Depression of windup of spinal neurons in the neonatal rat spinal cord in vitro by an NK3 tachykinin receptor antagonist.
@article{Barbieri2001DepressionOW,
title={Depression of windup of spinal neurons in the neonatal rat spinal cord in vitro by an NK3 tachykinin receptor antagonist.},
author={Mario Barbieri and Andrea Nistri},
journal={Journal of neurophysiology},
year={2001},
volume={85 4},
pages={
1502-11
}
}The effects of the NK3 tachykinin receptor antagonist SR 142801 on synaptic transmission and spike windup induced by trains of stimuli applied to a dorsal root were investigated with intra- and extracellular recording from the neonatal rat spinal cord in vitro. SR 142801 (10 microM) reduced the depolarization (recorded from lumbar ventral roots) induced by senktide (an NK3 agonist) more strongly than the one evoked by substance P methyl ester (SPMeO; an NK1 agonist). Nevertheless, after a long…
38 Citations
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The results suggest that, in vivo, windup also depends on the amplification properties of spinal neurons, the triggering of which requires previous activation of NMDA receptors.
Windup in the Spinal Cord
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- 2009
The windup phenomenon is described and its relationship with central sensitization is defined, which refers to the incrementing discharge of action potentials that may be recorded from post-synaptic dorsal or ventral horn neurons in response to the application of repetitive, low frequency, short duration (electrical) stimuli applied to an afferent input.
Modulation of rhythmic patterns and cumulative depolarization by group I metabotropic glutamate receptors in the neonatal rat spinal cord in vitro
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Results indicate that, during fictive locomotion or disinhibited bursting, endogenous glutamate could activate discrete clusters of subtype 1 mGluRs to facilitate discharges.
The locomotor central pattern generator of the rat spinal cord in vitro is optimally activated by noisy dorsal root waveforms.
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This study is the first demonstration that epochs of rhythmic locomotor-like oscillations applied to a dorsal root represent an efficient stimulus to evoke FL as long as they contain the electrophysiological noise produced within FL cycles.
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