PMID- 28088017 OWN - NLM STAT- MEDLINE DCOM- 20170321 LR - 20220330 IS - 1873-4367 (Electronic) IS - 0927-7765 (Linking) VI - 152 DP - 2017 Apr 1 TI - Co-delivery of ibuprofen and gentamicin from nanoporous anodic titanium dioxide layers. PG - 95-102 LID - S0927-7765(17)30019-X [pii] LID - 10.1016/j.colsurfb.2017.01.011 [doi] AB - Although single-drug therapy may prove insufficient in treating bacterial infections or inflammation after orthopaedic surgeries, complex therapy (using both an antibiotic and an anti-inflammatory drug) is thought to address the problem. Among drug delivery systems (DDSs) with prolonged drug release profiles, nanoporous anodic titanium dioxide (ATO) layers on Ti foil are very promising. In the discussed research, ATO samples were synthesized via a three-step anodization process in an ethylene glycol-based electrolyte with fluoride ions. The third step lasted 2, 5 and 10min in order to obtain different thicknesses of nanoporous layers. Annealing the as-prepared amorphous layers at the temperature of 400 degrees C led to obtaining the anatase phase. In this study, water-insoluble ibuprofen and water-soluble gentamicin were used as model drugs. Three different drug loading procedures were applied. The desorption-desorption-diffusion (DDD) model of the drug release was fitted to the experimental data. The effects of crystalline structure, depth of TiO(2) nanopores and loading procedure on the drug release profiles were examined. The duration of the drug release process can be easily altered by changing the drug loading sequence. Water-soluble gentamicin is released for a long period of time if gentamicin is loaded in ATO as the first drug. Additionally, deeper nanopores and anatase phase suppress the initial burst release of drugs. These results confirm that factors such as morphological and crystalline structure of ATO layers, and the procedure of drug loading inside nanopores, allow to alter the drug release performance of nanoporous ATO layers. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Pawlik, Anna AU - Pawlik A AD - Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30060 Krakow, Poland. FAU - Jarosz, Magdalena AU - Jarosz M AD - Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30060 Krakow, Poland. FAU - Syrek, Karolina AU - Syrek K AD - Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30060 Krakow, Poland. FAU - Sulka, Grzegorz D AU - Sulka GD AD - Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30060 Krakow, Poland. Electronic address: sulka@chemia.uj.edu.pl. LA - eng PT - Journal Article DEP - 20170108 PL - Netherlands TA - Colloids Surf B Biointerfaces JT - Colloids and surfaces. B, Biointerfaces JID - 9315133 RN - 0 (Gentamicins) RN - 15FIX9V2JP (titanium dioxide) RN - D1JT611TNE (Titanium) RN - WK2XYI10QM (Ibuprofen) SB - IM MH - Gentamicins/*chemistry MH - Ibuprofen/*chemistry MH - Nanoparticles/*chemistry MH - Nanopores MH - Nanotubes/chemistry MH - Porosity MH - Titanium/*chemistry OTO - NOTNLM OT - Anodization OT - Co-delivery OT - Gentamicin OT - Ibuprofen OT - Nanoporous titanium dioxide OT - TiO(2) nanotubes EDAT- 2017/01/15 06:00 MHDA- 2017/03/23 06:00 CRDT- 2017/01/15 06:00 PHST- 2016/10/04 00:00 [received] PHST- 2016/12/11 00:00 [revised] PHST- 2017/01/06 00:00 [accepted] PHST- 2017/01/15 06:00 [pubmed] PHST- 2017/03/23 06:00 [medline] PHST- 2017/01/15 06:00 [entrez] AID - S0927-7765(17)30019-X [pii] AID - 10.1016/j.colsurfb.2017.01.011 [doi] PST - ppublish SO - Colloids Surf B Biointerfaces. 2017 Apr 1;152:95-102. doi: 10.1016/j.colsurfb.2017.01.011. Epub 2017 Jan 8.