Effects of Ionizing Radiation on the Biophysical Properties of Type I Collagen
Bibliographic record
Abstract
Ionizing radiation is used routinely in clinical practice for diagnostic and therapeutic purposes. However, its effects on collagen, one of the most abundant structural proteins in the human body, are not well characterized. This study aims to assess the effects of ionizing radiation at three dose levels and in two hydration states on the morphology, mechanical properties, protein stability, and fluorescence lifetime of engineered acellular type I collagen samples. We demonstrate that ionizing radiation can alter the mechanical properties of collagen fibrils with minimal morphological change and that these changes arise from inter-fibrillar changes. We also demonstrate that the direction of mechanical change (stiffening or softening) and change in inter-fibrillar biochemistry (increased or decreased fluorescence lifetime) varies based on hydration status at the time of irradiation, suggesting different underlying mechanisms. Clinically, these changes may have implications in the pathophysiology and management of radiation-related sequelae, including osteoradionecrosis and cancer dissemination.
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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".