What question did this study set out to answer?

This research aims to understand how plasma GFAP mediates the relationship between amyloid beta pathology and cognitive decline in pre-dementia stages.

March 16, 2026Alzheimer s & Dementia Diagnosis Assessment & Disease MonitoringOpen Access

Plasma glial fibrillary acidic protein as a mediator of amyloid‐associated cognitive decline over 4‐year follow‐up in pre‐dementia stages

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Authors

HWHongchun Wei CZChunhua ZhangShuozhou Central Hospital PWPuyuan WenYuhuangding Hospital

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Implication

Mediation analysis shows plasma GFAP mediates cognitive decline in non-demented adults, suggesting early biomarker potential.

Key Points

This research aims to understand how plasma GFAP mediates the relationship between amyloid beta pathology and cognitive decline in pre-dementia stages.
Conducted a mediation analysis over 4 years in 223 non-demented adults.
Assessed plasma GFAP, phosphorylated tau (p-tau181 and p-tau217), and inflammatory ratios as potential mediators.
Utilized 18F-florbetapir PET scans to measure amyloid beta levels.
Plasma GFAP significantly mediated Aβ-related cognitive decline, accounting for 17.70% to 23.77% of the total effect.
GFAP was linked to hippocampal atrophy specifically in individuals aged ≤ 70 years.
p-tau181 and p-tau217 were correlated with cognitive decline but not as significant mediators.

Cite This Study

Wei et al. (2026) studied this question.

synapsesocial.com/papers/69b79e488166e15b153ab605 https://doi.org/10.1002/dad2.70293

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Plasma glial fibrillary acidic protein as a mediator of amyloid‐associated cognitive decline over 4‐year follow‐up in pre‐dementia stages

Discussion

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Implication

Key Points

Cite This Study

Plasma glial fibrillary acidic protein as a mediator of amyloid‐associated cognitive decline over 4‐year follow‐up in pre‐dementia stages

Discussion

Member takes

Implication

Key Points

Cite This Study

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