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Int. J. Mol. Sci. 2016, 17(9), 1516;

Alliin Attenuated RANKL-Induced Osteoclastogenesis by Scavenging Reactive Oxygen Species through Inhibiting Nox1

Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No. 30, Chongqing 400038, China
Student Camp Four, Third Military Medical University, Chongqing 400038, China
Author to whom correspondence should be addressed.
Academic Editor: Maurizio Battino
Received: 16 June 2016 / Revised: 21 August 2016 / Accepted: 6 September 2016 / Published: 20 September 2016
(This article belongs to the Special Issue The Mechanism of Action of Food Components in Disease Prevention)
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The healthy skeleton requires a perfect coordination of the formation and degradation of bone. Metabolic bone disease like osteoporosis is resulted from the imbalance of bone formation and/or bone resorption. Osteoporosis also reflects lower level of bone matrix, which is contributed by up-regulated osteoclast-mediated bone resorption. It is reported that monocytes/macrophage progenitor cells or either hematopoietic stem cells (HSCs) gave rise to multinucleated osteoclasts. Thus, inhibition of osteoclastic bone resorption generally seems to be a predominant therapy for treating osteoporosis. Recently, more and more natural compounds have been discovered, which have the ability of inhibiting osteoclast differentiation and fusion. Alliin (S-allyl-l-cysteine sulfoxides, SACSO) is the major component of aged garlic extract (AGE), bearing broad-spectrum natural antioxidant properties. However, its effects on bone health have not yet been explored. Hence, we designed the current study to explore its effects and role in receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclast fusion and differentiation. It was revealed that alliin had an inhibitory effect in osteoclasteogenesis with a dose-dependent manner via blocking the c-Fos-NFATc1 signaling pathway. In addition, alliin decreased the generation of reactive oxygen species (ROS) and down-regulated the expression of NADPH oxidase 1 (Nox1). The overall results revealed that alliin could be a potential therapeutic agent in the treatment of osteoporosis. View Full-Text
Keywords: alliin; osteoclast; reactive oxygen species; Nox1 alliin; osteoclast; reactive oxygen species; Nox1

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Chen, Y.; Sun, J.; Dou, C.; Li, N.; Kang, F.; Wang, Y.; Cao, Z.; Yang, X.; Dong, S. Alliin Attenuated RANKL-Induced Osteoclastogenesis by Scavenging Reactive Oxygen Species through Inhibiting Nox1. Int. J. Mol. Sci. 2016, 17, 1516.

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