中国临床解剖学杂志 ›› 2023, Vol. 41 ›› Issue (2): 162-171.doi: 10.13418/j.issn.1001-165x.2023.2.08

• 实验研究 • 上一篇    下一篇

基于Nrf2通路探讨松脂醇二葡萄糖苷改善小鼠骨质疏松的机制研究

黄星翔1,    钟超2*,    叶华2,    徐春贻3,    刘云飞4,    蒋璐4   

  1. 电子科技大学    1.医学院临床医学,  成都   611731,    2.附属医院(四川省人民医院)中医骨科,  
    3.附属医院骨科,    4.附属医院麻醉科,  成都   610072
  • 收稿日期:2021-11-27 出版日期:2023-03-25 发布日期:2023-04-11
  • 通讯作者: 钟超, E-mail:chaozhong1981@163.com
  • 作者简介:黄星翔(2000-),男,广西南宁人,本科,研究方向:骨质疏松症防治,E-mail:17844531678@163.com
  • 基金资助:
    四川省卫计委科研课题(16PJ433);成都市科技局科研课题(2021-YF05-00742-SN)

Action mechanism of pinoresinol diglucoside on improving osteoporosis in mice based on Nrf2 pathway

Huang Xingxiang1, Zhong Chao2*, Ye Hua2, Xu Chunyi3, Liu Yunfei4, Jiang Lu4   

  1. 1. Clinical Medicine, School of Medicine, University of Electronic Science and Technology of China, Chengdu 611731, China;  2. Department of TCM Orthopedics,the Affiliated Hospital of University of Electronic Science and Technology of China (Sichuan Provincial People's Hospital), Chengdu 610072, China; 3. Department of Orthopedics,the Affiliated Hospital of University of Electronic Science and Technology of China (Sichuan Provincial People's Hospital), Chengdu 610072, China;  4. Department of Anesthesiology, the Affiliated Hospital of University of Electronic Science and Technology of China (Sichuan Provincial People's Hospital), Chengdu 610072, China 
  • Received:2021-11-27 Online:2023-03-25 Published:2023-04-11

摘要: 目的    分析松脂醇二葡萄糖苷(Pinoresinol diglucoside,PD)改善骨质疏松的作用机制。  方法    微型CT分析小鼠小梁骨体积/总体积(bone volume/total volume,BV/TV)、平均小梁厚度(average trabecular thickness,Tb.Th)、平均小梁数目(average number of trabeculae,Tb.N)和平均小梁间距(average trabecular spacing,Tb.Sp);HE染色检测骨组织损伤;TRAP染色分析成骨细胞数量/骨周长(number of bone cells/bone circumference,N.Ob/B.Pm)、空泡率以及破骨细胞表面/骨表面百分比(osteoclast surface/bone surface,Ocs/BS);ELISA检测碱性磷酸酶(alkaline phosphatase,ALP)、抗酒石酸酸性磷酸酶(tartrate-resistant acid phosphatase,TRAP)相对活性,超氧化物歧化酶(Superoxide dismutase,SOD)、丙二醛(Malondialdehyde,MDA)和谷胱甘肽(glutathione,GSH)含量;Wb检测核转录因子红细胞系2相关因子2(Nuclear factor erythroid-2-related factor 2,Nrf2)和HO-1表达。  结果   与假手术组相比,模型组小鼠骨丢失量增加,BV/TV、Tb.Th、Tb.N、N.Ob/B.Pm、ALP相对活性、SOD、GSH、Nrf2和HO-1表达水平明显下降,Tb.Sp、空泡率、Ocs/BS、TRAP相对活性和MDA水平明显上升(P<0.05);E2组和PD组小鼠与模型组小鼠变化趋势完全相反(P<0.05),PD组和E2组小鼠上述指标无显著差异(P>0.05)。  结论    PD可通过激活Nrf2信号通路改善小鼠骨质疏松症状。

关键词: 松脂醇二葡萄糖苷; ,  , 骨质疏松; ,  , 核转录因子红细胞系2相关因子2; ,  , 成骨细胞; ,  , 破骨细胞; ,  , 氧化应激

Abstract: Objective    To analyze the action mechanism of pinoresinol diglucoside (PD) on improving osteoporosis.   Methods    The trabecular bone volume/total volume (BV/TV), average trabecular thickness (Tb.Th), average number of trabeculae (Tb.N) and average trabecular spacing (Tb.Sp) were analyzed by micro-CT. The damage of bone tissues was detected by HE staining. Number of bone cells/bone circumference (N.Ob/B.Pm), vacuole rate and osteoclast surface/bone surface (Ocs/BS) were analyzed by TRAP staining. The relative activities of alkaline phosphatase (ALP) and tartrate-resistant acid phosphatase (TRAP), levels of superoxide dismutase (SOD), malondialdehyde (MDA) and glutathione (GSH) were detected by ELISA. The expressions of Nuclear factor erythroid-2-related factor 2 (Nrf2) and HO-1 were detected by Western Blotting.     Results    Compared with sham operation group, bone loss was increased in model group, BV/TV, Tb.Th, Tb.N, N.Ob/B.Pm, relative activity of ALP, SOD, GSH, Nrf2 and HO-1 expression levels were significantly decreased, Tb.Sp, vacuole rate, Ocs/BS, relative activity of TRAP and MDA level were significantly increased (P<0.05). The changes in E2 group and PD group were completely opposite to those in model group (P<0.05). There was no significant difference in the above indexes between PD group and E2 group (P>0.05).    Conclusions   PD can improve osteoporosis in mice by activating Nrf2 signaling pathway. 

Key words: Pinoresinol diglucoside; ,  Osteoporosis; ,  Nuclear factor erythroid-2-related factor 2, Osteoblast; ,  , Osteoclast; ,  , Oxidative stress

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