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Updated: May 2, 2026
Optimized System for Cerebral Perfusion Monitoring in the Rat Stroke Model of Intraluminal Middle Cerebral Artery Occlusion
Published on: February 17, 2013
A timeline study on vascular co-morbidity induced cerebral endothelial dysfunction assessed by perfusion MRI
Bram Callewaert1, Willy Gsell2, Marleen Lox3
1Center for Molecular and Vascular Biology (CMVB), Department of Cardiovascular Sciences, KU Leuven, 3000 Leuven, Belgium; Biomedical MRI unit, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium.
Endothelial dysfunction, a precursor to neurodegeneration, can be detected early using perfusion MRI. This study shows increased cerebral blood flow and Blood Brain Barrier permeability in rats, mirroring early Alzheimer's disease findings.
Area of Science:
- Neuroscience
- Vascular Biology
- Medical Imaging
Background:
- Endothelial dysfunction is a critical early factor in neurodegenerative diseases.
- Cerebral endothelial cell dysfunction disrupts brain perfusion and the Blood Brain Barrier (BBB), causing cognitive decline.
- Modifiable risk factors worsen endothelial dysfunction, highlighting the need for early detection methods.
Purpose of the Study:
- To evaluate various perfusion Magnetic Resonance Imaging (MRI) techniques for non-invasively detecting early pathological changes due to endothelial dysfunction.
- To compare MRI findings with invasive immunohistochemistry in a rat model.
Main Methods:
- Utilized perfusion MRI methodologies to assess cerebral blood flow (CBF) and BBB permeability.
- Employed a rat model (ZSF1 Obese rats) with multiple cardiovascular comorbidities.
- Validated MRI findings with invasive immunohistochemistry at different disease stages.
Main Results:
- Early-stage ZSF1 Obese rats exhibited cerebral hyperperfusion (increased CBF) and elevated BBB permeability.
- Arterial Spin Labeling (ASL) revealed increased CBF in early disease stages, which diminished later.
- Observed changes correlate with clinical findings in early Alzheimer's disease (AD) showing increased CBF.
Conclusions:
- Perfusion MRI, particularly ASL, can non-invasively detect early signs of endothelial dysfunction and associated cerebrovascular pathology.
- The findings in the ZSF1 Obese rat model provide a valuable preclinical correlate for early AD.
- Early detection of endothelial dysfunction via advanced imaging may enable timely therapeutic interventions for neurodegenerative disorders.
