Glucagon, the Alpha Cell, and Potential Targets for Diabetes Treatment
Bibliographic record
Abstract
Glucagon is a 29-amino acid hormone synthesized and secreted by the pancreatic alpha cell in the islets of Langerhans. It is the primary glucose counter-regulatory hormone, secreted by the alpha cell to maintain euglycemia by stimulating hepatic gluconeogenesis and glycogenolysis. In addition to glucose, the alpha cell senses and responds to a number of inputs, such as paracrine factors, neurotransmitters, and other nutrients, including amino acids, to regulate the secretion of glucagon. Disruption of this fine regulation results in excessive glucagon secretion (hyperglucagonemia) and contributes to the pathogenesis of diabetes. In this mini-review, we summarize the current understanding of glucagon biosynthesis and intracellular trafficking, and we discuss emerging concepts in amino acid sensing and signaling that underpin the biology of the alpha cell and that may provide clues to the control of the hyperglucagonemia of diabetes.
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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 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.006 | 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".