Serum CD14 levels in polytraumatized and severely burned patients

Area of Science:

• Immunology
• Biochemistry
• Trauma Medicine

Background:

• CD14 molecule acts as a receptor for lipopolysaccharide (LPS) on monocytes and macrophages.
• CD14 mediates LPS-induced tumor necrosis factor (TNF) production.
• Soluble CD14 (sCD14) is identified as a molecule present in serum.

Purpose of the Study:

• To investigate the presence and levels of soluble CD14 (sCD14) in serum.
• To analyze sCD14 levels in healthy volunteers and polytraumatized patients.
• To explore the correlation between sCD14 levels and trauma severity, inflammation, and sepsis.

Main Methods:

• Enzyme-linked immunosorbent assay (ELISA) was used to quantify sCD14 levels.
• Serum samples from healthy volunteers and polytraumatized patients were analyzed.
• Comparison of sCD14 levels with injury severity scores and other clinical parameters.

Main Results:

• Healthy volunteers had a mean sCD14 level of 3.7 +/- 0.05 micrograms/ml.
• Polytraumatized patients showed decreased sCD14 levels immediately post-trauma (1.7 +/- 0.3 micrograms/ml).
• sCD14 levels increased in polytraumatized patients within 6 days, remaining elevated in severe injuries (ISS > 45).
• Decreased high-density lipoprotein levels were observed post-trauma.
• No correlation was found between sCD14 and parameters of inflammation or liver function.
• Burn trauma patients with sepsis signs showed increased sCD14 levels.

Conclusions:

• Soluble CD14 (sCD14) levels dynamically change following polytrauma.
• sCD14 levels may serve as an indicator of trauma severity.
• Elevated sCD14 levels in burn patients with sepsis suggest a potential role in monitoring infection.