘眼球取血,颈椎脱臼处死小鼠,并通过检测小鼠血清中 SOD 活力和 MDA 含量,对此衰老模型做出生物学鉴定。结果:造模过程中模型小鼠逐漸变得不活泼,喜蜷缩,脊椎隆起,体形消瘦,皮肤松弛,毛发稀疏、竖起失去光泽等一系列衰老体征,而正常对照组未出现上述衰老体征;与正常对照组相比,模型组血清SOD活力明显降低(P<0.01),差异有显著性意义;与正常对照组相比,血清MDA含量明显升高(P<0.01),差异有显著性意义。结论:本课题组成功建立了 D-半乳糖亚急性衰老小鼠模型。
【关键词】D-半乳糖
【中图分类号】R764 【文献标识码】A 【文章编号】1672-3783(2019)04-0031-01
【Abstract】Objective:To establish a D - galactose subacute aging mice model.Methods: 8 weeks of ICR mice, 32, female and male in half,500 mg/D - galactose 10% solution (kg·D) at the back of the neck subcutaneous injection . After 56days continuousinjection,blood were sampled from the eyes ,then the mice were executed.Through testing the SOD activity and MDA contentsin the serum, we can make biology identification of the aging mod.Results:The process of building model ,the model mice gradually became less active,liked curled, the spine upheavaled,body were thin ,skin were loose, hair were sparse,erecting and lost shineetc,a series of signs of aging,.However the normal control group did not appear the aging signs.Compared with the normal control group, the model group serum SOD activity decreased significantly (P < 0.01);Compared with the normal control group, serum MDA contents increased significantly (P<0.01).Conclusion:Our research group had established the D-galactose subacute aging model mice sucssessfully
【Key word】D- galactose
有文献报道选用D-半乳糖来建立衰老动物模型时发现,雄性大鼠相对于雌性大鼠更为敏感,可以首选雄性SD大鼠作为动物来源。但亦可选用Wistar大鼠、昆明小鼠、ICR小鼠等。目前D-半乳糖致衰老动物模型所需剂量及时间尚无统一规定,剂量范围从50-1250mg/(kg·d)不等。有学者认为,在制备D-半乳糖衰老大鼠或小鼠模型时,给D-半乳糖 50-500mg/(kg·d),连续6-8周比较合适。
本课题组选择ICR小鼠,D-半乳糖500 mg/(kg·d),建立衰老动物模型,通过观察各组小鼠生命状态的变化,及血液相关生化指标,判断此方法是否可以成功建立衰老模型。
1 材料
1.1 实验动物
8周龄ICR小鼠,雌雄各半,32只,体重25~30g,购自北京动物维通利华实验动物技术有限公司,许可证号:SCXK(京)2012-0001,实验过程中对动物的处置符合伦理学标准。
2 方法
2.1 动物的分组及饲养
32只8周龄ICR小鼠(25~30 g),雌雄各半,随机分成正常对照组、模型组每组16只,SPF级饲养。……
