Guar gum consumption increases hepatic nuclear SREBP2 and LDLr expression in pigs fed an atherogenic diet
Bibliographic record
Abstract
The mRNA and protein expression of sterol regulatory element binding protein 2 (SREBP2) and low density lipoprotein receptor (LDLr) were examined in pigs fed an atherogenic control diet or the control diet supplemented with 10% guar gum (GG). Compared to the control group, GG consumption reduced (P<0.05) plasma total cholesterol (27%), LDL cholesterol (37%), and hepatic free cholesterol concentrations. GG consumption increased hepatic LDLr mRNA (1.8 fold, P=0.09) and protein (2 fold, P<0.05) expression in comparison to the control group. Hepatic SREBP2 mRNA expression was not altered (P>0.05) in response to GG consumption. While expression of the cytoplasmic mature form of SREBP2 was similar (P>0.05) between the two groups, GG consumption increased (P<0.05) the expression of the cytoplasmic precursor (3 fold) and nuclear active forms (1.5 fold) of the SREBP2. We conclude that a reduction in hepatic free cholesterol concentration in response to GG consumption enhances nuclear SREBP2 expression by post‐transcriptional events that are independent of the proteolytic release of the mature protein from the golgi apparatus. Furthermore, accumulation of nuclear SREBP2 increases the expression of hepatic LDLr and mediates the hypocholesterolemic effects associated with GG consumption. Supported by OMAFRA of Canada.
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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 | 0.000 |
| 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 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".