Pulsatile Nature of Luteinizing Hormone Release Is Maintained during Luteinizing Hormone-Releasing Hormone Stimulation in Normal Male Rats
Why this work is in the frame
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Bibliographic record
Abstract
The plasma LH concentration is believed to be reasonably steady in normal male rats. We found that LH is released in a regular pulsatile fashion. The overall mean concentration of plasma LH in normal male rats was 46.6 +/- 4.4 (mean +/- SEM) ng/ml. The normal male rats showed periodic LH pulses: the mean pulse amplitude was 144.4 +/- 25.5 ng/ml and the inter-peak interval was 22.5 +/- 2.0 min. Each pulse lasted 9.7 +/- 0.8 min. When LH-RH (1 microgram/kg) was injected as a bolus, the peak concentration was attained in 10-30 min reaching a peak concentration of 279.4 +/- 39.6 ng/ml. Distinct pulsatile bursts of plasma LH were discernible during the period of elevated plasma LH concentration. When a higher dose of LH-RH (5 micrograms/kg) was administered, the LH concentration slowly increased to a peak concentration of 400.2 +/- 38.7 ng/ml in 20-40 min. The pulsatile nature of the LH concentration was recognizable with distinct bursts. We have observed that: (a) normal male rats release LH in a pulsatile fashion with an approximate 20-min inter-peak interval; (b) mean LH pulses last less than 10 min, and (c) the LH pulses are visible even with elevated LH and LH-RH concentrations in the general circulation.
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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 | 0.004 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.004 |
| 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 it