Glial glutamate transporters: New actors in brain signaling
Why this work is in the frame
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Bibliographic record
Abstract
Glutamate, the main excitatory amino acid in the vertebrate brain, is critically involved in most of the physiological functions of the central nervous system. It has traditionally been assumed that glutamate triggers a wide array of signaling cascades through the activation of specific membrane receptors. The extracellular levels are tightly regulated to prevent neurotoxic insults. Electrogenic Na(+)-dependent glial glutamate transporters remove the bulk of the neurotransmitter from the synaptic cleft. An exquisitely ordered coupling between glutamatergic neurons and surrounding glia cells is fundamental for excitatory transmission. The glutamate/glutamine and astrocyte/neuron lactate shuttles provide the biochemical framework of this compulsory association. In this context, recent advances show that glial glutamate transporters act as signal transducers that regulate the expression of proteins involved in their compartmentalization with neurons in the so-called tripartite synapse.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it