RRC ID 12090
著者 Wilson JM, Hartley R, Maxwell DJ, Todd AJ, Lieberam I, Kaltschmidt JA, Yoshida Y, Jessell TM, Brownstone RM.
タイトル Conditional rhythmicity of ventral spinal interneurons defined by expression of the Hb9 homeodomain protein.
ジャーナル J Neurosci
Abstract The properties of mammalian spinal interneurons that underlie rhythmic locomotor networks remain poorly described. Using postnatal transgenic mice in which expression of green fluorescent protein is driven by the promoter for the homeodomain transcription factor Hb9, as well as Hb9-lacZ knock-in mice, we describe a novel population of glutamatergic interneurons located adjacent to the ventral commissure from cervical to midlumbar spinal cord levels. Hb9+ interneurons exhibit strong postinhibitory rebound and demonstrate pronounced membrane potential oscillations in response to chemical stimuli that induce locomotor activity. These data provide a molecular and physiological delineation of a small population of ventral spinal interneurons that exhibit homogeneous electrophysiological features, the properties of which suggest that they are candidate locomotor rhythm-generating interneurons.
巻・号 25(24)
ページ 5710-9
公開日 2005-6-15
DOI 10.1523/JNEUROSCI.0274-05.2005
PII 25/24/5710
PMID 15958737
PMC PMC6724883
MeSH Animals Cattle Electrophysiology Gene Expression Regulation Green Fluorescent Proteins / genetics Growth Hormone / genetics Homeodomain Proteins / genetics* Immunohistochemistry In Situ Hybridization Interneurons / physiology* Mice Mice, Transgenic Promoter Regions, Genetic RNA Splicing Recombination, Genetic Spinal Cord / physiology* Transcription Factors / genetics* beta-Galactosidase / genetics
IF 5.674
引用数 153
WOS 分野 NEUROSCIENCES
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