Voltammetric detection of nitric oxide (NO) in the rat brain: its variations throughout the sleep-wake cycle
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Acknowledgements
This work was supported by INSERM-U52, CNRS-ERS5645 and SYNTHELABO (Donation Veille-Sommeil). We also thank C. Limoge for improving the English text.
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2013, NeuroscienceCitation Excerpt :In this study, we used a novel Nafion®-modified Platinum (NF-PT) electrode, which has a response-time of ∼15 s (Brown et al., 2009) for real-time monitoring of NO levels across spontaneous sleep–wake cycles and dark–light phases, and during SD. Although electrochemical detection of NO across sleep-wakefulness in the cortex of freely moving rats has been attempted earlier (Burlet and Cespuglio, 1997; Cespuglio et al., 2004), nothing is known about spontaneous sleep–wake- or diurnal modulation of NO in sleep-wake-related sub-cortical structures including the PF-LHA. Furthermore, both in vitro and in vivo characterization of NF-PT electrode suggests that, compared to sensors used in earlier studies, this probe has a more rapid response-time as well as higher sensitivity and selectivity for NO and relatively minimal sensitivity to most endogenous electcro-active molecules and their metabolites, notably, ascorbic acid (AA), 5-hydroxytryptamine (5-HT), dopamine (DA), and nitrate (Brown et al., 2009; Finnerty et al., 2012).
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