Beneficial effects of pentoxifylline pretreatment in non-heart-beating donors in rats

Background, Pentoxifylline (PTX) pretreatment of recipients was shown to protect against liver graft failure from ischemia-reperfusion injury after orthotopic rat liver transplantation. It has also been shown that PTX protects against normothermic ischemia-reperfusion injury to the liver in lobar ischemia model in the rat. Whether PTX can benefit the liver procured from non-heart-beating donors (NHBDs) with up to 9 hr of cold ischemia is unknown. Methods. Donor and recipient rats were pretreated with intraperitoneal PTX (50 mg/kg) 1 hr before cardiac arrest and transplantation, respectively. Grafts were transplanted 0, 30, and 60 min after cardiac arrest with additional 1 and 9 hr of cold ischemia in both PTX-pretreated or untreated (control) groups (10 rats per group). PTX (25 mg/kg/day) was continuously given to the surviving rats for 5 days postoperatively, Recipient survival rates, serum enzyme levels, and histopathological examination of postreperfusion liver biopsies were all analyzed. Results. The survival rates, serum enzyme levels, and postreperfusion histology were significantly improved in groups pretreated with PTX compared to the controls. Conclusion. Donor and recipient PTX pretreatment significantly improves the viability of the liver grafts procured from NHBDs.