Disruption of the transsulfuration pathway by acute kidney injury causes intestinal damage
Bibliographic record
Abstract
Acute kidney injury (AKI) impairs intestinal function through oxidative stress. The transsulfuration pathway is essential for sulfur amino acid metabolism and antioxidant defense through glutathione biosynthesis. This study investigated how AKI caused intestinal injury and the mechanisms involved. AKI was induced in Sprague-Dawley rats through kidney ischemia (45 min)-reperfusion (24 h). AKI decreased intestinal glutathione (antioxidant) levels and compromised intestinal barrier function. Glutathione biosynthesis in mammals requires cysteine made through the reverse transsulfuration pathway, catalyzed by cystathionine beta-synthase (CBS) and cystathionine gamma-lyase (CSE). AKI decreased the expression of these enzymes in intestinal epithelium. AKI also altered gut microbiota composition and the expression of bacterial enzymes in the forward transsulfuration pathway, which could disrupt intestinal antioxidant defense. The inhibition of this pathway in gut epithelial cells reduced glutathione levels and tight junction protein expression. These results suggest that the disruption of the transsulfuration pathway impairs antioxidant defense, leading to intestinal barrier damage and dysbiosis in AKI.
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How this classification was reachedexpand
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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".