Related Experiment Videos
Time Course of Endothelial Dysfunction Induced by Decompression Bubbles in Rats.
Kun Zhang1, Mengmeng Wang1, Haowen Wang1
1Department of Diving and Hyperbaric Medicine, Faculty of Naval Medicine, Second Military Medical University Shanghai, China.
Frontiers in Physiology
|April 8, 2017
Summary
Decompression stress causes endothelial injury, linked to bubble formation. This study shows bubble amounts predict endothelial dysfunction, with biomarkers indicating decompression severity.
Area of Science:
- Physiology
- Biomarkers
- Decompression Science
Background:
- Decompression stress can induce endothelial injury, systemic inflammation, and prothrombotic states.
- Previous research linked endothelial injury after decompression to bubble formation.
Purpose of the Study:
- To investigate the time course of endothelial injury following decompression.
- To determine the relationship between endothelial injury markers and bubble formation.
Main Methods:
- Rats underwent simulated air dives (7 ATA for 90 min) followed by rapid decompression.
- Bubbles were detected ultrasonically; serum markers (malondialdehyde, endothelin-1, intercellular cell adhesion molecule-1) were measured at various time points post-decompression.
Main Results:
- Malondialdehyde peaked at 12 hours, returning to baseline by 72 hours.
- Endothelin-1 and intercellular cell adhesion molecule-1 peaked at 24 hours and remained elevated for over 72 hours.
- Biomarker levels correlated positively with bubble counts.
Conclusions:
- Bubble formation is a causative agent of decompression-induced endothelial damage.
- Bubble counts serve as a reliable predictor of endothelial dysfunction.
- Endothelial biomarker levels can assess bubble load and decompression stress.