Abstract | BACKGROUND: METHODS: A periodontitis mouse model was established by ligating the subgingival between the first and second molars in wild-type, TLR4-/- , and Myd88-/- mice. RESULTS: NAC-S2 did not affect the proportion of macrophages (CD11b+ F4/80+ ) or neutrophils (CD11b+ GR-1+ ) in the bone marrow. Mechanically, lipopolysaccharides (LPS), Zymosan A, or poly I: C induced tumor necrosis factor (TNF), interleukin (IL)-6, and IL-1β expression in bone marrow-derived macrophages (BMDMs) could be inhibited by NAC-S2. On the other hand, NAC-S2 suppressed the phosphorylation levels of IκB-α, p65, and IκB kinase (IKK)-β induced by LPS in BMDMs, while LPS induced phosphorylation of ERK1/2, p38, and transforming growth factor β-activated kinase 1 (TAK1) could not be affected by NAC-S2. In wild-type periodontitis mice, NAC-S2 administration decreased the cemento-enamel-junction-alveolar bone crest (CEJ-ABC) distance and the relative mRNA expression of TNF, IL-6, and IL-1β, while such phenomena could not be observed in TLR4 deficiency or Myd88 deficiency mice. CONCLUSIONS:
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Authors | Xinxin Sun, Yaru Sun, Sumin Cao, Xueli Liu |
Journal | Immunity, inflammation and disease
(Immun Inflamm Dis)
Vol. 11
Issue 8
Pg. e959
(08 2023)
ISSN: 2050-4527 [Electronic] England |
PMID | 37647428
(Publication Type: Journal Article)
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Copyright | © 2023 The Authors. Immunity, Inflammation and Disease published by John Wiley & Sons Ltd. |
Chemical References |
- polysulfide
- Acetylcysteine
- Lipopolysaccharides
- Toll-Like Receptor 4
- Tumor Necrosis Factor-alpha
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Topics |
- Animals
- Mice
- Acetylcysteine
(pharmacology)
- Lipopolysaccharides
(toxicity)
- Toll-Like Receptor 4
(genetics)
- Periodontitis
(drug therapy)
- Tumor Necrosis Factor-alpha
- Disease Models, Animal
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