Vasopressin and Oxytocin Content Are Decreased in the Brain Stems of Spontaneously Hypertensive Rats
Bibliographic record
Abstract
The brain stem and neurohypophyseal content of arginine vasopressin and the brain stem content of oxytocin were measured by radioimmunoassay in 3-, 7-, and 22- to 28-week-old spontaneously hypertensive rats of the stroke-prone strain (SHRSP) and the values were compared to those measured in age-matched normotensive Wistar-Kyoto rats (WKY). When compared to WKY, the content of vasopressin in the brain stems of SHRSP was reduced in all three age-groups; in contrast, the neurohypophyseal contents of vasopressin in the two species were not significantly different at 3 and 7 weeks of age and the content was increased slightly in SHRSP at 22-28 weeks. Similar to the findings for vasopressin in the brain stem, the content of oxytocin in this tissue was reduced in SHRSP at 7 and 22-28 weeks of age. The results demonstrate that brain stem arginine vasopressin levels and neurohypophyseal arginine vasopressin levels may change differentially and that the age-related differences in the brain stem levels of arginine vasopressin and oxytocin in SHRSP and WKY are consistent with the possibility that these peptides may play a role in altering cardiovascular reflex activity.
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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 | 0.000 | 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) | 0.000 | 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".