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Molecular Medicine

, Volume 9, Issue 3–4, pp 112–122 | Cite as

Cortical and Leptomeningeal Cerebrovascular Amyloid and White Matter Pathology in Alzheimer’s Disease

  • Alex E Roher
  • Yu-Min Kuo
  • Chera Esh
  • Carmen Knebel
  • Nicole Weiss
  • Walter Kalback
  • Dean C Luehrs
  • Jennifer L Childress
  • Thomas G Beach
  • Roy O. Weller
  • Tyler A Kokjohn
Articles
  • 1 Downloads

Abstract

Alzheimer’s disease (AD) is characterized by neurofibrillary tangles and by the accumulation of β-amyloid (Aβ) peptides in senile plaques and in the walls of cortical and leptomeningeal arteries as cerebral amyloid angiopathy (CAA). There also is a significant increase of interstitial fluid (ISF) in cerebral white matter (WM), the pathological basis of which is largely unknown. We hypothesized that the accumulation of ISF in dilated periarterial spaces of the WM in AD correlates with the severity of CAA, with the total Aβ load in the cortex and with Apo E genotype. A total of 24 AD brains and 17 nondemented age-matched control brains were examined. CAA was seen in vessels isolated from brain by using EDTA-SDS lysis stained by Thioflavin-S. Total Aβ in gray matter and WM was quantified by immunoassay, ApoE genotyping by PCR, and dilatation of perivascular spaces in the WM was assessed by quantitative histology. The study showed that the frequency and severity of dilatation of perivascular spaces in the WM in AD were significantly greater than in controls (P < 0.001) and correlated with Aβ load in the cortex, with the severity of CAA, and with ApoE ε4 genotype. The results of this study suggest that dilation of perivascular spaces and failure of drainage of ISF from the WM in AD may be associated with the deposition of Aβ in the perivascular fluid drainage pathways of cortical and leptomeningeal arteries. This failure of fluid drainage has implications for therapeutic strategies to treat Alzheimer’s disease.

Notes

Acknowledgments

This study was supported by National Institutes of Health grants AG 17490, AG 18345, and NF 38674 and by the State of Arizona Alzheimer’s Research Center.

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Copyright information

© Feinstein Institute for Medical Research 2003

Authors and Affiliations

  • Alex E Roher
    • 1
  • Yu-Min Kuo
    • 2
  • Chera Esh
    • 1
  • Carmen Knebel
    • 1
  • Nicole Weiss
    • 1
  • Walter Kalback
    • 1
  • Dean C Luehrs
    • 1
  • Jennifer L Childress
    • 1
  • Thomas G Beach
    • 3
  • Roy O. Weller
    • 4
  • Tyler A Kokjohn
    • 5
  1. 1.The Longtine Center for Molecular Biology and GeneticsSun Health Research InstituteSun CityUSA
  2. 2.Department of Cell Biology and AnatomyNational Cheng Kung UniversityTainanTaiwan
  3. 3.The Harold Civin Laboratory of NeuropathologySun Health Research InstituteSun CityUSA
  4. 4.Department of Pathology (Neuropathology)University of Southampton School of Medicine, Southampton General HospitalSouthamptonUK
  5. 5.Department of MicrobiologyMidwestern UniversityGlendaleUSA

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