Electrical stimulation of the motor cortex enhances progenitor cell migration in the adult rat brain

Ali Jahanshahi*, Lisa Schonfeld, Marcus L. F. Janssen, Sarah Hescham, Ersoy Kocabicak, Harry W. M. Steinbusch, Jacobus J. van Overbeeke, Yasin Temel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Web of Science)

Abstract

Clinical and preclinical investigations suggest that epidural stimulation of the motor cortex (MC) can improve stroke-induced neurological deficits. The mechanisms involved in stimulation-induced recovery are not well understood and might involve neurogenesis-related processes. Here, we addressed the question whether MC stimulation influences processes of migration and differentiation of neuronal progenitor cells in vivo. Epidural stimulation electrodes were implanted at the level of the MC in rats, and electrical current was applied for a period of 1 month. Increased cell proliferation was observed in the subventricular zone (SVZ). We also found evidences for enhanced cell migration toward the source of current, a process known as electrotaxis. Some of these cells expressed the neuronal marker, NeuN. In addition, our results indicate that MC stimulation enhances neuronal activity of the dorsal raphe nucleus, leading to an increase in the expression of 5-hydroxytryptamine in the SVZ. It is known that such an increase can promote formation of new cells in the SVZ. Our findings suggest that epidural MC stimulation influences neurogenesis-related processes in animal models.
Original languageEnglish
Pages (from-to)165-177
JournalExperimental Brain Research
Volume231
Issue number2
DOIs
Publication statusPublished - Nov 2013

Keywords

  • Electrotaxis
  • Motor cortex stimulation
  • Neurogenesis
  • Serotonin
  • Subventricular zone

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