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Antigen Nou. A new high frequency Rh antigen.
Revue Francaise De Transfusion Et Immuno-Hematologie
|February 1, 1981
Summary
Researchers identified a new public antigen in the Rh blood group system. This previously unrecognized antigen was found in most donors but absent in individuals with specific Rh deletions, aiding blood transfusion compatibility.
Area of Science:
- Hematology
- Immunology
- Genetics
Background:
- Allo-immunization in pregnancy can lead to hemolytic disease of the newborn.
- The Rh blood group system is complex and clinically significant in transfusion medicine.
- Rare blood group phenotypes, such as Rh-deleted individuals, present transfusion challenges.
Purpose of the Study:
- To characterize novel antibodies found in serum from an allo-immunized D--/D-- woman.
- To identify and define a previously unrecognized antigen within the Rh blood group system.
- To investigate the prevalence of this new antigen in various blood donor populations.
Main Methods:
- Antibody separation and characterization using patient serum.
- Red blood cell antigen testing via elution and coagglutination techniques.
- Phenotyping of blood samples from random donors and individuals with known Rh variations.
Main Results:
- Three distinct antibodies were identified: anti-e, anti-Ee (Rh 17), and a novel antibody.
- The novel antibody reacted with a previously unrecognized public antigen, designated 'Nou.' antigen.
- The 'Nou.' antigen was expressed in the majority of tested donors (2750/2750) but absent in D--/D-- and Rh null individuals.
Conclusions:
- A new public antigen within the Rh blood group system has been discovered.
- This antigen is widely distributed but absent in certain Rh-deleted phenotypes.
- The identification of this antigen is crucial for improving blood transfusion compatibility and managing allo-immunized patients.