中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (26): 4150-4155.doi: 10.12307/2021.113

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通络生骨胶囊对激素性股骨头坏死模型大鼠Toll样受体4信号通路的影响

刘金富1,曾  平2,农  焦2,范思奇2,钱晓芬1,冯程钦1,雷志强1,罗  钧1,黄佳兴1   

  1. 1广西中医药大学研究生学院,广西壮族自治区南宁市   530299;2广西中医药大学第一附属医院,广西壮族自治区南宁市   530023
  • 收稿日期:2020-07-14 修回日期:2020-07-16 接受日期:2020-09-01 出版日期:2021-09-18 发布日期:2021-04-28
  • 通讯作者: 曾平,教授,主任医师,广西中医药大学第一附属医院,广西壮族自治区南宁市 530023
  • 作者简介:刘金富,男,1994年生,广东省叶潭镇人,汉族,广西中医药大学在读硕士,主要从事中医药防治股骨头坏死的研究。
  • 基金资助:
    国家自然科学基金项目(81960876),项目负责人:曾平;广西地区自然科学基金项目(2017GXNSFAA198296),项目负责人:曾平;大数据库时代广西股骨头坏死临床数据库的建设(2018XK073),项目负责人:曾平

Effect of Tongluo Shenggu Capsule on toll-like receptor 4 signaling pathway in rats with steroid-induced osteonecrosis of the femoral head

Liu Jinfu1, Zeng Ping2, Nong Jiao2, Fan Siqi2, Qian Xiaofen1, Feng Chengqin1, Lei Zhiqiang1, Luo Jun1, Huang Jiaxing1   

  1. 1Graduate School, Guangxi University of Chinese Medicine, Nanning 530299, Guangxi Zhuang Autonomous Region, China; 2First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning 530023, Guangxi Zhuang Autonomous Region, China
  • Received:2020-07-14 Revised:2020-07-16 Accepted:2020-09-01 Online:2021-09-18 Published:2021-04-28
  • Contact: Zeng Ping, Professor, Chief physician, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning 530023, Guangxi Zhuang Autonomous Region, China
  • About author:Liu Jinfu, Master candidate, Graduate School, Guangxi University of Chinese Medicine, Nanning 530299, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    The National Natural Science Foundation of China, No.81960876 (to ZP); the Natural Science Foundation of Guangxi, No. 2017GXNSFAA198296 (to ZP); the Clinical Database Construction for Femoral Head Necrosis in Guangxi in the era of large databases, No. 2018XK073 (to ZP)

摘要:

文题释义:
Toll样受体4(TLR4)信号通路:TLR4信号通路的激活有助于宿主消除入侵病原体,但其过度激活也可以干扰免疫平衡而导致一些疾病的发生,如自身免疫性疾病、慢性炎症性疾病或癌症等。
骨稳态:是指在骨骼系统内,骨组织能够通过自我调节,维持骨重建中成骨细胞及其主导的骨形成和破骨细胞及其主导的骨吸收平衡,进而维持骨的各项生理指标及其功能活动在正常范围,保持骨骼系统整体功能的稳定和有序。

背景:前期药理学研究发现通络生骨胶囊修复激素性股骨头坏死的机制多样,但对Toll样受体4(Toll-link receptors 4,TLR4)信号通路的影响未见报道。
目的:基于TLR4信号通路探讨通络生骨胶囊治疗激素性股骨头坏死的分子机制。
方法:将60 只雌性SD大鼠随机分为正常组20 只和造模组40只,采用内毒素联合甲强龙建立大鼠激素性股骨头坏死(SONFH)模型,正常组注射等体积生理盐水;造模完成后随机抽取正常组5只、造模组10只在光镜下观察造模效果。将造模成功的30只大鼠随机平均分为2组,分别为造模组和干预组,每组15只。干预组予通络生骨胶囊水溶液0.4 g/kg每天灌胃1次,连续4周;激素组、正常组予等剂量生理盐水每天1 次灌胃4周。干预结束后取各组大鼠两侧股骨头,观察股骨头外形,进行病理学组织检测,采用Western Blot检测各组大鼠股骨头TLR4、MyD88、肿瘤坏死因子α和核因子κB蛋白表达。实验方案经广西中医药大学动物实验伦理委员会批准。
结果与结论:①正常组大鼠股骨头可见外观润滑有光泽,无变形塌陷;激素组大鼠股骨头无光泽,呈紫色,面积较大;干预组大鼠股骨头趋于正常;②苏木精-伊红染色结果发现,激素组股骨头骨小梁稀疏甚至断裂骨细胞核固缩溶解、消失,空骨陷窝数量最多,与正常组和干预组相比空骨陷窝率差异有显著性意义(P < 0.05);干预组可见骨小梁粗大、规则,细胞形态大多正常,较激素组有改善;③Western Blot检测结果显示,与激素组相比,正常组、干预组核因子κB、肿瘤坏死因子α、MyD88、TLR4蛋白表达量均明显降低(P < 0.05);干预组与正常组TLR4和MyD88的表达量差异无显著性意义(p > 0.05);④结果说明,通络生骨胶囊治疗激素性股骨头坏死的机制可能与抑制TLR4信号通路MyD88依赖型传递途径有关。

https://orcid.org/0000-0001-8312-0224 (刘金富)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程


关键词: 骨, 股骨头坏死, 激素性股骨头坏死, 通络生骨胶囊, TLR4, 信号通路, 大鼠

Abstract:
BACKGROUND: Early pharmacological studies have found that Tongluo Shenggu Capsule has various mechanisms for repairing steroid-induced osteonecrosis of the femoral head (SANFH), but its influence on the toll-like receptor 4 (TLR4) signaling pathway has not been documented.
OBJECTIVE: To investigate the molecular mechanism of Tongluo Shenggu Capsule in SANFH treatment based on the TLR4 signaling pathway.
METHODS: A total of 60 female Sprague-Dawley rats were randomly divided into a normal group (20 rats) and a model group (40 rats). Endotoxin combined with methylprednisolone was used to establish the SANFH rat model. The normal group was injected with normal saline at the same volume. After modeling, 5 rats from the normal group and 10 rats from the model group were selected for observation under light microscope. The 30 rats successfully modeled were randomly divided into two groups: a hormone group and an intervention group with 15 rats in each group. The intervention group was given Tongluo Shenggu Capsule solution 0.4 g/kg once a day for 4 weeks. The hormone group and the normal group were given the same dose of normal saline for 4 weeks, once a day. The hormone and normal groups were given the same amount of normal saline once a day for 4 weeks. After the end of intervention, bilateral femoral heads of rats in each group were taken for morphological observation and pathological detection. Expressions of TLR4, MyD88, tumor necrosis factor-β and nuclear factor-κB proteins were detected by western blot.
RESULTS AND CONCLUSION: The femoral head of rats in the normal group had a lustrous and smooth appearance without deformation or collapse. The femoral head of rats in the hormone group had a dull, purple appearance and a large area, while the femoral head of rats in the intervention group tended to be normal. Hematoxylin-eosin staining results showed that in the hormone group, trabeculae of the femoral head were sparse and even broken, bone nuclei were solidified, dissolved and disappeared, and the number of empty bone lacunae was the largest. Compared with the normal group and the intervention group, the difference in the rate of empty bone lacunae was significant (P < 0.05). In the intervention group, the bone trabeculae were large and regular, and the cell morphology was mostly normal, which was improved compared with the hormone group. Protein levels of nuclear factor-κB, tumor necrosis factor-β, MyD88 and TLR4 detected by western blot were significantly lower in the normal group and the intervention group than in the hormone group (P < 0.05). There was no significant difference in TLR4 and MyD88 expression between the intervention group and the normal group (P > 0.05). In conclusion, the mechanism of Tongluo Shenggu Capsule in SANFH treatment may be related to inhibition of MyD88-dependent TLR4 signaling pathway.

Key words: bone, osteonecrosis of the femoral head, steroid-induced osteonecrosis of the femoral head, Tongluo Shengu Capsule, TLR4, signaling pathway, rat

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