The Use of an Approved Biodegradable Polymer Scaffold as a Solid Support System for Improvement of Islet Engraftment
Why this work is in the frame
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Bibliographic record
Abstract
The aim of this study was to investigate whether the use of a medically approved biodegradable scaffold as a solid support system would enhance graft survival following transplantation into the omental pouch in a preclinical large animal model. Six beagle dogs underwent total pancreatectomy followed by islet autotransplantation into the omental pouch. Four dogs received islets seeded in a biodegradable polymer scaffold and two received free islets without a scaffold. All four animals that received islets in the scaffold became normoglycemic without exogeneous insulin injection. One dog, transplanted with the largest number of islets, maintained a normal metabolic state until the graft was removed at 5 months posttransplant. In two out of the three that received a marginal islet mass, insulin independence was sustained up to 2 months. In contrast, two dogs transplanted with a similar marginal mass without the scaffold never became normoglycemic. Histological examination of the grafts in the scaffold showed numerous well-granulated, insulin-containing cells as well as glucagon-positive cells. These results indicate that biodegradable scaffolds may enhance survival and function of islet grafts. Manipulation of the microenvironment of transplanted islets may constitute the basis for new approaches to enhance islet engraftment.
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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 it