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Glutamate transporters in glial plasma membranes: Highly differentiated localizations revealed by quantitative ultrastructural immunocytochemistry
Open accessAbstract
The glutamate transporters GLT-1 and GLAST were studied by immunogold labeling on ultrathin sections of rat brain tissue embedded in acrylic resins at low temperature after freeze substitution. Both proteins were selective markers of astrocytic plasma membranes. GLT-1 was much higher in hippocampal astrocytes than in cerebellar astrocytes. Astroglial membrane GLAST densities ranked as follows: Bergmann > cerebellar granular layer approximately hippocampus > cerebellar white matter. No astrocyte appeared unlabeled. Astrocytic membranes facing capillaries, pia, or stem dendrites were lower in glutamate transporters than those facing nerve terminals, axons, and spines. Parallel fiber boutons (glutamatergic) synapsin on interneuron dendritic shafts were surrounded by lower transporter densities than those synapsing on Purkinje cell spines. Our findings suggest the localizations of glutamate transporters are carefully regulated.
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Citations
Cited by
Danbolt, N. C. (2001) · Progress in Neurobiology · doi:10.1016/s0301-0082(00)00067-8 · Cited by 4,227
Self-citationVerkhratsky, A., & Nedergaard, M. (2018) · Physiological Reviews · doi:10.1152/physrev.00042.2016 · Cited by 1,678
MICROGLIA AS MEDIATORS OF INFLAMMATORY AND DEGENERATIVE DISEASES
González-Scarano, F., & Baltuch, G. (1999) · Annual Review of Neuroscience · doi:10.1146/annurev.neuro.22.1.219 · Cited by 984
Cerebellar circuitry as a neuronal machine
Ito, M. (2006) · Progress in Neurobiology · doi:10.1016/j.pneurobio.2006.02.006 · Cited by 880
VGLUTs define subsets of excitatory neurons and suggest novel roles for glutamate
Fremeau, R. T., Voglmaier, S., Seal, R. P., & Edwards, R. H. (2004) · Trends in Neurosciences · doi:10.1016/j.tins.2003.11.005 · Cited by 745
Metadata
- Authors
- Chaudhry, F. A., Lehre, K. P., Lookeren Campagne, M. V., Ottersen, O. P., Danbolt, N. C., & Storm-Mathisen, J.
- Venue
- Neuron
- Publisher
- Elsevier BV
- Published
- 1995-09
- Volume
- 15
- Issue
- 3
- Pages
- 711-720
- ISSN
- 0896-6273 (ISSN-L)
- OpenAlex
- W2030352252
- Cited by
- 826
- References
- 0
- FWCI
- 10.29
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Glutamate transporters in glial plasma membranes: Highly differentiated localizations revealed by quantitative ultrastructural immunocytochemistry. https://app.cochat.ai/papers/10.1016/0896-6273(95)90158-2
- The paper
- Chaudhry, F. A., Lehre, K. P., Lookeren Campagne, M. V., Ottersen, O. P., Danbolt, N. C., & Storm-Mathisen, J. (1995). Glutamate transporters in glial plasma membranes: Highly differentiated localizations revealed by quantitative ultrastructural immunocytochemistry. Neuron. https://doi.org/10.1016/0896-6273(95)90158-2
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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