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Zhao Y, Hu X, Li Z, Wang F, Xia Y, Hou S, Zhong H, Zhang F, Gu N. Use of polyvinylpyrrolidone-iodine solution for sterilisation and preservation improves mechanical properties and osteogenesis of allografts. Sci Rep 2016; 6:38669. [PMID: 27934929 PMCID: PMC5146663 DOI: 10.1038/srep38669] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 11/11/2016] [Indexed: 11/09/2022] Open
Abstract
Allografts eliminate the disadvantages associated with autografts and synthetic scaffolds but are associated with a disease-transmission risk. Therefore, allograft sterilisation is crucial. We aimed to determine whether polyvinylpyrrolidone-iodine (PVP-I) can be used for sterilisation and as a new wet-preservation method. PVP-I-sterilised and preserved allografts demonstrated improved mechanical property, osteogenesis, and excellent microbial inhibition. A thigh muscle pouch model of nude mice showed that PVP-I-preserved allografts demonstrated better ectopic formation than Co60-sterilised allografts (control) in vivo (P < 0.05). Furthermore, the PVP-I-preserved group showed no difference between 24 h and 12 weeks of allograft preservation (P > 0.05). PVP-I-preserved allografts showed more hydrophilic surfaces and PVP-I-sterilised tendons showed higher mechanical strength than Co60-sterilised tendons (P < 0.05). The level of residual PVP-I was higher without washing and with prolonged preservation (P < 0.05). In vitro cellular tests showed that appropriate PVP-I concentration was nontoxic to preosteoblast cells, and cellular differentiation measured by alkaline phosphatase activity and osteogenic gene markers was enhanced (P < 0.05). Therefore, the improved biological performance of implanted allografts may be attributable to better surface properties and residual PVP-I, and PVP-I immersion can be a simple, easy method for allograft sterilisation and preservation.
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Affiliation(s)
- Yantao Zhao
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Xiantong Hu
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Zhonghai Li
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Fuli Wang
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Yang Xia
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, P. R. China.,State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Shuxun Hou
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Hongbin Zhong
- Beijing Engineering Research Center of Orthopaedic Implants, First Affiliated Hospital of CPLA General Hospital, Beijing 100048, P. R. China
| | - Feimin Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, P. R. China.,Suzhou Institute &Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Suzhou 215000, P. R. China
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.,Suzhou Institute &Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Suzhou 215000, P. R. China
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