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Laser-induced shock wave endothelial cell injury
A Sondén1, B Svensson, N Roman
1Department of Anesthesiology and Intensive Care, Huddinge University Hospital, S-141 86 Huddinge, Sweden.
Lasers in Surgery and Medicine
|May 11, 2000
Summary
A novel flyer-plate model simulates shock wave effects on endothelial cells (ECs) in vitro. This method allows reproducible study of cell injury caused by procedures like extracorporeal shock wave lithotripsy (ESWL) and laser treatments.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Shock Wave Research
Background:
- Pressure transients from medical procedures and trauma can cause tissue injury.
- The pathophysiology of shock wave-induced tissue damage remains poorly understood.
- Existing research lacks in vitro models to study these effects on cellular levels.
Purpose of the Study:
- Introduce a novel in vitro model to investigate shock wave effects.
- Study the impact of shock waves on endothelial cell (EC) monolayers.
- Establish a reproducible system for shock wave research.
Main Methods:
- Utilized a Nd:YAG laser-driven flyer-plate technique to generate shock waves.
- Characterized shock wave properties using pressure transducers and high-speed imaging.
- Assessed biological effects on ECs via microscopy, morphometry, immunocytochemistry, and ELISA.
Main Results:
- Generated highly reproducible shock waves with quantifiable and variable cavitation.
- Observed cell membrane damage and detachment in exposed EC cultures.
- Found elevated lactate dehydrogenase (LDH) release and larger EC lesions with increased cavitation.
Conclusions:
- The flyer-plate model provides a defined and reproducible method for shock wave application.
- This model effectively induces immediate cell injury in EC monolayers.
- Enables further cellular and subcellular investigation of shock wave-induced lesions.