Development of animal experimental periodontitis models
도민재, 김규리, 이해신, Cha Se-Ho, 서태근, 박희정, 이정순, 김태일,
소속 상세정보
도민재 ( Do Min-Jae ) - Graduate School of Nanoscience and Technology (WCU) Department of Chemistry
김규리 ( Kim Kyu-Ri ) - Graduate School of Nanoscience and Technology (WCU) Department of Chemistry
이해신 ( Lee Hae-Shin ) - Graduate School of Nanoscience and Technology (WCU) Department of Chemistry
( Cha Se-Ho ) - Dongguk University Department of Life Science
서태근 ( Seo Tae-Gun ) - Dongguk University Department of Life Science
박희정 ( Park Hee-Jung ) - Seoul National University School of Dentistry Department of Periodontology
이정순 ( Lee Jeong-Soon ) - Seoul National University School of Dentistry Department of Periodontology
김태일 ( Kim Tae-Il ) - Seoul National University School of Dentistry Department of Periodontology
KMID : 0363020130430040147
Abstract
Purpose: An animal periodontitis model is essential for research on the pathogenesis and treatment of periodontal disease. In this study, we have introduced a lipopolysaccharide (LPS) of a periodontal pathogen to the alveolar bone defect of experimental animals and investigated its suitability as a periodontitis model.
Methods: Alveolar bone defects were made in both sides of the mandibular third premolar region of nine beagle dogs. Then, the animals were divided into the following groups: silk ligature tied on the cervical region of tooth group, Porphyromonas gingivalis LPS (P.g. LPS)-saturated collagen with silk ligature group, and no ligature or P.g. LPS application group as the control. The plaque index and gingival index were measured at 0 and 4 weeks postoperatively. The animals were then euthanized and prepared for histologic evaluation.
Results: The silk ligature group and P.g. LPS with silk ligature group showed a significantly higher plaque index at 4 weeks compared to the control (P<0.05). No significant difference was found in the plaque index between the silk ligature group and P.g. LPS with silk ligature group. The P.g. LPS with silk ligature group showed a significantly higher gingival index compared to the silk ligature group or the control at 4 weeks (P<0.05). Histologic examination presented increased inflammatory cell infiltration in the gingival tissue and alveolar bone of the P.g. LPS with silk ligature group.
Conclusions: An additional P.g. LPS-saturated collagen with silk ligature ensured periodontal inflammation at 4 weeks. Therefore, P.g. LPS with silk ligature application to surgically created alveolar bone defects may be a candidate model for experimental periodontitis.
키워드
Animal models ; Lipopolysaccharides ; Periodontitis ; Porphyromonas gingivalis
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