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• W2044139618 abstract "The red nucleus (RN) has been widely used to study the formation and remodeling of synaptic connections during development and in post-lesion plasticity. Since glial cells are thought to contribute to synaptic plasticity, and information on functional properties of brain stem glia is missing, we analyzed voltage-gated ion channels as well as glutamate receptors expressed by glial cells of the RN. The patch-clamp technique was applied to identified cells in acute brain stem slices of 5- to 12-day-old rats. Based on their pattern of membrane currents, two types of glial cells could be distinguished. A first type was characterized by passive, symmetrical currents. The second population of cells, which was the focus of the present study, expressed a complex pattern of voltage-gated channels. These cells could be labeled with antibodies against glutamine synthetase and S100β, suggesting an astroglial origin. Depolarizing voltage steps activated transient and delayed rectified K+ currents as well as Na+ currents. In addition, a subset of cells expressed Ba2+ sensitive inward rectifier K− currents activated by hyperpolarization. All “complex” glial cells analyzed possessed ionotropic glutamate receptors of the α-amino-3-hydroxy-5-methyl-4-isoxazoleprorionic acid (AMPA) subtype, while functional kainate and N-methyl-D-aspartate (NMDA) receptors could not be detected. Receptor activation blocked outward rectifying K+ currents, similar to previous observations in glial cells of the hippocampus and the corpus callosum. GLIA 19:234–246, 1997. © 1997 Wiley-Liss, Inc." @default.
• W2044139618 created "2016-06-24" @default.
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• W2044139618 date "1997-03-01" @default.
• W2044139618 modified "2023-09-25" @default.
• W2044139618 title "Analysis of ion channel expression by astrocytes in red nucleus brain stem slices of the rat" @default.
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• W2044139618 doi "https://doi.org/10.1002/(sici)1098-1136(199703)19:3<234::aid-glia6>3.0.co;2-z" @default.
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• W2044139618 hasPublicationYear "1997" @default.
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