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Fibroblast response to rapid decompression and hyperbaric oxygenation
1University of Texas at Austin, College of Pharmacy, Austin 78712-1074, USA.
Aviation, Space, and Environmental Medicine
|June 18, 1999
Summary
Hyperbaric oxygenation (HBO) and rapid decompression (RD) stimulate fibroblast proliferation. HBO enhances DNA replication, while RD boosts protein synthesis, impacting cellular responses in diving and hyperbaric medicine.
Area of Science:
- Cell Biology
- Physiology
Background:
- The cellular mechanisms underlying symptoms from rapid decompression (RD) and hyperbaric oxygenation treatment (HBO) remain unclear.
- Understanding these cellular changes is crucial for managing conditions related to pressure variations.
Purpose of the Study:
- To investigate the cellular effects of RD and HBO on human fibroblasts.
- To determine the impact of these treatments on DNA synthesis, protein production, and cell proliferation.
Main Methods:
- Human fibroblasts were subjected to RD or HBO.
- Cellular responses were assessed using bromodeoxyuridine (BrDU) incorporation for DNA synthesis, sulforhodamine B assay for total protein, and image analysis for cell density and proliferation.
Main Results:
- RD significantly increased total protein compared to controls (p < 0.05).
- HBO increased the fraction of cells synthesizing DNA, while RD decreased it (p < 0.05).
- Both treatments promoted fibroblast proliferation, with cell density increasing by day 3, particularly after RD.
Conclusions:
- Both HBO and RD enhance fibroblast proliferation within 24 hours post-treatment.
- HBO stimulates DNA replication, whereas RD enhances protein synthesis, indicating distinct cellular impacts.