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  Subjects -> CHEMISTRY (Total: 848 journals)
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CHEMISTRY (602 journals)            First | 1 2 3 4     

Showing 601 - 735 of 735 Journals sorted alphabetically
X-Ray Spectrometry     Hybrid Journal   (Followers: 9)
Zeitschrift für Naturforschung B : A Journal of Chemical Sciences     Open Access   (Followers: 1)

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Journal Cover Nano Reviews & Experiments
  [12 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2002-2727
   Published by Co-Action Publishing Homepage  [32 journals]
  • Synthesis of protein-coated biocompatible methotrexate-loaded PLA-PEG-PLA
           nanoparticles for breast cancer treatment

    • Authors: Salam Massadeh, Manal Alaamery, Shatha Al-Qatanani, Saqer Alarifi, Shahad Bawazeer, Yusra Alyafee
      Abstract: Background: PLA-PEG-PLA triblock polymer nanoparticles are promising tools for targeted dug delivery. The main aim in designing polymeric nanoparticles for drug delivery is achieving a controlled and targeted release of a specific drug at the therapeutically optimal rate and choosing a suitable preparation method to encapsulate the drug efficiently, which depends mainly on the nature of the drug (hydrophilic or hydrophobic). In this study, methotrexate (MTX)-loaded nanoparticles were prepared by the double emulsion method.Method: Biodegradable polymer polyethylene glycol-polylactide acid tri-block was used with poly(vinyl alcohol) as emulsifier. The resulting methotrexate polymer nanoparticles were coated with bovine serum albumin in order to improve their biocompatibility. This study focused on particle size distribution, zeta potential, encapsulation efficiency, loading capacity, and in vitro drug release at various concentrations of PVA (0.5%, 1%, 2%, and 3%).Results: Reduced particle size of methotrexate-loaded nanoparticles was obtained using lower PVA concentrations. Enhanced encapsulation efficiency and loading capacity was obtained using 1% PVA. FT-IR characterization was conducted for the void polymer nanoparticles and for drug-loaded nanoparticles with methotrexate, and the protein-coated nanoparticles in solid state showed the structure of the plain PEG-PLA and the drug-loaded nanoparticles with methotrexate. The methotrexate-loaded PLA-PEG-PLA nanoparticles have been studied in vitro; the drug release, drug loading, and yield are reported.Conclusion: The drug release profile was monitored over a period of 168 hours, and was free of burst effect before the protein coating. The results obtained from this work are promising; this work can be taken further to develop MTX based therapies.Keywords: PEG; PLA; biodegradable nanoparticles; particle size; encapsulation efficiency; double emulsion method; poly(vinyl alcohol)(Published: 16 June 2016)Citation: Nano Reviews 2016, 7: 31996 - http://dx.doi.org/10.3402/nano.v7.31996
      PubDate: 2016-06-16
      Issue No: Vol. 7 (2016)
       
 
 
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