中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (28): 5113-5119.doi: 10.3969/j.issn.2095-4344.2013.28.003

• 骨组织构建 bone tissue construction • 上一篇    下一篇

去势大鼠血清血管内皮生长因子水平和骨密度的相关性

鲍小明,王  云,侯永新,李  军,张  民,卫小春   

  1. 山西医科大学第二医院骨科,山西省太原市  030001
  • 出版日期:2013-07-09 发布日期:2013-07-09
  • 通讯作者: 张民,博士,副主任医师,山西医科大学第二医院骨科,山西省太原市 030001 zhangminty@yahoo.com.cn
  • 作者简介:鲍小明,男,1984年生,陕西省延安市人,汉族,山西医科大学在读硕士,主要从事骨与关节损伤方面的研究。 sxmu2010@126.com
  • 基金资助:

    山西省科技攻关项目(20100311098-2)

Correlation between bone mineral density and serum vascular endothelial growth factor levels in ovariectomized rats

Bao Xiao-ming, Wang Yun, Hou Yong-xin, Li Jun, Zhang Min, Wei Xiao-chun   

  1. Department of Orthopedics, the Second Hospital of Shanxi Medical University, Taiyuan  030001, Shanxi Province, China
  • Online:2013-07-09 Published:2013-07-09
  • Contact: Zhang Min, M.D., Associate chief physician, Department of Orthopedics, the Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China zhangminty@yahoo.com.cn
  • About author:Bao Xiao-ming, Studying for master’s degree, Department of Orthopedics, the Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China sxmu2010@126.com
  • Supported by:

    Scientific and Technological Projects of Shanxi Province, No. 20100311098-2*

摘要:

背景:血管内皮生长因子在促进骨质疏松性骨折愈合中发挥重要作用,而它是否影响骨密度变化还没明确。
目的:观察去势大鼠血清血管内皮生长因子水平和骨密度及成骨细胞变化的相关性。
方法:SD雌性大鼠40只随机数字表法均分为去势组和对照组,3个月后测大鼠全身、腰椎及股骨骨密度。大鼠ELISA试剂盒测血清中血管内皮生长因子的水平,同时两组大鼠股骨干骺端固定,脱钙,脱水、石蜡包埋、切片,苏木精-伊红染色,每切张片随意取5个视野(10×40)行股骨远侧干骺端成骨细胞计数在光学显微镜。
结果与结论:去势3个月后大鼠体质量明显增加(P < 0.05),去势组全身、腰椎及股骨骨密度较对照组全身、腰椎及股骨骨密度降低(P < 0.05),表明骨质疏松的模型建立。而去势大鼠和对照大鼠血管内皮生长因子水平比较差异无显著性意义(P > 0.05),去势组及对照组的成骨细胞数量无明显差异(P > 0.05),去势组及对照组骨密度与成骨细胞数及血清血管内皮生子水平无相关性。提示去势大鼠的骨密度下降,体质量升高,而去势大鼠骨密度的降低与血清血管内皮生长因子变化可能无关。

关键词: 组织构建, 骨组织构建, 去势大鼠, 骨质疏松, 血管内皮生长因子, 成骨细胞, 骨密度, 股骨干骺端, 省级基金

Abstract:

BACKGROUND: Vascular endothelial growth factor play an important role in promoting healing of osteoporotic fractures, but whether it can affect the bone mineral density is not clear.

OBJECTIVE: To observe the correlation between serum vascular endothelial growth factor, bone mineral density and the number of osteoblasts in the ovariectomized rats.

METHODS: Forty female Sprague-Dawley rats were randomly divided into ovariectomized group and control group. After 3 months, the bone mineral density of the whole body, femur and lumbar spine was measured. Rat enzyme-linked immunosorbent assay kit was used to measure the level of serum vascular endothelial growth factor. Then, the rats in two groups received femoral metaphyseal fixation, decalcified, dehydrated, embeding in paraffin, slicing and hematoxylin-eosin staining. Each slice was free to take five fields of view (10×40) in order to count the osteoblasts of femur distal metaphysis under optical microscope.

RESULTS AND CONCLUSION: After ovariectomized for 3 months, the rats body mass was increased significantly (P < 0.05), and the bone mineral density of the whole body, femur and lumbar spine in the ovariectomized group was lower than that in the control group (P < 0.05), indicating the successful establishment of osteoporosis model. There was no significant difference in vascular endothelial growth factor level between the ovariectomized group and the control group (P > 0.05), and the difference of the osteoblast number between ovariectomized group and control group was not significant (P > 0.05). This indicated that there was no correlation between bone mineral density and the number of osteoblasts and vascular endothelial growth factor level in the ovariectomized group and the control group. These findings suggest that the bone mineral density is reduced and the body mass is increased in the ovariectomized rats, and the reduced bone mineral density of ovariectomized rats may be irrelevant with the change of serum vascular endothelial growth factor.

Key words: tissue construction, bone tissue construction, ovariectomized rat, osteoporosis, vascular endothelial growth factor, osteoblasts, bone mineral density, femoral metaphysic, provincial grants-supported paper

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