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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (7): 721-727.doi: 10.12092/j.issn.1009-2501.2018.07.001

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Effects of dihydromyricetin on wear-particle-induced osteolysis in murine calvarial model

HUANG Donghui, ZHENG Hangsheng   

  1. Department of Orthopaedic Surgery, Hangzhou Third People's Hospital, Hangzhou 310009, Zhejiang, China
  • Received:2018-01-21 Revised:2018-03-18 Online:2018-07-26 Published:2018-07-20

Abstract:

AIM: To investigate the effects of dihydromyricetin (DMY) on wear-particle-induced osteolysis in murine calvarial model. METHODS: Thirty male C57BL/J6 mice were randomly divided into the sham group, the control group, and the DMY group (10 in each group). Except for the mice from the sham group, mice from the control group and DMY group received 30 mg Ti particles into calvaria to induce osteolysis in murine calvarial model. Mice from the DMY group were gavage-fed daily with DMY of 500 mg/kg, while mice from the sham group and control group were gavage-fed daily with saline. Calvaria and vein blood samples from each group were harvested for further micro-CT and pathological analysis at the 14th after the surgery. RESULTS:Micro-CT showed that the severity of osteolysis was significantly reduced in DMY group. And the BMD of the samples in DMY group was significantly higher than that of the control group(P<0.05). By the HE and TRAP staining analysis, less osteoclasts were found in the samples in DMY group. In addition, the application of DMY also decreased the serum TNF-α, IL-1β, and RANKL level yet improved OPG level as compared with the positive control group(P<0.05). DMY could significantly inhibit the differentiation of RANKL-induced osteoclast by in vitro cell culture experiments.CONCLUSION: DMY can inhibit the wear-particle-induced osteolysis in murine calvarial model.

Key words: mouse, dihydromyricetin, Ti particles, osteoclast, osteolysis

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