中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (1): 53-58.doi: 10.3969/j.issn.2095-4344.0410

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

骨髓间充质干细胞局部移植联合雌二醇肌注治疗脊髓损伤

卜志勇1,胡良蛟1,李 晨1,李安军2   

  1. 1湖北医药学院附属人民医院白浪院区(骨科中心),湖北省十堰市 442000;2湖北医药学院附属人民医院/十堰市人民医院脊柱外科,湖北省十堰市 442000
  • 修回日期:2017-08-07 出版日期:2018-01-08 发布日期:2018-01-08
  • 通讯作者: 李安军,硕士,副主任医师,湖北医药学院附属人民医院/十堰市人民医院脊柱外科,湖北省十堰市 442000
  • 作者简介:卜志勇,男,1976年生,湖北省竹溪县人,2011年湖北中医药大学毕业,硕士,副教授,副主任医师,主要从事脊柱脊髓疾病的诊断与治疗。
  • 基金资助:

    2015年度湖北省教育厅科学研究计划指导性项目(B2015176)

Intramuscular injection of estradiol combined with bone marrow mesenchymal stem cell transplantation for spinal cord injury

Bu Zhi-yong1, Hu Liang-jiao1, Li Chen1, Li An-jun2   

  1. 1Bailang Branch, Affiliated People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China; 2Department of Spinal Surgery, Affiliated People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • Revised:2017-08-07 Online:2018-01-08 Published:2018-01-08
  • Contact: Li An-jun, Master, Associate chief physician, Department of Spinal Surgery, Affiliated People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • About author:Bu Zhi-yong, Master, Associate professor, Associate chief physician, Bailang Branch, Affiliated People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • Supported by:

    the Scientific Research Program Guidance Project of Hubei Provincial Department of Education in 2015, No. B2015176

摘要:

文章快速阅读:

文题释义:
超氧化物歧化酶:
是一种源于生命体的活性物质,能清除生物体在新陈代谢过程中产生的有害物质。作为一种新型酶制剂,它在生物体内分布极广。它可对抗和阻断因氧自由基对细胞造成的损伤,并及时修复受损细胞。通过催化反应将有害的超氧化物质转化为过氧化氢。超氧化物歧化酶水平升高提示机体抗氧化能力增强。
丙二醛:在生物体内,自由基作用于脂质发生过氧化反应,氧化终产物即为丙二醛,会引起蛋白质、核酸等生物大分子的交联聚合,且具有一定的细胞毒性,在体外可影响线粒体呼吸链复合物及线粒体内关键酶活性。丙二醛是膜脂过氧化最重要的产物之一,它的产生还能加剧膜的损伤,因此,可通过丙二醛了解膜脂过氧化的程度。丙二醛水平降低提示机体氧化应激程度减轻,抗氧化能力增强。
细胞凋亡:是指为维持内环境稳定,由基因控制的细胞自主的有序的死亡。细胞凋亡与细胞坏死不同,细胞凋亡不是一件被动的过程,而是主动过程,涉及一系列基因的激活、表达以及调控等作用,它并不是病理条件下自体损伤的现象,而是为了更好地适应生存环境而主动争取的一种死亡过程。
氧化应激反应:机体在遭受各种有害刺激时,体内高活性分子如活性氧自由基产生过多,氧化程度超出氧化物的清除,氧化系统和抗氧化系统失衡,倾向于氧化,导致中性粒细胞炎性浸润,蛋白酶分泌增加,产生大量氧化中间产物,从而导致组织损伤。氧化应激是由自由基在体内产生的一种负面作用,并被认为是导致衰老和疾病的一个重要因素。

 

摘要
背景:
雌激素在预防脊髓继发性损伤、保护神经功能方面具有重要作用,并且雌激素在体外能抑制骨髓间充质干细胞凋亡,但是将雌激素与骨髓间充质干细胞联合应用于治疗脊髓损伤尚未见相关报道。
目的:探讨雌二醇肌注联合骨髓间充质干细胞局部移植治疗脊髓损伤的效果与机制。
方法:SD大鼠144只随机分为联合组、骨髓间充质干细胞组、雌二醇组和对照组。建立脊髓损伤模型后,分别于损伤中心移植6×106个(60 μL)骨髓间充质干细胞或无菌PBS,肌注雌二醇250 μg/kg或生理盐水,移植后进行相关指标检测。
结果与结论:①造模后1,4周,联合组的行为学评分都明显高于其他3组(P < 0.05);②移植后3,7 d联合组的超氧化物歧化酶水平明显高于其他3组,而丙二醛水平明显低于其他3组,差异有显著性意义(P < 0.05);③移植后3,7 d联合组的损伤脊髓细胞凋亡率明显低于其他3组(P < 0.05);④结果表明,雌二醇能减轻脊髓损伤的继发性细胞凋亡,抑制氧化应激反应,有助于骨髓间充质干细胞移植后损伤脊髓运动功能的恢复。

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
ORCID: 0000-0003-2710-921X(卜志勇)

关键词: 干细胞, 脊髓损伤, 雌二醇, 骨髓间充质干细胞, 细胞凋亡, 氧化应激反应

Abstract:

BACKGROUND: Even though estrogen can prevent secondary spinal cord injury, exert a neuroprotective role, and inhibit apoptosis in mesenchymal stem cells in vitro, little is reported on the combined use of estrogen and bone marrow mesenchymal stem cells (BMSCs) in the treatment of spinal cord injury.
OBJECTIVE: To investigate the effects and mechanism of s intramuscular injection of estradiol combined with BMSCs in the treatment of spinal cord injury.
METHODS: One hundred and forty-four Sprague-Dawley rats were randomly divided into four groups: combined group, BMSCs group, estradiol group and control group. After the establishment of spinal cord injury model, the rats were given intramuscular injection of estradiol 250 µg/kg estradiol combined with 6×106 BMSCs (60 μL), BMSCs, estradiol or PBS in different groups, respectively. After transplantation, related indicators were detected.
RESULTS AND CONCLUSION: At 1 and 4 weeks after modeling, the behavioral scores in the combined group were significantly higher than those in the other three groups (P < 0.05). At 3 and 7 days after transplantation, superoxide dismutase levels in the combined group were significantly higher than those in the other three groups, but the malondialdehyde levels were lowest in the combined group (P < 0.05). At 3 and 7 days after transplantation, the apoptotic rate in the spinal cord tissues was significantly lower in the combined group than the other three groups (P < 0.05). To conclude, estradiol can alleviate secondary cell apoptosis and inhibit oxidative stress after spinal cord injury, which contributes to the spinal motor function recovery after BMSCs transplantation.

Key words: Spinal Cord Injuries, Estradiol, Bone Marrow, Mesenchymal Stem Cell Transplantation, Tissue Engineering

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