中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (25): 3962-3969.doi: 10.12307/2021.005

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

孟鲁司特联合骨髓间充质干细胞移植治疗脊髓损伤模型大鼠

孙建威1,杨新明2,张  瑛2   

  1. 1河北北方学院研究生学院,河北省张家口市   075000;2河北北方学院附属第一医院骨科,河北省张家口市   075000
  • 收稿日期:2020-07-06 修回日期:2020-07-09 接受日期:2020-08-04 出版日期:2021-09-08 发布日期:2021-03-24
  • 通讯作者: 杨新明,主任医师,河北北方学院附属第一医院骨科,河北省张家口市 075000
  • 作者简介:孙建威,男,1987年生,河北省邯郸市人,汉族,河北北方学院在读硕士,主要从事脊柱外科的研究。
  • 基金资助:
    河北省卫生厅2011 年医学科学研究重点项目计划(20110176),项目负责人:杨新明;2013 年度河北北方学院创新人才培育基金项目(CXRC1322),项目负责人:杨新明

Effect of montelukast combined with bone marrow mesenchymal stem cell transplantation on spinal cord injury in rat models

Sun Jianwei1, Yang Xinming2, Zhang Ying2   

  1. 1Graduate School of Hebei North University, Zhangjiakou 075000, Hebei Province, China; 2Department of Orthopedics, The First Affiliated Hospital of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Received:2020-07-06 Revised:2020-07-09 Accepted:2020-08-04 Online:2021-09-08 Published:2021-03-24
  • Contact: Yang Xinming, Chief physician, Department of Orthopedics, The First Affiliated Hospital of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • About author:Sun Jianwei, Master candidate, Graduate School of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Supported by:
    Medical Science Research Key Project of Hebei Provincial Department of Health in 2011, No. 20110176 (to YXM); Innovative Talent Cultivation Foundation of Hebei North University in 2013, No. CXRC1322 (to YXM)

摘要:

文题释义:
孟鲁司特:作为一种新型的非激素类抗炎药物,能够通过特异性地选择半胱氨酰白三烯(CysLT1)受体,抑制其与白三烯结合,从而抑制白三烯受体介导的炎症反应,在临床常用于治疗哮喘等疾病。最新动物实验研究证实,大鼠脊髓损伤早期使用孟鲁司特能够显著改善继发性炎性反应,有利于脊髓功能恢复。 
骨髓间充质干细胞移植治疗大鼠脊髓损伤的机制:将骨髓间充质干细胞移植到受损的脊髓节段不仅可以长期存活,同时为神经元和胶质细胞的分化起到一种“网架”的作用,促进神经轴突生长,同时骨髓间充质干细胞有利于脊髓损伤部位微环境的改善,迁移至损伤部位的骨髓间充质干细胞可以自分泌和(或)旁分泌脑源性神经营养因子、神经生长因子等多种神经保护因子,这些营养因子表达上调,改善局部微血管再生、重构,修复损伤细胞。

背景:联合多种治疗手段能够针对不同靶点进行有效干预,发挥协同或叠加效应,已成为当今临床治疗脊髓损伤的新理念。
目的:探讨孟鲁司特联合骨髓间充质干细胞移植对脊髓损伤大鼠神经功能恢复的作用。 
方法:60只8周龄健康雄性SD大鼠随机分为4组,每组15只,分别为模型组、孟鲁司特组、骨髓间充质干细胞组、联合组。各组均按照Allen法进行脊髓损伤造模,在造模成功后1,6 h,通过灌胃给予孟鲁司特5 mg/kg或等量生理盐水,之后1次/d,连用30 d,造模后2 h在脊髓损伤区域一次性注入1 μL BrdU标记的骨髓间充质干细胞悬液或等量PBS。造模后1,3,7,14,21,30 d,应用BBB评分和Rivlin斜板实验进行大鼠后肢运动功能评价;造模后7 d,采用苏木精-伊红染色和Nissl染色观察大鼠脊髓组织病理学变化;采用免疫组化法检测大鼠脊髓组织胶质纤维酸性蛋白、白细胞介素1β的表达以及BrdU阳性标记率;采用Western blot法检测大鼠脊髓组织中凋亡相关蛋白Bcl-2、Bax和Caspase-3的表达。
结果与结论:①造模后7,14,21,30 d,联合组、孟鲁司特组、骨髓间充质干细胞组BBB评分和Rivlin斜板实验结果明显好于模型组
(P < 0.05);②造模后7 d,联合组、孟鲁司特组、骨髓间充质干细胞组炎性反应及水肿减轻,损伤空洞面积和胶质瘢痕面积减小,损害节段结构改善;③造模后7 d,联合组、孟鲁司特组、骨髓间充质干细胞组胶质纤维酸性蛋白、白细胞介素1β表达明显低于模型组(P < 0.05),联合组BrdU阳性率高于骨髓间充质干细胞组(P=0.000);④造模后7 d,联合组、孟鲁司特组、骨髓间充质干细胞组Bax和Caspase-3的表达显著低于模型组(P < 0.05),Bcl-2的表达显著高于模型组(P < 0.05);⑤联合组上述所有指标均优于孟鲁司特组、骨髓间充质干细胞组;⑥结果表明,孟鲁司特联合骨髓间充质干细胞移植能够显著改善脊髓损伤大鼠神经运动功能,其机制可能与抑制局部炎性反应及胶质细胞增生、减少凋亡相关蛋白的表达、提高骨髓间充质干细胞移植成活率有关。

https://orcid.org/0000-0002-9019-0631(孙建威) 
中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 干细胞, 骨髓间充质干细胞, 脊髓损伤, 孟鲁司特, 胶质纤维酸性蛋白, 白细胞介素1β, BrdU染色

Abstract: BACKGROUND: Combination with a variety of treatment methods can effectively intervene for different targets, play a synergistic or superimposed effect, and has become a new concept of clinical treatment of spinal cord injury. 
OBJECTIVE: To investigate the effect of montelukast combined with bone marrow mesenchymal stem cell transplantation on the recovery of neurological function in rats with spinal cord injury.
METHODS:  Sixty 8-week-old healthy male Sprague-Dawley rats were randomly divided into four groups, each with 15 rats, namely model group, montelukast group, bone marrow mesenchymal stem cell group, and combination group. The spinal cord injury model was performed in each group according to the Allen method, and montelukast 5 mg/kg or the equivalent amount of normal saline was administered by gavage at 1 and 6 hours after the model was successfully established, and then once a day for 30 days. At 2 hours after modeling, 1 μL of BrdU-labeled bone marrow mesenchymal stem cell suspension or an equivalent amount of PBS was injected into the spinal cord injury area at a time. At 1, 3, 7, 14, 21, and 30 days after modeling, the BBB score and Rivlin inclined plate test were used to evaluate the motor function of the rat’s hind limbs. At 7 days after modeling, the histopathological changes of spinal cord were observed by hematoxylin-eosin staining and Nissl staining. Immunohistochemical method was applied to detect the expression of glial fibrillary acidic protein, interleukin-1β and BrdU positive labeling rate in rat spinal cord tissue. Western blot assay was used to detect the expression of apoptosis-related proteins Bcl-2, Bax and Caspase-3 in rat spinal cord tissue. 
RESULTS AND CONCLUSION: (1) At 7, 14, 21, and 30 days after modeling, the BBB score and Rivlin inclined plate test results of the combination group, montelukast group and bone marrow mesenchymal stem cell group were significantly higher than those of the model group (P < 0.05). (2) At 7 days, , the inflammatory reaction and edema were reduced; the area of injury cavity and glial scar was reduced; and the structure of damaged segment was improved in combination group, montelukast group and bone marrow mesenchymal stem cell group. (3) At 7 days, the expressions of glial fibrillary acidic protein and interleukin-1β in combination group, montelukast group and bone marrow mesenchymal stem cell group were significantly lower than those in the model group (P < 0.05). The positive rate of BrdU in combination group was higher than that in bone marrow mesenchymal stem cell group (P=0.000). (4) At 7 days, the expression levels of Bax and Caspase-3 in combination group, montelukast group and bone marrow mesenchymal stem cell group were significantly lower than those in the model group (P < 0.05); the expression of Bcl-2 was significantly higher than that in the model group (P < 0.05). (5) All the above indexes in combination group were better than those in montelukast group and bone marrow mesenchymal stem cell group. (6) The results show that montelukast combined with bone marrow mesenchymal stem cells transplantation can significantly improve the neuromotor function of rats after spinal cord injury. The mechanism may be related to inhibiting local inflammatory response and glial cell proliferation, reducing the expression of apoptosis-related proteins, and increasing the survival rate of bone marrow mesenchymal stem cell transplantation.

Key words: stem cells, bone marrow mesenchymal stem cells, spinal cord injury, montelukast, glial fibrillary acidic protein, interleukin-1β, BrdU staining

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