Changes of TGF-β1 expression during orthodontic tooth movement in rats with osteoporosis

doi:10.19439/j.sjos.2017.01.004

Abstract

Abstract: ] PURPOSES: To observe the expression and distribution of TGF-β1 in periodontal tissue under intervention of Strontium ranelate and Qianggu capsule during orthodontic tooth movement in rats, and explore the efficacy of the 2 drugs. METHODS: Seventy male SD rats of 3 months old were selected in the study, and randomly divided into control group, model control group, Strontium ranelate group, Qianggu capsule group, each group had 15 animals. Retinoic acid was given by gavage to animals in the control group, Strontium ranelate group, Qianggu capsule group for 2 weeks, and bone density was detected to determine successful establishment of osteoporosis model. All rats were installed orthodontic device, and were sacrificed at 7 days, 14 days and 21 days, respectively. The tissue blocks of the first maxillary molar and adjacent alveolar bone were taken for H-E staining, immunohistochemical staining and semi-quantitative analysis was used to detect TGF-β1 expression in periodontal tissues. The data were statistically analyzed by SPSS 17.0 software package. RESULTS: TGF- beta 1 expression was significantly increased in Strontium ranelate group and Qianggu capsule group compared with control group (P<0.05); TGF- beta 1 expression in Strontium ranelate group was significantly stronger than that of Qianggu capsule group (P<0.05). CONCLUSIONS: Strontium ranelate and Qianggu capsule could enhance the expression of TGF- beta 1 and promote bone metabolism in osteoporosis rats, which is helpful to the movement of healthy teeth; the effect of Strontium ranelate is stronger than Qianggu capsule.

Key words: Osteoporosis, Tooth movement, Strontium ranelate, Qianggu capsule, TGF-β, 1

CLC Number:

R783.5

LI Ming-he, WANG Yang, LIAO Nan-nan, LI Jin-yuan, DONG Qing. Changes of TGF-β1 expression during orthodontic tooth movement in rats with osteoporosis[J]. Shanghai Journal of Stomatology, 2017, 26(1): 17-20.

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