scholarly journals Porous calcium phosphate-poly (lactic-co-glycolic) acid composite bone cement: A viable tunable drug delivery system

2016 ◽  
Vol 59 ◽  
pp. 92-101 ◽  
Author(s):  
Abhijit Roy ◽  
Siddharth Jhunjhunwala ◽  
Emily Bayer ◽  
Morgan Fedorchak ◽  
Steve R. Little ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Calcium Phosphate ◽  
Bone Cement ◽  
Drug Delivery System ◽  
Delivery System ◽  
Glycolic Acid ◽  
Composite Bone

scholarly journals Biphasic composite of calcium phosphate-based mesoporous silica as a novel bone drug delivery system

2019 ◽  
Vol 10 (2) ◽  
pp. 455-470 ◽  
Author(s):  
Magdalena Prokopowicz ◽  
Adrian Szewczyk ◽  
Adrianna Skwira ◽  
Rafał Sądej ◽  
Gavin Walker
Keyword(s):  
Drug Delivery ◽  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Mesoporous Silica ◽  
Drug Delivery System ◽  
Delivery System ◽  
Body Fluid ◽  
Molecular Surface ◽  
Molar Ratio ◽  
Mineralization Potential

AbstractWe reported the new biphasic composites of calcium phosphate and mesoporous silica material (CaP@MSi) in the form of powders and pellets as a potential bone drug delivery system for doxycycline hydrochloride (DOX). The CaP@MSi powders were synthesized by cationic surfactant-templating method. The effects of 10, 20, and 30% CaP content in the CaP@MSi powders on the molecular surface structure, the cytotoxicity against osteoblast cells in vitro, and the mineralization potential in simulated body fluid were investigated. The CaP@MSi characterized by the highest mineralization potential (30% CaP content) were used for DOX adsorption and pelletization process. The CaP which precipitated in the CaP@MSi composites was characterized as calcium-deficient with the Ca:P molar ratio between 1.0 and 1.2. The cytotoxicity assays demonstrated that the CaP content in MSi increases osteoblasts viability indicating the CaP@MSi (30% CaP content) as the most biocompatible. The combination of CaP and MSi was an effective strategy to improve the mineralization potential of parent material. Upon immersion in simulated body fluid, the CaP of composite converted into the bone-like apatite. The obtained pellets preserved the mineralization potential of CaP@MSi and provided the prolonged 5-day DOX release. The obtained biphasic CaP@MSi composites seem to have an application potential as bone-specific drug delivery system.

Calcium Phosphate Ceramics as Drug-Delivery System for Anticancer Therapy

2000 ◽  
Vol 192-195 ◽  
pp. 901-904 ◽  
Author(s):  
Elena Landi ◽  
L. Orlandi ◽  
G. Spagna ◽  
Anna Tampieri ◽  
N. Zaffaroni
Keyword(s):  
Drug Delivery ◽  
Calcium Phosphate ◽  
Drug Delivery System ◽  
Delivery System ◽  
Anticancer Therapy ◽  
Calcium Phosphate Ceramics
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