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Fast dissolving glucose porogens for early calcium phosphate cement degradation and bone regeneration.


ABSTRACT: Here, we demonstrate the in vivo efficacy of glucose microparticles (GMPs) to serve as porogens within calcium phosphate cements (CPCs) to obtain a fast-degrading bone substitute material. Composites were fabricated incorporating 20 wt% GMPs at two different GMP size ranges (100-150 ?m (GMP-S) and 150-300 ?m (GMP-L)), while CPC containing 20 wt% poly(lactic-co-glycolic acid) microparticles (PLGA) and plain CPC served as controls. After 2 and 8 weeks implantation in a rat femoral condyle defect model, specimens were retrieved and analyzed for material degradation and bone formation. Histologically, no adverse tissue response to any of the CPC-formulations was observed. All CPC-porogen formulations showed faster degradation compared to plain CPC control, but only GMP-containing formulations showed higher amounts of new bone formation compared to plain CPC controls. After 8 weeks, only CPC-porogen formulations with GMP-S or PLGA porogens showed higher degradation compared to plain CPC controls. Overall, the inclusion of GMPs into CPCs resulted in a macroporous structure that initially accelerated the generation of new bone. These findings highlight the efficacy of a novel approach that leverages simple porogen properties to generate porous CPCs with distinct degradation and bone regeneration profiles.

SUBMITTER: Grosfeld EC 

PROVIDER: S-EPMC7683932 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Fast dissolving glucose porogens for early calcium phosphate cement degradation and bone regeneration.

Grosfeld Eline-Claire EC   Smith Brandon T BT   Santoro Marco M   Lodoso-Torrecilla Irene I   Jansen John A JA   Ulrich Dietmar Jo DJ   Melchiorri Anthony J AJ   Scott David W DW   Mikos Antonios G AG   van den Beucken Jeroen J J P JJJP  

Biomedical materials (Bristol, England) 20200217 2


Here, we demonstrate the in vivo efficacy of glucose microparticles (GMPs) to serve as porogens within calcium phosphate cements (CPCs) to obtain a fast-degrading bone substitute material. Composites were fabricated incorporating 20 wt% GMPs at two different GMP size ranges (100-150 μm (GMP-S) and 150-300 μm (GMP-L)), while CPC containing 20 wt% poly(lactic-co-glycolic acid) microparticles (PLGA) and plain CPC served as controls. After 2 and 8 weeks implantation in a rat femoral condyle defect m  ...[more]

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