Cytomegalovirus infection is associated with increased inflammation and severe bile duct damage in rat liver allografts

Hepatology : Official Journal of the American Association for the Study of Liver Diseases
T MarteliusI Lautenschlager

Abstract

It has been suggested that cytomegalovirus (CMV) infection is involved in allograft rejection. In liver transplantation, it has been suggested that CMV is associated with the development of vanishing bile duct syndrome (VBDS), and persistent CMV has been found in liver grafts that develop chronic rejection. In this experimental study, the effect of rat CMV (RCMV) infection on intragraft changes was investigated in a rat model of acute liver allograft rejection. Liver transplantations were performed in a rat strain combination of PVG (RT1c) --> BN (RT1n). No immunosuppression was given. One group of animals was infected with RCMV Maastricht Strain (10(5) plaque-forming units, intraperitoneally), and another group was left uninfected. The grafts were examined histologically after the rats were killed on postoperative days 7 through 9 at the early phase and days 20 through 30 at the late phase of rejection. Immunohistochemical studies were performed to demonstrate the immunological activation markers major histocompatibility complex class II and interleukin 2 receptors, intercellular adhesion molecule 1 (ICAM-1) and vascular cell adhesion molecule 1 (VCAM-1), and their ligands. RCMV infection was demonstrated from the grafts by cu...Continue Reading

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