An Intravenous Injection of Reelin Rescues Endogenous Reelin Expression and Epithelial Cell Apoptosis in the Small Intestine Following Chronic Stress
Why this work is in the frame
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Bibliographic record
Abstract
Chronic stress disrupts the integrity of the gut environment, including leaking of the intestinal epithelium. Reelin, an extracellular matrix protein, is released from cells of the lamina propria and promotes epithelial cell proliferation and migration up the crypt-villus axis to facilitate renewal of the gut lining. In the present study, we evaluated Reelin expression and apoptosis in the small intestine of Long Evan's rats treated with recombinant Reelin (3 µg) or vehicle following 3 weeks of daily corticosterone (40 mg/kg/day) or vehicle injections. We show that Reelin- and cleaved caspase-3- immunoreactive cells are diminished in the lamina propria or epithelial cells of the gut lining following chronic stress (∼ 50% and 55%, respectively), and that a single injection of 3 µg of Reelin delivered intravenously can reverse these parameters. We also found Reelin cell counts in the small intestine did not correlate to counts in the hippocampus regardless of exposure to chronic stress or Reelin treatment. Our results suggest that Reelin may serve a protective function over gut barrier integrity through the restoration of epithelial cell turnover, and that Reelin may have a role in reversing chronic stress-induced changes to the gut environment.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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