›› 2003, Vol. 23 ›› Issue (4): 197-199.

• 论文 • 上一篇    下一篇

增龄和应力对大鼠髓核退变影响的超微结构观察

  

  1. 1.复旦大学附属金山医院骨科,上海 200540;2.复旦大学附属中山医院骨科,上海 200032;3.复旦大学电子显微镜室,上海 200032
  • 收稿日期:2003-09-01 出版日期:2003-01-25 发布日期:2013-03-19

Effect of Aging and Stress on the Ultrastructure of Nucleus Pulposus in Rat

  1. 1.Department of Orthopaedics,Jin shan Hospital,Fudan University, Shanghai 200540,China;2.Department of Orthopaedics,Zhongshan Hospital,Fudan University,Shanghai 200032, China;3.Electron Microscope Laboratory,Fudan University,Shanghai 200032, China
  • Received:2003-09-01 Online:2003-01-25 Published:2013-03-19

摘要: 采用截肢和特殊饲养方法培育出双后肢大鼠动物模型,以正常大鼠作为对照,通过电镜检查来观察大鼠L2-3椎间盘髓核的超微结构变化。随着年龄增长和应力增加,SD大鼠髓核中脊索细胞出现明显的退变和坏死。基质中胶原纤维排列紊乱,出现板层样结构和团块。表明增龄和应力加速了SD大鼠髓核的退变,其变化规律与人类一致。

关键词: 椎间盘, 退变, 超微结构, 双后肢大鼠

Abstract: The bipedal rats model was developed by forelimb amputation and special rearing methodvs.Normal rats served as the control. The ultrastructure of nucleus pulposus of L2-3 discs of these rats were observed under electron microscope. With the increasing of aging and stress, obvious degeneration and necrosis were observed in the notochordal cells in nucleus pulposus of SD rats. In the matrix the arrangement of the collagen fiber became disordered, lamellar structures and mass appeared. These results demonstrated that aging and stress accelerated the degeneration of nucleus pulposus of SD rats. The degeneration proce-dure was in agreement with that of human beings.

Key words: Intervertebral disc, Degeneration, Ultrastructure, Bipedal rat