PMID- 11997282 OWN - NLM STAT- MEDLINE DCOM- 20020516 LR - 20190623 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 105 IP - 16 DP - 2002 Apr 23 TI - Human leukocyte antigen-G expression after heart transplantation is associated with a reduced incidence of rejection. PG - 1949-54 AB - BACKGROUND: Human leukocyte antigen (HLA)-G, a nonclassic major histocompatibility complex class I molecule expressed in the extravillous cytotrophoblast at the feto-maternal interface, is known to protect the fetus from maternal cellular immunity. In a preliminary study, we showed that HLA-G is expressed in the hearts of some patients after heart transplantation. METHODS AND RESULTS: In the present study, a larger number of patients was investigated to confirm this finding and to look for possible correlations between HLA-G expression and the number and types of rejection. Expression of HLA-G in endomyocardial biopsy specimens was investigated by immunohistochemical analysis, and detection of the soluble HLA-G in the serum was performed by immunoprecipitation followed by Western blot analysis. HLA-G was detected in the biopsy specimens and serum of 9 of 51 patients (18%). The number of episodes of acute rejection was significantly lower in HLA-G-positive patients (1.2+/-1.1) as compared with HLA-G-negative patients (4.5+/-2.8) (P<0.001). No chronic rejection was observed in HLA-G-positive patients, whereas 15 HLA-G-negative patients had chronic rejection (P<0.032). A longitudinal study of these patients reveals that the status of HLA-G expression was maintained after 6 months both in serum and in biopsy specimens. During this period, HLA-G-positive patients did not have chronic rejection. CONCLUSIONS: There is a significant correlation between rejection and HLA-G expression in the heart after transplantation. HLA-G expression and its effect in reducing the incidence and severity of rejection seem to be stable throughout the evolution. FAU - Lila, Nermine AU - Lila N AD - Laboratory for the Study of Cardiac Grafts and Prostheses, University of Pierre et Marie Curie, Broussais Hospital, Paris, France. nerminelila@yahoo.fr FAU - Amrein, Catherine AU - Amrein C FAU - Guillemain, Romain AU - Guillemain R FAU - Chevalier, Patrick AU - Chevalier P FAU - Latremouille, Christian AU - Latremouille C FAU - Fabiani, Jean-Noel AU - Fabiani JN FAU - Dausset, Jean AU - Dausset J FAU - Carosella, Edgardo D AU - Carosella ED FAU - Carpentier, Alain AU - Carpentier A LA - eng PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (HLA Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Adult MH - Aged MH - Endocardium/metabolism MH - Female MH - Graft Rejection/diagnosis/epidemiology/*metabolism MH - HLA Antigens/*metabolism MH - HLA-G Antigens MH - *Heart Transplantation MH - Histocompatibility MH - Histocompatibility Antigens Class I/*metabolism MH - Humans MH - Incidence MH - Longitudinal Studies MH - Male MH - Middle Aged EDAT- 2002/05/09 10:00 MHDA- 2002/05/17 10:01 CRDT- 2002/05/09 10:00 PHST- 2002/05/09 10:00 [pubmed] PHST- 2002/05/17 10:01 [medline] PHST- 2002/05/09 10:00 [entrez] AID - 10.1161/01.cir.0000015075.89984.46 [doi] PST - ppublish SO - Circulation. 2002 Apr 23;105(16):1949-54. doi: 10.1161/01.cir.0000015075.89984.46.