LOW HLA-DR EXPRESSION ON MONOCYTES AS A PROGNOSTIC MARKER FOR BACTERIAL SEPSIS AFTER LIVER TRANSPLANTATION

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Abstract
Background. Low HLA-DR expression on monocytes is associated with an increased risk of infection after surgery or trauma. We determined the value of this parameter as a marker for sepsis after liver transplantation. Methods. The percentage of monocytes expressing HLA-DR was determined by flow cytometry before and after liver transplantation in nine patients. Five lung and 20 kidney transplant recipients served as controls. Results. Bacterial sepsis occurred in 5 of 9 liver transplant patients and 0 of 24 control patients. Monocyte HLA-DR expression decreased 50% in the four liver transplant patients without sepsis. Only 1 of 25 control patients had persistently low monocyte HLA-DR expression. Conclusions. Monitoring of monocyte HLA-DR expression may be helpful in identifying liver transplant patients who have an increased risk of imminent bacterial sepsis.