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Related Experiment Videos

Persistent BBB disruption may underlie alpha interferon-induced seizures.

Lev Pavlovsky1, Ernst Seiffert, Uwe Heinemann

  • 1Laboratory of Experimental Neurosurgery, Soroka University Hospital and Zlotowski Center of Neuroscience, Ben-Gurion University, Beersheva 84105, Israel.

Journal of Neurology
|January 27, 2005
PubMed
Summary
This summary is machine-generated.

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Interferon-alpha (IFN-alpha) therapy can cause seizures by disrupting the blood-brain barrier. This study reveals IFN-alpha induces a delayed epileptic cortex, explaining treatment latency and highlighting risks in patients with blood-brain barrier disruption.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Immunology

Background:

  • Generalized seizures occur in 1-4% of patients receiving Interferon-alpha (IFN-alpha) therapy.
  • The underlying mechanisms of IFN-alpha-induced seizures remain largely unknown.
  • Investigating the link between IFN-alpha, blood-brain barrier (BBB) integrity, and epileptogenesis is crucial.

Observation:

  • A patient on IFN-alpha therapy developed partial and generalized seizures alongside focal BBB disruption and pathological electroencephalography (EEG).
  • Acute in-vitro or in-vivo exposure of rat somatosensory cortices to IFN-alpha did not immediately induce epileptic activity.
  • However, rat cortical slices exposed to IFN-alpha in-vivo one week prior demonstrated significant epileptiform activity (>80%).

Findings:

Related Experiment Videos

  • IFN-alpha exposure in-vivo induces a delayed but pronounced epileptiform activity in cortical slices.
  • This suggests IFN-alpha can lead to the generation of an epileptic cortex.
  • A latency period exists between IFN-alpha treatment initiation and seizure onset in patients.

    • Implications:

    • The findings propose a mechanism for IFN-alpha-induced seizures involving a delayed development of an epileptic cortex.
    • This explains the weeks-long latency observed in patients treated with IFN-alpha.
    • Identifying BBB disruption in high-risk patients receiving peripherally acting drugs like IFN-alpha is critical for seizure prevention.