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Longitudinal In Vivo Imaging of the Cerebrovasculature: Relevance to CNS Diseases
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Histopathological stainings and definitions of vascular disruptions in the elderly brain

Jacques L De Reuck1

  • 1Equippe d'Accueil 1046, Université Lille Nord de France, France. dereuck.j@gmail.com

Experimental Gerontology
|April 10, 2012
PubMed

Insights

Post-mortem brain analysis reveals small cerebral bleeds are significant in Alzheimer dementia (AD) pathogenesis, distinct from other neurodegenerative dementias. Quantifying bleeding load is crucial for understanding these conditions.

Area of Science:

  • Neuropathology
  • Neurodegenerative Diseases
  • Cerebrovascular Research

Background:

  • Post-mortem neuropathological examination is vital for diagnosing neurodegenerative dementia and for research.
  • Cerebrovascular lesions, particularly small cerebral bleeds, are increasingly implicated in Alzheimer dementia (AD) pathogenesis.
  • Understanding the 'bleeding load' is a key area of interest in dementia research.

Purpose of the Study:

  • To investigate the role and quantification of small cerebral bleeds in neurodegenerative dementias.
  • To differentiate the causes and prevalence of bleeding load in Alzheimer dementia versus other neurodegenerative dementias.

Main Methods:

  • Utilized post-mortem brain examination.
  • Employed standard quantification techniques to determine the bleeding load.
  • Examined neuropathological features related to cerebrovascular lesions.

Main Results:

  • Amyloid angiopathy is identified as a cause of small bleeds in AD, but not the sole cause.
  • Other neurodegenerative dementias show a low bleeding load.
  • In non-AD dementias, the low bleeding load is primarily linked to blood-brain barrier disturbances.

Conclusions:

  • Small cerebral bleeds are a significant neuropathological finding in Alzheimer dementia.
  • The etiology of small bleeds in AD is multifactorial, involving more than just amyloid angiopathy.
  • Bleeding load in other neurodegenerative dementias is minimal and associated with blood-brain barrier integrity.

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