<i>In vivo</i> Simultaneous Monitoring by Pt-disk Microelectrodes of Intracerebral Hydrogen Peroxide and Dopamine in Rats

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  • Hidekatsu Yokoyama
    Institute for Life Support Technology, Yamagata Technopolis Foundation2-2-1 Matsuei, Yamagata
  • Nahoko Kasai
    NTT Basic Research Laboratories3-1 Morinosato Wakamiya, Atsugi
  • Tomokazu Matsue
    Greduate School of Engineering, Tohoku UniversityAobayama 07, Sendai
  • Isamu Uchida
    Greduate School of Engineering, Tohoku UniversityAobayama 07, Sendai
  • Hiroaki Ohya-Nishiguchi
    Institute for Life Support Technology, Yamagata Technopolis Foundation2-2-1 Matsuei, Yamagata
  • Hitoshi Kamada
    Institute for Life Support Technology, Yamagata Technopolis Foundation2-2-1 Matsuei, Yamagata

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<jats:title>Abstract</jats:title> <jats:p>A technique was developed for simultaneous monitoring of temporal changes in hydrogen peroxide (H2O2) and dopamine (DA) levels by using Pt-disk microelectrodes (φ 30 μm). H2O2 and DA were determined by differential double-pulse amperometry (for H2O2; 1st step, 750 mV, 1000 ms; 2nd step, 1100 mV, 1000 ms: for DA; 1st step, 150 mV, 600 ms; 2nd step, 250 mV, 50 ms). The electrode for H2O2 or DA is capable of determining each target substance and these substances do not interfere with each other. For an in vivo application, the electrodes were implanted into the striatum of rats and used successfully to monitor intrastriatal changes in H2O2 and DA simultaneously after intraperitoneal injection of methamphetamine while the animals were moving freely.</jats:p>

収録刊行物

  • Chemistry Letters

    Chemistry Letters 28 (6), 497-498, 1999-06-01

    Oxford University Press (OUP)

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