A general method to greatly enhance ultrasound-responsiveness for common polymeric assemblies

2020 ◽  
Vol 11 (19) ◽  
pp. 3296-3304
Author(s):  
Jinkang Dou ◽  
Ruiqi Yang ◽  
Kun Du ◽  
Li Jiang ◽  
Xiayun Huang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Promising Technique ◽  
Polymeric Assemblies ◽  
General Method

Ultrasound-controlled drug release is a very promising technique for controlled drug delivery due to the unique advantages of ultrasound as the stimulus.

Water based PHEMA hydrogels for controlled drug delivery

2017 ◽  
Vol 43 (3) ◽  
pp. 228-239
Author(s):  
Hakan Ayhan ◽  
Fatma Ayhan
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Bacterial Strains ◽  
Buffer Solutions ◽  
Free Radical Photopolymerization ◽  
Water Based ◽  
Hydrogel Swelling ◽  
Drug Activities

Abstract Objective: In the scope of presented work, synthesis of water based acrylate hydrogels, characterization, and their usage in controlled drug release systems were aimed to investigate. Methods: Synthesis of acrylate based hydrogels that have different properties was carried out by free radical photopolymerization using photoinitiator. Because of its high biocompatibility, 2-hydroxyethyl metacrylate (HEMA) was used as monomer. Then drug release experiments were performed in pH 7.4 and 1.2 buffer solutions with certain ionic strength while the dynamic swelling behaviors were also determined. In the last part of the work, drug activities of synthesized drug-loaded hydrogels were tested in mediums containing Staphylococcus aureus and Pseudomonas aeruginosa bacteria cultures. Results: ATR-FTIR spectrums of all synthesized hydrogels were analyzed. The characteristic O-H, C-H, C=O, C-O tension vibrations bands were observed in the spectrums of the hydrogels. The rate of drug release in acidic pH 1.2 for two types of hydrogels was observed to be much faster than at pH 7.4. It was determined that hydrogel swelling ratio decrease with increasing monomer ratio. All drug loaded hydrogels were effective to inhibit the growth of both two bacterial strains. Conclusion: Hydrogels synthesized were found to be suitable for the controlled drug delivery applications.

pH-Responsive polymeric Janus containers for controlled drug delivery

2015 ◽  
Vol 6 (22) ◽  
pp. 4144-4153 ◽  
Author(s):  
Ziguang Zhao ◽  
Feiyan Zhu ◽  
Xiaozhong Qu ◽  
Qiuhua Wu ◽  
Qian Wang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Hollow Spheres ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Ph Responsive

In this study, we have successfully designed and fabricated pH-responsive polymeric Janus hollow spheres for controlled drug release.

Polymer–paclitaxel conjugates based on disulfide linkers for controlled drug release

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7559-7566 ◽  
Author(s):  
Wulian Chen ◽  
Luqman Ali Shah ◽  
Li Yuan ◽  
Mohammad Siddiq ◽  
Jianhua Hu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Diblock Copolymer ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Controlled Drug Delivery System ◽  
Disulfide Linkers ◽  
Covalently Linked

Controlled drug delivery system based on hydrophilic diblock copolymer covalently linked paclitaxel (PTX) via a disulfide linker.

scholarly journals Dual stimuli-responsive polyphosphazene-based molecular gates for controlled drug delivery in lung cancer cells

RSC Advances ◽  
2020 ◽  
Vol 10 (46) ◽  
pp. 27305-27314
Author(s):  
Yolanda Salinas ◽  
Michael Kneidinger ◽  
Cristina Fornaguera ◽  
Salvador Borrós ◽  
Oliver Brüggemann ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Drug Release ◽  
Mesoporous Silica Nanoparticles ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Stimuli Responsive ◽  
Ph Responsive ◽  
Bottle Brush ◽  
Molecular Gates

Bottle-brush polyphosphazenes as dual, thermosensitive and pH responsive gatekeepers for mesoporous silica nanoparticles, and their use in controlled drug release.

Stimulus-cleavable chemistry in the field of controlled drug delivery

2021 ◽  
Author(s):  
Yufei Xue ◽  
Hua Bai ◽  
Bo Peng ◽  
Bin Fang ◽  
Jonathan Baell ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Research Areas ◽  
Potential Applications

This review comprehensively summarises stimulus-cleavable linkers from various research areas and their cleavage mechanisms, thus provides an insightful guideline to extend their potential applications to controlled drug release from nanomaterials.

scholarly journals NIR-triggered upconversion nanoparticles@thermo-sensitive liposome hybrid theranostic nanoplatform for controlled drug delivery

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 29065-29072
Author(s):  
Yibin Yu ◽  
Yida Huang ◽  
Wanqian Feng ◽  
Mei Yang ◽  
Baiqi Shao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Upconversion Luminescence ◽  
Controlled Drug Delivery ◽  
Controlled Drug Release ◽  
Upconversion Nanoparticles

A novel hybrid photothermal theranostic nanoplatform UCNPs@Bi@SiO2@GE HP-lips is developed. Upon NIR irradiation, the nanoplatform could photothermally trigger controlled drug release and present bright upconversion luminescence.

Nanostructured Ketorolac-Tromethamine/MCF: Synthesis, Characterization and Application in Drug Release System

2018 ◽  
Vol 14 (5) ◽  
pp. 432-439 ◽  
Author(s):  
Juliana M. Juarez ◽  
Jorgelina Cussa ◽  
Marcos B. Gomez Costa ◽  
Oscar A. Anunziata
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Therapeutic Efficacy ◽  
Drug Delivery Systems ◽  
Controlled Drug Release ◽  
Delivery Systems ◽  
The Body ◽  
Fickian Diffusion ◽  
Ketorolac Tromethamine

Background: Controlled drug delivery systems can maintain the concentration of drugs in the exact sites of the body within the optimum range and below the toxicity threshold, improving therapeutic efficacy and reducing toxicity. Mesostructured Cellular Foam (MCF) material is a new promising host for drug delivery systems due to high biocompatibility, in vivo biodegradability and low toxicity. Methods: Ketorolac-Tromethamine/MCF composite was synthesized. The material synthesis and loading of ketorolac-tromethamine into MCF pores were successful as shown by XRD, FTIR, TGA, TEM and textural analyses. Results: We obtained promising results for controlled drug release using the novel MCF material. The application of these materials in KETO release is innovative, achieving an initial high release rate and then maintaining a constant rate at high times. This allows keeping drug concentration within the range of therapeutic efficacy, being highly applicable for the treatment of diseases that need a rapid response. The release of KETO/MCF was compared with other containers of KETO (KETO/SBA-15) and commercial tablets. Conclusion: The best model to fit experimental data was Ritger-Peppas equation. Other models used in this work could not properly explain the controlled drug release of this material. The predominant release of KETO from MCF was non-Fickian diffusion.

NIR responsive AuNRs/pNIPAM/PEGDA inverse opal hydrogel microcarriers for controllable drug delivery

2021 ◽  
Author(s):  
Lingzi Liu ◽  
Xiaoyan Sun ◽  
Baofen Ye ◽  
Zhengyu Yan
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Delivery System ◽  
Gold Nanorods ◽  
Controlled Drug Release ◽  
Inverse Opal

Particle-based delivery system has merged as a powerful platform in controlled drug release. The present study developed a new inverse opal hydrogel microcarriers system composed of gold nanorods (AuNRs) for...

Evaluation of clay-ionene nanocomposite carriers for controlled drug delivery: Synthesis, in vitro drug release, and kinetics

2019 ◽  
Vol 225 ◽  
pp. 122-132 ◽  
Author(s):  
Hany El-Hamshary ◽  
Mohamed H. El-Newehy ◽  
Meera Moydeen Abdulhameed ◽  
Ayman El-Faham ◽  
Abeer S. Elsherbiny
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Controlled Drug Delivery ◽  
In Vitro Drug Release
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