PD56-08 EFFECT OF SODIUM THIOSULFATE PRE-TREATMENT ON RENAL ISCHEMIA-REPERFUSION INJURY
Bibliographic record
Abstract
You have accessJournal of UrologyTransplantation & Vascular Surgery II (PD56)1 May 2024PD56-08 EFFECT OF SODIUM THIOSULFATE PRE-TREATMENT ON RENAL ISCHEMIA-REPERFUSION INJURY Pierce Nelson, George Dugbartey, and Alp Sener Pierce NelsonPierce Nelson , George DugbarteyGeorge Dugbartey , and Alp SenerAlp Sener View All Author Informationhttps://doi.org/10.1097/01.JU.0001008928.01012.0d.08AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Ischemia-reperfusion injury (IRI) is a major cause of impaired graft function following kidney transplantation. We recently showed that adding sodium thiosulfate (STS), a hydrogen sulfide (H2S) donor, to University of Wisconsin (UW) solution protects against renal IRI. However, it is unknown if treatment of kidney donors with H2S before ischemia can also protect against renal IRI. We hypothesize that STS treatment of kidney donors before graft procurement will protect renal grafts against IRI and thereby improve graft function. METHODS: Rat (NRK-52E) and human (HK-2) kidney epithelial cells were exposed to 24 (NRK-52E) or 18 (HK-2) hours of 37°C hypoxia and 24 hours of reoxygenation. NRK-52E cells were treated with 150 μM STS for 2 hours before hypoxia while HK-2 cells were treated with 150 μM, 500 μM, 1 mM, 5 mM, or 10 mM of STS for 24 hours before hypoxia. Cell viability was assessed via flow cytometry. In our in vivo model, donor rats were injected with saline or 2.4 mg STS/kg 30 minutes before organ procurement. Renal grafts were stored in UW or UW+150 μM STS at 4°C for 24 hours and transplanted into recipient rats, which were monitored until post-operative day (POD) 3 and sacrificed to measure blood, urinary, and tissue markers of graft function and injury. RESULTS: STS pre-treatment significantly improved cell viability (p<0.01) in NRK-52E cells while preliminary data suggest that STS pre-treatment improves cell viability in HK-2 cells. Our preliminary in vivo data suggest that STS pre-treatment and supplementation to UW solution improve recipient kidney function. CONCLUSIONS: Our results show that STS pre-treatment is protective in in vitro models of warm IRI. Preliminary data from our in vivo model suggest STS pre-treatment may protect against transplantation-induced renal IRI, warranting further study. Download PPTDownload PPTDownload PPT Source of Funding: Canadian Institutes of Health Research Canada Graduate Scholarship - Master's © 2024 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 211Issue 5SMay 2024Page: e1205 Advertisement Copyright & Permissions© 2024 by American Urological Association Education and Research, Inc.Metrics Author Information Pierce Nelson More articles by this author George Dugbartey More articles by this author Alp Sener More articles by this author Expand All Advertisement PDF downloadLoading ...
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| 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 | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.029 | 0.003 |
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".