IMPLICATIONS OF INCREASED INTERCELLULAR VARIABILITY OF LIPOFUSCIN CONTENT WITH AGE IN DENTATE GYRUS GRANULE CELLS IN THE MOUSE
Bibliographic record
Abstract
The purpose of this study was to further characterize lipofuscin (LF) accumulation with aging in brain cells, with a specific focus on the amount of intercellular variability of lipofuscin content within an apparently a homogenous population of dentate gyrus granule cells in the hippocampus of mice, as a function of age and caloric restriction (CR). Three age groups of CR and control mice including groups at maximum lifespan were studied. This study demonstrated that the intercellular variability of lipofuscin content was significantly greater in older mice and was significantly less in mice calorically restricted. Increased variability of metabolic function among cells with age, as measured by increased intercellular variability of lipofuscin content, may represent a definitive mechanism underlying the overall decreased efficiency of tissue and organ functioning that occurs with age. That this is so, is supported by the fact that CR, which has been shown to maintain the "youthful" state of many physiological functions, has been shown in this study to maintain the "youthful" state of low intercellular variability of lipofuscin content within a population of cells. LF accumulation may be a marker for the intrusion of entropy into cell metabolism.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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 source (direct Gemma or distilled Codex), 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".