中国组织工程研究

• 肌肉肌腱韧带组织构建 tissue construction of the muscle, tendon and ligament • 上一篇    下一篇

肿瘤坏死因子α拮抗剂对应力屏蔽导致的跟腱挛缩形态学影响

李  萍,赵华昆,马燕红   

  1. 上海交通大学附属第六人民医院康复科,上海市  200233
  • 修回日期:2013-10-20 出版日期:2013-12-10 发布日期:2013-12-10
  • 通讯作者: 马燕红,主任医师,上海交通大学附属第六人民医院康复科,上海市 200233
  • 作者简介:李萍★,女,1988年生,山东省泰安市人,汉族,上海交通大学医学院在读硕士,主要从事骨关节康复方面的研究。 Sunshinelp0423@163.com
  • 基金资助:

    上海交通大学医学院自然科学基金资助(YZ1061)*

Effects of tumor necrosis factor alpha antagonist on the morphological change of Achilles tendon contracture induced by stress shielding

Li Ping, Zhao Hua-kun, Ma Yan-hong   

  1. Department of Rehabilitation, Sixth Affiliated People’s Hospital, Shanghai Jiao Tong University, Shanghai  200233, China
  • Revised:2013-10-20 Online:2013-12-10 Published:2013-12-10
  • Contact: Ma Yan-hong, Chief physician, Department of Rehabilitation, Sixth Affiliated People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
  • About author:Li Ping★, Studying for master’s degree, Department of Rehabilitation, Sixth Affiliated People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China Sunshinelp0423@163.com
  • Supported by:

    the Natural Science Foundation of Medical School of Shanghai Jiao Tong University in China, No. YZ1061*

摘要:

背景:跟腱应力屏蔽后肿瘤坏死因子α明显升高,应用肿瘤坏死因子α拮抗剂干预肿瘤坏死因子α的作用是否会干预跟腱挛缩尚不清楚。
目的:通过观察重组人Ⅱ型肿瘤坏死因子受体-抗体融合蛋白(益赛普)干预应力屏蔽后大鼠跟腱形态学变化,了解肿瘤坏死因子α在肌腱挛缩中的影响及肿瘤坏死因子α拮抗剂对肌腱挛缩的干预作用。
方法:20只健康雄性SD大鼠左后肢行跟腱应力屏蔽后随机数字表法均分为实验组和模型组,两组中随机各抽取5只大鼠以右后肢为正常对照组。建模后即刻实验组大鼠使用0.6 mg/kg重组人Ⅱ型肿瘤坏死因子受体-抗体融合蛋白、模型组使用1 mL磷酸缓冲盐溶液于大鼠皮下注射,后根据重组人Ⅱ型肿瘤坏死因子受体-抗体融合蛋白半衰期两组分别再注射3次,干预2周时大体下及透射电镜下观察跟腱形态学改变。
结果与结论:大体观察实验组跟腱明显比模型组细小、光滑,但较正常对照组粗。电镜下模型组胶原纤维束较实验组组疏松、紊乱;实验组横切面和纵切面均与正常对照组差异无显著性意义。说明,在2周时,肿瘤坏死因子α拮抗剂能明显预防应力屏蔽所致的肌腱挛缩。



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 肌肉肌腱韧带组织构建, 肌腱, 挛缩, 应力屏蔽, 肿瘤坏死因子α拮抗剂, 肌腱挛缩, 其他基金

Abstract:

BACKGROUND: Stress shielding in the Achilles tendons induces over-expression of tumor necrosis factor-α. The degree of tendon contracture remains unclear after the intervention with tumor necrosis factor inhibitor.
OBJECTIVE: To investigate the effects of tumor necrosis factor-α on tendon contracture and the preventive effects of tumor necrosis factor inhibitor (etanercept) on tendon contracture by observing the morphological changes of the stress-shielded Achilles tendons after the intervention with etanercept.
METHODS: A total of 20 healthy male Sprague-Dawley rats were randomly divided into experimental and model groups after stress shielding in Achilles tendons of rat left hind limb. Five rats from either group were randomly selected, and their right hind limbs were considered as normal controls. Immediately after model induction, the rats in the experimental group were subjected with 0.6 mg/kg etanercept, and those in the model group were subcutaneously treated with 1 mL phosphate buffered saline. According to half-life of etanercept, the two groups were separately injected three times. At 2 weeks after intervention, the morphological changes of the Achilles tendons were observed using gross examination and transmission electron microscope.
RESULTS AND CONCLUSION: On gross examination, the Achilles tendons in the experimental group were significantly smoother and smaller than those of the model groups, but thicker than those of the normal control group. Under a transmission electron microscope, the collagen fibrils of the model group were looser and more disordered than those of the experimental group. The collagen fibrils of the experimental group were similar to those of the normal control group in cross section and longitudinal section. These indicated that tumor necrosis factor-α antagonist can obviously prevent stress shielding-induced tendon contracture at 2 weeks.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: tendinopathy, Achilles tendon, contracture, tumor necrosis factor-alpha, recombinant fusion proteins, stress, mechanical

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