Sodium alginate–polyvinyl alcohol–bovin serum albumin coated Fe3O4 nanoparticles as anticancer drug delivery vehicle: Doxorubicin loading and in vitro release study and cytotoxicity to HepG2 and L02 cells

2017 ◽  
Vol 79 ◽  
pp. 410-422 ◽  
Author(s):  
G. Prabha ◽  
V. Raj
2012 ◽  
Vol 506 ◽  
pp. 457-460
Author(s):  
Sureewan Duangjit ◽  
Praneet Opanasopit ◽  
Theerasak Rojanarata ◽  
Tanasait Ngawhirunpat

The aim of this study was to investigate the effect of surfactants on characteristic and in vitro release of liposomes containing meloxicam (MX), model of water insoluble drug. The potential use of deformable liposomes for drug delivery system was developed and investigated. The formulation composed of constant amount of phosphatidylcholine (PC) and MX and various amounts of cholesterol (Chol), sodium cholate (NaChol), sodium oleate (NaO) and stearylamine (SA) was formulated by reverse phase evaporation method. The vesicle size, zeta potential, morphology, entrapment efficiency, loading efficiency, stability andin vitrorelease study were evaluated. The result indicated that the entrapment efficiency andin vitrorelease study of vesicle formulations containing surfactants were significantly higher than the conventional liposome and MX suspension. The formulation of 10:2:2:5 PC/MX/Chol/NaO provided the maximum entrapment efficiency and drug release. Our research suggested that MX loaded in deformable liposomes containing surfactants can be potentially used as a drug delivery carrier for water insoluble drug.


2016 ◽  
Vol 16 (4) ◽  
pp. 120-127 ◽  
Author(s):  
Roghayeh Abbasalipo ◽  
Mohammad Fallah ◽  
Fruzan Sedighi ◽  
Amir Hossein Maghsood ◽  
Saman Javid

Author(s):  
Sindhu Vemula ◽  
Bhavya S ◽  
Suresh Kumar P ◽  
Jeyabaskaran M ◽  
Praveenkumar T ◽  
...  

  Objective: The present research study was carried out to formulate and evaluate the implants of temozolomide using hydrophilic polymer.Methods: Temozolomide implants were formulated using extrusion method with different grades of carbopol. The powdered blend was evaluated for micromeritic properties such as angle of repose, bulk density, tapped density, Carr’s index, and Hausner’s ratio. The formulated implants were analyzed for drug content uniformity, thickness, weight variation, and short-term stability study. In vitro release study of implants was performed using 0.1N hydrochloric acid, and it is maintained at 37°C±0.5°C.Results: In vitro release study demonstrated that the release rate of temozolomide from the implant matrix was a function of concentration of the polymer. As the concentration of polymer was increased, drug release from the matrix was extended. The release of drug from all implant formulations was found to be uniform and was extended over a period of 12 hrs. The implant formulations were found sterile, uniform in weight and size. The drug content was found to be in the range of 97.2-101.33%.Conclusion: Drug interaction studies revealed that there were no chemical interactions between temozolomide and polymers used in the study. Short-term stability studies of implants revealed that implants were stable, and there were no significant changes in the physical appearance and drug content of the implant formulations. The results of the study demonstrated that implantable drug delivery system of temozolomide can be formulated using hydrophilic polymer.


Author(s):  
Mustafa R. Abdulbaqi

Objective: This study was designed to improve the solubility and biological activity of class II drug clarithromycin (CLA) by utilizing the nanotechnology as a novel drug delivery system.Methods: Bismuth sulfide (Bi2S3) nanoparticles were synthesized using chemical co-precipitation technique, while the loading of clarithromycin (CLA) with bismuth sulfide (Bi2S3) nanoparticles was achieved using incorporation method. The loading process, as well as particle size reduction, were evaluated using x-ray diffraction (XRD), furrier transformed infrared (FTIR) and atomic force microscopy (AFM). In vitro release study was performed using USP paddle apparatus type II in phosphate buffer solution pH 7.4. Disc diffusion method was the technique used to test the antibacterial activity of CLA before and after loading process.Results: Loading of CLA with Bi2S3 nanoparticles was accomplished successfully accompanied with particle size reduction within nano range as measured by AFM. In vitro release study showed a significant* increase in solubility and dissolution profile of CLA after loading process, which was also proven using XRD that indicate transformation from crystalline into more soluble amorphous structure. Susceptibility test displayed significant* potentiation of antibacterial activity at all tested concentrations against gram+ve bacteria Staphylococcus aureus and Bacillus subtilis after loading of CLA with Bi2S3 nanoparticles, while gram –ve bacteria E. coli showed no response for CLA before and after loading process.Conclusion: The solubility, as well as the antibacterial activity of CLA, were improved significantly* after preparation of nanotechnology based drug delivery system through the utilization of metal nanoparticles, Bi2S3, as nanocarriers for CLA.


Author(s):  
Shanmuganathan S. ◽  
Nigma S. ◽  
Anbarasan B. ◽  
Harika B.

Nanoparticulate Carriers which is biodegradable, biocompatible and bio adhesive have significant feasible applications for administration of therapeutic molecules. The present study was aimed to formulate and optimise Capecitabine loaded Chitosan-Fe3O4 Nanoparticles and to study the in-vitro evaluation by sigma dialysis method. Capecitabine loaded chitosan – Fe3O4 nanoparticles batches with different ratios of drug: polymer (1:1, 1:2, 1:3, 1:4, 1:5, 1:6) were prepared by ionic gelation method. Increase in polymer concentration increases the nanoparticle drug content. Entrapment efficiency was 60.12% with drug to polymer ratio F3 (1:3). In-vitro release was found to be 65.20% for 12 hrs. Capecitabine from chitosanFe3O4 nanoparticles SEM image reveals discrete spherical structure and particles with size range of 100-500nm. FTIR studies represent the functional groups present with no characteristics change in formulations. Samples stored at refrigerator conditions showed better stability compared with samples kept at other conditions during 8 weeks of storage.


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