Potential novel drug carriers for inner ear treatment: hyperbranched polylysine and lipid nanocapsules

Nanomedicine ◽  
2009 ◽  
Vol 4 (6) ◽  
pp. 623-635 ◽  
Author(s):  
Verena Scheper ◽  
Melanie Wolf ◽  
Markus Scholl ◽  
Zuzana Kadlecova ◽  
Thomas Perrier ◽  
...  
2016 ◽  
Vol 142 ◽  
pp. 55-64 ◽  
Author(s):  
Can Yang Zhang ◽  
Quan Chen ◽  
Wen Sheng Wu ◽  
Xin Dong Guo ◽  
Cheng Zhi Cai ◽  
...  

2011 ◽  
Vol 236-238 ◽  
pp. 1770-1774
Author(s):  
Yan Ling Guo ◽  
Bao Qi Wang ◽  
Jun Zhao ◽  
Zhao Shan Cui

Polyethylene Glycol Oleate was synthesized by esterification of polyethylene glycol and Oil acid using DMAP as a catalyst. The double bonds of the product in the core of micelles were cross-linked by the initiation of (NH4)2S2O8 during the micelles formed. Applications of the noncross-linked and cross-linked polyethylene glycol oleate in drug delivery were studied, which indicates that drug efficiency decreased after micelles were core cross-linked, but release rate of MTX from core cross-linked micelles seems slower than that from noncross-linked micelles.


2004 ◽  
Vol 131 (2) ◽  
pp. P260-P260 ◽  
Author(s):  
Tsuyoshi Endo ◽  
Takayuki Nakagawa ◽  
Tomoko Kita ◽  
Tae Soo Kim ◽  
Fukuichiro Iguchi ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-12
Author(s):  
Zhongjian Fang ◽  
Houchao Xu ◽  
Xiangjun Ji ◽  
Congbiao Liu ◽  
Kai Wang ◽  
...  

The past two decades have witnessed the great growth of the development of novel drug carriers. However, the releasing dynamics of drug from drug carriers in vivo and the interactions between cells and drug carriers remain unclear. In this paper, liposomes were prepared to encapsulate D-luciferin, which was the substrate of luciferase and served as a model drug. Based on the theoretical calculation of active loading, methods of preparation for liposomes were optimized. Only when D-luciferin was released from liposomes or taken in by the cells could bioluminescence be produced under the catalysis of luciferase. Models of multicellular tumor spheroid (MCTS) were built with 4T1-luc cells that expressed luciferase stably. The kinetic processes of uptake and distribution of free drugs and liposomal drugs were determined with models of cell suspension, monolayer cells, MCTS, and tumor-bearing nude mice. The technology platform has been demonstrated to be effective for the study of the distribution and kinetic profiles of various liposomes as drug delivery systems.


2011 ◽  
Vol 404 (1-2) ◽  
pp. 211-219 ◽  
Author(s):  
Ya Zhang ◽  
Weikai Zhang ◽  
Marian Löbler ◽  
Klaus-Peter Schmitz ◽  
Patrick Saulnier ◽  
...  

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Hua-Jian Zhou ◽  
Shu-Hua Teng ◽  
Yi-Bo Zhou ◽  
Hai-Sheng Qian

A facile and green method was explored to prepare the tetracycline hydrochloride- (TCH-) loaded poly (ε-caprolactone)-chitosan-silica xerogel (PCL-CS-SiO2) hybrid fibers by using 90% acetic acid as a suitable solvent. The SEM results showed that those fibers exhibited a continuous, bead-free morphology, an average diameter of about 430 nm, and super-hydrophilicity ( θ water ≈ 0 ° ). The presence of SiO2 was found to enhance the thermal stability of the hybrid fibers, and the actual content of SiO2 was obtained by the TG measurement. Moreover, SiO2 xerogel as an important bioceramic endowed the hybrid fibers with good drug release behavior and in vitro bioactivity, suggesting their potential use as novel drug carriers for bone tissue engineering. The present work is expected to offer a green strategy to develop novel, multifunctional hybrid materials.


Author(s):  
Y. Rao ◽  
K. Deepthi ◽  
K.P. Chowdary

Microemulsions are clear, transparent, thermodynamically stable dispersions of oil and water, stabilized by an interfacial film of surfactant frequently in combination with a co-surfactant. Recently, there has been a considerable interest for the microemulsion formulation, for the delivery of hydrophilic as well as lipophilic drug as drug carriers because of its improved drug solubilization capacity, long shelf life, easy of preparation and improvement of bioavailability. In this present review, we discuss about the various advantages of microemulsion in pharmaceuticals, along with its preparation, evaluation and research work carried out on microemulsions.


Author(s):  
Deepika Purohit ◽  
Deeksha Manchanda ◽  
Manish ◽  
Jyoti Rathi ◽  
Ravinder Verma ◽  
...  

Background: Compared to traditional dosage methods, the novel drug delivery systems (NDDS) provide various advantages. In the last few years, tremendous focus has been given to work focused on the novel drug delivery methods for small and large molecular drug carriers utilizing particulate drug delivery systems as well. It is evident from last decade as seen in number of patents cited in this field that the technology has evolved tremendously. Objective: Drug carriers utilized by this novel technology includes liposomes, dendrimers, polymeric nanoparticles, magnetic nanoparticles, solid lipid nanoparticles, carbon nanomaterials. Various forms of polymers have been used in the production of nanocarriers. Methods: Nanocarriers are colloidal system varying in size from 10 to 1000 nm. This technology now used to identify, manage and monitor numerous diseases and physical methods to alter and enhance the pharmacokinetic and pharmacodynamic properties of specific types of drug molecules. Results: Nanoparticles can be formulated by a number of techniques including ionic gelation, cross-linking, coacervation/precipitation, nanoprecipitation, spray drying, emulsion- droplet coalescence, nano sonication techniques etc. Several methods are used with which these nanoparticles can be characterized. These methods include nuclear magnetic resonance, optical microscopy, atomic force microscopy, photon correlation spectroscopy and electron microscopy, surface charge, in-vitro drug release, etc. Conclusion: In the present review, authors have tried to summarize the recent advances in the field of pharmaceutical nanotechnology and also focuses on the application and new patents in the area related to NDDS.


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