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2017 ; 8
(ä): 626
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Nardosinone Suppresses RANKL-Induced Osteoclastogenesis and Attenuates
Lipopolysaccharide-Induced Alveolar Bone Resorption
#MMPMID28955231
Niu C
; Xiao F
; Yuan K
; Hu X
; Lin W
; Ma R
; Zhang X
; Huang Z
Front Pharmacol
2017[]; 8
(ä): 626
PMID28955231
show ga
Periodontitis is a chronic inflammatory disease that damages the integrity of the
tooth-supporting tissues, known as the periodontium, and comprising the gingiva,
periodontal ligament and alveolar bone. In this study, the effects of nardosinone
(Nd) on bone were tested in a model of lipopolysaccharide (LPS)-induced alveolar
bone loss, and the associated mechanisms were elucidated. Nd effectively
suppressed LPS-induced alveolar bone loss and reduced osteoclast (OC) numbers in
vivo. Nd suppressed receptor activator of nuclear factor-?B ligand
(RANKL)-mediated OC differentiation, bone resorption, and F-actin ring formation
in a dose-dependent manner. Further investigation revealed that Nd suppressed
osteoclastogenesis by suppressing the ERK and JNK signaling pathways, scavenging
reactive oxygen species, and suppressing the activation of PLC?2 that
consequently affects the expression and/or activity of the OC-specific
transcription factors, c-Fos and nuclear factor of activated T-cells cytoplasmic
1 (NFATc1). In addition, Nd significantly reduced the expression of OC-specific
markers in mouse bone marrow-derived pre-OCs, including c-Fos, cathepsin K
(Ctsk), VATPase d2, and Nfatc1. Collectively, these findings suggest that Nd has
beneficial effects on bone, and the suppression of OC number implies that the
effect is exerted directly on osteoclastogenesis.