Dark microglia: a therapeutic target to prevent synaptic loss and neurodegeneration?
Bibliographic record
Abstract
Dark microglia is a distinct state of microglia progressively increasing with aging and present in high numbers in neurodegenerative diseases. Dark microglia are characterised by various ultrastructural markers of cellular stress, including a condensed, electron-dense cytoplasm and nucleoplasm, giving them a dark appearance in electron microscopy. Expression of classical homeostatic microglia markers such as like IBA1, P2RY12 and TMEM119 is significantly down-regulated in dark microglia. Dark microglial cells are also hyper-ramified and make extensive interactions, phagocytic and non-phagocytic, with synapses, myelinated axons, amyloid plaques and the vasculature, suggesting a role in brain remodelling in aging and disease. Emergence of dark microglia is linked to the activation of integrated stress response. It is suggested that metabolic interventions such as ketogenic diets and supplements could be effective at targeting and normalizing dark microglia, with positive outcomes on brain resilience and healthy cognitive aging.
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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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".