Study on Serological Blood Group Conversion in BM Empty Phase of ABO-incompatible Allogeneic Stem Cell Transplantation / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To explore the regularity of serological conversion of blood group in BM empty phase of ABO-incompatible allogeneic stem cell transplantation so as to provide the basis for selecting the blood components in blood transfusion.</p><p><b>METHODS</b>Before hematpoietic stem cell transplantation (HSCT), the ABO and RhD blood groups of recipients and donors were identified by salt medium tube method and microcolumn gel method; after transplantation the changes of antigen intensity and antibody titer of ABO blood group in patients were periodically detected.</p><p><b>RESULTS</b>After blood group shift of 33 patients received ABO-incompatible allo-HSCT, the consistent rate of positive and regative types in major ABO incompatible group was 100%; the consistent rate of positive and negative types in minor ABO-incompatible group was 33%, no-consistent rate was 66.7%; the consistent rate of positive and negative types in bidirextional ABO incompatible group was 20%, the no-consistent rate was 80%.</p><p><b>CONCLUSION</b>After ABO-incompatible allo-HSCT, blood group antgen of patients shifts to the blood group of donors, there is a significant difference in the serological indicators between the minor and bidireetional ABO-incompatible patients and normal people.</p>

Effect of ABO-incompatible allogeneic stem cell transplantation on erythroid lineage hematopoiesis / 中国实验血液学杂志

This study was purposed to investigate the effect of ABO-incompatible allogeneic hematopoietic stem cell transplantation (allo-HSCT) on erythroid lineage hematopoiesis. The changes of ABO group, IgM and IgG antibody in 16 patients received ABO-incompatible allo-HSCT were detected. The results showed that ABO-incompatible allo-HSCT were successfully engrafted in 16 patients, and there was no difference in reconstitution of platelets and neutrophils between ABO-incompatible and ABO-compatible transplantation (p > 0.05). The time of erythroid lineage reconstitution was prolonged (p < 0.05), the disappearance time of isoagglutinins against donor-type RBC in major and bidirectional ABO-incompatible recipients was correlated with the time of erythroid lineage reconstitution. It is concluded that ABO-incompatible allo-HSCT may lead to prolong recovery of erythroid lineage hematopoiesis. Before transplantation, the removal of anti-donor isoagglutinins by plasmapheresis or transfusion of donor's erythrocytes for neutralizing the isoagglutinins against donor's erythrocytes in the recipients may facilitate RBC engraftment and reduce erythrocyte transfusion.