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Visualization of Amyloid β Deposits in the Human Brain with Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry
Published on: March 7, 2019
Imaging and fluid biomarkers for prognostic stratification in cerebral amyloid angiopathy
Dandan Wang1,2, Shuxian Lv3, Yuqing Wei3
1Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South 4th Ring Road, Fengtai District, Beijing, 100070, China. wangdandan0126@163.com.
Insights
Cerebral amyloid angiopathy (CAA) prognosis is complex. New imaging and fluid biomarkers help predict hemorrhage and cognitive decline risks, enabling personalized treatment for this small vessel disease.
Area of Science:
- Neurology
- Vascular Dementia Research
- Biomarker Discovery
Background:
- Cerebral amyloid angiopathy (CAA) is a small vessel disease marked by Aβ deposition, causing hemorrhage and cognitive issues.
- Prognosis for CAA patients is highly variable, with risks of recurrent bleeding and worsening cognition.
Purpose of the Study:
- To review recent advancements in imaging and fluid biomarkers for prognostic stratification in CAA.
- To highlight the potential of multi-modal biomarkers for predicting outcomes and guiding precision management.
Main Methods:
- Review of advanced MRI and molecular PET techniques for imaging CAA.
- Analysis of fluid biomarkers including plasma Aβ ratios, MMPs/TIMPs, NfL, and GFAP.
- Discussion of integrating multi-modal indicators for prognostic prediction.
Main Results:
- Imaging markers now include non-hemorrhagic indicators like white matter hyper-intensities (WMHs) and enlarged perivascular spaces (ePVS).
- Fluid biomarkers reflect vascular and neuronal injury, with altered Aβ ratios and elevated NfL/GFAP levels.
- Multi-modal integration shows promise for individualized prediction of hemorrhagic and cognitive outcomes.
Conclusions:
- Advanced imaging and fluid biomarkers offer improved prognostic stratification for CAA.
- Integrating multi-modal data may enable personalized prediction of outcomes and precision management strategies.
- Standardization and validation of multi-modal models are crucial for future clinical application.
Abstract:
Cerebral amyloid angiopathy (CAA) is a common small vessel disease characterized by Aβ deposition in cortical and leptomeningeal arteries, leading to lobar intracerebral hemorrhage and vascular cognitive impairment. Despite advances in diagnosis, prognosis remains highly heterogeneous, encompassing risks of recurrent hemorrhage and progressive cognitive decline. This review summarizes recent developments in imaging and fluid biomarkers for prognostic stratification in CAA. Imaging markers, including advanced MRI and molecular PET techniques, have evolved from traditional hemorrhagic indicators, such as cerebral micro-bleeds (CMBs) and cortical superficial siderosis (cSS), to non-hemorrhagic including white matter hyper-intensities (WMHs), and enlarged perivascular spaces (ePVS), which sensitively capture microstructural damage after using quantitative measures. Fluid biomarkers provide dynamic insights into vascular and neuronal injury, including altered plasma Aβ42/Aβ40 ratios, MMPs/TIMPs balance, and elevated neuro-filament light chain (NfL) and glial fibrillary acidic protein (GFAP) levels. Integrating these multi-modal indicators may enable individualized prediction of hemorrhagic and cognitive outcomes and inform precision management strategies. Future research should standardize quantification methods and validate multi-modal models across diverse CAA phenotypes to advance toward personalized prognostic frameworks.
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