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Hepatic microvascular changes in rat abdominal compartment syndrome
Sami A Chadi1, Hussein Abdo2, Aurelia Bihari3
1Digestive Disease Institute, Cleveland Clinic Florida, Weston, Florida.
The Journal of Surgical Research
|May 19, 2015
Summary
This study developed an animal model for abdominal compartment syndrome (ACS), revealing early liver injury, inflammation, and organ dysfunction. The model confirms ACS significantly impacts tissue perfusion and increases mortality markers.
Area of Science:
- Physiology
- Pathology
- Animal Models
Background:
- Abdominal compartment syndrome (ACS) is a critical condition linked to multi-organ dysfunction and mortality.
- Understanding ACS mechanisms at a microscopic level requires a suitable animal model.
Purpose of the Study:
- To develop and validate a rat model for studying tissue and microvascular injury in ACS.
- To investigate the microscopic pathological changes associated with ACS.
Main Methods:
- ACS was induced in rats using CO₂ insufflation and an abdominal cast.
- Liver sinusoidal perfusion, inflammatory markers (myeloperoxidase), and cell death were quantified.
- Renal and respiratory function were assessed biochemically and morphologically.
Main Results:
- ACS significantly reduced liver sinusoidal perfusion and increased hepatocellular death.
- Elevated leukocyte activation and myeloperoxidase levels indicated systemic inflammation.
- Rats with ACS exhibited impaired respiratory and renal function, evidenced by altered blood gas and urea nitrogen levels.
Conclusions:
- A reliable rat model for abdominal compartment syndrome was successfully established.
- The model demonstrated early inflammatory changes, perfusion deficits, and increased cell death in the liver.
- The model confirmed significant renal and respiratory dysfunction in ACS.
