S100B and NSE serum concentrations after simulated diving in rats

Area of Science:

• Biomedical research
• Diving physiology
• Biomarker analysis

Background:

• Decompression stress can cause physiological changes.
• S100B and NSE are potential biomarkers for neurological injury.
• Assessing these biomarkers in diving contexts is crucial.

Purpose of the Study:

• To determine if S100B and NSE serum levels change after simulated air dives.
• To test the hypothesis that severe decompression stress increases these biomarkers.
• To correlate biomarker levels with venous gas emboli (VGE).

Main Methods:

• Rats underwent a simulated air dive (700 kPa, 45 min).
• Pulmonary artery monitored for vascular gas bubbles via ultrasound.
• Serum S100B and NSE levels measured pre- and post-dive using ELISA kits.

Main Results:

• No significant increase in serum S100B or NSE was detected post-dive.
• Few animals exhibited high bubble grades, indicating mild decompression stress.
• Serum biomarker concentrations remained consistent before and after the dive exposure.

Conclusions:

• The simulated dive did not induce detectable changes in S100B and NSE serum levels.
• The absence of significant VGE may explain the lack of biomarker elevation.
• Further research is needed to explore biomarker responses under more severe decompression conditions.