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Osteocytic Sclerostin Expression in Alveolar Bone in Rats With Diabetes Mellitus and Ligature-Induced Periodontitis

Title
Osteocytic Sclerostin Expression in Alveolar Bone in Rats With Diabetes Mellitus and Ligature-Induced Periodontitis
Authors
Ji Hye Kim;Dong Eun Lee;Yun Jung Yoo;Eun Jung Bak;Jeong Heon Cha;Gye Hyeong Woo
Issue Date
2015
Journal Title
Journal of Periodontology
ISSN
0022-3492
Citation
Journal of Periodontology, Vol.86(8) : 1005~1011, 2015
Abstract
BACKGROUND: Osteocytic sclerostin inhibits bone formation, and its expression is stimulated by tumor necrosis factor (TNF)-α. This study investigates sclerostin and TNF-α expression in rats with diabetes mellitus (DM) and periodontitis. METHODS: Rats were divided into control (C), periodontitis (P), and DM + periodontitis (DP) groups. After induction of DM by streptozotocin, periodontitis was induced by ligature. At day 0 (control) and at days 3 and 20 after induction of periodontitis, alveolar bone, osteoclasts, osteoid area, and TNF-α and sclerostin expression were evaluated. RESULTS: The distance between the cemento-enamel junction and the alveolar bone crest of the DP group was longer than that of the P group at day 20 after induction of periodontitis, but the number of osteoclasts was not different. Osteoid area decreased in both the P and DP groups by day 3, but whereas sustained osteoid suppression was observed in the DP group at day 20, osteoid formation was increased in the P group. The number of sclerostin-positive osteocytes increased in both groups at day 3, but the increased number of sclerostin-positive osteocytes was maintained only in the DP group through day 20. The number of TNF-α-positive cells increased more in the DP group than in the P group. CONCLUSIONS: Enhanced alveolar bone loss, suppressed bone formation, and prevalent TNF-α expression were characteristic of the DP group compared with the P group. Suppressed bone formation in the DP group was observed simultaneously with increased sclerostin and TNF-α expression. These results suggest that upregulated osteocytic sclerostin expression in periodontitis accompanied by DM may play a role in suppressed bone formation.
URI
http://www.joponline.org/doi/abs/10.1902/jop.2015.150083

http://ir.ymlib.yonsei.ac.kr/handle/22282913/140955
DOI
10.1902/jop.2015.150083
Appears in Collections:
1. 연구논문 > 5. Research Institutes > Oral Cancer Research Institute
1. 연구논문 > 2. College of Dentistry > Dept. of Oral Biology
Yonsei Authors
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