Study of Psoriatic Epidermal Cell Kinetics and Cell Death after Oral Methotrexate
Bibliographic record
Abstract
Epidermal cell proliferation in psoriasis was studied after oral methotrexate using tritiated uridine. Psoriatic enteropathy has in the past been reported to reduce the absorption of methotrexate administered orally but this study showed that the onset of inhibition of mitosis and DNA synthesis occurred at the same time as after intramuscular administration of the drug. The cell kinetic data indicate that cells were blocked at the G1/S interface, and the kinetics of inhibition are discussed in terms of their implications for the mode of action of methotrexate in psoriasis. Considerable numbers of dead cells were seen in the epidermis from 6 to 24 h after oral methotrexate. The mode of action of methotrexate in psoriasis is currently unknown but whatever other actions it may have, any global hypothesis of its action will have to incorporate a flux to epidermal cell death.
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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) | 0.000 | 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) | 0.002 | 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".