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Partial Lobular Hepatectomy: A Surgical Model for Morphologic Liver Regeneration
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Alterations in hepatic lobar function in regenerating rat liver.

András Fülöp1, András Budai1, Zoltán Czigány1

  • 11st Department of Surgery, Semmelweis University, Budapest, Hungary.

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|May 13, 2015
PubMed
Summary

Portal vein ligation temporarily impairs liver function, but recovery occurs by day five, driven by increased function in nonligated liver lobes. This study clarifies liver function changes after portal vein ligation.

Keywords:
Bile flowIndocyanine greenLiver functionLiver regenerationPortal vein ligation

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Area of Science:

  • Hepatology
  • Surgical Research
  • Physiology

Background:

  • Portal vein ligation causes liver lobe hypertrophy by redirecting blood flow.
  • The impact of portal vein ligation on liver function remains debated.
  • Understanding regional liver function post-ligation is crucial.

Purpose of the Study:

  • To investigate the time-dependent changes in regional liver function after portal vein ligation.
  • To assess liver morphology and function using various laboratory and imaging techniques.
  • To clarify the compensatory mechanisms in nonligated liver lobes.

Main Methods:

  • Wistar rats underwent 80% portal vein ligation.
  • Liver morphology and function were assessed pre- and post-operation (days 1-7).
  • Key functional tests included serum biochemistry, bile flow, and indocyanine green clearance.

Main Results:

  • Total liver function, assessed by indocyanine green excretion, showed temporary impairment peaking on day two and normalizing by day five.
  • Ligated lobes exhibited reduced bile production and indocyanine green excretion.
  • Nonligated lobes demonstrated enhanced secretory function exceeding their volume increase.

Conclusions:

  • Portal vein ligation causes transient overall liver dysfunction with significant recovery.
  • The recovery is primarily attributed to the compensatory hyperfunction of nonligated liver lobes.
  • Functional gains in nonligated lobes surpass simple volumetric changes.