Allostatic regulation of neuronal excitability by transient ischemia

Allostatic regulation of neuronal excitability by transient ischemia.

During development and learning, a neuron actively maintains a stable state of excitability by adjusting the strength of its synaptic inputs (Turrigiano and Nelson, 2004). This homeostatic synaptic plasticity ensures that a neuron maintains a set-point spike firing rate when the overall synaptic input is increasing or decreasing (Turrigiano, 2008). Beside this homeostatic synaptic plasticity, n...

BC 1 Regulation of mGluR - Mediated Neuronal Excitability

Circadian redox rhythms in the regulation of neuronal excitability.

Oxidation-reduction reactions are essential to life as the core mechanisms of energy transfer. A large body of evidence in recent years presents an extensive and complex network of interactions between the circadian and cellular redox systems. Recent advances show that cellular redox state undergoes a ~24-h (circadian) oscillation in most tissues and is conserved across the domains of life. In ...

BC1 regulation of metabotropic glutamate receptor-mediated neuronal excitability.

Regulatory RNAs have been suggested to contribute to the control of gene expression in eukaryotes. Brain cytoplasmic (BC) RNAs are regulatory RNAs that control translation initiation. We now report that neuronal BC1 RNA plays an instrumental role in the protein-synthesis-dependent implementation of neuronal excitation-repression equilibria. BC1 repression counter-regulates translational stimula...

ultrastructural study of neuronal death in rat hippocampus after transient and permanent focal cerebral ischemia

objective: morphological changes of ca1 neurons in rat hippocampus after transient and permanent focal cerebral ischemia were studied to clarify the nature of postischemic cell death in the subfield. materials and methods: male adult rats were divided into 3 groups: control (shamoperated), transient ischemic group (30 minutes of mcao followed by 48 hours of reperfusion), and permanent ischemic ...