Abstract

Objective To explore the effect of acute humoral rejection on kidney graft survival.Methods 1098 patients received cadaveric renal transplant from January 2002 to December 2008 in our center. All patients were given triple immunosuppressants including tacrolimus or cyclosporine.According to patients who experienced biopsy-proved humoral rejection and cellular rejection within one year post-transplant, there were 53 cases in humoral rejection group, 109 in cellular rejection group (including 63 patients with borderline change), and 936 in normal group. Patients who experienced acute rejection received mythyl-prednisolone pulse, or received anti-CD3 antibody/plasma exchange/globulin. Clinical characteristics before operation including sex, age, HLA mismatch, panel reactive antibody, cold/warm ischemic time, graft loss rate and graft survival were compared among three groups. The effect of completely reversed cellular rejection and humoral rejection on graft survival was analyzed. Results There was no significant difference in sex, age and cold ischemic time among three groups, but there was significant difference in warm ischemic time, level of PRA and HLA mismatch between cellular rejection group or humor rejection group and normal group (P＜0. 05). During a follow-up period, the incidence of graft loss in humoral rejection group was 27.4 %, significantly higher than 7.3 % in cellular rejection group and 2.2 % in normal group, P＜0. 001. Kaplan-Meier analysis revealed the survival rate of grafts in humoral rejection group was significantly lower than in cellular rejection group and normal group (P＜0.001 ). After patients with irreversible rejection were excluded,there was no significant difference in the survival rate of grafts among the three groups.Conclusion Patients with acute humoral rejection survived with inferior graft outcome,but completely reversible rejection showed no effect on the graft survival. Key words: Kidney transplantation; Immunity, humoral; Graft rejection; Survival rate

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