Structural Characterization of APSN from <i>Astragalus membranaceus</i> and Its Potential Therapeutic Effect on Immune Dysregulation and Tissue Damage
Bibliographic record
Abstract
Addressing the global health impact of inflammatory and immune-mediated diseases, this study focused on purifying and characterizing a neutral polysaccharide, APSN, from the Astragalus membranaceus . Employing high-performance gel permeation chromatography (HPGPC), Fourier-transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR) spectroscopy, we elucidated APSN’s structural features, revealing a highly branched glucan with a 1,4-α- d -glucopyranosyl main chain and side chains at the O-6 position. Separately, we assessed APSN’s biological activity, finding that it significantly modulates immune responses by inhibiting the NF-κB pathway in RAW264.7 macrophages and promotes endothelial cell proliferation and angiogenesis-related gene expression in HUVECs. These results position APSN as a potential therapeutic for diseases characterized by immune dysregulation and tissue damage, warranting further investigation of its mechanisms and clinical efficacy.
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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".