Evidence for Epigenetic Regulation of Gene Expression and Function in Chronic Experimental Diabetic Neuropathy
Why this work is in the frame
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Bibliographic record
Abstract
Diabetic polyneuropathy (DPN) is a common but irreversible neurodegenerative complication of diabetes mellitus. Here we show that features of sensory neuron damage in mice with chronic DPN may have altered epigenetic micro RNA (miRNA) transcriptional control. We profiled sensory neuron messenger RNA and miRNA profiles in mice with type I diabetes mellitus and findings of DPN. Diabetic sensory dorsal root ganglia neurons showed a pattern of altered messenger RNA profiles associated with upregulated cytoplasmic sites of miRNA-mediated messenger RNA processing (GW/P bodies). Dorsal root ganglia miRNA microarray identified significant changes in expression among mice with diabetes, the most prominent of which were a 39% downregulation of mmu-let-7i and a 255% increase in mmu-miR-341; both were identified in sensory neurons. To counteract these alterations, we replenished let-7i miRNA by intranasal administration; in a separate experiment, we added an anti-miR that antagonized elevated mmu-341 after 5 months of diabetes. Both approaches independently improved electrophysiologic, structural, and behavioral abnormalities without altering hyperglycemia; control sequences did not have these effects. Dissociated adult sensory neurons exposed to an exogenous mmu-let-7i mimic displayed enhanced growth and branching, indicating a trophic action. These findings identify roles for epigenetic miRNA alterations and enhanced GW/P expression in diabetic dorsal root ganglia that contribute to the complex DPN phenotype.
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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 | 0.000 |
| 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 it