Postischemic Glucose Metabolism is Modified in the Hippocampal CA1 Region Depleted of Excitatory Input or Pyramidal Cells
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چکیده
منابع مشابه
Axonal ramifications of hippocampal Ca1 pyramidal cells.
Intracellular injections of Lucifer Yellow into CA1 pyramidal cells of the in vitro guinea pig hippocampal slice enabled us to examine in detail the morphology of the axons of these neurons. We also recorded the electrophysiological responses of these neurons to alvear stimulation. In our morphological examinations, we found that many axons bifurcate in the alveus, with the major branch project...
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Altered neuronal calcium homeostasis is widely hypothesized to underlie cognitive deficits in normal aging subjects, but the mechanisms that underlie this change are unknown, possibly due to a paucity of direct measurements from aging neurons. Using CCD and two-photon calcium imaging techniques on CA1 pyramidal neurons from young and aged rats, we show that calcium influx across the plasma memb...
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Synaptic activity, such as long-term potentiation (LTP), has been shown to induce morphological plasticity of excitatory synapses on dendritic spines through the spine head and postsynaptic density (PSD) enlargement and reorganization. Much less, however, is known about activity-induced morphological modifications of inhibitory synapses. Using an in vitro model of rat organotypic hippocampal sl...
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Integration of synaptic excitation to generate an action potential (excitatory postsynaptic potential-spike coupling or E-S coupling) determines the neuronal output. Bidirectional synaptic plasticity is well established in the hippocampus, but whether active synaptic integration can display potentiation and depression remains unclear. We show here that synaptic depression is associated with an ...
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Trains of brief iontophoretic glutamate pulses were delivered onto the apical dendrites of CA1 pyramidal cells at variable frequencies (3-100 Hz) to examine how the activation of a G protein-activated, inwardly rectifying K(+) (GIRK) conductance alters the postsynaptic processing of repetitive excitatory input. Application of the GIRK channel agonist baclofen (20 microM) reduced the amplitude o...
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ژورنال
عنوان ژورنال: Journal of Cerebral Blood Flow & Metabolism
سال: 1990
ISSN: 0271-678X,1559-7016
DOI: 10.1038/jcbfm.1990.41