Bibliographic record
Abstract
Mouse models with targeted deletion of the genes encoding the enzyme 25-hydroxyvitamin D 1alpha-hydroxylase [1alpha(OH)ase], and the vitamin D receptor (VDR), have provided considerable insight into the regulation of mineral and skeletal physiology by 1,25-dihydroxyvitamin D [1,25(OH)(2)D]. Dietary manipulation induced different phenotypic changes and demonstrated that parathyroid gland function is coordinately regulated by calcium and 1,25(OH)(2)D, but that mineralization of bone reflects ambient calcium (and phosphorus) levels rather than direct actions of the 1,25(OH)(2)D/VDR system. In contrast, increased calcium absorption and optimal osteoblastogenesis and bone formation is modulated by the 1,25(OH)(2)D/VDR system. Similar models have also been employed to study extraskeletal vitamin D actions. For example, increased blood pressure, activation of the renin/angiotensin system, myocardial hypertrophy, and cardiac dysfunction were observed in 1alphaOHase(-/-) mice, and could be prevented by 1,25(OH)(2)D(3) administration. These models allow controlled examination of the pathophysiology associated with1,25(OH)(2)D deficiency and intervention to prevent and treat these disorders.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.004 |
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".