west china medical publishers
Keyword
  • Title
  • Author
  • Keyword
  • Abstract
Advance search
Advance search

Search

find Keyword "椎间盘退变性疾病" 2 results
  • A COMPARATIVE STUDY ON ESTABLISHING RABBIT INTERVERTEBRAL DISC DEGENERATION MODELS BY THREE METHODS

    Objective The rel iable animal model of intervertebral disc degeneration, can provide important experimental carrier to research pathogenesis and treatment of intervertebral disc degeneration. To establ ish three kinds of injury induced rabbit intervertebral disc degeneration models and to compare the characteristics among them by using biochemical and radiological methods. Methods Twenty-five healthy New Zealand white rabbits (weighing 2.0-2.5 kg) were randomly divided into 5 groups (n=5). The L3, 4, L4, 5 and L5, 6 discs in each rabbit were used for study. Groups A and B were forannulus puncture with an 18-gauge needle and a 22-gauge needle, respectively; group C was for nucleus aspiration; group D was for endplate injury and group E was used as a control. The lumbar spinal plain radiographs and magnetic resonance images (MRI) were evaluated, the raltive height of intervertebral disc was measured and the grades of disc degeneration were recorded 2, 4, 8, 16, and 32 weeks after operation. The water and the sulfated-glycosaminoglycan (s-GAG) contents of the nucleus were measured after sacrifice (randomly choose one rabbit from each group at each time point). Results In groups A, B, C and D, the height of intervertebral space in plain radiograph gradually decreased after operation. The anterior bony excrescences of vertebral body and varying degrees of calcification of endplate were also observed. The signal intensity of disc in T2-weighted magnetic resonance imaging decreased with time too. Compared with group E, the significant changes of height of intervertebral discs and grades of disc degeneration in MRI occurred at different time points within 4 weeks in groups A-D (P lt; 0.05). The significant change in groups C and D occured earl ier than in groups A and B. The water and s-GAG contents of discs decreased gradually in groups A-D after operation, while the significant change occurred at varying time points within 8 weeks compared with group E (P lt; 0.05). The apparent downward trend in groups C and D occured earl ier than in groups A and B. Conclusion All three methods are successful in inducing intervertebral disc degeneration. The degenerative process induced by endplate injury and nucleus aspiration is faster and more severe than that induced by annulus puncture.

    Release date:2016-08-31 05:47 Export PDF Favorites Scan
  • 生物活性因子治疗椎间盘退变性疾病的研究进展

    生物活性因子治疗是椎间盘退变性疾病生物治疗的重要组成部分,包括各类生长因子、炎性因子拮抗因子、生物酶类抑制剂及细胞内调节因子等,可通过不同途径对椎间盘内细胞功能进行调控。常用于椎间盘退变治疗的生物活性因子包括骨形态发生蛋白、转化生长因子 β、促有丝分裂因子和富血小板血浆等。生物活性因子发挥作用需一定的椎间盘微环境,即相当数量的有正常功能状态的椎间盘细胞、足够的营养支持及供氧条件。目前生物活性因子的应用仍存在可导致椎间盘骨化、软骨化等副作用,且缺少稳定可靠的给药途径。探索新的、有效的生物活性因子和其转化应用研究,以及不同生物治疗策略与生物活性因子的联合使用,是生物活性因子治疗椎间盘退变性疾病的重点和研究方向。该文对生物活性因子治疗椎间盘退变性疾病的研究进行了综述。

    Release date:2017-11-24 10:58 Export PDF Favorites Scan
1 pages Previous 1 Next

Format

Content