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Annals of Biomedical Engineering

, Volume 45, Issue 9, pp 2049–2060 | Cite as

Electrical Stimulation Increases Random Migration of Human Dermal Fibroblasts

  • Sarah Snyder
  • Carlisle DeJulius
  • Rebecca Kuntz Willits
Article

Abstract

Exogenous electrical stimulation (ES) has been investigated as a therapy for chronic wounds, as the skin produces currents and electrical fields (EFs) during wound healing. ES therapies operate by applying small EFs to the skin to mimic the transepithelial potentials that occur during the granulation phase of wound healing. Here, we investigated the effect of short duration (10 min) ES on the migration of HDFs using various magnitudes of physiologically relevant EFs. We modeled cutaneous injury by culturing HDFs in custom chambers that allowed the application of ES and then performed timelapse microscopy on a standard wound model. Using MATLAB to process cell coordinate data, we determined that the cells were migrating randomly and fit mean squared displacement data to the persistent random walk equation using nonlinear least squares regression analysis. Results indicated that application of 25–100 mV/mm DC EFs to HDFs on either uncoated or FN-coated surfaces demonstrated no significant changes in viability or proliferation. Of significance is that the HDFs increased random migration behavior under some ES conditions even after 10 min, providing a mechanism to enhance wound healing.

Keywords

Electrical stimulation Wound healing Fibroblast migration 

Notes

Acknowledgments

Funding for this work was provided through the Margaret F. Donovan Endowed Chair for Women in Engineering at The University of Akron. The authors would like to thank the Cornell University Statistical Consulting Unit for assistance with statistical analysis.

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Copyright information

© Biomedical Engineering Society 2017

Authors and Affiliations

  • Sarah Snyder
    • 1
    • 2
  • Carlisle DeJulius
    • 1
  • Rebecca Kuntz Willits
    • 1
  1. 1.Department of Biomedical EngineeringThe University of AkronAkronUSA
  2. 2.Meinig School of Biomedical EngineeringCornell UniversityIthacaUSA

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