中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (18): 2806-2811.doi: 10.3969/j.issn.2095-4344.2014.18.004

• 神经组织构建 nerve tissue construction • 上一篇    下一篇

急性不完全脊髓损伤模型大鼠相关炎症因子的表达

宗少晖1,方   晔2,彭金珍2,高太行2   

  1. 1广西医科大学第一附属医院脊柱骨病外科,广西壮族自治区南宁市  530021;2广西医科大学研究生学院,广西壮族自治区南宁市  530021
  • 收稿日期:2014-02-17 出版日期:2014-04-30 发布日期:2014-04-30
  • 通讯作者: 宗少晖,男,1972年生,广西桂林市人,2005年毕业于北京大学,博士后,教授,硕士生导师,主要从事脊柱脊髓损伤机制研究。
  • 作者简介:宗少晖,男,1972年生,广西壮族自治区桂林市人,瑶族,2005年北京大学毕业,博士,教授,主要从事脊髓损伤研究。
  • 基金资助:

     广西教育厅科研基金资助项目(广西高校科研项目 201204LX063)

The expression of inflammatory factors in different periods after acute spinal cord injury in rats

Zhong Shao-hui1, Fang Ye2, Peng Jin-zhen2, Gao Tai-hang2   

  1. 1Department of Spine Osteopathia, the First Affiliated Hospital of Guangxi Medical University; 2Graduate School of Guangxi Medical University, Nanning, Guangxi, 530021, China
  • Received:2014-02-17 Online:2014-04-30 Published:2014-04-30
  • About author:Zong Shao-hui, M.D., Professor, Department of Spine Osteopathia, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Science Research Project for Institutions of Higher Education from Guangxi Department of Education, No. 201204LX063

摘要:

背景:随着现代交通和工矿事业的发展,脊髓损伤成为临床常见的多发病,严重的影响了人类身心健康和生活质量。
目的:检测在大鼠急性脊髓损伤模型中磷酸化信号转导与转录激活因子3(p-STAT3)介导的IL-1β、IL-6、IL-17等炎症因子的表达变化情况,探讨IL-1β、IL-6、IL-17等炎症因子在急性脊髓损伤后炎症反应过程中的作用。
方法:雄性成年SD大鼠75只,随机分为对照组和脊髓损伤1h、6h、24h和72h四个亚组(n=15只)。采用改良Allen氏法建立脊髓损伤模型,对照组仅行椎板全切除术。在建模之后相应的时间点获取损伤段脊髓、脾脏组织,免疫组织化学染色法检测IL-6和IL-17在损伤段脊髓组织中的分布及表达情况,蛋白免疫印迹法检测p-STAT3在损伤段脊髓组织中的表达变化,采用RT-PCR法检测IL-1βmRNA、IL-6mRNA和IL-17AmRNA在脾脏组织中的表达情况。
结果与结论:脊髓损伤后p-STAT3、IL-1β、IL-6和IL-17的表达明显高于对照组(P<0.05)。损伤后炎症因子表达量立即升高,IL-1β和IL-6在损伤后6h小时到达高峰,随后开始下降;p-STAT3和IL-17在损伤后24h到达高峰,随后开始下降,至损伤后72h表达量仍高于对照组。损伤早期p-STAT3介导的促炎因子IL-1β和IL-6表达增加,可能导致损伤区域炎症级联放大,诱导继发性脊髓损伤;促炎因子IL-17的异常升高,可能在继发性损伤炎症反应中起着重要作用。



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

关键词: 实验动物, 组织构建, 白细胞介素1β, 白细胞介素6, 白细胞介素17, p-STAT3, 脊髓损伤

Abstract:

BACKGROUND: With the development of modern transportation and mining industrial, spinal cord injury has become a common clinical frequently-occurring disease which was serious influence human physical health and quality of life.

OBJECTIVE: To investigate the inflammatory factors expression of interleukin-1β (IL-1β), interleukin-6 (IL-6) and interleukin-17A (IL-17A) in the rat model of acute spinal cord injury via phosphorylated signal transducer and activator of transcription 3 (p-STAT3) and explore the role of interleukin-1β (IL-1β), interleukin-6 (IL-6) and interleukin-17A (IL-17A) in the acute inflammatory reaction after spinal cord injury.
METHODS: A total of 75 adult male SD rats were divided into two groups, the sham operation group and the spinal cord injury group; then put them into the subgroups randomly, which were 1h, 6h, 24h and 72h (n = 15) Acute spinal cord injury rat model was established by the modified Alleng weight drop method. The sham operation group just underwent laminectomy. The rats were sacrificed at corresponding time after operation and spinal cord, spleen tissues were collected. Immunohistochemical used to detect the expressions of IL-6 and IL-17 in spinal cord tissue injury segment dynamic changes, mRNA expression of IL-1β, IL-6 and IL-17A were detected by RT-PCR, Western blot used to detect the expressions of p-STAT3 dynamic changes.
RESULTS AND CONCLUSION: The average expression level of p-STAT3, IL-1β, IL-6, and IL-17 in SCI group had significant increased from those in the sham operation group. The expression of inflammatory cytokines IL-1β and IL-6 immediately increased following injured and peaked at 6 h; the expression of IL-17 and p-STAT3 immediately increased and peaked at 24 h; then sluggishly decreased, but its expression of 72h after injury still more than the sham operation group(P <0. 05). The expression of pro-inflammatory cytokines IL-1β and IL-6 had significant increased following early injured via p-STAT3 may be play a role in secondary spinal cord injury by inflammatory cascade; abnormally elevated pro-inflammatory cytokines IL-17, possibly in secondary injury plays an important role in inflammation.


中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

Key words: spinal cord injuries, interleukin-1 beta, interleukin-6, interleukin-17

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