<b>Protease Nexin-1 in Reproductive Tissues: a Review</b>
Bibliographic record
Abstract
The Serpins comprise a family of proteins that bind irreversibly to and inactivate serine proteases such as thrombin and plasminogen activators. This review summarizes the current knowledge of one Serpin, SerpinE2 (also known as protease nexin-1, PN-1) in the reproductive system. By virtue of the ability to regulate the activity of secreted proteases, PN-1 is most likely involved in tissue remodeling and extracellular matrix formation and degradation. Accordingly, PN-1 is expressed in the developing hypothalamus and testis, both sites of significant cell migration. PN-1 is also upregulated during tissue remodeling in the ovarian follicle (at ovulation) and in the placenta during implantation, and downregulated in the mammary gland during pregnancy and lactation. PN-1 has been shown to be essential for formation of the copulatory plug in rodents. The physiological role of PN-1 is not clear, but given the fairly widespread expression of this protein in reproductive tissues, this protein clearly deserves greater attention from reproductive biologists.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.003 |
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".