Nitric oxide formation from glyceryl trinitrate in the developing guinea-pig hippocampus
Bibliographic record
Abstract
Glyceryl trinitrate (GTN) is classified as an organic nitrate vasodilator drug. GTN is considered to be a prodrug because it undergoes biotransformation at its site of action to form nitric oxide (NO) or a NO adduct, which produces its pharmacologic effect. The objectives of this study were to determine whether the hippocampus can biotransform GTN to NO using aerobic conditions, and whether biotransformation of GTN to NO is age-dependent during postnatal life. Time-dependent formation of NO occurred during the incubation of 100 microM GTN with 2.5% (w/v) homogenate of guinea-pig hippocampus at 37 degrees C using aerobic conditions. GTN-derived NO formation was similar in magnitude for the three selected postnatal ages that were studied, that is, postnatal days 10, 20 and > 60. The data demonstrate that the capacity of the hippocampus for NO formation from GTN is fully developed in the guinea-pig in early postnatal life. In view of these findings, it is conceivable that a NO donor drug, selectively metabolized to NO in the hippocampus, could be a useful therapeutic intervention to mitigate structural and/or functional defects in this brain region resulting from decreased NO formation or availability.
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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 | 0.001 | 0.000 |
| 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".