The Galvanotactic Migration of Keratinocytes is Enhanced by Hypoxic Preconditioning

The endogenous electric field (EF)-directed migration of keratinocytes (galvanotaxis) into wounds is an essential step in wound re-epithelialization. Hypoxia, which occurs immediately after injury, acts as an early stimulus to initiate the healing process; however, the mechanisms for this effect, re...

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Veröffentlicht in:Scientific reports 2015-05, Vol.5 (1), p.10289-10289, Article 10289
Hauptverfasser: Guo, Xiaowei, Jiang, Xupin, Ren, Xi, Sun, Huanbo, Zhang, Dongxia, Zhang, Qiong, Zhang, Jiaping, Huang, Yuesheng
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Sprache:eng
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Zusammenfassung:The endogenous electric field (EF)-directed migration of keratinocytes (galvanotaxis) into wounds is an essential step in wound re-epithelialization. Hypoxia, which occurs immediately after injury, acts as an early stimulus to initiate the healing process; however, the mechanisms for this effect, remain elusive. We show here that the galvanotactic migration of keratinocytes was enhanced by hypoxia preconditioning as a result of the increased directionality rather than the increased motility of keratinocytes. This enhancement was both oxygen tension- and preconditioning time-dependent, with the maximum effects achieved using 2% O 2 preconditioning for 6 hours. Hypoxic preconditioning (2% O 2 , 6 hours) decreased the threshold voltage of galvanotaxis to 
ISSN:2045-2322
2045-2322
DOI:10.1038/srep10289