Home    中文  
 
  • Search
  • lucene Search
  • Citation
  • Fig/Tab
  • Adv Search
Just Accepted  |  Current Issue  |  Archive  |  Featured Articles  |  Most Read  |  Most Download  |  Most Cited

Chinese Journal of Clinicians(Electronic Edition) ›› 2022, Vol. 16 ›› Issue (05): 452-456. doi: 10.3877/cma.j.issn.1674-0785.2022.05.015

• Clinical Case Study • Previous Articles     Next Articles

Autoimmune hemolytic anemia following allogeneic hematopoietic stem cell transplantation in a patient: serological detection methods for mimicking antibodies and blood transfusion strategy

Jie Zhao1, Lan Wang1, Hongmei Yang1, Yi He1, Hong Yuan1,()   

  1. 1. Department of Blood Transfusion, Sichuan Academy Of Medical Sciences, Sichuan Provincial People's Hospital, Chengdu 610031, China
  • Received:2021-08-11 Online:2022-05-15 Published:2022-06-21
  • Contact: Hong Yuan

Abstract:

Objective

To investigate the causes of cross-matching incompatibility in patients with autoimmune hemolytic anemia (AIHA) following allogeneic hematopoietic stem cell transplantation (AHSCT), and the selection of serological detection methods for irregular antibody identification, treatment measures, and blood transfusion strategies when the irregular antibody screening test in plasma is positive.

Methods

A child aged 3 years with severe anemia following AHSCT was hospitalized at Sichuan Provincial People's Hospital for red blood cell (RBC) transfusion in order to alleviate the symptoms of anemia. The ABO and Rh blood groups of the child were determined through the brine test method, and then the cross-matching test was carried out. It was found that the blood of the child was inconsistent with that of multiple homogeneous donors. Considering the serious anemia of the child, the direct antiglobulin test was performed to judge whether the RBC was sensitized; irregular antibody screening tests outside the ABO blood group system were carried out using the brine test tube method, and microcolumn antiglobulin method and polybrene method were used to determine whether there were irregular antibodies in plasma. According to the results of the irregular antibody screening test, the polybrene method was selected to determine the specificity of antibody; the cross-matching experiment was carried out by the brine test tube method, classical antiglobulin method, and polybrene method. Combined with the results of antibody identification, the appropriate donor RBC infusion was comprehensively analyzed and selected.

Results

The ABO blood group in the child was AB, RH was CCDee, and the ABO blood group had changed to the donor blood group. The direct antiglobulin test was strongly positive, and the red blood cells were sensitized by antibodies. Irregular antibodies were detected in plasma, and sensitizing antibodies released from RBCs and irregular antibodies detected in plasma were anti-Ce mimicking antibodies. Type AB RBCs with negative Ce antigen avoiding anti-Ce mimicking antibodies were selected. Three days after transfusion, the hemoglobin increased to 79 g/L, and the blood transfusion was effective.

Conclusion

Any type of AHSCT may result in AIHA, that is, there may be some autoantibodies (mimicking antibodies) in plasma which can break the ring of autologous RBCs. If the mimicking antibodies can be identified in a patient's plasma, and a donor without corresponding antigen on RBCs can be screened, the hemolytic transfusion reaction can be avoided to ensure safe and effective blood transfusion.

Key words: Allogeneic hematopoietic stem cell transplantation, Autoimmune hemolytic anemia, Autoantibody, Alloantibody, Mimicking antibody, Safe blood transfusion

京ICP 备07035254号-20
Copyright © Chinese Journal of Clinicians(Electronic Edition), All Rights Reserved.
Tel: 010-51322622 E-mail: zhlcyszz@cma.org.cn
Powered by Beijing Magtech Co. Ltd