Impact of Hyperthermia on Inflammation-Related Perinatal Brain Injury
Bibliographic record
Abstract
In a rat model of perinatal inflammation and hypoxia, we investigated the impact of hyperthermia on the deleterious events which are commonly associated with chorioamnionitis. Late-pregnancy gestational day 20 rats received a single injection of either lipopolysaccharide (LPS) Escherichia coli endotoxin or saline. The offspring were born 24-36 h later at full term. The pups underwent hypoxia on the first postnatal day (PND1) immediately after which they were maintained at a planned target temperature for 2 h, before being returned to the dams. The pups were sacrificed on PND5 and the brain tissue was examined. Results showed that LPS alone or in combination with hypoxia was well tolerated. The additional stress of moderate hyperthermia (39°C for 2 h) on PND1 resulted in (a) a significant increase in brain reactive nitrogen species (RNS), (b) a significant increase in caspase-3 activity, (c) a significant increase in c-jun, bax and bcl-2 gene expression and (d) a significant increase in apoptotic cells in the CA1 region of the hippocampus. Hyperthermia was also associated with reduced growth over the ensuing 4 days in a small number of pups. In this model of perinatal inflammation, we demonstrated that brief hyperthermia when superimposed on a perinatal inflammation stimulus and hypoxia led to brain injury while either inflammation alone, or combined inflammatory stimulus and hypoxia did not cause significant damage.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".