Dietary lipoic acid supplementation prevents fructose-induced hypertension in rats.
Bibliographic record
Abstract
BACKGROUND AND AIMS: In fructose-induced hypertension in Wistar-Kyoto (WKY) rats, excess endogenous aldehydes bind sulfhydryl groups of membrane proteins, alter membrane Ca2+ channels and increase cytosolic free calcium and blood pressure. The thiol compound N-acetyl cysteine prevents such hypertension by binding these aldehydes and normalizing membrane Ca2+ channels and cytosolic free calcium. The aim of this work was to investigate whether dietary supplementation of an endogenous fatty acid, alpha-lipoic acid, another thiol compound known to increase cysteine and glutathione, prevents this hypertension and its associated biochemical and histopathological changes. METHODS AND RESULTS: Starting at seven weeks of age, animals were divided into three groups of six animals each and treated as follows: control (normal diet and normal drinking water); fructose (normal diet and 4% fructose in drinking water); fructose + lipoic acid (diet supplemented with lipoic acid 500 mg/kg feed and 4% fructose in drinking water). After 14 weeks, systolic blood pressure, platelet [Ca2+]i, plasma glucose and insulin and kidney and aortic aldehyde conjugates were significantly higher in the fructose group. These also displayed smooth muscle cell hyperplasia in the small arteries and arterioles of the kidneys. CONCLUSION: Dietary alpha-lipoic acid supplementation in fructose-treated WKY rats may prevent their increase in systolic blood pressure by normalizing cytosolic [Ca2+], blood glucose and insulin, kidney and aortic aldehyde conjugates and preventing adverse renal vascular changes.
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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) | 0.000 | 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 | 0.001 |
| 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".