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Equivocal roles of tissue-type plasminogen activator in stroke-induced injury

Karim Benchenane1, José P López-Atalaya, Mónica Fernández-Monreal

  • 1Université de Caen, CNRS UMR 6551, Centre Cyceron, IFR 47, Boulevard H. Becquerel, BP 5229, 14074 CAEN Cedex, France.

Trends in Neurosciences
|March 24, 2004
PubMed

Insights

Tissue-type plasminogen activator (tPA) treats acute stroke by dissolving clots. However, this clot-busting drug may also harm brain cells, making its use controversial despite its benefits.

Area of Science:

  • Neuroscience
  • Cardiovascular Medicine
  • Pharmacology

Background:

  • Stroke is a leading cause of death and disability, particularly in aging populations.
  • Acute ischemic stroke results from blocked cerebral arteries, causing irreversible neuronal damage.
  • Tissue-type plasminogen activator (tPA) is the sole FDA-approved treatment for acute stroke.

Purpose of the Study:

  • To evaluate the efficacy and safety of tPA in treating acute ischemic stroke.
  • To investigate the potential direct neurotoxic effects of tPA.

Main Methods:

  • Review of existing clinical data on tPA use in stroke.
  • Analysis of preclinical studies examining tPA's effects on neuronal and glial cells.

Main Results:

  • tPA is an effective thrombolytic agent for acute stroke.
  • Evidence suggests tPA may exert direct, detrimental effects on neurons and glial cells.
  • The therapeutic window and optimal use of tPA in stroke remain subjects of ongoing research.

Conclusions:

  • While tPA is crucial for dissolving clots in acute stroke, its potential neurotoxicity warrants further investigation.
  • Balancing the thrombolytic benefits of tPA against its potential harm is critical for optimizing stroke treatment.
  • Further research is needed to clarify the risks and benefits of tPA in cerebrovascular diseases.

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