Plasma glial fibrillary acidic protein as a biomarker of blood-brain barrier integrity in patients with occult cerebral small vessel disease
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Bibliographic record
Abstract
OBJECTIVE: To investigate the association between plasma glial fibrillary acidic protein (GFAP) levels and blood-brain barrier (BBB) integrity in patients with occult cerebral small vessel disease (CSVD). METHODS: This retrospective study included patients with occult CSVD (CSVD group, n = 68) and age-matched individuals without CSVD (control group, n = 61). Demographic and clinical characteristics were compared between groups. Cognitive function was assessed using the Montreal Cognitive Assessment-B (MoCA-B). Plasma GFAP levels were measured, and all participants underwent sequential magnetic resonance imaging (MRI) to evaluate BBB integrity. Patients were stratified based on total MRI burden of CSVD into moderate/severe and none/mild load groups. Risk factors associated with moderate/severe CSVD load were analyzed. RESULTS: The prevalence of hyperlipidemia was significantly higher in the CSVD group than in the control group (P = 0.020), and MoCA-B scores were significantly lower. In the CSVD group, plasma GFAP levels were negatively correlated with total cholesterol (r = -0.281, P = 0.020) and low-density lipoprotein (r = -0.282, P = 0.020), as well as with MoCA-B scores (r = -0.440, P = 0.0002). MRI analysis revealed that brain regions showing significant correlations with elevated plasma GFAP levels exhibited BBB disruption and cortical thinning. CONCLUSION: Elevated plasma GFAP levels are associated with cognitive impairment and BBB disruption in patients with occult CSVD. GFAP may serve as a potential biomarker for evaluating BBB integrity in this population.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| 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 it