The Journal of Korean Medicine (대한한의학회지)

The Society of Korean Medicine (대한한의학회)
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The effects of Eclipta Prostrata L.(Ecliptae Herba) on periodontitis rats

한련초 추출물의 치주염 개선 효과에 관한 연구

  • Park, Jun Hyuk (Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University) ;
  • Lee, Haesu (Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University) ;
  • Yang, Woong Mo (Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University)
  • Received : 2017.11.20
  • Accepted : 2018.03.26
  • Published : 2018.03.31
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Abstract

Objectives: Periodontitis is an inflammatory disease with the destruction of periodontal ligament, alveolar bone loss and inflammation of gingva, leading to teeth loss. Eclipta prostrata L. (Ecliptae Herba) has been used to treat the inflammatory disease as a Korean traditional medicine. The aim of this study is to investigate the effects of E. prostrata L. on periodontitis. Methods: E. prostrata L. was extracted with water and lyophilized. The aqueous extract of E. prostrata L. (EP) was topically applied to the periodontal lesion for 2 weeks. To induce the periodontitis, a 3-0 nylon ligature was placed around the cervix of the lower first molar in rat. Rats were divided into 3 groups (n = 7); NL group (non-ligatured and non-treated), L group (ligatured and vehicle-treated) and EP group (ligatured and EP-treated). After sacrifice, the mandibles was dissected and stained with methylene blue solution to analyze the alveolar bone loss. The expression of MMP-9 was determined in gingival tissues. To confirm the effect of EP on recovery of gingiva, mRNA expressions of type I pro-collagen and MMP-9 levels were investigated in LPS-treated HS68 fibroblast cells. In addition, inflammatory mediators were evaluated in LPS-treated RAW264.7 cells. Results: Alveolar bone loss was significantly inhibited by EP treatment. The mRNA expression of MMP-9 was attenuated in rats treated with EP. In addition, treatment with EP increased the expression of type I pro-collagen, while the expression of MMP-9 was decreased in LPS-stimulated HS68 fibroblast cells. Furthermore, EP down-regulated the LPS-induced IL-6, $TNF-{\alpha}$, COX-2 and iNOS production in RAW264.7 cells. Conclusions: These results suggest that EP have ameliorative effects on periodontitis through inhibiting alveolar bone loss and modulating the inflammatory mediators. Therefore, E. prostrata L. may be an alternative on patients with periodontitis.

Keywords

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