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자료유형
학술저널
저자정보
백은정 (연세대학교) 김애리 (연세대학교) 김지혜 (백석대학교) 유윤정 (연세대학교)
저널정보
대한구강생물학회 International Journal of Oral Biology International Journal of Oral Biology 제45권 제3호
발행연도
2020.1
수록면
92 - 98 (7page)

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Periodontitis is a bacteria-induced inflammatory disease associated with alveolar bone loss. Osteoclast is amacrophage-lineage cell that exhibits phagocytic activity; however, osteoclast phagocytic activity has not beendemonstrated under pathological conditions. Diabetes is a pathological condition that exacerbates alveolar bone lossvia periodontitis; therefore, we examined phagocytic osteoclasts in diabetic rats that had periodontitis. The rats weredivided into the control (C), periodontitis (P), and diabetes with periodontitis (DP) groups. Diabetes and periodontitiswere induced by streptozotocin injection and ligature of the mandibular first molars, respectively. On days 3 and 20after the ligature, the rats were sacrificed, and osteoclasts containing inclusions were quantified by tartrate-resistantacid phosphatase staining. On day 3, there were more osteoclasts containing inclusions in the DP group than in the Cgroup. Among inclusions, osteocyte-like cells and dense bodies were more frequently observed in the DP group thanin the C group. Cytoplasm-like structures were elevated more in the DP group than in the C and P groups. However,no differences were observed on day 20. Interestingly, some osteoclasts were in contact with the osteocytes withinthe exposed lacunae and contained several inclusions within a large vacuole. Thus, the elevation of phagocyticosteoclasts in rats with diabetes and periodontitis provides insight into the role of osteoclast phagocytic activity underpathological conditions.

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