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Título

Influence of glutathione S-transferase T1 donor/recipient mismatch and anti-GSTT1 antibodies in hepatic graft-versus-host-disease

AutorMartínez-Bravo, María José; Tallón, Inmaculada; Espigado, Ildefonso CSIC ORCID; Pérez-Simón, José A. CSIC ORCID; Pérez-Romero, Pilar CSIC ORCID; García-Ahufinger, Irene; Aguilera, Isabel CSIC ORCID; Núñez-Roldán, Antonio CSIC ORCID
Fecha de publicación2011
EditorElsevier
CitaciónImmunology Letters 141(1): 140-144 (2011)
ResumenB cell responses to minor histocompatibility antigens (mHags) have not been extensively studied after allogeneic hematopoietic stem cell transplantation (HSCT). Glutathione S-transferase T1 (GSTT1) is a drug metabolizing enzyme encoded by a single gene that is highly expressed in liver and kidney. Anti-GSTT1 antibodies have been described in the context of antibody-mediated rejection in kidney and liver transplantation, due to a mismatch between donor and recipient. The aim of the present study was to investigate the specific immune response against GSTT1 in HSCT with production of antibodies and their influence in the development of hepatic graft-versus-host-disease (GVHD). Forty patients and their respective donors were included in the study. The median follow-up time was 35.6. months (range 0.6-76. months) and a total of 349 serum samples were tested for the presence of anti-GSTT1 antibodies by ELISA test. Statistical analysis was performed by defining the GSTT1 null donor/positive recipient as mismatch compared with the other three genetic combinations regarded as GSTT1-matched. Antibodies were found in three patients within the group of null donor/positive recipient and one within the null/null group. Development of liver GVHD, particularly its acute form, was highly associated with the GSTT1-mismatch (P=0.0178) and with the presence of post-transplant anti-GSTT1 antibodies (P=0.0076). We conclude that GSTT1 could be considered as a new mHag in hepatic GVHD. The fact that three donors were parous females and the rapid production of antibodies after HSCT suggests the existence in the graft of memory B-cells specific for the GSTT1 antigen. © 2011 Elsevier B.V.
URIhttp://hdl.handle.net/10261/68582
DOI10.1016/j.imlet.2011.09.005
Identificadoresdoi: 10.1016/j.imlet.2011.09.005
issn: 0165-2478
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