Effect of Sex Hormones on Gastric Secretion and on Gastric Mucosa in Oophorectomized Histamine Stimulated Rats
Bibliographic record
Abstract
Gastric secretory function was studied for 24 h in rats bearing permanent gastric fistulas and permanent intravenous cannulas. Rats were oophorectomized and treated for five months with testosterone or estrone, prior to gastric function studies. Gastric juice was collected for 24 h during the infusion of saline or histamine, and then gastric examined for the presence of peptic ulcers. All androgen-treated rats had peptic ulcers at the end of 24 h histamine infusion. Only 14% of estrone-treated rats had these lesions, under similar stimulation. All ulcers were localized in glandular mucosa. No ulcers were found in oophorectomized, untreated controls, infused with histamine. Volume, HCl and pepsin output were not affected by hormonal treatment. Androgen enhanced the susceptibüity of gastric mucosa to the peptic action of gastric juice. However, the study of gastric function did not explain this ulcerogenic effect of male sex hormone.
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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) | 0.001 | 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 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".