Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (26): 4101-4108.doi: 10.3969/j.issn.2095-4344.1346

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Cobalt-chromium particles inducing preosteoblasts may aggravate periprosthetic inflammation

Jiang Jianhao1, Li Peng1, Du Gangqiang1, Liu Hongzhi1, Wang Hui1, Zhang Kai1, Yang Shangyou2, 3, Yang Shuye1
  

  1. 1Department of Traumatic Orthopedics, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China; 2Department of Orthopedic Surgery, the University of Kansas School of Medicine-Wichita, Wichita, KS, USA; 3Department of Biological Sciences, Wichita State University, Wichita, KS, USA
  • Contact: Yang Shuye, MD, Attending physician, Department of Traumatic Orthopedics, Binzhou Medical University Hopital, Binzhou 256600, Shandong Province, China
  • About author:Jiang Jianhao, MD, Attending physician, Department of Traumatic Orthopedics, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81241061 (to ZK); the Medical and Health Technology Development Project of Shandong Province, No. 2016WS0023 (to YSY); the Science Research Startup Foundation of Binzhou Medical University, No. BY2016KYQD19 (to YSY)

Abstract:

BACKGROUND: Arthroplasty has been the most effective treatment for the end-stage osteoarthritis. However, aseptic loosening is the main long-term complication of arthroplasty. How to ameliorate aseptic loosening is an issue of concern.
OBJECTIVE: To investigate the biological behavior of preosteoblasts induced with cobalt-chromium particles during aseptic loosening process.
METHODS: (1) In vitro experiment: preosteoblasts were cultured in an osteoblast-induction medium and induced with different doses (0.3 or 1.25 g/L) of cobalt-chromium particles. (2) In vivo experiment: titanium screws were implanted to proximal tibia of server combined with immune-deficiency mice to simulate knee joint arthroplasty. Cobalt-chromium particles inducing MC3T3-E1 (5×105) were intra-articularly injected into the implanted knee at 1 week after surgery. Stable group (n=6): screw implanted mice without local particle insertion and cells transfusion; loosening group (n=6): mice were given an intra-articular injection of cobalt-chromium particles (4×104) before screw implantation; cobalt-chromium group: mice were given an intra-articular injection of preosteoblasts induced by cobalt-chromium particles and cobalt-chromium particles (4×104) before screw implantation.
RESULTS AND CONCLUSION: (1) In vitro experiment: with the increasing of cobalt-chromium particles, alkaline phosphatase and osteogenic gene expression was decreasing. (2) In vivo experiment: intra-articular injection of cobalt-chromium particles inducing MC3T3-E1 cells resulted in thicker peri-implant pseudomembrane, reduced the shear strength of bone-implant, decreased bone mineral density and bone volume, and increased the number of positive cells for tartrate-resistant acid phosphatase. (3) These results indicate that cobalt-chromium particles inhibit the growth, maturation and functions of preosteoblastic cells. Cobalt-chromium particles inducing preosteoblasts may aggravate periprosthetic inflammation and promote osteoclastogenesis.

Key words: preosteoblasts, osteoclasts, aseptic loosening, wear debris, metal ion, total arthroplasty, micro-CT, pull-out test

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