Hydroxyapatite, (HAp,Ca10(PO4)6(OH)2) is a bioceramic applied in different biomedical areas. In
recent studies, it has been concluded that hydroxyapatite nanoparticles has
inhibition effect on different kind of tumors. Therefore, HAp or composite
materials including HAp have been preferred in controlled drug delivery studies
as a drug carrier. However, hard structure and highly fragile structure
of hydroxyapatite limited its usage in clinical applications. This mechanical
disadvantages can be overcomed by using a polymer to produce a
hydroxyapatite-polymer biocomposite.In this study, hydroxyapatite-gelatin
(HAp-GEL) and hydroxyapatite-chitosan (HAp-CTS) biocomposites were produced by
wet precipitation method at pH 7.4 and 37°C implementing glutaraldehyde (GA) as a
cross-linking agent in the SBF (Simulated Body Fluid) medium. Drug loading
process was performed during the production of biocomposites by wet
precipitation method. By running experiments with different amounts (2% and 5%)
of glutaraldehyde (GA) and different biocomposites, the effect of
glutaraldehyde and type of composite on drug loading efficiency and drug
release profiles were investigated. All experiments were performed with
5-Fluorouracil (5-FU) drug. Drug loading performance of 5-FU at the HAp-GEL and
Hap-CTS biocomposites were determined in deionized water, phosphate buffer
solution (PBS) and HCl solution. To determine of drug loading and drug release
performace of the samples, UV spectrophotometer was used. Fourier transform
infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron
microscopy (SEM), thermogravimetric analysis (TGA) and particle size analyses were performed to
characterize the produced biocomposites.
Primary Language | Turkish |
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Subjects | Engineering |
Journal Section | Makaleler |
Authors | |
Publication Date | December 30, 2018 |
Published in Issue | Year 2018 |