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- W4220714960 abstract "Abstract NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is reportedly involved in periodontal pathogenesis. Pasteurella multocida toxin (PMT) is the major virulence factor of Pasteurella multocida strains, which belongs to the GNFR. The existence of GNFR and their toxin may aggravate periodontitis. Therefore, it’s important to unclose the regulatory mechanisms of PMT in periodontitis. However, the involvement of NLRP3 inflammasome and PMT in periodontitis remain unclear. The results showed that NLRP3 expression was increased in human and mice gingivae from periodontitis patients and periodontitis mice by immunohistochemical staining and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Nlrp3 -/- mice showed less periodontal bone loss and lower abundances of Pasteurella multocida by 16S rRNA sequencing. PMT promoted NLRP3 expressions by activating nuclear factor kappa light chain enhancer of B cells (NF-κB) pathway and activated NLRP3 inflammasome. This effect was reversed by NLRP3 inhibitor MCC950. Furthermore, PMT aggravated periodontal bone loss and inflammation in WT mice while MCC950 attenuated periodontal bone loss and inflammation. The Nlrp3 -/- periodontitis models with PMT local injection showed less bone loss and inflammation compared with WT periodontitis mice after PMT treatment. Taken together, our results showed that PMT aggravates periodontal response to the ligature by promoting NLRP3 expression and activating NLRP3 inflammasome, suggesting that NLRP3 may be an effective target for the treatment of periodontitis caused by GNFR and MCC950 may be a potential drug against this disease." @default.
- W4220714960 created "2022-04-03" @default.
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- W4220714960 date "2022-03-21" @default.
- W4220714960 modified "2023-09-27" @default.
- W4220714960 title "Pasteurella multocidia toxin aggravates ligatured-induced periodontal bone loss and inflammation via NOD-like receptor protein 3 inflammasome" @default.
- W4220714960 doi "https://doi.org/10.21203/rs.3.rs-1461888/v1" @default.
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