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Related Experiment Videos

Endothelial cell swelling and brain perfusion

O Kempski1, S Behmanesh

  • 1Institute for Neurosurgical Pathophysiology, Johannes Gutenberg-University, Mainz, Germany.

The Journal of Trauma
|May 1, 1997
PubMed
Summary

Acidosis causes endothelial swelling, potentially worsening no-reflow during brain reperfusion. Therapies targeting acidosis-induced swelling are needed to protect brain tissue.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Glial swelling's role in ischemia is known, but endothelial cell volume control during reperfusion is understudied.
  • Extracellular acidosis is a key factor in secondary brain damage.

Purpose of the Study:

  • To investigate the impact of extracellular acidosis on endothelial cell volume.
  • To explore potential therapeutic interventions for acidosis-induced endothelial swelling.

Main Methods:

  • Studied GM7373 endothelial cells at pH 6.0.
  • Utilized bicarbonate-buffered and hydroxyethyl piperin ethanesulfonic acid-buffered media.
  • Tested inhibitors: ethyl isopropyl amiloride and 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid.

Main Results:

  • Significant endothelial swelling (111.1%) occurred in bicarbonate media at pH 6.0.
  • Less swelling (107.9%) observed in hydroxyethyl piperin ethanesulfonic acid-buffered media.
  • 4,4'-Diisothiocyanatostilbene-2,2'-disulfonic acid partially reduced swelling; ethyl isopropyl amiloride prevented it.

Conclusions:

  • Acidosis-induced endothelial swelling is likely in ischemic tissue, potentially causing no-reflow.
  • Therapeutic strategies targeting transport systems or using osmotic agents are recommended to prevent or reduce swelling.

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