Spectrum of pathogens in native liver, bile, and blood during pediatric liver transplantation

Nagoud Schukfeh1, Judith M Doerner, Evelyn Heintschel von Heinegg

  • 1Division of Paediatric Surgery, Department of General-Visceral and Transplant Surgery, University Hospital, University Duisburg-Essen, Essen, Germany.

Insights

Pathogens are frequently found in the native livers of pediatric patients undergoing liver transplantation (LTX). A broad-range PCR detected diverse microbes, including fungi, in 50% of patients, aiding antibiotic therapy optimization.

Area of Science:

  • Hepatology
  • Microbiology
  • Transplant Surgery

Background:

  • Liver transplantation (LTX) carries a risk of native liver pathogen release into circulation.
  • Limited data exist on the incidence and spectrum of pathogens within native livers before LTX.
  • Understanding native liver microbiology is crucial for optimizing peri-transplant antibiotic strategies.

Purpose of the Study:

  • To investigate the prevalence and types of pathogens in native livers of pediatric patients undergoing LTX.
  • To evaluate the utility of broad-range PCR for pathogen detection in this context.
  • To inform antibiotic stewardship in pediatric liver transplant recipients.

Main Methods:

  • Prospective study of 22 pediatric patients undergoing LTX.
  • Collection and cultivation of explanted liver tissue and bile samples.
  • Broad-range PCR (SepsiTest®) analysis of liver tissues.
  • Post-transplant blood cultures in 16 patients.

Main Results:

  • Pathogens were detected in 50% of patients (11/22); biliary atresia was common in positive cases (9/11).
  • Broad-range PCR identified pathogens in 7 patients, being the sole positive method in 4.
  • Positivity rates: liver tissue 41%, bile 25%, blood cultures 25%.
  • Thirteen distinct pathogens isolated (69% bacterial, 31% fungal).

Conclusions:

  • A significant proportion of pediatric patients harbor pathogens in their native livers prior to LTX.
  • Highly sensitive broad-range PCR is effective for detecting diverse pathogens, including fungi, in native liver explants.
  • These findings support the need for tailored antibiotic protocols in pediatric liver transplantation.

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