Oligodendrocyte precursor cell AMPA receptors differ with age and brain region while kainate receptors remain stable
Bibliographic record
Abstract
Oligodendrocyte precursor cells (OPCs) proliferate and differentiate into myelinating oligodendrocytes throughout life. Many cues modulate OPC proliferation and differentiation, including neuronal activity, which OPCs sense through voltage-gated ion channels and glutamate receptors. However, OPCs display regional and temporal diversity in the membrane surface expression of these channels and receptors, altering their capacity to sense and respond to neuronal activity. Here, we use whole-cell patch-clamp in acute brain slices and bath-apply 3 μM kainate or 10 μM AMPA to investigate the heterogeneity in kainate and AMPA receptor membrane surface expression. We find that, while kainate receptor current density remains stable with age, OPCs do not respond to neuronal kainate receptor-specific drugs. In contrast, AMPA receptor current density differs with age and between regions, likely due to altered Ca 2+ permeability and receptor desensitization. The temporal changes in AMPA-evoked currents in OPCs correlate with reported age-related changes in proliferation and differentiation potential.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".