Vitamin D Supplementation Enhances the Fixation of Titanium Implants in Chronic Kidney Disease Mice
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Date
2014
Author(s)
Liu, Weiqing
Zhang, Shiwen
Zhao, Dan
Zou, Huawei
Sun, Ningyuan
Liang, Xing
Dard, Michel
Yuan, Quan
Publisher
Public Library of Science
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Citation
Liu, Weiqing, Shiwen Zhang, Dan Zhao, Huawei Zou, Ningyuan Sun, Xing Liang, Michel Dard, Beate Lanske, and Quan Yuan. 2014. “Vitamin D Supplementation Enhances the Fixation of Titanium Implants in Chronic Kidney Disease Mice.” PLoS ONE 9 (4): e95689. doi:10.1371/journal.pone.0095689. http://dx.doi.org/10.1371/journal.pone.0095689.
Abstract
Vitamin D (Vit D) deficiency is a common condition in chronic kidney disease (CKD) patients that negatively affects bone regeneration and fracture healing. Previous study has shown that timely healing of titanium implants is impaired in CKD. This study aimed to investigate the effect of Vit D supplementation on implant osseointegration in CKD mice. Uremia was induced by 5/6 nephrectomy in C57BL mice. Eight weeks after the second renal surgery, animals were given 1,25(OH)2D3 three times a week intraperitoneally for four weeks. Experimental titanium implants were inserted into the distal end of femurs two weeks later. Serum measurements confirmed decreased 1,25(OH)2D levels in CKD mice, which could be successfully corrected by Vit D injections. Moreover, the hyperparathyroidism observed in CKD mice was also corrected. X-ray examination and histological sections showed successful osseointegration in these mice. Histomorphometrical analysis revealed that the bone-implant contact (BIC) ratio and bone volume (BV/TV) around the implant were significantly increased in the Vit D-supplementation group. In addition, resistance of the implant, as measured by a push-in method, was significantly improved compared to that in the vehicle group. These results demonstrate that Vit D supplementation is an effective approach to improve the fixation of titanium implants in CKD.
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