Perinatal iron deficiency results in altered developmental expression of genes mediating energy metabolism and neuronal morphogenesis in hippocampus
Why this work is in the frame
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Bibliographic record
Abstract
The human and rat hippocampus is highly susceptible to iron deficiency (ID) during the late fetal, early neonatal time period which is a peak time of regulated brain iron uptake and utilization. ID during this period alters cognitive development and is characterized by distinctive, long-term changes in hippocampal cellular growth and function. The fundamental processes underlying these changes are not entirely understood. In this study, ID-induced changes in expression of 25 genes implicated in iron metabolism, including cell growth and energy metabolism, dendrite morphogenesis, and synaptic connectivity were assessed from postnatal day (P) 7 to P65 in hippocampus. All 25 genes showed altered expression during the period of ID (P7, 15, and 30); 10 had changes on P65 after iron repletion. ID caused long-term diminished protein levels of four factors critical for hippocampal neuron differentiation and plasticity, including CamKII alpha, Fkbp1a (Fkbp12), Dlgh4 (PSD-95), and Vamp1 (Synaptobrevin-1). ID altered gene expression in the mammalian target of rapamycin (mTOR) pathway and in a gene network implicated in Alzheimer disease etiology. ID during late fetal and early postnatal life alters the levels and timing of expression of critical genes involved in hippocampal development and function. The study provides targets for future studies in elucidating molecular mechanisms underpinning iron's role in cognitive development and function.
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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 | 0.001 | 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 it