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Related Concept Videos

Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
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Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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Kidney Transplant I: Introduction01:28

Kidney Transplant I: Introduction

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A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
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The ABO Blood Group01:12

The ABO Blood Group

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The ABO blood group system is a critical element of transfusion medicine, essential for determining blood compatibility in transfusions and organ transplants. It is based on specific antigens, or agglutinogens, present on the surface of red blood cells (RBCs) and corresponding antibodies, or agglutinins, in the blood plasma.
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Overview
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Tissue Transplantation01:24

Tissue Transplantation

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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
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The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
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Related Experiment Video

Updated: Sep 9, 2025

In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients
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Laboratory approaches in desensitization for ABO-incompatible transplantation.

Kyung-Hwa Shin1,2, Hyun-Ji Lee1,3

  • 1Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea.

Clinical Transplantation and Research
|September 5, 2025
PubMed
Summary

ABO-incompatible transplants are now possible due to better immunosuppression. Accurate anti-ABO isoagglutinin titer measurement and reduction are key to preventing antibody-mediated rejection and ensuring transplant success.

Keywords:
DesensitizationGraft rejectionHemagglutininsPlasmapheresisTransplantation

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Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
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Area of Science:

  • Transplantation immunology
  • Clinical laboratory science
  • Immunosuppression strategies

Background:

  • ABO-incompatible transplantation was historically contraindicated due to hyperacute rejection risks.
  • Advances in immunosuppression and desensitization have made ABO-incompatible transplantation feasible.
  • Accurate anti-ABO isoagglutinin titer measurement is critical for successful outcomes.

Purpose of the Study:

  • To review the principles of hemagglutination and isoagglutinin titer measurement.
  • To discuss the clinical significance of isoagglutinin rebound and its link to rejection.
  • To highlight ongoing efforts in laboratory standardization for ABO-incompatible transplantation.

Main Methods:

  • Review of hemagglutination principles and isoagglutinin titer measurement techniques.
  • Analysis of factors influencing agglutination sensitivity.
  • Discussion of desensitization protocols and emerging therapeutic agents.

Main Results:

  • High pretransplant isoagglutinin titers (≥1:32) are strongly associated with antibody-mediated rejection (AMR).
  • Posttransplant isoagglutinin rebound is a significant risk factor for AMR, especially in liver and kidney recipients.
  • Various desensitization strategies, including rituximab, plasmapheresis, and novel agents, are employed.

Conclusions:

  • Effective management of anti-ABO isoagglutinin titers is paramount for ABO-incompatible transplantation success.
  • Careful monitoring for isoagglutinin rebound is essential post-transplant to mitigate AMR risk.
  • Continued research and standardization are needed to optimize laboratory and clinical practices.