The neonatal brain mitochondrial ribosomal protein subunit 6 gene expression is normal in the lethal Smit1 knockout and independent of the rescue of the phenotype with prenatal myo‐inositol treatment
Bibliographic record
Abstract
Myo‐inositol (Ins) is an essential component of phosphatidylinositol, polyphosphoinositides, and inositol polyphosphates including the second messenger, Ins‐1,4,5‐P3. Ins also serves as an organic osmolyte. Active transport of Ins from the extracellular environment is primarily dependent on the sodium/myo‐inositol cotransporter 1, SLC5A3 (SMIT1). To gain insight into the biological role of Ins, and of the SLC5A3 protein, we have generated a knock out mouse model. The Slc5a3 KO newborn mice die post partum, but can be rescued if the pregnant mother is treated with 1% Ins enriched water. Our results show that Ins levels increased in brain and whole KO fetuses following rescue with 1% Ins. Yet, the tissue PtdIns content was normal in the KO with or without Ins treatment. Most importantly, the expression of the mitochondrial ribosomal protein subunit 6 (Mrps6) gene, which shares exon 1 with the Slc5a3 gene, was also not aberrantly expressed in E18.5 KO fetal brain. With or without 1% Ins treatment, selective neuronal immunostaining was normal in the central and peripheral nervous system of E18.5 fetuses and in adult mice, who also had a normal complete necropsy. We conclude that the role of Ins in pathophysiology, and perhaps also in regulation of the SLc5a3/Mrps6 gene(s), which phylogenetically share genomic space since the appearance of vertebrates, requires better delineation, especially in fetal development.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".