Targeting angiopoietin like-2 positive senescent cells improves cognitive impairment in adult male but not female atherosclerotic LDLr−/−;hApoB100+/+ mice
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
(ATX) mice-a model exhibiting vascular dysfunctions and cognitive impairment-the role of senescence was investigated by targeting angiopoietin-like 2 (angptl2), a senescence marker. Adult ATX mice of both sexes received AAV1-sh-angptl2; cognition was assessed via the Morris Water Maze, cerebrovascular functions were evaluated in vitro and in vivo and hippocampal transcriptomic signatures were analyzed using single-nuclei RNA-sequencing. Sh-angptl2 restored delayed memory retention in male mice, but impaired learning and short-term memory in females. Sh-angptl2 had no effect on cerebrovascular functions. Transcriptomic analyses revealed sex-specific responses: endothelial senescence pathways were predominantly activated in male cells and repressed by sh-angptl2. In contrast, sh-angptl2 up-regulated senescence pathways in all cell types in females. Key impacted senescent cell types were neurons, choroid plexus epithelial (CP-epithelial) cells, and oligodendrocyte precursor cells (OPCs), not endothelial cells. In male neurons, CP-epithelial cells and OPCs, gene-related pathways induced by sh-angptl2 revealed enhanced neuronal energy metabolism but reduced synaptic pathways, higher synaptic formation with reduced intracellular signaling, structural remodeling and reduced synaptic development. In female cells, sh-angptl2 disrupted GABAergic signaling despite promoting neuronal growth, up-regulated stress-response and decreased gene and protein processing, leading to inefficient neurogenesis. Although neuroprotective ApoE was upregulated in both sexes, males had higher expression of ApoE receptor subtypes, supporting better synaptic resilience. In conclusion, accumulation of non-vascular senescent cells contributes to cognitive impairment in male ATX mice, not females, highlighting the need for sex-specific senotherapies strategies in cardiovascular diseases.
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.
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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.000 | 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 it