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Related Experiment Videos

Basilar artery occlusion in rats.

J C Wojak1, V DeCrescito, W Young

  • 1Department of Neurosurgery, New York University School of Medicine, New York.

Stroke
|February 1, 1991
PubMed
Summary
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Basilar artery occlusion in rats did not cause widespread brain infarcts due to collateral flow. Evoked potentials are sensitive indicators of basilar artery occlusion, independent of infarct development.

Area of Science:

  • Neuroscience
  • Cerebrovascular Research
  • Surgical Research

Background:

  • The basilar artery is a critical component of the circle of Willis, supplying blood to the brain.
  • Understanding the consequences of basilar artery occlusion is vital for cerebrovascular disease research.

Purpose of the Study:

  • To investigate the effects of basilar artery occlusion on brain tissue and neurological function in a rat model.
  • To determine the role of collateral circulation in mitigating ischemic damage.
  • To assess the sensitivity of cortical somatosensory evoked potentials to basilar artery occlusion.

Main Methods:

  • Surgical occlusion of the basilar artery at single and double points in 25 rats.
  • Histological examination for brain infarcts at 12-24 hours post-occlusion.

Related Experiment Videos

  • Monitoring of basilar artery reflow and cortical somatosensory evoked potentials (SSEPs).

    • Main Results:

    • Single and double basilar artery occlusions did not result in widespread brain infarcts.
    • Infarcts, when present, were localized between occlusion sites.
    • The basilar artery demonstrated rapid refilling via retrograde collateral flow.
    • Cortical SSEPs were significantly suppressed by occlusions but recovered, irrespective of infarct development.

    Conclusions:

    • The basilar artery possesses robust retrograde collateral blood flow, protecting against extensive ischemic injury.
    • Cortical somatosensory evoked potentials are highly sensitive to basilar artery occlusion events.
    • SSEP changes are not directly correlated with the presence or absence of brain stem infarcts following occlusion.