Development and dissolution studies of bisphosphonate (clodronate)-containing hydroxyapatite-polylactic acid biocomposites for slow drug delivery.
Identifieur interne : 000E40 ( Main/Exploration ); précédent : 000E39; suivant : 000E41Development and dissolution studies of bisphosphonate (clodronate)-containing hydroxyapatite-polylactic acid biocomposites for slow drug delivery.
Auteurs : Innocent J. Macha [Australie] ; Sophie Cazalbou [France] ; Ronald Shimmon [Australie] ; Besim Ben-Nissan [Australie] ; Bruce Milthorpe [Australie]Source :
- Journal of tissue engineering and regenerative medicine [ 1932-7005 ] ; 2017.
Abstract
An increase in clinical demand on the controlled release of bisphosphonates (BPs) due to complications associated with systemic administration, has been the current driving force on the development of BP drug-release systems. Bisphosphonates have the ability to bind to divalent metal ions, such as Ca(2+) , in bone mineral and prevent bone resorption by influencing the apoptosis of osteoclasts. Localized delivery using biodegradable materials, such as polylactic acid (PLA) and hydroxyapatite (HAp), which are ideal in this approach, have been used in this study to investigate the dissolution of clodronate (non-nitrogen-containing bisphosphonate) in a new release system. The effects of coral structure-derived HAp and the release kinetics of the composites were evaluated. The release kinetics of clodronate from PLA-BP and PLA-HAp-BP systems seemed to follow the power law model described by Korsmeyer-Peppas. Drug release was quantified by (31) P-NMR with detection and quantification limits of 9.2 and 30.7 mM, respectively. The results suggest that these biocomposite systems could be tuned to release clodronate for both relatively short and prolonged period of time. In addition to drug delivery, the degradation of HAp supplies both Ca(2+) and phosphate ions that can help in bone mineralization. Copyright © 2015 John Wiley & Sons, Ltd.
DOI: 10.1002/term.2066
PubMed: 26174121
Affiliations:
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