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  • Title: Electrical stimulation induces neurite outgrowth in PC12m3 cells via the p38 mitogen-activated protein kinase pathway.
    Author: Kawamura K, Kano Y.
    Journal: Neurosci Lett; 2019 Apr 17; 698():81-84. PubMed ID: 30634009.
    Abstract:
    We investigated the role of the p38 mitogen-activated protein kinase (MAPK) pathway in electrical stimulation-induced neurite outgrowth of PC12 mutant cells in which nerve growth factor (NGF)-induced neurite outgrowth is impaired. When cultures of the PC12 mutant (PC12m3) cells were exposed to electrical stimulation at 100 mA for 30 min, activity of p38 MAPK increased and neurite outgrowth was greatly enhanced. The frequency of neurite outgrowth induced by electrical stimulation was approximately 10-fold greater than that of neurite outgrowth induced by NGF alone. The neurite outgrowth induced by electrical stimulation was inhibited by a specific p38 MAPK inhibitor, SB203580. The activation of p38 MAPK induces activation of the transcription factor CREB. The activation of CREB induced by electrical stimulation was inhibited by SB203580. Longer electrical stimulation of PC12m3 cells provoked cell death, which was enhanced by SB203580. These findings suggest that electrical stimulation-induced activation of the p38 MAPK/CREB pathway is responsible for the neurite outgrowth and survival of PC12m3 cells.
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