Differential Effects of PPAR-γ Activation vs. Chemical or Genetic Reduction of DPP-4 Activity on Murine Bone Quality
Bibliographic record
Abstract
This study characterized the effects of two anti-diabetic drugs, a thiazolidinedione\n(TZD) and a Dipeptidyl Peptidase-4 (DPP-4) inhibitor on bone quality in a glucose\nintolerant mouse model. Bone quality in a DPP-4 -/- mouse model was also examined. Bone\nquality was evaluated through densitometry, mechanical testing and techniques to assess\nremodeling, structural and mineral properties.\nTZD treatment negatively affected trabecular mechanical properties in male, female\nand ovariectomized female (OVX) mice. Male mice exhibited the greatest effect due to TZD\ntreatment with reduced vertebral vBMD, trabecular structure and bone formation. DPP-4 inhibitor treatment improved vertebral vBMD and trabecular architecture in female mice but improvements were lost in females following OVX. Male, female and OVX mice\nexperienced increased trabecular mineralization due to DPP-4 inhibitor treatment. Genetic inactivation of DPP-4 did not produce a major bone phenotype in male and female mice but lead to reduced femoral geometry and mechanics in OVX mice.
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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".