Impact of shear rate pattern on upper and lower limb conduit artery endothelial function in both spinal cord‐injured and able‐bodied men
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
NEW FINDINGS: What is the central question of this study? This study addresses the following two central questions. (i) What is the impact of vascular deconditioning after spinal cord injury (SCI) on shear rate patterns and endothelial function? (ii) What is the impact of acutely altered shear rate on endothelial function in both SCI and able-bodied control subjects? What is the main finding and its importance? Two main findings in the present study were as follows: (i) reduced superficial femoral artery endothelial function in the SCI group; and (ii) acutely altered shear rate decreased endothelial function in both SCI and able-bodied control subjects. These findings may shed some light on future interventions taking into account these regulatory mechanisms. Spinal cord injury (SCI) induces vascular deconditioning below the level of the lesion and disrupts sympathetic innervation of blood vessels. It is unclear how these changes affect shear rate (SR) profiles and endothelial function when compared with able-bodied (AB) persons. Recent evidence suggests that periods of increased retrograde SR are associated with acute decreases in endothelial function, but is unknown how modified SR patterns influence sublesional vasculature in SCI. The present study examined the acute and chronic effects of altered SR patterns and oscillatory shear index on endothelial function via relative flow-mediated dilatation (FMD%) in both the brachial and superficial femoral arteries (BA and SFA, respectively) of eight individuals with SCI and eight matched AB control subjects. Baseline BA SR patterns and FMD% were similar between groups, while SFA anterograde SR was higher (P < 0.01) and FMD% lower (P = 0.04) in SCI versus AB subjects. Shear rate patterns were then acutely altered through the BA and SFA using a subsystolic cuff-inflation model. Bilateral FMD assessments were conducted before and after 30 min of unilateral inflation of a forearm or thigh blood pressure cuff to 75 mmHg. Cuff inflation resulted in concomitant increases in both anterograde (P < 0.05) and retrograde SR (P < 0.05), as well as acute decreases in FMD% (P < 0.05) in the BA and SFA in both groups. These results highlight that brief manipulation of SR patterns can acutely impair FMD% in conditions of both normal and altered sympathetic innervation and arterial remodelling. This information is crucial when designing strategies to combat impaired vascular function in both healthy and clinical populations.
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 | 0.000 | 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 | 0.000 |
| 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