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Cerebral microbleeds: Beyond the macroscope

Maud Pétrault1, Barbara Casolla2, Thavarak Ouk1

  • 11 Department of Medical Pharmacology, Univ Lille, Inserm U1171-Degenerative and Vascular Cognitive Disorders, CHU Lille, Lille, France.

International Journal of Stroke : Official Journal of the International Stroke Society
|February 13, 2019
PubMed

Insights

Brain microbleeds, small hemosiderin deposits, are key biomarkers for cerebrovascular disease severity. Further research is needed to understand their cellular mechanisms and impact on brain tissue.

Area of Science:

  • Neurology
  • Neuroimaging
  • Pathophysiology

Background:

  • Brain microbleeds are increasingly recognized in clinical practice.
  • These lesions, appearing as small dot-like areas, are associated with cerebrovascular and neurodegenerative diseases.
  • Microbleeds are considered important biomarkers of underlying cerebrovascular disease severity.

Purpose of the Study:

  • To bridge the gap between neuroimaging definitions and pathophysiological understanding of brain microbleeds.
  • To explore the natural history and cellular interactions of microbleeds.
  • To determine if microbleeds represent a miniature form of intracerebral hemorrhage or a distinct type of injury.

Main Methods:

  • Review of clinical and experimental literature.
  • Analysis of neuroimaging findings.
  • Examination of histopathological and experimental data.

Main Results:

  • A discrepancy exists between the definition of microbleeds from neuroimaging and current pathophysiological hypotheses.
  • The natural history and cellular interactions of microbleeds remain largely unknown.
  • Microbleeds may influence therapeutic decisions in neurological patients.

Conclusions:

  • A collaborative effort between clinicians and basic scientists is essential.
  • Further research is needed to elucidate the cellular and molecular mechanisms of microbleeds.
  • Understanding microbleeds requires moving beyond a "macro" view to detailed cellular and molecular insights.
Keywords:
Cerebral microbleedcerebral amyloid angiopathyexperimental modelsintracerebral hemorrhage

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