The case for blood–brain barrier dysfunction in the pathogenesis of Alzheimer's disease
Identifieur interne : 001745 ( Main/Exploration ); précédent : 001744; suivant : 001746The case for blood–brain barrier dysfunction in the pathogenesis of Alzheimer's disease
Auteurs : Brian Jeynes [Canada] ; John Provias [Canada]Source :
- [ 0360-4012 ]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that leads to a progressive loss of integrative and memory capacities of the brain. This is the predominant form of neurodegenerative dementia, with a growing prevalence of between 1 in 50 and 1 in 100 in North America. Numerous hypotheses related to the etiology of AD have developed over the years. However, among the various published hypotheses, the predominant one is related to the progressive and prominent accumulation of central nervous system β‐amyloid peptide and the ensuing brain burden created. It is, therefore, important to consider the homeostatic mechanisms underlying β‐amyloid transport dynamics between the brain and blood vascular compartments. As well, there is a dynamic interrelationship between soluble and insoluble forms of the peptide. Factors that underlie and regulate these dynamic processes are likely relevant to the end accumulation of β‐amyloid peptide in the brain compartment and ultimately in insoluble forms, which is characteristic of, and significant for, the pathophysiology of the Alzheimer's brain. Significantly, and in particular relation to the amyloid burden theory mentioned above, it has been postulated that a dysfunctioning blood–brain barrier (BBB) may play a significant, if not critical, role in the pathogenesis of AD. By allowing the influx of injurious materials or agents into the brain or by impeding or blocking the efflux of those materials and/or agents, BBB‐related neuronopathies and their associated sequelae could, and do, ensue. © 2010 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/jnr.22527
Affiliations:
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This is the predominant form of neurodegenerative dementia, with a growing prevalence of between 1 in 50 and 1 in 100 in North America. Numerous hypotheses related to the etiology of AD have developed over the years. However, among the various published hypotheses, the predominant one is related to the progressive and prominent accumulation of central nervous system β‐amyloid peptide and the ensuing brain burden created. It is, therefore, important to consider the homeostatic mechanisms underlying β‐amyloid transport dynamics between the brain and blood vascular compartments. As well, there is a dynamic interrelationship between soluble and insoluble forms of the peptide. Factors that underlie and regulate these dynamic processes are likely relevant to the end accumulation of β‐amyloid peptide in the brain compartment and ultimately in insoluble forms, which is characteristic of, and significant for, the pathophysiology of the Alzheimer's brain. Significantly, and in particular relation to the amyloid burden theory mentioned above, it has been postulated that a dysfunctioning blood–brain barrier (BBB) may play a significant, if not critical, role in the pathogenesis of AD. By allowing the influx of injurious materials or agents into the brain or by impeding or blocking the efflux of those materials and/or agents, BBB‐related neuronopathies and their associated sequelae could, and do, ensue. © 2010 Wiley‐Liss, Inc.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Ontario</li></region><settlement><li>Hamilton (Ontario)</li></settlement><orgName><li>Université McMaster</li></orgName></list><tree><country name="Canada"><noRegion><name sortKey="Jeynes, Brian" sort="Jeynes, Brian" uniqKey="Jeynes B" first="Brian" last="Jeynes">Brian Jeynes</name></noRegion><name sortKey="Jeynes, Brian" sort="Jeynes, Brian" uniqKey="Jeynes B" first="Brian" last="Jeynes">Brian Jeynes</name><name sortKey="Provias, John" sort="Provias, John" uniqKey="Provias J" first="John" last="Provias">John Provias</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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