scholarly journals Spatiotemporally and Sequentially-Controlled Drug Release from Polymer Gatekeeper–Hollow Silica Nanoparticles

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
L. Palanikumar ◽  
M. T. Jeena ◽  
Kibeom Kim ◽  
Jun Yong Oh ◽  
Chaekyu Kim ◽  
...  
2006 ◽  
Vol 6 (9) ◽  
pp. 3139-3144 ◽  
Author(s):  
Li-Xiong Wen ◽  
Hao-Min Ding ◽  
Jie-Xin Wang ◽  
Jian-Feng Chen

With two different methods, ibuprofen was entrapped into porous hollow silica nanoparticles (PHSNs) carriers, which were synthesized through a sol–gel route by using CaCO3 nanoparticles as the inorganic templates. By employing pressured CO2 as the loading medium, the amount of ibuprofen that was pressed into the carriers was ∼52% higher than that by simply soaking. The drug release behaviors of the ibuprofen-loaded PHSNs were investigated in a simulated intestine juice and an artificial gastric fluid, respectively, and it demonstrated a sustained release pattern in all cases and the sample prepared under high pressure had a lower release rate in both fluids and thus owned a greater sustained drug release capacity. In the acidic artificial gastric fluid, no silica was degraded and only 16% of the loaded ibuprofen was released from the matrix in 300 min. However, much more silica was degraded in the simulated intestine juice in a shorter time and almost all the loaded ibuprofen was dissolved into the solution eventually, resulting in a quicker and complete ibuprofen release. Therefore, the PHSNs can be utilized for applications of controlled drug delivery to small intestine.


RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34958-34962 ◽  
Author(s):  
Lu Zhou ◽  
Guojie Liu ◽  
Yang Wang ◽  
Jianling Liu ◽  
Yajie Zhang ◽  
...  

Gold nanoparticles were linked to the surface of mesoporous silica through a polyA oligonucleotide and infrared stimulation controlled drug release.


RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22365-22372 ◽  
Author(s):  
Yufang Zhu ◽  
Cuilian Tao

DNA-capped Fe3O4/SiO2 magnetic mesoporous silica (MMS) nanoparticles were developed for potential temperature controlled drug release and magnetic hyperthermia.


Nano Letters ◽  
2017 ◽  
Vol 18 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Qian Liu ◽  
Claudia M. Santamaria ◽  
Tuo Wei ◽  
Chao Zhao ◽  
Tianjiao Ji ◽  
...  

2019 ◽  
Vol 553 ◽  
pp. 83-90 ◽  
Author(s):  
Yan Bao ◽  
Yuanxia Zhang ◽  
Pan Liu ◽  
Jianzhong Ma ◽  
Wenbo Zhang ◽  
...  

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