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High Pressure Freezing And Freeze Substitution As Tools For Post-Embedding Immunocytochemistry In Monkey Brain Sections

Published online by Cambridge University Press:  02 July 2020

J.-F. Paré
Affiliation:
Division of Neuroscience, Yerkes Regional Primate Research Center and Dept. of Neurology, Emory University, Atlanta, GA30322
A. Charara
Affiliation:
Division of Neuroscience, Yerkes Regional Primate Research Center and Dept. of Neurology, Emory University, Atlanta, GA30322
Y. Smith
Affiliation:
Division of Neuroscience, Yerkes Regional Primate Research Center and Dept. of Neurology, Emory University, Atlanta, GA30322
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Extract

For the past ten years, research in our laboratory has focused on the synaptic circuitry of GABAergic and glutamatergic networks in the monkey basal ganglia, a group of subcortical brain structures involved in the control of motor and psychoaffective behaviors. Elucidating the distribution and synaptic localization of different subtypes of glutamate and GABA receptors and transporters is essential to understand the basic functioning of these brain structures and develop better therapies for neurodegenerative diseases such as Parkinson's and Huntington's diseases. Although immunoperoxidase labeling allows to localize receptors at the cellular level, this method is generally not suitable for quantification and exact synaptic location of receptors due to the diffuse nature of the peroxidase reaction product. Here, we describe a highly sensitive post-embedding immunogold technique on Lowicryl-embedded ultrathin sections to analyze the subsynaptic distribution of these receptors at the electron microscope level.

Type
Neurobiology
Copyright
Copyright © Microscopy Society of America

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References

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4.This research is supported by NIH grants RR 00 165 and ROl NS 37423-01 and a grant from the American Parkinson Disease Association.Google Scholar