Glucagon-like peptide 2: an update
Bibliographic record
Abstract
Purpose of review Glucagon-like peptide 2 (GLP-2) is a 33-amino acid peptide secreted in a nutrient-dependent manner from gut enteroendocrine cells. The proliferative and antiapoptotic actions of GLP-2 lead to expansion of the mucosal surface area and enhanced capacity for nutrient absorption in multiple models of experimental intestinal injury. These findings have raised the possibility that GLP-2 administration may produce therapeutic benefit in humans with intestinal insufficiency. Recent findings The actions of GLP-2 appear restricted to the gastrointestinal tract, central nervous system, and skeleton. GLP-2 exerts its effects through a G-protein-coupled receptor expressed in enteric neurons or enteroendocrine cells, suggesting that many of its actions are likely indirect through as yet unidentified secondary mediators. Exogenous administration of GLP-2 to mice, rats, or pigs reduces morbidity associated with intestinal damage and improves the structure and function of the intestinal mucosa. GLP-2 also exerts anabolic actions in bone via prevention of resorption. GLP-2 may also act in the brain to enhance neuronal survival via direct antiapoptotic actions. The cytoprotective and proliferative actions of GLP-2 highlight the need for further information on the efficacy and safety of long-term administration of GLP-2 in human subjects. Summary The available evidence suggests that GLP-2 upregulates pathways promoting restoration of intestinal barrier and absorptive function, leading to reduced bacterial translocation, improved nutrient uptake, and enhanced energy absorption. Degradation-resistant GLP-2 analogues are currently being tested in human clinical trials of subjects with inflammatory bowel disease and short bowel syndrome. Hence, GLP-2 may ultimately be used as a therapeutic agent for the treatment of metabolic disorders characterized by insufficient nutrient absorption.
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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 | 0.001 |
| 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".