食品科学 ›› 2019, Vol. 40 ›› Issue (11): 159-166.doi: 10.7506/spkx1002-6630-20180223-182

• 营养卫生 • 上一篇    下一篇

南极磷虾油对骨质疏松模型小鼠骨折愈合的促进作用

李媛媛,毛相朝,唐彭皓,李彩龙,于 朋,王静凤*   

  1. 中国海洋大学食品科学与工程学院,山东 青岛 266003
  • 出版日期:2019-06-15 发布日期:2019-06-28
  • 基金资助:
    山东省重点研发计划项目(2016YYSP017);现代农业产业技术体系建设专项(CARS-48)

Antarctic Krill Oil Enhances Fracture Healing in Osteoporotic Mouse Model

LI Yuanyuan, MAO Xiangzhao, TANG Penghao, LI Cailong, YU Peng, WANG Jingfeng*   

  1. College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
  • Online:2019-06-15 Published:2019-06-28

摘要: 目的:探究南极磷虾油(Antarctic krill oil,AKO)对骨质疏松模型小鼠骨折愈合的促进作用。方法:采用C57BL/6J雌性小鼠,通过双侧去卵巢术建立骨质疏松模型;随后行右胫开放性骨折手术并随机分为一般性骨折对照组、骨质疏松性骨折模型组、阳性对照组、AKO组。于骨折后5、11、24、35、56 d取材,动态分析AKO对小鼠血清相关指标、骨痂组织形态学、显微结构和生物力学以及软骨内成骨关键基因表达的影响。结果:酶联免疫吸附测定结果表明AKO能显著升高血清中血管内皮生长因子(vascular endothelial growth factor,VEGF)质量浓度及骨碱性磷酸酶活力;骨痂苏木精-伊红染色及微型计算机断层扫描结果显示AKO能够促进软骨痂向硬骨痂转化,并改善骨痂微结构,加速骨痂重塑;生物力学检测结果显示AKO可增强骨性骨痂生物力学性能;实时荧光定量聚合酶链式反应结果显示,AKO可显著提高血管入侵相关因子(VEGF、血小板衍生生长因子和血管紧张素1)的mRNA表达(P<0.05),显著降低软骨细胞增殖和肥大相关基因(聚集蛋白聚糖A g g r e c a n和Col10a)的表达(P<0.05),显著升高软骨基质降解因子MMP-13以及骨生成相关基因(Col1a、骨钙素和骨形态发生蛋白2)的表达(P<0.05),提示AKO可通过调控软骨内成骨关键基因的表达,加速软骨内骨化进程。结论:AKO通过促进软骨内成骨及骨痂重塑,加速骨质疏松模型小鼠骨折愈合,提高愈合质量。

关键词: 南极磷虾油, 骨质疏松性骨折, 骨折愈合, 软骨内成骨

Abstract: Objective: To investigate the effect of Antarctic krill oil (AKO) on fracture healing in an osteoporotic mouse model. Methods: Female C57BL/6J mice were ovariectomized to establish the animal model of osteoporosis. Then the mice were subjected to open fracture operation on the right tibial and randomly divided into four groups: control, osteoporotic fracture model, positive control and AKO groups. We dynamically observed the effect of AKO on serum biochemical indicators and callus histomorphology, microstructure and biomechanical properties at 5, 11, 24, 35 and 56 days post-fracture. In addition, we also investigated the effect of AKO on the expression of key genes involved in endochondrial ossification. Results: The results of enzyme-linked immunosorbent assay showed that AKO could significantly increase the serum levels of vascular endothelial growth factor (VEGF) and bone alkaline phosphatase. The HE staining and micro-computed tomography results showed that AKO could promote the transformation of cartilaginous callus into osseous callus, improved the microstructure of callus and accelerated callus remodeling. AKO could enhance biomechanical properties of bony callus. The quantitative real time polymerase chain reaction results showed that AKO significantly increased the mRNA expression of angiogenesis factors (VEGF, platelet derived growth factor and angiotensin 1) (P < 0.05), and decreased the expression of the genes associated with chondrocyte proliferation and hypertrophy (Aggrecan and Col10a) (P < 0.05). Furthermore, AKO significantly increased the mRNA expression of MMP-13 and osteogenesis-related genes (Col1a, OCN and bone morphogenetic protein (BMP-2)) (P < 0.05). These results suggested that AKO could accelerate the process of cartilage ossification and promote fracture healing by regulating the expression of key genes related to endochondral ossification. Conclusion: AKO can accelerate osteoporotic fracture healing and improve healing quality by promoting the process of cartilage ossification and callus remodeling.

Key words: Antarctic krill oil, osteoporosis fracture, fracture healing, cartilage ossification

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