Abstract
Our recent report demonstrated that a small subset of GABAergic interneurons in the cerebral cortex of rodents expresses Fos protein, a marker for neuronal activity, during SWS [1]. The population of sleep-active neurons consists of strongly immunohistochemically-stained cells for the enzyme neuronal nitric oxide synthase (Type I cells). By virtue of their widespread localization within the cerebral cortex and their widespread projections to other cortical cell types, cortical neuronal nitric oxide synthase-positive neurons are positioned to play a central role in the local regulation of sleep waveforms within the cerebral cortex. Here, we review the possible functions of neuronal nitric oxide synthase and its diffusible gas product, nitric oxide, in regulating neuronal activity, synaptic plasticity and cerebral blood flow within the context of local sleep regulation in the cerebral cortex. We also summarize what is known, in addition to their expression of neuronal nitric oxide synthase, about the biochemical phenotype, synaptic connectivity and electrophysiological properties of this novel sleep-active population of cells. Finally, we raise some critical unanswered questions about the role of this population in local sleep regulation within the cerebral cortex and describe some experimental approaches that might be used to address those questions.
Keywords: Sleep, nitric oxide, interneurons, electroencephalographic slow waves, cerebral blood flow, neuropeptides, sleep homeostasis, synaptic plasticity, GABAergic interneurons, Fos protein, widespread projections, cortical cell types, sleep waveforms, cerebral cortex, non-ubiquitous proteins
Current Topics in Medicinal Chemistry
Title: Sleep-Active Neuronal Nitric Oxide Synthase-Positive Cells of the Cerebral Cortex: A Local Regulator of Sleep?
Volume: 11 Issue: 19
Author(s): Jonathan P. Wisor, Dmitry Gerashchenko and Thomas S. Kilduff
Affiliation:
Keywords: Sleep, nitric oxide, interneurons, electroencephalographic slow waves, cerebral blood flow, neuropeptides, sleep homeostasis, synaptic plasticity, GABAergic interneurons, Fos protein, widespread projections, cortical cell types, sleep waveforms, cerebral cortex, non-ubiquitous proteins
Abstract: Our recent report demonstrated that a small subset of GABAergic interneurons in the cerebral cortex of rodents expresses Fos protein, a marker for neuronal activity, during SWS [1]. The population of sleep-active neurons consists of strongly immunohistochemically-stained cells for the enzyme neuronal nitric oxide synthase (Type I cells). By virtue of their widespread localization within the cerebral cortex and their widespread projections to other cortical cell types, cortical neuronal nitric oxide synthase-positive neurons are positioned to play a central role in the local regulation of sleep waveforms within the cerebral cortex. Here, we review the possible functions of neuronal nitric oxide synthase and its diffusible gas product, nitric oxide, in regulating neuronal activity, synaptic plasticity and cerebral blood flow within the context of local sleep regulation in the cerebral cortex. We also summarize what is known, in addition to their expression of neuronal nitric oxide synthase, about the biochemical phenotype, synaptic connectivity and electrophysiological properties of this novel sleep-active population of cells. Finally, we raise some critical unanswered questions about the role of this population in local sleep regulation within the cerebral cortex and describe some experimental approaches that might be used to address those questions.
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Cite this article as:
P. Wisor Jonathan, Gerashchenko Dmitry and S. Kilduff Thomas, Sleep-Active Neuronal Nitric Oxide Synthase-Positive Cells of the Cerebral Cortex: A Local Regulator of Sleep?, Current Topics in Medicinal Chemistry 2011; 11 (19) . https://dx.doi.org/10.2174/156802611797470367
DOI https://dx.doi.org/10.2174/156802611797470367 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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