PMID- 25280709 OWN - NLM STAT- MEDLINE DCOM- 20150616 LR - 20151119 IS - 1873-0191 (Electronic) IS - 0928-4931 (Linking) VI - 44 DP - 2014 Nov TI - Magnetic glass ceramics for sustained 5-fluorouracil delivery: characterization and evaluation of drug release kinetics. PG - 293-309 LID - S0928-4931(14)00507-4 [pii] LID - 10.1016/j.msec.2014.08.022 [doi] AB - In the present study, magnetic glass ceramics in the system Fe2O3 ∙ TiO2 ∙ P2O5 ∙ SiO2 ∙ MO (M=Mg, Ca, Mn, Cu, Zn or Ce) are prepared. The effect of adding different cations on the thermal behavior, developed phases, microstructure and magnetic properties is studied using differental thermal analysis (DTA), X-ray diffraction analysis (XRD), transmission electron microscope (TEM), FT-infrared transmission (FT-IR) and vibrating sample magnetometer (VSM) respectively. The magnetic glass ceramics are tested as delivery systems for 5-fluorouracil. Modeling and analysis of release kinetics are addressed. The application of Higuchi square root of time model and the first order release model indicated that, 5-FU is released by diffusion controlled mechanisms, and that its released rate depends greatly on the concentration of loaded drug during the loading stage. The obtained results suggested that, the prepared magnetic glass ceramics can be used for cancer treatment by hyperthermia and/or by localized delivery of therapeutic doses of 5-fluorouracil. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Abdel-Hameed, S A M AU - Abdel-Hameed SA AD - Glass Research Department, National Research Center, Dokki, ElBehoos St., Cairo 12311, Egypt. Electronic address: Salwa_NRC@hotmail.com. FAU - El-Kady, A M AU - El-Kady AM AD - Biomaterial Department, National Research Center, Dokki, ElBehoos St., Cairo 12311, Egypt. FAU - Marzouk, M A AU - Marzouk MA AD - Glass Research Department, National Research Center, Dokki, ElBehoos St., Cairo 12311, Egypt. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140812 PL - Netherlands TA - Mater Sci Eng C Mater Biol Appl JT - Materials science & engineering. C, Materials for biological applications JID - 101484109 RN - 0 (Biocompatible Materials) RN - 0 (Ferric Compounds) RN - 0 (Phosphorus Compounds) RN - 15FIX9V2JP (titanium dioxide) RN - 1K09F3G675 (ferric oxide) RN - 51SWB7223J (phosphorus pentoxide) RN - 7631-86-9 (Silicon Dioxide) RN - 85422-94-2 (Glass ceramics) RN - D1JT611TNE (Titanium) RN - U3P01618RT (Fluorouracil) SB - IM MH - Biocompatible Materials MH - Ceramics/*chemistry MH - Crystallization MH - Drug Delivery Systems/*methods MH - *Drug Liberation MH - Ferric Compounds/chemistry MH - Fluorouracil/*chemistry/pharmacology MH - Hydrogen-Ion Concentration MH - *Magnetics MH - Microscopy, Electron, Transmission MH - Phosphorus Compounds/chemistry MH - Silicon Dioxide/chemistry MH - Spectroscopy, Fourier Transform Infrared MH - Titanium/chemistry MH - X-Ray Diffraction OTO - NOTNLM OT - 5-Fluorouracil OT - Drug delivery OT - Glass ceramics OT - Magnetic EDAT- 2014/10/05 06:00 MHDA- 2015/06/17 06:00 CRDT- 2014/10/05 06:00 PHST- 2014/04/08 00:00 [received] PHST- 2014/06/25 00:00 [revised] PHST- 2014/08/05 00:00 [accepted] PHST- 2014/10/05 06:00 [entrez] PHST- 2014/10/05 06:00 [pubmed] PHST- 2015/06/17 06:00 [medline] AID - S0928-4931(14)00507-4 [pii] AID - 10.1016/j.msec.2014.08.022 [doi] PST - ppublish SO - Mater Sci Eng C Mater Biol Appl. 2014 Nov;44:293-309. doi: 10.1016/j.msec.2014.08.022. Epub 2014 Aug 12.