In situ doxorubicin–CaP shell formation on amphiphilic gelatin–iron oxide core as a multifunctional drug delivery system with improved cytocompatibility, pH-responsive drug release and MR imaging

2013 ◽  
Vol 9 (2) ◽  
pp. 5360-5368 ◽  
Author(s):  
W.-M. Li ◽  
S.-Y. Chen ◽  
D.-M. Liu
Keyword(s):  
Drug Delivery ◽  
Iron Oxide ◽  
Drug Release ◽  
Mr Imaging ◽  
Drug Delivery System ◽  
Delivery System ◽  
Shell Formation ◽  
Ph Responsive ◽  
Iron Oxide Core

In Vitro and In Vivo Drug Release from a Novel In Situ Forming Drug Delivery System

2007 ◽  
Vol 25 (6) ◽  
pp. 1347-1354 ◽  
Author(s):  
Heiko Kranz ◽  
Erol Yilmaz ◽  
Gayle A. Brazeau ◽  
Roland Bodmeier
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
In Situ Forming

A pH-responsive AIE nanoprobe as a drug delivery system for bioimaging and cancer therapy

2015 ◽  
Vol 3 (37) ◽  
pp. 7401-7407 ◽  
Author(s):  
Haibo Wang ◽  
Gongyan Liu ◽  
Shihua Dong ◽  
Junjie Xiong ◽  
Zongliang Du ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cancer Therapy ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Cellular Imaging ◽  
Ph Responsive ◽  
Triggered Drug Release

A multifunctional drug delivery system with AIE character was designed and constructed for simultaneous cellular imaging and pH-triggered drug release.

scholarly journals pH-Responsive TiO2 Nanotube Drug Delivery System Based on Iron Coordination

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Yan Liu ◽  
Chunling Xie ◽  
Fengfen Zhang ◽  
Xiufeng Xiao
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Coordination Bond ◽  
Electrochemical Anodization ◽  
Ph Responsive ◽  
Step Procedure ◽  
Potential Applications

Nanostructured materials play a fundamental role in orthopedic research owing to their outstanding properties and excellent biocompatibility. Titania nanotube (TNT) arrays engineered by electrochemical anodization process have been extensively explored and used as effective carriers for controlled drug delivery. In this study, we proposed a drug delivery system based on coordination bond. Iron (III), Fe3+, on the nanotube surface can effectively bind to alendronate sodium (NaAL), a drug for the treatment of osteoporosis, through coordination bonds, which can be formed or broken through the change of pH, and thus can be controlled by pH. The pH-responsive system was prepared by three-step procedure: (i) fabrication of TNTs by electrochemical anodization, (ii) modification of amino groups on the surface of nanotubes by hydrothermal method, and (iii) amino-functionalized nanotubes by Fe3+ solution soak. The Fe-modified TNTs not only allowed alendronate-loading content of up to 50.2% by weight, which is significantly higher than most drug delivery systems previously reported, but also delayed and prolonged drug release. Moreover, in vitro drug release experiments demonstrated that coordination bond-based TNT system may have great potential applications in clinical use.

pH-responsive cancer-targeted selenium nanoparticles: a transformable drug carrier with enhanced theranostic effects

2014 ◽  
Vol 2 (33) ◽  
pp. 5409-5418 ◽  
Author(s):  
Bo Yu ◽  
Xiaoling Li ◽  
Wenjie Zheng ◽  
Yanxian Feng ◽  
Yum-Shing Wong ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Drug Carrier ◽  
Controlled Drug Release ◽  
Ph Responsive ◽  
Cell Organelles ◽  
Shape Transformation ◽  
Anticancer Efficacy

A cancer-targeted and structure-transformable drug delivery system has been constructed, which displays enhanced anticancer efficacy and exhibits the characteristics of shape transformation and pH-controlled drug release under acidifying cell organelles.

GSH- and pH-responsive drug delivery system constructed by water-soluble pillar[5]arene and lysine derivative for controllable drug release

2015 ◽  
Vol 51 (31) ◽  
pp. 6832-6835 ◽  
Author(s):  
Xuan Wu ◽  
Yan Li ◽  
Chen Lin ◽  
Xiao-Yu Hu ◽  
Leyong Wang
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Inclusion Complex ◽  
Drug Delivery System ◽  
Delivery System ◽  
Water Soluble ◽  
Ph Responsive

GSH- and pH-responsive supramolecular vesicles constructed by a host–guest inclusion complex formed from water-soluble pillar[5]arene and lysine derivative were successfully developed.

Development and Evaluation of Floating Pulsatile Drug Delivery System Using Meloxicam

2017 ◽  
Vol 7 (04) ◽  
Author(s):  
ShirishaG. Suddala ◽  
S. K. Sahoo ◽  
M. R. Yamsani
Keyword(s):  
Rheumatoid Arthritis ◽  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Lag Time ◽  
Oral Dosage ◽  
Lag Phase ◽  
Pulsatile Drug Delivery

Objective: The objective of this research work was to develop and evaluate the floating– pulsatile drug delivery system (FPDDS) of meloxicam intended for Chrono pharmacotherapy of rheumatoid arthritis. Methods: The system consisting of drug containing core, coated with hydrophilic erodible polymer, which is responsible for a lag phase for pulsatile release, top cover buoyant layer was prepared with HPMC K4M and sodium bicarbonate, provides buoyancy to increase retention of the oral dosage form in the stomach. Meloxicam is a COX-2 inhibitor used to treat joint diseases such as osteoarthritis and rheumatoid arthritis. For rheumatoid arthritis Chrono pharmacotherapy has been recommended to ensure that the highest blood levels of the drug coincide with peak pain and stiffness. Result and discussion: The prepared tablets were characterized and found to exhibit satisfactory physico-chemical characteristics. Hence, the main objective of present work is to formulate FPDDS of meloxicam in order to achieve drug release after pre-determined lag phase. Developed formulations were evaluated for in vitro drug release studies, water uptake and erosion studies, floating behaviour and in vivo radiology studies. Results showed that a certain lag time before drug release which was due to the erosion of the hydrophilic erodible polymer. The lag time clearly depends on the type and amount of hydrophilic polymer which was applied on the inner cores. Floating time and floating lag time was controlled by quantity and composition of buoyant layer. In vivo radiology studies point out the capability of the system of longer residence time of the tablets in the gastric region and releasing the drug after a programmed lag time. Conclusion: The optimized formulation of the developed system provided a lag phase while showing the gastroretension followed by pulsatile drug release that would be beneficial for chronotherapy of rheumatoid arthritis and osteoarthritis.

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