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Circulating Anti-endothelial Cell Antibodies Are Associated with Poor Outcome in Renal Allograft Recipients with Acute Rejection

Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China

Correspondence: Dr. Leishi Li, Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, 305 East Zhong Shan Road, Nanjing, 210002, China. Phone: +86-25-84801992; Fax: +86-25-84801992; E-mail: sunqiquan{at}hotmail.com

Background and objectives: Anti-endothelial cell antibody (AECA) can cause hyperacute rejection and immediate graft loss after renal transplantation; however, its prevalence and significance during acute rejection are unknown. Previous studies suggested that AECA may be detected in recipients with acute vascular rejection (AVR).

Design, setting, participants, & measurements: We retrospectively analyzed 653 cadaveric renal transplant recipients; circulating AECA was positive in 13 of 47 cases of AVR; another two cases of hyperacute rejection also had detectable AECA. Twenty-six cases of AVR without circulating AECA were selected as controls.

Results: AECA-positive AVR usually occurred within 1 yr after transplantation and mostly was resistant to steroid treatment. Compared with the control group, the AECA-positive group was associated with a significantly lower 1-yr graft survival rate (46.7 versus 80.5%; P = 0.038), and more patients had histologic interstitial plasma cell infiltration (53.8 versus 11.5%; P = 0.005). More patients with AECA-positive AVR experienced another one or more episodes of acute rejection during 1 yr of follow-up (75.0 versus 13.0%; P = 0.003). AECA-positive AVR with C4d deposition in peri-tubular capillaries had the worst outcome in this cohort, and it accounted for 38.5% graft loss in AVR. AECA in turn accounted for 71.4% of graft loss in C4d⁺ AVR.

Conclusions: Circulating AECA is associated with poor outcome in renal allograft recipients with acute rejection and should be monitored regularly.

This article has been cited by other articles:

				M. A. Little, B. Hassan, S. Jacques, D. Game, E. Salisbury, A. E. Courtney, C. Brown, A. D. Salama, and L. Harper Renal transplantation in systemic vasculitis: when is it safe? Nephrol. Dial. Transplant., October 1, 2009; 24(10): 3219 - 3225. [Abstract] [Full Text] [PDF]