Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0018133 (graft-versus-host disease)
 18,032 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The role of the ABO blood group system in determining the outcome of bone marrow transplantation was investigated in 53 patients with aplastic anemia and acute leukemia grafted from HLA-identical siblings. There was no correlation between ABO compatibility and marrow engraftment, graft rejection, or graft-versus-host disease. In 5 recipients with antibodies prior to transplantation to antigens of the ABH system present on the cells of their donors, plasma exchange and antibody absorption in vivo were effective in permitting engraftment of ABO-incompatible bone marrow. These findings indicate that the ABO system is not a clinically significant barrier to successful bone marrow transplantation in otherwise histocompatible individuals.
 ...
PMID:ABO blood group system and bone marrow transplantation. 32 17

Another important aspect of these transplants is the possibility of assessing the variations in the activity of serum ABH transferases in receptors of organs with ABH typing different from theirs. The antigenicity of these enzymes has been proven, antitransferase antibodies being found in BMT with minor mismatch, A-group receptors of O-group bone-marrow, and in SOT with major mismatch, O-group receptors of B-group liver. The study of the properties of such antibodies is of great interest in the course of GVHD or HVGD, in either form of transplant, as well as in the knowledge of the biochemical and immunologic characteristics of these ABH enzymes.
 ...
PMID:[Evolution of antibodies and ABH plasmatic transferases in transplants with ABH difference between the recipient and donor]. 266 84

We have tested 10 bone marrow transplant donors and recipients for ABH and Lewis antigens and ABH antibodies. Two group A2 recipients stably engrafted with group O marrow produced anti-A1. Small quantities of recipient-type ABH substance were found on the posttransplant erythrocytes in cases where the recipient was a secretor but not in a single nonsecretor recipient. Lewis antigens were always of recipient type. The incidence of graft-versus-host disease and graft rejection were similar in 41 patients who received ABO-mismatched and 61 patients who received ABO-matched grafts.
 ...
PMID:ABH and Lewis antigen and antibody expression after bone marrow transplantation. 311 2

Nineteen patients with acute leukaemia underwent bone marrow transplantation despite major ABH incompatibility between donor and recipient. The marrow inoculum was prepared prior to infusion by admixture with hydroxyethyl starch to sediment the incompatible erythrocytes, which were then discarded. The infusion was well tolerated with two patients developing transient haemoglobinuria, seven patients developing low grade fever and 10 experiencing no reaction. Durable haematopoietic engraftment was achieved in the 18 evaluable patients and was not influenced by pre-transplant isohaemagglutinin titres. No difference in time to engraftment, incidence of GVHD or in overall survival was found, compared to ABH compatible transplants. Therefore, the presence of incompatibility did not appear to influence transplant outcome adversely. The technique described is a rapid and safe method for overcoming the ABH barrier in marrow transplantation.
 ...
PMID:ABH incompatible bone marrow transplantation: removal of erythrocytes by starch sedimentation. 619 May 2

We studied the role of ABH antigens in determining graft outcome in 104 patients who received HLA-identical bone marrow transplants for aplastic anaemia and acute leukaemia. ABH compatibility had no significant effect on incidence of graft rejection or graft-versus-host disease. Fifteen recipients ahd pre-transplant antibodies against donor ABH antigens. In 14, large volume plasma exchange and transfusion of donor-type erythrocytes was successful in reducing the antibody titre to low or undetectable levels. In one patient, plasma exchange was unsuccessful and red cells were removed from the marrow inoculum by unit gravity sedimentation. This approach prevented transfusion reaction, and permitted engraftment of all haematopoietic cell lines despite persistently elevated antibody titres. Parallel in vitro studies revealed that antibodies to ABH antigens failed to inhibit the growth of progenitor cells committed to both granulocyte-macrophage (CFU-C) and erythroid (BFU-E) development. These findings indicate that ABH-antigens are not clinically important transplantation antigens and suggest that ABH antigens are not operationally present on hematopoietic stem cells.
 ...
PMID:ABH antigens and bone marrow transplantation. 699 Sep 58

The aim of this study was to evaluate mixed red cells population and red blood cell chimerism after hematopoietic stem cell transplantation. Red blood cell chimerism after hematopoietic stem cell transplantation was analyzed using a series of fluorescein isothiocyanate-conjugated monoclonal antibodies (BioAtlantic, France) directed against ABH, Rh (D, C, E, c, e), Kell, Duffy, Kidd, and Ss antigens on blood samples of 14 patients with hematologic disorders undergoing hematopoietic stem cell transplantation, by flow cytometric method on days 15, 30, and 60 after transplantation. All patients showed expression of donor red cell antigens within days 15 - 30 after hematopoietic stem cell transplantation. Graft versus host disease and ABO incompatibility did not affect the expression of chimerism. Flow cytometric analysis is a simple, accurate, and valuable test which is of significant help in monitoring chimerism in allogeneic hematopoietic stem cell transplantation.
 ...
PMID:Flow cytometric evaluation of red blood cell chimerism after bone marrow transplantation in Iranian patients: a preliminary study. 1706 16