The Hexosamine Biosynthesis Pathway
Bibliographic record
Abstract
Prolonged hyperglycemia is the critical etiological factor in the development of the microvascular complications of diabetes including diabetic nephropathy (, ). The tissues subject to these complications appear to be susceptible by virtue of abundant expression of cell surface facilitative glucose transporters resulting in the transport of glucose down its concentration gradient. The fact that increased glucose uptake and metabolism promotes the pathological changes leading to tissue damage has led to great interest in the pathways of disposition of glucose metabolites and their regulation. There are at least five pathways of glucose metabolism that, either directly or indirectly, appear to contribute to the complications of diabetes. This current concept, reviewed by Brownlee (), is supported by a number of studies. The increased cellular entry of glucose results first in augmented glycolytic flux and glucose oxidation. A byproduct of mitochondrial substrate metabolism, i.e., electron transport and oxidative phosphorylation, is superoxide, O2-. The increased reactive oxygen species (ROS) production by mitochondria produces oxidative stress, a state in which the formation of ROS exceeds the capacity of cellular endogenous antioxidant removal systems. The excess ROS results in inhibition of the redox-sensitive glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH), possibly via activation of poly-ADP-ribose polymerase (). Poly-ADP-ribose polymerase activation is thought to be owing to ROS-induced DNA damage.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 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) | 0.001 | 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 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".