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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Banker, G. Craig, A. M. Huganir, R. L. Blackstone, C. D. |
| Description | Author Affiliation: Craig AM ( Department of Neuroscience, University of Virginia School of Medicine, Charlottesville 22908.); |
| Abstract | Several immunocytochemical and physiological studies have demonstrated a concentration of neurotransmitter receptors at postsynaptic sites on neurons, but an overall picture of receptor distribution has not emerged. In particular, it has not been clear whether receptor clusters are selectively localized opposite terminals that release the corresponding neurotransmitter. By using antibodies against the excitatory glutamate receptor subunit GluR1 and the inhibitory type A gamma-aminobutyric acid (GABA) receptor beta 2/3 subunits, we show that these different receptor types cluster at distinct postsynaptic sites on cultured rat hippocampal neurons. The GABAA receptor beta 2/3 subunits clustered on cell bodies and dendritic shafts opposite GABAergic terminals, whereas GluR1 clustered mainly on dendritic spines and was associated with glutamatergic synapses. Chronic blockade of evoked transmitter release did not block receptor clustering at postsynaptic sites. These results suggest that complex mechanisms involving nerve terminal-specific signals are required to allow different postsynaptic receptor types to cluster opposite only appropriate presynaptic terminals. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 26 |
| Volume Number | 91 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1994-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Glutamates Physiology Receptors, GABA Metabolism Receptors, Glutamate Synaptic Membranes Ultrastructure Gamma-Aminobutyric Acid Action Potentials Drug Effects Animals Evoked Potentials Fluorescent Antibody Technique Hippocampus Embryology Neurotransmitter Agents Receptor Aggregation Tetrodotoxin Pharmacology Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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