Portal de Periódicos da CAPES

Normal membrane function of abnormal β‐related erythrocyte sialoglycoproteins

1987; Wiley; Volume: 67; Issue: 4 Linguagem: Inglês

10.1111/j.1365-2141.1987.tb06170.x

1365-2141

Marion E. Reid, David J. Anstee, Ronald H. Jensen, Narla Mohandas,

Blood groups and transfusion

Summary. Red cells totally deficient in β and γ sialoglycoproteins (the Leach type of Gerbich‐negative) are elliptocytic and have altered membrane physical properties as evidenced by marked decreases in both membrane mechanical stability and membrane deformability. Red cells from individuals who are of the Gerbich and Yus phenotypes of Gerbich‐negative are also deficient in β and γ sialoglycoproteins, but possess abnormal β‐related sialoglycoproteins. In order to determine if these β‐related sialoglycoproteins can functionally substitute for normal sialoglycoproteins, we measured membrane deformability and stability of red cells of the Gerbich and Yus phenotypes. In contrast to the red cells of the Leach phenotype, cells of Gerbich and Yus phenotypes were found to have normal membrane deformability and stability. Moreover, flow cytometric analysis using a monoclonal anti‐β antibody revealed that the Gerbich and Yus phenotype red cells expressed the β‐related sialoglycoprotein to the same extent as its normal counterpart on normal cells. Based on these data, we suggest that the abnormal β‐related sialoglycoproteins can functionally substitute for normal β and γ sialoglycoproteins.