Is the aging process accelerated in chronic obstructive pulmonary disease?
Bibliographic record
Abstract
PURPOSE OF REVIEW: Recent research suggests that chronic obstructive pulmonary disease (COPD) may be a disease of accelerated aging. The senescence hypothesis of COPD pathogenesis is supported by in-vitro, in-vivo and clinical studies. The purpose of this review is to provide a comprehensive overview of the senescence hypothesis of COPD and summarize methods that are used to assess cellular aging. RECENT FINDINGS: Accelerated aging due to exposure to cigarette smoke is hypothesized to induce rapid progression of COPD. Recent studies have shown that COPD patients have enhanced expression of senescence-associated proteins in the lung and in the peripheral circulation compared to healthy controls. Murine models of accelerated aging demonstrate spontaneous emphysematous changes in the lungs, while lungs of COPD patients demonstrate enhanced markers of senescence in fibroblasts and alveolar cells. More recently, studies of telomeres, which shorten with cellular aging, have shown that COPD patients may experience accelerated telomere attrition compared with healthy controls. However, studies to date have been relatively small and have produced heterogeneous results. SUMMARY: The evidence for the role of accelerated aging in COPD progression is growing and senescence is one possible molecular pathway by which COPD occurs.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.004 |
| 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".