Abstract

Periodontitis is an infectious inflammation in the gums characterized by loss of periodontal ligaments and alveolar bone. Its persistent inflammation could result in tooth loss and other health issues. Ixeris dentata (IXD) and Lactobacillus gasseri media (LGM) demonstrated strong antioxidant activity, which may prevent oxidative and inflammatory periodontitis. Here, IXD and LGM extracts were investigated for antioxidative activity against oral discomfort and evaluated for their synergistic effect against oxidative and inflammatory periodontitis in a mouse model. IXD/LGM suppressed pro-inflammatory cytokines like interleukin (IL)-1β, IL-6, and TNF-α. Additionally, it reduced pro-inflammatory mediators, nitric oxide, iNOS (inducible nitric oxide synthase), and COX-2 (cyclooxygenase-2) and enhanced AKT, Nrf2, and HO-1 activation. Similarly, IXD/LGM treatment elevated osteogenic proteins and mRNAs; alkaline phosphatase, collagen type 1 (COL1), osteopontin (OPN), and runt-related transcription factor 2 (RUNX2). Hematoxylin and Eosin (H&E) staining and micro-CT analysis confirm the positive impact of IXD/LGM on the periodontal structure and its associated inflammation. These findings demonstrate that IXD/LGM inhibits oxidative stress, periodontal inflammation, and its resultant alveolar bone loss in which Akt (also known as protein kinase B)-nuclear factor-erythroid 2-related factor 2 (Nrf2)-hemoxygenase-1 (HO-1) signaling is involved. Thus, IXD/LGM is a potential candidate against oxidative/inflammatory stress-associated periodontitis.

Details

Title
Ixeris dentata and Lactobacillus gasseri media protect against periodontitis through Nrf2-HO-1 signalling pathway
Author
Lee, Hwa-Young 1 ; Lee, Geum-Hwa 2 ; Kim, Ji-Hyun 3 ; Cheng, Jinhua 4 ; Cho, Joo-Hyung 4 ; Suh, Joo-Won 4 ; Chae, Han-Jung 5 

 Jeonbuk National University Hospital, Non-Clinical Evaluation Center Biomedical Research Institute, Jeonju, South Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320); Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320) 
 Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320) 
 Jeonbuk National University Hospital, Non-Clinical Evaluation Center Biomedical Research Institute, Jeonju, South Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320) 
 Myongji University, Myongji Bioefficacy Research Center, Yongin, Republic of Korea (GRID:grid.410898.c) (ISNI:0000 0001 2339 0388) 
 Jeonbuk National University Hospital, Non-Clinical Evaluation Center Biomedical Research Institute, Jeonju, South Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320); Jeonbuk National University, School of Pharmacy, Jeonju, South Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320) 
Pages
12861
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2847571049
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.