Effects of strontium in modified biomaterials

被引：255

作者：

Zhang, Weibin ^{[2
]}

Shen, Yuhui ^{[2
]}

Pan, Haobo ^{[1
]}

Lin, Kaili ^{[3
]}

Liu, Xiaoguo ^{[3
]}

Darvell, Brian W. ^{[4
]}

Lu, William W. ^{[1
]}

Chang, Jiang ^{[3
]}

Deng, Lianfu ^{[2
]}

Wang, Deping ^{[5
]}

Huang, Wenhai ^{[5
]}

机构：

[1] Univ Hong Kong, Dept Orthopaed & Traumatol, Hong Kong, Hong Kong, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Med, Shanghai Ruijin Hosp, Shanghai Inst Orthopaed & Traumatol,Dept Orthopae, Shanghai, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[4] Kuwait Univ, Fac Dent, Dept Bioclin Sci, Kuwait, Kuwait

[5] Tongji Univ, Dept Mat Sci & Engn, Shanghai 200092, Peoples R China

来源：

ACTA BIOMATERIALIA | 2011年 / 7卷 / 02期

关键词：

Strontium; Hydroxyapatite; Calcium silicate; Borosilicate; Bioactivity; CALCIUM SILICATE; POSTMENOPAUSAL OSTEOPOROSIS; BONE REGENERATION; RANELATE; GLASSES; APATITE; BORATE; HYDROXYAPATITE; CEMENT; BIOACTIVITY;

D O I：

10.1016/j.actbio.2010.08.031

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Strontium (Sr) plays a special role in bone remodelling, being associated with both the stimulation of bone formation and a reduction in bone resorption. Thus, the modification of biomaterials by partial or full substitution by Sr is expected to increase both bioactivity and biocompatibility. However, such effects have to be studied individually. Although no phase transition was found in Sr-substituted hydroxyapatite (Sr-HA), Sr-containing calcium silicate (Sr-CS) or Sr-containing borosilicate (Sr-BS), their biological performance was substantially affected by changes in the physico-chemical properties and Sr content of the materials. Three distinct outcomes were found for the presence of Sr: (1) increased HA solubility; (2) no significant effect on the degradation rate of CS; (3) apparent inhibition of the otherwise rapid degradation of BS. In each case the released Sr affected osteoblast proliferation and alkaline phosphatase activity, with clear evidence that an optimum Sr dose exists. Such chemical and biological variations must be disentangled for the behaviour to be properly understood and materials design to be advanced. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：800 / 808

页数：9

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