All polymer chip for amperometric studies of transmitter release from large groups of neuronal cells

Simon T. Larsen, Rafael Taboryski

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We present an all polymer electrochemical chip for simple detection of transmitter release from large groups of cultured PC 12 cells. Conductive polymer PEDOT:tosylate microelectrodes were used together with constant potential amperometry to obtain easy-to-analyze oxidation signals from potassium-induced release of transmitter molecules. The nature of the resulting current peaks is discussed, and the time for restoring transmitter reservoirs is studied. The relationship between released transmitters and potassium concentration was found to fit to a sigmoidal dose–response curve. Finally, we demonstrate how the presented device can be used for simple drug screening purposes, by measuring the increase of transmitter release due to short-term treatment with l-DOPA.
    Original languageEnglish
    JournalAnalyst
    Volume137
    Issue number21
    Pages (from-to)5057-5061
    ISSN0003-2654
    DOIs
    Publication statusPublished - 2012

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