Biodegradable hypoxia biomimicry microspheres for bone tissue regeneration
Bibliographic record
Abstract
The iron chelator deferoxamine is a hypoxia biomimicry and has received interest as a potential therapeutic in tissue engineering and regenerative medicine. Recently, local injection of this iron chelator deferoxamine has proven to increase bone healing through the activation of the hypoxia-inducible factor-1 signaling pathway that augments angiogenesis and osteogenesis. Repeated injections of deferoxamine are required to achieve local therapeutic levels at fracture site. To achieve local therapeutic levels at fracture site without the use of multiples injections and associated pain and infection issues, we designed and prepared polymeric microspheres made of polycaprolactone and poly(ethylene oxide), in which deferoxamine was encapsulated, via a melting process. The application of this process has enabled to obtain spheres of different poly(ethylene oxide) concentrations for optimizing the drug release rate. The effective local release carrier offers a predetermined rate that can mimic the effect of repeated deferoxamine injections over a 14-day period to selectively stimulate bone repair and thus improve the biological performance to the point where ideally synthetics begin to challenge autograft dominance as the bone replacement of choice.
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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 | 0.000 | 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) | 0.001 | 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 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".