osmunda japonica
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2020 ◽  
Vol 44 (10) ◽  
Author(s):  
Xiaochen Liu ◽  
Xiuling Zhang ◽  
Xueting Zhang ◽  
Fengfeng Li ◽  
Hengtian Zhao

2020 ◽  
Vol 21 (7) ◽  
pp. 2453
Author(s):  
Jihyoun Seong ◽  
Jinkyung Lee ◽  
Yun Kyong Lim ◽  
Weon-Jong Yoon ◽  
Seunggon Jung ◽  
...  

Periodontal diseases are caused by bacterial infection and may progress to chronic dental disease; severe inflammation may result in bone loss. Therefore, it is necessary to prevent bacterial infection or control inflammation. Periodontal ligament fibroblasts (PDLFs) are responsible for the maintenance of tissue integrity and immune and inflammatory events in periodontal diseases. The formation of bacterial complexes by Fusobacterium nucleatum and Porphyromonas gingivalis is crucial in the pathogenesis of periodontal disease. F. nucleatum is a facultative anaerobic species, considered to be a key mediator of dental plaque maturation and aggregation of other oral bacteria. P. gingivalis is an obligate anaerobic species that induces gingival inflammation by secreting virulence factors. In this study, we investigated whether Osmunda japonica extract exerted anti-inflammatory effects in primary PDLFs stimulated by oral pathogens. PDLFs were stimulated with F. nucleatum or P. gingivalis. We showed that pro-inflammatory cytokine (IL-6 and IL-8) expression was induced by LPS or bacterial infection but decreased by treatment with O. japonica extract following bacterial infection. We found that the activation of NF-κB, a transcription factor for pro-inflammatory cytokines, was modulated by O. japonica extract. Thus, O. japonica extract has immunomodulatory activity that can be harnessed to control inflammation.


2020 ◽  
Vol 55 (7) ◽  
pp. 2851-2862
Author(s):  
Xiaochen Liu ◽  
Xiuling Zhang ◽  
Xueting Zhang ◽  
Fengfeng Li ◽  
Yaqin Tian ◽  
...  

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