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Biomineralization and biocompatibility studies of bone conductive scaffolds containing poly(3,4-ethylenedioxythiophene):poly(4-styrene sulfonate) (PEDOT:PSS)

  • Mostafa Yazdimamaghani
  • Mehdi Razavi
  • Masoud Mozafari
  • Daryoosh Vashaee
  • Hari Kotturi
  • Lobat TayebiEmail author
Biocompatibility Studies Original Research
Part of the following topical collections:
  1. Biocompatibility Studies

Abstract

Considering the well-known phenomenon of enhancing bone healing by applying electromagnetic stimulation, manufacturing conductive bone scaffolds is on demand to facilitate the delivery of electromagnetic stimulation to the injured region, which in turn significantly expedites the healing procedure in tissue engineering methods. For this purpose, hybrid conductive scaffolds composed of poly(3,4-ethylenedioxythiophene), poly(4-styrene sulfonate) (PEDOT:PSS), gelatin (Gel), and bioactive glass (BaG) were produced employing freeze drying technique. Concentration of PEDOT:PSS were optimized to design the most appropriate conductive scaffold in terms of biocompatibility and cell proliferation. More specifically, scaffolds with four different compositions of 0, 0.1, 0.3 and 0.6 % (w/w) PEDOT:PSS in the mixture of 10 % (w/v) Gel and 30 % (w/v) BaG were synthesized. Immersing the scaffolds in simulated body fluid (SBF), we evaluated the bioactivity of samples, and the biomineralization were studied in details using scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction analysis and Fourier transform infrared spectroscopy. By performing cytocompatibility analyses for 21 days using adult human mesenchymal stem cells, we concluded that the scaffolds with 0.3 % (w/w) PEDOT:PSS and conductivity of 170 μS/m has the optimized composition and further increasing the PEDOT:PSS content has inverse effect on cell proliferation. Based on our finding, addition of this optimized amount of PEDOT:PSS to our composition can increase the cell viability more than 4 times compared to a nonconductive composition.

Keywords

Simulated Body Fluid Bioactive Glass Energy Dispersive Spectroscopy Analysis Simulated Body Fluid Solution Electrical Anisotropy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Mostafa Yazdimamaghani
    • 1
    • 2
  • Mehdi Razavi
    • 1
    • 3
    • 4
  • Masoud Mozafari
    • 1
    • 5
  • Daryoosh Vashaee
    • 6
  • Hari Kotturi
    • 7
  • Lobat Tayebi
    • 1
    • 8
    • 9
    Email author
  1. 1.Helmerich Advanced Technology Research CenterOklahoma State UniversityTulsaUSA
  2. 2.School of Chemical EngineeringOklahoma State UniversityStillwaterUSA
  3. 3.BCAST, Institute of Materials and ManufacturingBrunel University LondonUxbridge, LondonUK
  4. 4.Brunel Institute for BioengineeringBrunel University LondonUxbridge, LondonUK
  5. 5.Bioengineering Research Group, Nanotechnology and Advanced Materials DepartmentMaterials and Energy Research Center (MERC)TehranIran
  6. 6.Electrical and Computer Engineering DepartmentNorth Carolina State UniversityRaleighUSA
  7. 7.Department of BiologyUniversity of Central OklahomaEdmondUSA
  8. 8.Biomaterials and Advanced Drug Delivery LaboratoryStanford UniversityPalo AltoUSA
  9. 9.Department of Developmental SciencesMarquette University School of DentistryMilwaukeeUSA

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