口腔医学研究 ›› 2021, Vol. 37 ›› Issue (1): 33-38.DOI: 10.13701/j.cnki.kqyxyj.2021.01.008

• 牙周病学研究 • 上一篇    下一篇

连翘苷对牙周炎大鼠p38 MAPK/c-Fos信号通路及破骨细胞活化的影响

苏娟娟1*, 朱永翠1, 张文玲2   

  1. 1.河南大学第一附属医院口腔科 河南 开封 475000;
    2.河南大学淮河医院口腔科 河南 开封 475000
  • 收稿日期:2020-05-11 出版日期:2021-01-28 发布日期:2021-01-22
  • 通讯作者: *苏娟娟,E-mail:juanjuansu384@163.com
  • 作者简介:苏娟娟(1983~ ),女,汉族,河南开封人,硕士,副主任医师,研究方向:口腔内科学。
  • 基金资助:
    河南省医学科技攻关计划联合共建项目(编号:2018020319)

Effects of Phillyrin on p38 MAPK/c-Fos Signal Pathway and Osteoclast Activation in Periodontitis Rats

SU Juanjuan1*, ZHU Yongcui1, ZHANG Wenling2   

  1. 1. Department of Stomatology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China;
    2. Department of Stomatology, Huaihe Hospital of Henan University, Kaifeng 475000, China
  • Received:2020-05-11 Online:2021-01-28 Published:2021-01-22

摘要: 目的: 探讨连翘苷对牙周炎大鼠p38丝裂原活化蛋白激酶(p38 MAPK)/c-Fos信号通路及破骨细胞活化的影响。方法: 建立牙周炎大鼠模型,随机分为模型组、连翘苷低剂量组、连翘苷中剂量组、连翘苷高剂量组、维生素C组,每组12只,另取12只设为对照组,分组处理后,亚甲蓝染色检测大鼠牙槽骨吸收(釉牙骨质界到牙槽嵴顶距离)情况;HE染色检测各组大鼠牙周组织病理形态;TRAP染色检测各组大鼠牙周组织中破骨细胞数目;酶联免疫吸附试验(ELISA)检测大鼠血清肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)水平;蛋白免疫印迹实验检测大鼠牙周组织p38 MAPK/c-Fos通路相关蛋白表达情况。结果: 与对照组相比,模型组大鼠牙周组织呈现上皮残缺、破裂,形态异常,牙周膜纤维排列紊乱,可见炎性细胞浸润等病理损伤,釉牙骨质界到牙槽嵴顶距离、破骨细胞数目、TNF-α、IL-6水平、牙周组织p38 MAPK/c-Fos通路相关蛋白c-Fos表达、p-p38 MAPK/p38 MAPK明显升高(P<0.05)。与模型组相比,连翘苷低、中、高剂量组及维生素C组大鼠牙周组织病理损伤减轻,釉牙骨质界到牙槽嵴顶距离、破骨细胞数目、TNF-α、IL-6水平、牙周组织c-Fos蛋白表达、p-p38 MAPK/p38 MAPK降低,且连翘苷各组呈剂量依赖性(P<0.05),连翘苷高剂量组与维生素C组相比,差异无统计学意义(P>0.05)。结论: 连翘苷可下调p38 MAPK/c-Fos信号通路,抑制牙周炎症及破骨细胞活化,减轻牙周组织损伤,改善牙周炎大鼠症状。

关键词: 连翘苷, 牙周组织, 炎症, p38 MAPK/c-Fos信号, 破骨细胞活化

Abstract: Objective: To investigate the effects of phillyrin on p38 MAPK/c-Fos signal pathway and osteoclast activation in periodontitis rats. Methods: The periodontitis rat model were established and randomly divided into groups: model group, low dose phillyrin group, middle dose phillyrin group, high dose phillyrin group, and vitamin C group, with 12 in each group, and another 12 rats were set as control group. After treatment, methylene blue staining was used to detect alveolar bone resorption (distance from the border of enamel cementum to the crest of alveolar ridge). HE staining was used to detect the periodontal pathological morphology. The number of osteoclasts in periodontal tissue was detected by TRAP staining. The levels of serum tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were detected by enzyme-linked immunosorbent assay (ELISA). The expression of p38 MAPK/c-Fos pathway related proteins was detected by Western blot. Results: Compared with the control group, the periodontal tissue of the model group showed epithelial defect, rupture, abnormal morphology, disordered arrangement of periodontal membrane fibers, inflammatory cell infiltration, and other pathological damage, and the distance from the border of enamel cementum to the crest of alveolar ridge, the number of osteoclasts, the levels of TNF-α and IL-6, and the expressions of p38 MAPK/c-Fos pathway related proteins c-Fos and p-p38 MAPK/p38 MAPK in periodontal tissues were significantly higher (P<0.05). Compared with the model group, the pathological damage of periodontal tissue in the low, middle, and high dose phillyrin groups and vitamin C group was alleviated, the distance from the border of enamel cementum to the crest of alveolar ridge, the number of osteoclasts, the levels of TNF-α and IL-6, the expression of c-Fos protein and p-p38 MAPK/p38 MAPK in periodontal tissues were significantly lower (P<0.05), and phillyrin groups were dose-dependent (P<0.05), while there was no significant difference between high dose phillyrin group and vitamin C group (P>0.05). Conclusion: Phillyrin can down-regulate p38 MAPK/c-Fos signal pathway, inhibit periodontitis and osteoclast activation, reduce periodontal tissue damage, and improve periodontitis symptoms in rats.

Key words: phillyrin, periodontal tissue, inflammation, p38 MAPK/c-Fos signal, osteoclast activation