PMID- 16360838 OWN - NLM STAT- MEDLINE DCOM- 20060510 LR - 20051219 IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 66 IP - 9 DP - 2005 Sep TI - Expansion of humoral donor-specific alloreactivity after renal transplantation correlates with impaired graft outcome. PG - 985-8 AB - IgG human leukocyte antigen (HLA) antibodies were investigated retrospectively after transplantation in 264 primary renal graft recipients. All patients who developed de novo donor-specific antibodies (DSA) and non-DSA (NDSA) (n = 40, 15.1%) were divided into two groups. Group A consisted of patients (n = 20) with stable good graft function (GGF), and group B consisted of patients (n = 20) who developed rejection and/or graft failure (R/GF). DSA were detected in 23 patients (57.5%). Expansion of humoral alloreactivity with the presence of DSA to more than one graft mismatched antigens and coexistence of HLA class I and II DSA were significantly correlated only with R/GF (p = 0.01). Limitation of alloreactivity to one graft-mismatched antigen was detected mainly in patients with GGF. HLA-DQ DSA alone was found only in patients with GGF (p = 0.1). No significant differences were found between the two patient groups with NDSA. Expansion of the humoral alloreactivity to more than one graft molecule in renal transplant recipients identifies patients at high risk of rejection or graft failure. Limitation of humoral alloreactivity to one graft antigen perhaps associates the presence of regulatory mechanisms with GGF only in specific cases. FAU - Varnavidou-Nicolaidou, Agathi AU - Varnavidou-Nicolaidou A AD - Histocompatibility and Immunogenetics Laboratory, Paraskevaidion Surgical and Transplant Center, Nicosia, Cyprus. avarnavidou@transplant.com.cy FAU - Iniotaki-Theodoraki, Aliki G AU - Iniotaki-Theodoraki AG FAU - Doxiadis, Ilias I N AU - Doxiadis II FAU - Georgiou, Dora AU - Georgiou D FAU - Patargias, Theocharis AU - Patargias T FAU - Stavropoulos-Giokas, Catherine AU - Stavropoulos-Giokas C FAU - Kyriakides, George AU - Kyriakides G LA - eng PT - Journal Article DEP - 20050815 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-D Antigens) RN - 0 (Isoantibodies) SB - IM MH - *Graft Rejection MH - HLA-D Antigens/*immunology MH - Histocompatibility Testing MH - Humans MH - Isoantibodies/*blood MH - Kidney Transplantation/*immunology MH - Retrospective Studies MH - Tissue Donors EDAT- 2005/12/20 09:00 MHDA- 2006/05/11 09:00 CRDT- 2005/12/20 09:00 PHST- 2005/03/17 00:00 [received] PHST- 2005/07/08 00:00 [revised] PHST- 2005/07/12 00:00 [accepted] PHST- 2005/12/20 09:00 [pubmed] PHST- 2006/05/11 09:00 [medline] PHST- 2005/12/20 09:00 [entrez] AID - S0198-8859(05)00127-8 [pii] AID - 10.1016/j.humimm.2005.07.002 [doi] PST - ppublish SO - Hum Immunol. 2005 Sep;66(9):985-8. doi: 10.1016/j.humimm.2005.07.002. Epub 2005 Aug 15.