Brain Atrial Natriuretic Peptide Neurons Play an Essential Role in Volume Expansion-Induced Release of Atrial Natriuretic Peptide and Natriuresis
Bibliographic record
Abstract
The brain atrial natriuretic peptide (ANP) neuronal system appears to be involved in the increase in plasma ANP which follows blood volume expansion in the rat. To determine if this neuronal system is essential to the natriuresis and increase in plasma ANP which follow volume expansion, highly specific antiserum against ANP (ANP-AB) and/or normal rabbit serum as a control was microinjected into the third cerebral ventricle (3V) of conscious rats, and the effect on the natriuresis and increase in plasma ANP induced by intravenous injection of 2 ml/100 g body weight of 0.3 M NaCl was examined. Although there was no effect of ANP-AB on initial levels of plasma ANP or natriuresis 3 h after 3V injection, the natriuresis in response to blood volume expansion was significantly inhibited. The increase in plasma ANP which followed volume expansion was also significantly reduced at 5 min but recovered at 15 min. The results indicate that the brain ANP neuronal system plays an essential role in the mediation of volume expansion-induced increase in plasma ANP and natriuresis. The failure to block these responses completely may be due to the use of an inadequate dose of antiserum or other brain mechanisms may be able to mediate these responses.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 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 | 0.001 |
| 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".