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Postoperative immunological function and jaundice

M C Regan1, R M Keane, D Little

  • 1Department of Surgery, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin.

The British Journal of Surgery
|February 1, 1994
PubMed
Summary
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Operative trauma depresses systemic immunity, as measured by delayed-type hypersensitivity. Hepatic Kupffer cells are crucial in causing this postoperative immune depression, impacting immune responses.

Area of Science:

  • Immunology
  • Surgical Pathology
  • Hepatology

Background:

  • Operative trauma and obstructive jaundice can significantly impact systemic immunity.
  • The delayed-type hypersensitivity response is a key indicator of cellular immune function.

Purpose of the Study:

  • To investigate the effects of operative trauma and obstructive jaundice on systemic immunity in a rat model.
  • To elucidate the role of hepatic Kupffer cells in postoperative immune depression.

Main Methods:

  • Utilized a rat model to assess systemic immune responsiveness via delayed-type hypersensitivity to 2,4-dinitro-1-fluorobenzene.
  • Induced obstructive jaundice through common bile duct ligation and division.
  • Impaired reticuloendothelial system function using Kupffer cell ablation with lambda-carrageenan.

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Main Results:

  • Midline laparotomy significantly decreased delayed-type hypersensitivity response at 1 week post-operation, returning to control levels by 2 weeks.
  • Common bile duct ligation caused a sustained depression in hypersensitivity response at 2 and 3 weeks.
  • Kupffer cell ablation prevented the typical postoperative immune hyporesponsiveness, suggesting their critical role.

Conclusions:

  • Hepatic Kupffer cells play a significant role in the induction of postoperative immune depression.
  • Obstructive jaundice contributes to the suppression of systemic immune responses.
  • Understanding these mechanisms is vital for managing perioperative immune function.