Heat Shock Treatment Prior to Myocardial Infarction Results in Reduced Ventricular Remodeling
Why this work is in the frame
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Bibliographic record
Abstract
BACKGROUND: Heat shock (HS) treatment has been suggested to confer myocardial protection following ischemia. However, the effects of HS on left ventricular (LV) remodeling weeks after infarction have yet to be described. METHODS: Myocardial infarction (MI) was created by coronary ligation in Lewis rats. Two experimental groups of animals were created: HS+MI group (n = 13) and MI group (n = 13). HS treatment consisted of an elevation in core temperature to 42 degrees C for 15 min, 24 hr prior to MI. LV remodeling was assessed by transthoracic echocardiography (day 0, 1, 7, and 28) and by morphometric histology (day 28). RESULTS: There was no significant difference in infarct size (TTC stain 24 hr) between HS+MI and MI groups. Using transthoracic echo there was a significant preservation of LV ejection fraction and fractional shortening in the HS+MI group as compared to MI group (7 and 28 days). Similar trends were seen by histology at 28 days but failed to reach significance. HSP27 expression by myocardial cells was shown to remain up-regulated (at 28 days) in both groups at the edges of the infarct area as compared to control myocardium. CONCLUSIONS: Our findings suggest that HS treatment prior to MI can result in a significant decrease in LV remodeling independent of a reduction in infarct size.
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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 | 0.002 |
| 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