中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (1): 49-53.doi: 10.3969/j.issn.2095-4344.2017.01.009

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

骨髓间充质干细胞移植对去卵巢骨质疏松大鼠骨密度的影响

陈光华,黄贵芝,林  颢,吴浩俊,陈  航   

  1. 广东医学院附属医院骨外科,广东省湛江市  524001
  • 修回日期:2016-11-02 出版日期:2017-01-08 发布日期:2017-03-15
  • 通讯作者: 陈航,主任医师,广东医学院附属医院骨外科,广东省湛江市 524001
  • 作者简介:陈光华,男,1980年生,广东省湛江市人,2015年广东医学院毕业,硕士,副主任医师,主要从事创伤骨科、骨质疏松方面的研究。
  • 基金资助:

    广东省湛江市2015科技计划项目(2015A01018)

Bone marrow mesenchymal stem cell transplantation increases bone mineral density of an ovariectomized rat model of osteoporosis

Chen Guang-hua, Huang Gui-zhi, Lin Hao, Wu Hao-jun, Chen Hang   

  1. Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China
  • Revised:2016-11-02 Online:2017-01-08 Published:2017-03-15
  • Contact: Chen Hang, Chief physician, Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China
  • About author:Chen Guang-hua, Master, Associate chief physician, Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China
  • Supported by:

    the 2015 Scientific Research Plan of Zhanjiang in Guangdong Province, No. 2015A01018

摘要:

文章快速阅读:

文题释义:
骨钙素:
又称骨γ-羧谷氨酸包含蛋白。该蛋白在骨矿化峰期之后才出现积聚。通过血清骨钙素可以了解成骨细胞,特别是新形成的成骨细胞的活动状态。骨钙素值随年龄的变化以及骨更新率的变化而不同。骨更新率越快,骨钙素值越高,反之降低。
骨密度:全称是骨骼矿物质密度,是骨骼强度的一个重要指标,是一个绝对值。在临床通常使用T值判断骨密度是否正常。T值是一个相对值,正常参考值在-1和+1之间。当T值低于-2.5时为不正常。骨密度是反映骨质疏松程度,预测骨折危险性的重要依据。

 

摘要
背景:
骨髓间质干细胞可向成骨细胞分化,移植后可向病变部位迁移等特性,使其在骨质疏松中的研究受到越来越多的关注和重视。
目的:观察骨髓间质干细胞移植对去卵巢骨质疏松大鼠骨密度的影响及其可能的作用机制。
方法:①采用全骨髓贴壁培养法,从幼年SD大鼠股骨和胫骨骨髓中分离培养骨髓间质干细胞;②将成年雌性大鼠30只随机分为3组:假手术组、卵巢切除组、卵巢切除+骨髓间质干细胞移植组,每组10只。待骨质疏松模型建立成功后,卵巢切除+骨髓间质干细胞移植组大鼠经尾静脉注射含3.5×109 L-1骨髓间质干细胞的PBS溶液(80 μL/kg),其他2组注射等量的PBS溶液;③细胞移植第2周,采用双能X射线骨密度仪测量各组大鼠股骨骨密度、腰椎骨密度及全身骨密度,并测定血清钙、磷、碱性磷酸酶及骨钙素水平,micro-CT扫描进行胫骨组织微结构形态计量学分析。
结果与结论:①卵巢切除组大鼠股骨骨密度、腰椎骨密度及全身骨密度显著低于假手术组;卵巢切除组大鼠血清中钙、骨钙素水平也显著低于假手术组,而磷、碱性磷酸酶水平明显升高,差异有显著性意义(P < 0.05或P < 0.01),以上表明骨质疏松大鼠模型成功制备;②与卵巢切除组大鼠相比,卵巢切除+骨髓间质干细胞移植组大鼠股骨、腰椎及全身骨密度均明显增加,血清中钙、骨钙素水平亦显著升高,而血清磷、碱性磷酸酶水平下降,差异均有显著性意义(P < 0.05);③与卵巢切除组比较,卵巢切除+骨髓间质干细胞移植组大鼠的骨体积分数、骨小梁数量和骨小梁厚度均显著增加,差异有显著性意义(P < 0.05);④结果表明,骨髓间质干细胞移植能够提高卵巢切除骨质疏松大鼠骨密度,促进骨形成。

 

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:
0000-0001-5519-9369(陈光华)

关键词: 干细胞, 移植, 骨质疏松, 骨髓间质干细胞, 骨密度, 动物模型, 细胞移植

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cells (BMSCs) can be differentiated into osteoblasts, and migrate to lesion sites after transplantation, which have attracted more and more attentions in the research of osteoporosis.
OBJECTIVE: To study the effect of BMSCs transplantation on bone mineral density in an ovariectomized rat model of osteoporosis and its possible mechanism of action.
METHODS: Using the whole bone marrow culture method, BMSCs were isolated from the femur and tibia of juvenile Sprague-Dawley rats. Thirty adult female rats were randomly divided into three groups: control group, ovariectomized group, and cell transplantation group, with 10 rats in each group. Osteoporosis models were made in ovariectomized and cell transplantation group. Then, PBS solution containing 3.5×109/L BMSCs at a dose of 80 μL/kg was injected via the tail vein into the rats in the cell transplantation group, while the same volume of PBS solution was injected in the other two groups. Two weeks later, dual-energy X-ray absorptiometry was used to measure bone mineral density of the femur, lumbar spine and whole body. Serum levels of calcium, phosphorus, alkaline phosphatase and osteocalcin were determined. Micro-CT was used for morphometric analysis of the tibial microstructure.
RESULTS AND CONCLUSION: After ovariectomy, there was a significant reduction in the bone mineral density of the rat femur, lumbar spine and whole body as well as the levels of serum calcium and osteocalcin; however, the phosphorus and alkaline phosphatase levels were increased significantly (P < 0.05 or P < 0.01). These findings indicate the successful preparation of the osteoporosis rat model. Compared with the ovariectomized group, the bone mineral density of the rat femur, lumbar spine or whole body was significantly higher in the cell transplantation group, and significantly increased serum calcium and osteocalcin and significantly decreased phosphorus and alkaline phosphatase levels were also found in the cell transplantation group (P < 0.05). Additionally, the bone volume fraction, number of trabeculae and thickness of trabecular bone were significantly increased in the cell transplantation group compared with the ovariectomized group (P < 0.05). To conclude, our results show that BMSCs can improve the bone mineral density of osteoporosis rats induced by ovariotomy, and thereby promote new bone formation.

 

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

Key words: Osteoporosis, Postmenopausal, Bone Marrow, Mesenchymal Stem Cell Transplantation, Bone Density, Tissue Engineering

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