中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (5): 690-694.doi: 10.3969/j.issn.2095-4344.3000

• 脊柱组织构建 spinal tissue construction • 上一篇    下一篇

退变腰椎间盘中白细胞介素21的表达及意义

杨  洋1,姚  羽2,沈孝天3,刘佳佳1,薛建华1   

  1. 南通大学附属医院,1创伤中心,2骨科,江苏省南通市   226001;3南通大学,江苏省南通市   226001
  • 收稿日期:2020-03-02 修回日期:2020-03-06 接受日期:2020-04-18 出版日期:2021-02-18 发布日期:2020-11-28
  • 通讯作者: 姚羽,硕士,副主任医师,南通大学附属医院骨科,江苏省南通市 226001
  • 作者简介:杨洋,男,1985年生,江苏省射阳县人,汉族,2011年南通大学毕业,硕士,主治医师,主要从事创伤外科及骨科生物力学研究。
  • 基金资助:
    南通市科技项目(MS12018057)

Expression and significance of interleukin-21 in intervertebral disc degeneration

Yang Yang1, Yao Yu2, Shen Xiaotian3, Liu Jiajia1, Xue Jianhua1   

  1. 1Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China; 2Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China; 3Nantong University, Nantong 226001, Jiangsu Province, China
  • Received:2020-03-02 Revised:2020-03-06 Accepted:2020-04-18 Online:2021-02-18 Published:2020-11-28
  • Contact: Yao Yu, Master, Associate chief physician, Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
  • About author:Yang Yang, Master, Attending physician, Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
  • Supported by:
    the Scientific Research Project of Nantong, No. MS12018057

摘要:

文题释义:
椎间盘退变型疾病:是由于腰椎间盘和关节突关节的关节软骨及其周围韧带退行性改变引发的以腰腿痛、坐骨神经痛为主要临床表现的一系列疾病的总称,是腰椎自然老化及其功能逐渐退化所致的一种疾病,是椎间盘突出症、腰椎管狭窄等脊柱退行性疾病的病理学和病理生理学基础。
白细胞介素21:是含有四螺旋束细胞因子结构域的γc家族新成员,主要由激活的Th17细胞分泌,且可以促进更多的初始CD4+T细胞分化为Th17细胞,而新分化的Th17细胞更多地分泌白细胞介素21,从而形成一个白细胞介素21自分泌环,再促进Th17细胞分泌白细胞介素17,从而介导自身免疫炎症反应。

背景:Th17细胞的特异性细胞因子白细胞介素17在退变的腰椎间盘组织中含量显著升高,白细胞介素21对Th17细胞的分化与增殖起到重要的作用。
目的:探讨白细胞介素21在腰椎间盘退变中的作用与意义。
方法:取40份髓核组织标本,其中32份取自腰椎间盘退变患者,8份取自腰椎骨折患者,同时取两组患者外周血样本。所有患者均收治于南通大学附属医院脊柱外科并经MRI及临床查体确诊。采用免疫组化法检测两组髓核组织中白细胞介素21的表达,ELISA检测两组髓核组织和外周血中白细胞介素21、白细胞介素17和白细胞介素6水平,并进行Pearson相关分析。
结果与结论:免疫组化结果发现试验组髓核组织中白细胞介素21阳性率明显高于对照组(P < 0.01)。ELISA检测结果发现试验组髓核组织及外周血中白细胞介素21、白细胞介素17和白细胞介素6水平均明显高于对照组(P < 0.01)。试验组髓核组织中白细胞介素21水平与其相关因子白细胞介素17、白细胞介素6水平呈正相关。结果表明白细胞介素21参与了腰椎间盘退变时发生的炎症反应和自身免疫反应。

https://orcid.org/0000-0002-4086-5645 (杨洋) 
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

关键词: 腰椎, 椎间盘, 退变, 髓核, 白细胞介素21, Th17细胞, 细胞因子, 炎症

Abstract: BACKGROUND: Interleukin-17, as the specific marker of Th17 cells, is highly expressed in degenerative lumbar disc tissue. Interleukin-21 plays an important role in proliferation and differentiation of Th17 cells. 
OBJECTIVE: To test the expression of interleukin-21 in nucleus pulpous tissue and peripheral blood of patients who accepted the surgery of intervertebral disc degeneration and to analyze the relevant significance.
METHODS: In total, 40 samples of nucleus pulpous tissues were obtained, 32 from intervertebral disc degeneration (IDD) and 8 from lumbar fracture (control group). Peripheral blood samples were collected from the same cohort. All patients were confirmed by physical examination and MRI and then admitted to the Spine Centre of Affiliated Hospital of Nantong University. We detected the positive signal of interleukin-21 in nucleus pulpous tissue through immunohistochemical method, and measured the levels of interleukin-21, interleukin-17 and interleukin-6 in the nucleus pulpous and peripheral blood by ELISA. Pearson’s correlation analysis was performed thereafter.  
RESULTS AND CONCLUSION: There were more positive signals of interleukin-21 in the IDD group than the control group. The expression levels of interleukin-21, interleukin-17 and interleukin-6 were significantly higher in the IDD group than the control group as detected by ELISA. The level of interleukin-21 was positively correlated with the expression of interleukin-17 and interleukin-6. These findings indicate that interleukin-21 is involved in inflammatory and autoimmune responses during the development of IDD.

Key words: lumbar disc, intervertebral disc, degeneration, nucleus pulposus, interleukin-21, Th17 cell, cytokine, inflammation

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