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Related Experiment Videos

Liver endothelial cell function is depressed only during hypodynamic sepsis

P Wang1, Z F Ba, I H Chaudry

  • 1Center for Surgical Research, Brown University School of Medicine, Providence, Rhode Island, USA.

The Journal of Surgical Research
|February 15, 1997
PubMed
Summary

Sepsis impairs liver endothelial cell function, specifically during the late hypodynamic stage. This dysfunction is indicated by increased hyaluronic acid (HA) levels and reduced HA clearance in rats.

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Area of Science:

  • Hepatology
  • Sepsis Pathophysiology
  • Endothelial Cell Biology

Background:

  • Hepatocellular function is known to be impaired early in sepsis.
  • The impact of sepsis on liver endothelial cell function remains largely unexplored.

Purpose of the Study:

  • To investigate whether liver endothelial cell function is compromised during sepsis.
  • To determine the timing of liver endothelial cell dysfunction in a rat model of polymicrobial sepsis.

Main Methods:

  • Polymicrobial sepsis was induced in male rats via cecal ligation and puncture (CLP).
  • Plasma hyaluronic acid (HA) levels were measured at various time points post-CLP.
  • HA clearance was assessed by intravenous injection and subsequent plasma HA measurements.

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Main Results:

  • Plasma HA levels did not significantly increase until 10 hours after CLP.
  • HA clearance was only reduced at 20 hours post-CLP, indicating delayed dysfunction.
  • Increased HA levels at 10 hours were attributed to enhanced polysaccharide release/production.

Conclusions:

  • Liver endothelial cell dysfunction, characterized by elevated HA and reduced clearance, occurs during the late, hypodynamic phase of sepsis.
  • This study demonstrates a specific functional impairment of liver endothelial cells in sepsis progression.