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Related Concept Videos

Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
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Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...

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Related Experiment Video

Updated: Jun 29, 2026

Mouse Models of Periventricular Leukomalacia
06:24

Mouse Models of Periventricular Leukomalacia

Published on: May 18, 2010

Progress in periventricular leukomalacia.

Wenbin Deng1, Jeanette Pleasure, David Pleasure

  • 1Department of Neurology, UC Davis School of Medicine, 2425 Stockton Blvd, Sacramento, CA 95817, USA.

Archives of Neurology
|October 15, 2008
PubMed
Summary
This summary is machine-generated.

Periventricular leukomalacia (PVL) is a major brain injury in premature infants, leading to cerebral palsy. Research suggests targeting toxic molecules may reduce PVL severity in animal models.

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Area of Science:

  • Neuroscience
  • Neonatal Medicine
  • Developmental Pediatrics

Background:

  • Periventricular leukomalacia (PVL) is the primary brain injury in premature infants.
  • PVL is the leading cause of cerebral palsy and cognitive deficits in survivors.
  • The incidence of PVL-related neurological deficits in surviving low-birth-weight infants is rising.

Purpose of the Study:

  • To review the neuropathology of PVL.
  • To discuss advanced neuroimaging techniques for PVL diagnosis.
  • To explore potential therapeutic targets for PVL.

Main Methods:

  • Review of neuropathologic hallmarks of PVL.
  • Comparison of diagnostic sensitivity between MRI and ultrasonography.
  • Analysis of animal models for therapeutic strategies.

Main Results:

  • PVL involves microglial activation and loss of premyelinating oligodendroglia.
  • MRI offers higher sensitivity for PVL detection than ultrasonography.
  • Premyelinating oligodendroglia are susceptible to excitotoxicity, oxidative stress, and inflammation.
  • Animal studies indicate pharmacologic interventions targeting toxic molecules may mitigate PVL.

Conclusions:

  • PVL is a significant concern in premature infant neurology.
  • Advanced neuroimaging improves PVL detection and characterization.
  • Understanding PVL pathophysiology points to potential therapeutic avenues targeting specific molecular pathways.