China Journal of Oral and Maxillofacial Surgery ›› 2018, Vol. 16 ›› Issue (2): 97-101.doi: 10.19438/j.cjoms.2018.02.001

• Original Articles • Previous Articles     Next Articles

Inhibition of chitosan oligosaccharide on skull resorption in mice induced by lipopolysaccharides

GUO Ke1, HE Jia-jia2, LIU Zong-lin1, ZHANG Yao-sheng1, WANG Wen-chao1, WANG Ye-xin3, XU Wei-feng3, ZHANG Shan-yong3   

  1. 1.College of Stomatology, Weifang Medical University. Weifang 261053, Shandong Province;
    2.Stomatological Hospital of Nantong City. Nantong 226001, Jiangsu Province;
    3.Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine. Shanghai 200011,China;
  • Received:2017-11-13 Revised:2018-01-03 Online:2018-03-20 Published:2018-04-08

Abstract: PURPOSE: To study the effect of low molecular weight chitosan (low-molecular chitosan oligosaccharide, LMCOS) on lipopolysaccharides (LPS) -induced bone resorption in mice. METHODS: Six-week c57/bl6 male mice were randomly divided into 5 groups: phosphate buffer saline (PBS) group, LPS group, LPS+0.005% LMCOS group, LPS+0.05% LMCOS group and LPS+0.5% LMCOS group. There were 5 mice in each group, LPS was used at 10 mg/kg. After mild anesthesia, 300 μL corresponding reagents were injected into the skull bone. The mice were injected 3 times a week and sacrificed 2 weeks later. The skull bone was removed for micro-CT scan, H-E staining, TRAP staining. SPSS21.0 software package was used for statistical analysis. Bone damage area, osteoclast formation was observed and recorded. RESULTS: After LMCOS was added to LPS-induced skull resorption, bone destruction area decreased obviously; and with the increase of LMCOS concentration, bone destruction area and number of osteoclasts decreased gradually. CONCLUSIONS: LMCOS can inhibit the damage of skull bone in LPS-induced mice, which may have a therapeutic effect on osteolytic diseases.

Key words: Chitosan oligosaccharide, Lipopolysaccharides, Micro-CT, TRAP, Bone resorption

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