Journal of Oral Science Research ›› 2015, Vol. 31 ›› Issue (10): 1032-1035.

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Effect of Simvastatin Carried by PLGA/CPC Combining with BMSCs on the Rat Critical Calvarial Defect

YU Xiang-ru1,2, HAN Xiao-qian3, CHENG Liang1, GAO Xing1, ZHANG Xiao-xiao1, LIU Chang1   

  1. 1. Department of Prosthodontics, Stomatology Hospital, Jilin University, Changchun 130021, China;
    2. Department of Prosthodontics, Changchun Stomatology Hospita, Changchun 130021, China;
    3. Department of Stomatology, Afflited Hospital of Binzhou Medical College, Binzhou 256600, China
  • Received:2015-04-23 Online:2015-10-28 Published:2016-05-04

Abstract: Objective: To investigate the possibilities and restoration effect of simvastatin carried by PLGA/CPC combining with BMSCs for reconstructing tissue-engineering bone in the calvarias of rats with critical sized defects. Methods: A total of 24 male rats were divided into three groups randomly with 8 in each group. Two circular 5 mm diameter defects were prepared on both sides of rat calvarial bone. The 16 calvarial bone defects in each group were randomly divided as simvastatin/PLGA/CPC/BMSCs group (BMSCs signed by Brdu) (n=4), simvastatin/PLGA/CPC group (n=4), PLGA/CPC group (n=4), and blank control group (n=4). After 4, 8, 12 weeks post-operation, all specimens were assessed using general observation, HE, and immunohistochemistry methods to evaluate the bone regeneration. Results: After 4, 8 and 12 weeks post-operation, histological results showed that the bone quality and bone formation quantity at the group with simvastatin/PLGA/CPC/BMSCs were much better than those of other groups. The results of immunohistochemistry showed that the positive expression of osteocalcin at simvastatin/PLGA/CPC/BMSCs group was much higher than that of other three groups. Conclusion: Simvastatin PLGA/CPC scaffold materials combined with BMSCs can induce new bone formation in critical sized calvarial defect, form high quality bone, and shorten the bone healing time when compared with other three groups.

Key words: PLGA Calcium phosphate cement, Critical sized bone defect, Simvastatin, Bone marrow stem cells

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