Cited by 149Barrier Structure and Function StudiesDrug Transport and Resistance MechanismsAlzheimer's disease research and treatments

ApoE deficiency leads to a progressive age-dependent blood-brain barrier leakage

Hafezi-Moghadam, Ali, Thomas, Kennard L., Wagner, Denisa D.·2007·American Journal of Physiology-Cell Physiology

Abstract

Previously, we reported a defect in the blood-brain barrier (BBB) of apolipoprotein E-deficient (apoE-/-) mice (24). Here, we investigate BBB permeability in wild-type (WT) and apoE-/- mice as a function of age. Both WT and apoE-/- mice showed significantly increased cortical BBB leakage with age. However, in apoE-/- mice, the leakage increased at a 3.7 x higher rate compared with WT mice. Surprisingly, the cerebellum showed significantly more leakage than other brain regions across age, while there was no difference between the two hemispheres. To determine the contribution of tissue- vs. blood-borne apoE to vascular permeability, we generated chimeric mice by bone marrow transplantation and measured their BBB leakage. These experiments suggest that both blood- and tissue-derived apoE are equally important for BBB function. In sum, we find an age-dependent defect in the BBB that is exacerbated in apoE-/- mice. Since vascular defects are found in patients with age-related neurodegenerative diseases, such as Alzheimer's, age-related BBB leakage could underlie these defects and may thus be an important contributor to the cumulative neuronal damage of these diseases.

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Crossref · 10.1152/ajpcell.00563.2005

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  • Transgenic mice lacking Apoe develop an early BBB breakdown.

    “Transgenic mice lacking Apoe also develop an early BBB breakdown (60, 99, 147, 187, 226, 233, 406, 426, 437, 554), indicating that APOE is essential for maintaining BBB integrity.”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [226]

  • ApoE deficiency in mice has been shown to be associated with BBB dysfunction where both blood- and tissue-derived ApoE were found to be equally important for BBB function and thus relevant to age-related neurodegenerative diseases, like AD.

    “ApoE deficiency in mice has also shown to be associated with BBB dysfunction where both the blood- and tissue-derived ApoE were found to be equally important for BBB function and thus relevant to age-related neurodegenerative diseases, like AD [52].”

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Authors
Hafezi-Moghadam, A., Thomas, K. L., & Wagner, D. D.
Venue
American Journal of Physiology-Cell Physiology
Published
2007-04
Volume
292
Issue
4
Pages
C1256-C1262
ISSN
  • 0363-6143 (ISSN-L)
  • 1522-1563
OpenAlex
W2134115481
Cited by
149
References
48
Citations by year
2026: 2 · 2025: 6 · 2024: 9 · 2023: 3 · 2022: 4 · 2021: 10 · 2020: 12 · 2019: 11 · 2018: 6 · 2017: 16 · 2016: 12 · 2015: 11 · 2014: 8 · 2013: 8 · 2012: 6
FWCI
2.63
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Cell Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R01HL053756, HL53756)
  • National Eye Institute (EY-14104, P30EY014104)
  • National Institute of Allergy and Infectious Diseases (K08 AI-50775, K08AI050775)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
apolipoprotein E, blood-brain barrier permeability, BBB leakage, aging, ApoE-deficient mice, cerebellum, chimeric mice, bone marrow transplantation, age-related neurodegenerative diseases, Alzheimer's disease
MeSH terms
Aging, Animals, Apolipoproteins E, Blood-Brain Barrier, Brain, Capillary Permeability, Cerebellum, Evans Blue, Mice, Inbred C57BL, Bone Marrow Transplantation, Mice, Knockout, Mice

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