Radiation-induced craniofacial bone growth inhibition: Investigation of the mechanisms and radioprotection in vitro
Bibliographic record
Abstract
Radiation resulted in a dose-dependent inhibition of survival and two-fold changes in osteoblast-like phenotype. Pre-treatment with Amifostine or WR-1065 (in primary and clonal cells, respectively) resulted in a significantly improved survival at clinically relevant radiation doses and drug concentrations. In this work, the cellular and functional mechanisms of radiation effects with and without radioprotection were investigated in cultured craniofacial osteoblast-like cells in order to understand the pathophysiology of radiation-induced craniofacial bone growth inhibition. Primary periosteal osteoblast-like cells were obtained from the infant rabbit orbitozygomatic complex following radiation with or without intravenous Amifostine. MC3T3-E1 mouse calvarial osteoblastic cells underwent gamma-radiation with and without WR-2721 or WR-1065 (10-3-10-7 M, 30 minutes before radiation). Survival, viability and osteoblast phenotype were assessed. This work establishes that Amifostine affords significant radioprotection of craniofacial osteoblast-like cells. This is important in devising pharmacological strategies for preventing impaired cramofacial bone growth in the survivors of head and neck cancer.
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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) | 0.002 | 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".