A cross-linking graphene oxide–polyethyleneimine hybrid film containing ciprofloxacin: one-step preparation, controlled drug release and antibacterial performance

2015 ◽  
Vol 3 (8) ◽  
pp. 1605-1611 ◽  
Author(s):  
Tiefan Huang ◽  
Lin Zhang ◽  
Huanlin Chen ◽  
Congjie Gao

A graphene oxide film was cross-linked by polyethyleneimine as a novel drug delivery system which showed excellent antibacterial performance.

2017 ◽  
Vol 41 (4) ◽  
pp. 1736-1743 ◽  
Author(s):  
Yongling Ding ◽  
Hong Yin ◽  
Shirley Shen ◽  
Kangning Sun ◽  
Futian Liu

A novel drug delivery system, containing functional Fe3O4, CdTe@ZnS QDs, doxorubicin and a chitosan matrix, was designed via a polymer crosslinking method.


2017 ◽  
Vol 17 (2) ◽  
pp. 249-254 ◽  
Author(s):  
Honglin Luo ◽  
Haiyong Ao ◽  
Gen Li ◽  
Wei Li ◽  
Guangyao Xiong ◽  
...  

2019 ◽  
Vol 84 (9) ◽  
pp. 1027-1039 ◽  
Author(s):  
László Almásy ◽  
Ana-Maria Putz ◽  
Qiang Tian ◽  
Gennady Kopitsa ◽  
Tamara Khamova ◽  
...  

The mesoporous silica particles were prepared by the sol?gel method in one-step synthesis, in acidic conditions, from tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES), varying the mole ratio of the silica precursors. Nitric acid was used as catalyst at room temperature and hexadecyltrimethyl ammonium bromide (CTAB) as structure directing agent. Optical properties, porosity and microstructure of the materials in function of the MTES/TEOS ratio were evaluated using infrared spectroscopy, nitrogen adsorption and small angle X-ray scattering. All materials showed the ordered pore structure and the high specific surfaces, making them suitable as the drug delivery systems. Drug loading and release tests using ketoprofen were performed to assess their performance for drug delivery applications. The amount of the methylated precursor used in the synthesis had little effect on the drug loading capacity, but had a strong influence on the initial rate of the drug release.


RSC Advances ◽  
2017 ◽  
Vol 7 (14) ◽  
pp. 8394-8401 ◽  
Author(s):  
Łukasz John ◽  
Mariola Malik ◽  
Mateusz Janeta ◽  
Sławomir Szafert

We present the synthetic and release aspects of a novel drug delivery system (DDS) based on amido-functionalized POSS. DDS after drug release hydrolyses at pH = 7.40 to non-toxic products such as carboxylic acid salts and aminopropyl-POSS.


Drug Delivery ◽  
2017 ◽  
Vol 24 (1) ◽  
pp. 143-151 ◽  
Author(s):  
Xia Dong ◽  
Zhiting Sun ◽  
Xiaoxiao Wang ◽  
Dunwan Zhu ◽  
Lanxia Liu ◽  
...  

2017 ◽  
Vol 11 (1) ◽  
pp. 222-244 ◽  
Author(s):  
Asha Paul ◽  
K.M .Fathima ◽  
Sreeja C. Nair

Background:A novel drug delivery system for treating acute epileptic condition.Objective:To develop an intranasal mucoadhesive formulation of Lamotrigine (LTG) loadedinsitugel, for the treatment of epilepsy to avoid possible side effects and first pass metabolism associated with conventional treatment.Methods:Lamotrigine was loaded into different polymeric solutions of gellan and xanthan gum.Results:All formulations subjected to various evaluation studies were within their acceptable limits. The pH of formulation ranges between 5.8 ±.001 to 6.8 ±.005 indicating that no mucosal irritation is expected as pH was in acceptable range.Invitrodrug release from the mucoadhesiveinsitugel formulations showed immediate drug release pattern with a maximum drug release of 97.02 ±0.54% for optimized G5 formulation within 20min.Exvivopermeation studies of optimized formulation G5 and control formulation was estimated.Exvivopermeation studies of G5insituformulation done for a period of 12 h resulted in slow, sustained release and greater permeability significance(P <0.05) through nasal mucosa when compared to control. Histopathological studies showed that G5 formulation was safer for nasal administration without any irritation. The stability studies indicated that gels were stable over 45 days in refrigerated condition (4±2ºC).Conclusion:The intranasalinsitugelling system is a promising novel drug delivery system for an antiepileptic drug lamotrigine which could enhance nasal residence time with increased viscosity and mucoadhesive character and provided better release profile of drug for treating acute epileptic conditions.


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