中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (8): 1251-1256.doi: 10.3969/j.issn.2095-4344.2017.08.018

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

腱止点过度使用性损伤组织:形态学及生长因子的变化

梁孝天1,曾晓辉1,王  博1,2,唐旖旎1,郝智腾1,王  琳2   

  1. 北京体育大学,1运动康复系,2运动医学教研室,北京市  100084
  • 收稿日期:2017-01-22 出版日期:2017-03-18 发布日期:2017-04-14
  • 通讯作者: 王琳,教授,博士生导师,北京体育大学,北京市 100084
  • 作者简介:梁孝天,男,1989年生,广西壮族自治区桂林市人,汉族,2017年北京体育大学毕业,博士,主要从事运动损伤及预防机制方面的研究。
  • 基金资助:

    国家自然科学基金课题(30871209)

Overuse-induced patella-patellar tendon junction injuries: histological characteristics and growth factor expression levels

Liang Xiao-tian1, Zeng Xiao-hui1, Wang Bo1, 2, Tang Yi-ni1, Hao Zhi-teng1, Wang Lin2   

  1. 1Department of Sports Rehabilitation, 2Section of Sports Medicine, Beijing Sport University, Beijing 100084, China
  • Received:2017-01-22 Online:2017-03-18 Published:2017-04-14
  • Contact: Wang Lin, Professor, Doctoral supervisor, Section of Sports Medicine, Beijing Sport University, Beijing 100084, China
  • About author:Liang Xiao-tian, M.D., Department of Sports Rehabilitation, Beijing Sport University, Beijing 100084, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30871209

摘要:

文章快速阅读:

文题释义:
腱止点损伤:是运动员及流水线工作人员的常见损伤之一,主要诱因是局部长期超负荷牵拉且不能得到充分的休息。多发部位有髌骨髌腱结合部、肩袖止点,跟腱止点等。在运动训练中,多发于重复性起跳、落地及长期处于半蹲位发力的项目,如篮球、排球等。
生长因子:许多生长因子的表达与损伤发生有着密切的关系。血管内皮生长因子是一种有效的血管再生因子,具有7种分子亚型的缩氨酸,能够调控特殊基因对诸如癌症或软组织修复时病理性缺氧或炎症产生适应性反应。在正常的成熟腱细胞中少有表达,在很多急性损伤或机械应力载荷动物模型中可见表达量增加。而碱性成纤维生长因子具有很强的促细胞分裂增殖及成血管作用,在组织修复过程中能促进血管内皮细胞及平滑肌细胞增生,并加快成纤维细胞的分裂。

摘要
背景:
髌骨髌腱结合部过度使用性损伤十分常见,目前学术界对该病的发病及愈合机制尚不清楚。
目的:拟通过对髌腱止点处进行反复牵拉建立过度使用性损伤动物模型,从组织形态学及生长因子变化角度探讨过度使用性损伤及愈合的机制。
方法:28只新西兰大白兔随机分为4组,空白对照组4只,左右后肢均作为对照;损伤造模组、自然愈合组和低强度干预组各8只,左后肢进行循环载荷训练。损伤造模组训练4周后立即处死;自然愈合组训练4周后继续休息4周处死;低强度干预组训练4周后改换低强度继续训练4周;对照组不做任何处理。观察循环载荷训练对兔髌骨髌腱结合部损伤形成及愈合过程中组织形态学、生长因子表达量的影响。
结果与结论:①与空白对照组相比,损伤造模组细胞排列紊乱,潮线消失,胶原纤维波浪状结构消失;自然愈合组及低强度干预组织学形态虽未能恢复正常但较损伤造模组更好;②3个实验组的纤维软骨带厚度及碱性成纤维细胞生长因子均显著高于空白对照组(P < 0.05);损伤造模组细胞浓度及血管内皮生长因子明显高于空白对照组和自然愈合组(P < 0.05);③结果表明,髌骨髌腱结合部过度使用性损伤造模成功后,休息4周仍不能恢复到正常状态,而伤后进行低强度训练有利于改善愈合质量。

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
ORCID: 0000-0001-8019-5191(梁孝天)

关键词: 组织构建, 组织工程, 过度使用性损伤, 髌腱止点, 愈合, 碱性成纤维细胞生长因子, 血管内皮生长因子, 国家自然科学基金

Abstract:

BACKGROUND: Although overuse-induced patella-patellar tendon junction injury is a common disease, its pathogenesis and healing mechanism remain unclear.
OBJECTIVE: To establish an overuse-induced injury animal model by a repetitive traction at the patellar tendon insertion, and to explore its pathogenesis and healing mechanism based on histomorphology and growth factor expression levels.
METHODS: Twenty-eight New Zealand rabbits were randomly divided into four groups: the rabbit left and right posterior limbs without any intervention as controls (n=4); cyclic loading training targeting the left posterior limb was done in model, healing and training groups (n=8 per group) for 4 weeks. Afterwards, the rabbits in the model group were killed immediately, rabbits in the healing group relaxed for another 4 weeks and then were killed, while rabbits in the training group were subjected to 4-week low-intensity training. The histological changes and growth factor expression levels during patella-patellar tendon junction injury and healing after load training were observed.
RESULTS AND CONCLUSION: Compared with the control group, in the model group, the cells and collagenous fibers arranged in disorder, and the tidemark disappeared. The healing and training groups healed incompletely, but showed better histological changes than the model group. The thickness of fibrocartilage and basic fibroblast growth factor level in the control group were significantly lower than those in the other three groups (P < 0.05). The cell density and vascular endothelial growth factor level in the model group were significantly higher than those in the control and healing groups (P < 0.05). These results show that the animal model of overuse-induced patella-patellar tendon junction injury cannot return to normal after 4 weeks of rest, but the low-intensity training is conductive to healing quality.

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

Key words: Cumulative Trauma Disorders, Fibroblast Growth Factors, Vascular Endothelial Growth Factors, Tissue Engineering

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