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Liver hilus dearterialization. A histological and electron microscopical study in the dog
Annales Chirurgiae Et Gynaecologiae
|January 1, 1979
Summary
Liver dearterialization caused reversible ischemic changes, including sinusoidal dilation and hepatocyte shrinkage, observed through light and electron microscopy. These findings correlate with transient hypoxia and liver damage.
Area of Science:
- Hepatology
- Ischemic Liver Injury
- Microscopy
Background:
- Liver hilus dearterialization is a procedure that can lead to ischemia.
- Understanding the microscopic effects of liver ischemia is crucial for patient outcomes.
Purpose of the Study:
- To investigate the histological and electron microscopical changes in canine livers following dearterialization.
- To assess the reversibility of ischemic liver damage.
Main Methods:
- Light and electron microscopy were used to examine liver tissue from dogs undergoing dearterialization or sham operation.
- In vivo specimens were collected at various time points post-procedure.
Main Results:
- Light microscopy revealed sinusoidal dilatation and hepatocyte shrinkage, most pronounced at 24 hours and persisting centrally by day 7.
- Electron microscopy showed mitochondrial swelling and endoplasmic reticulum damage, with bile canaliculi membrane damage also noted.
- Sham-operated controls did not exhibit these ischemic changes.
Conclusions:
- Liver dearterialization induces reversible ischemic changes at both the light and electron microscopic levels.
- Findings correlate with transient liver hypoxia and biochemical evidence of reversible liver damage.