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Int J Nanomedicine. 2017 Feb 17;12:1341-1352. doi: 10.2147/IJN.S124965. eCollection 2017.

Promotion of in vivo degradability, vascularization and osteogenesis of calcium sulfate-based bone cements containing nanoporous lithium doping magnesium silicate.

Author information

1
Department of Orthopaedics Trauma, Changhai Hospital, Second Military Medical University, Shanghai, People's Republic of China.
2
Department of Biomedical Engineering, Inje University, Gimhae, Republic of Korea.

Abstract

Nanoporous lithium doping magnesium silicate (nl-MS) was introduced into calcium sulfate hemihydrate to prepare calcium sulfate composite (nl-MSC) bone cements. The introduction of nl-MS improved the in vitro degradability of nl-MSC cements, which could neutralize acidic degradable products of calcium sulfate and prevented the pH from dropping. The cements were implanted into the bone defects of femur bone of rabbits, and the results of histological and immunohistochemical analysis revealed that massive new bone tissue formed in the defects while the cements were degradable, indicating that the osteogenesis and degradability of the nl-MSC cements were much better than the control calcium sulfate dihydrate (CSD) cements. Furthermore, the positive expression of vascular endothelial growth factor and collagen type I for nl-MSC cements was higher than CSD, indicating that addition of nl-MS into the cements enhanced vascularization and osteogenic differentiation. The results suggested that the nl-MSC cements with good biocompatibility and degradability could promote vascularization and osteogenesis, and had great potential to treat bone defects.

KEYWORDS:

bone cements; degradability; nanoporous lithium doping magnesium silicate; osteogenesis; vascularization

PMID:
28260883
PMCID:
PMC5325137
DOI:
10.2147/IJN.S124965
[Indexed for MEDLINE]
Free PMC Article

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