title: The role of ABO blood group compatibility in heart transplantation between closely related animal species. An experimental study using the vervet monkey to baboon cardiac xenograft model.
abstract: The role of ABO blood group compatibility on graft survival when transplantation is performed between closely related animal species is uncertain. Heart transplants (in the neck) were performed between donor vervet monkeys and recipient baboons; no immunosuppressive therapy was given. Survival in ABO-compatible pairs (group 1, n = 9) was for a mean of 10.3 (+/- 5.2) days, which was not significantly different from that in ABO-incompatible pairs (group 2, n = 9: mean survival 7.3 +/- 5.6 days). In group 2, however, three hearts were rejected hyperacutely within 60 minutes, whereas in group 1 only one heart was rejected within 24 hours (not significant). Preformed anti-vervet monkey antibody was present in only one of 18 baboons, but developed in eight others. ABO-specific antibodies were present in all nine group 2 baboons and increased in titer in six cases. Histopathologic features of vascular (humoral) rejection, sometimes associated with cellular infiltration, were seen in a majority of hearts in both groups. Though the number of animals in this study was small, ABO-incompatibility would not appear to be a major factor in cardiac xenograft survival when transplantation is performed between closely related primate species, though early hyperacute rejection would seem more likely to occur when blood group incompatibility is present.
authors.affiliation: Department of Cardiothoracic Surgery, University of Cape Town Medical School, Republic of South Africa.
authors.forename: D K
authors.initials: DK
authors.lastname: Cooper
authors.forename: P A
authors.initials: PA
authors.lastname: Human
authors.forename: A G
authors.initials: AG
authors.lastname: Rose
authors.forename: J
authors.initials: J
authors.lastname: Rees
authors.forename: M
authors.initials: M
authors.lastname: Keraan
authors.forename: B
authors.initials: B
authors.lastname: Reichart
authors.forename: E
authors.initials: E
authors.lastname: Du Toit
authors.forename: R
authors.initials: R
authors.lastname: Oriol
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D000818:Animals; D000906:Antibodies / Q000032:analysis / Q000276:immunology; D000910:Antibodies, Heterophile / Q000032:analysis; D000918:Antibody Specificity; D001787:Blood Group Incompatibility / Q000150:complications / Q000473:pathology; D002521:Cercopithecus; D003165:Complement System Proteins / Q000032:analysis; D006085:Graft Survival; D016027:Heart Transplantation; D007136:Immunoglobulins / Q000032:analysis; D009206:Myocardium / Q000276:immunology / Q000473:pathology; D010215:Papio; D014181:Transplantation Immunology; D014183:Transplantation, Heterologous
chemical_list: D000017:ABO Blood-Group System; D000906:Antibodies; D000910:Antibodies, Heterophile; D007136:Immunoglobulins; D003165:Complement System Proteins