Effects of Ethanolic Extract on Lipopolysaccharide-induced Dental Alveolar Bone Resorption in Rats

Overview

Journal J Dent Sci

Specialty Dentistry

Date 2019 Mar 22

PMID 30894943

Citations 3

Authors

Huang-Tzu Tsai

Wen-Liang Chang

Hsiao-Pei Tu

Earl Fu

Yao-Dung Hsieh

Cheng-Yang Chiang

Affiliations

Soon will be listed here.

Abstract

Background/purpose: (SM) Bunge (Labiatae/Lamiaceae; common name danshen) is a Chinese medicine that improves blood circulation and inhibits inflammatory response. Thus, it is used for the treatment of cardiac diseases and inflammation. In this study, we aimed to evaluate the effect of an ethanolic extract of SM (SME) on the dental alveolar bone resorption induced by bacterial lipopolysaccharide (LPS) in rats.

Materials And Methods: An ethanolic extract was prepared from roots of SM. The major constituents of this extract were determined by high-performance liquid chromatography. The activity of the extract was evaluated in a rat model in which the dental alveolar bone resorption was induced by injection of bacterial LPS into the palatal gingiva around the maxillary molar teeth. The effect of SME on the bone resorption was studied by histologic and histomorphometric analysis.

Results: The number of osteoclasts and the percentage of osteoclasts covering the alveolar bone surfaces were significantly increased in the LPS group compared with those in the phosphate-buffered saline (PBS) group. The number and percentage of the osteoclasts on the bony surfaces were significantly reduced in the SME group in comparison with the LPS group, although it was still higher than the numbers observed in the PBS group.

Conclusion: Because SME reduced bone resorption caused by the injections of bacterial LPS in rats, we suggest that SME might have a protective effect on dental alveolar bone resorption in periodontitis.

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