›› 2002, Vol. 22 ›› Issue (3): 145-151.

• 论文 • 上一篇    下一篇

大鼠营养干预性骨质疏松症模型的研究

  

  1. 1.复旦大学实验动物科学部,上海 200032;2.复旦大学公共卫生学院,上海 200032
  • 收稿日期:2002-04-30 出版日期:2002-01-25 发布日期:2013-03-19

Study of Osteoporotic Model in Rats with Nutrional Intervention

  1. 1.Laboratory Animal Department, FuDan University,Shanhai 200032, China;2.Public Health College,FuDan University,Shanhai 200032, China
  • Received:2002-04-30 Online:2002-01-25 Published:2013-03-19

摘要: 为了用营养干预的方法制作骨质疏松动物模型,并通过生化、骨密度测定以及病理学检查等鉴定骨质疏松模型,将3周龄Wistar大鼠按体重随机分为5组,每组8只,饲料配方参照AOAC方法。第1组为对照组(蛋白质18%,钙1.0%);第2组为低蛋白低钙组(蛋白质8%,钙0.025%);第3组为低蛋白中钙组(蛋白质8%,钙1.0%);第4组为高蛋白低钙组(蛋白质27.0%,钙0.025%);第五组为高蛋白中钙组(蛋白质27%,钙1.0%),其余全价饲料均一致。动物饲养20周,记录其体重变化情况,实验结束,进行大鼠全身骨密度测定,SPECT骨显像,血清Ca、P、Mg、AKP、BGP、E2测定,尿HOP、Ca测定,股骨骨密度、长度、体积、湿重、去脂干重、灰重和骨钙含量测定。胫骨及第三腰椎的病理学检查。测定结果表明,低蛋白低钙,高蛋白低钙的两组动物的各项检测结果均和对照组差异有显著性,符合骨质疏松的表现,证实营养干预成功地制备了骨质疏松动物模型。本文结果也证实,骨质疏松是以骨量减少为特征,骨组织显微结构改变和骨折危险频度增加的疾病。虽然在低钙状态下,无论进食高蛋白还是低蛋白,都可建立骨质疏松动物模型,但高蛋白饲料组的生长状况接近于对照组动物,故制作骨质疏松模型时以高蛋白饲料为宜。

关键词: 骨质疏松, 高蛋白, 低钙, 大鼠, 动物模型

Abstract: To examine whether rat osteoportic model was established quickly by high protein and low calcium diets, Forty female Wistar rats (3 weeks old)were randomly divided into 5 Groups and fed with diets formulated according to AO AC for twenty weeks. The contents of protein and calcium in 5 Groups were 18%,1%;8%, 0.025%;8%;1%; 27%,0.025%;and27%,1% respectively. The results showed that the content of bone calcium in Group 2 and Group 4 was obviously decreased compared with that of Group 1 (P<0. 001), the BMD and hending stress resistance of femur was also decreased (P<0.01), and the trabecular area of lumbar and tibia was increased. In compared with Group 1, The body weight gain of Group 2 was obviously decreased (P <0. 001) and estradion in serum was decreased (P<0.05). The results suggested that the Rat osteoportic model established by high protein and low calcium diets for twenty weeks was successful.

Key words: Osteoporosis, High protein, Low calcium, Rats, Model, Dietary