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Biomedical subjects

R Oyen

Publications and source records attributed to R Oyen.

At least 127 records · Page 7Linked to original sources
PubMed1977

Anti-Lu14: a Lutheran antibody defining the product of an allele at the Lu8 blood group locus.

A 'new' Lutheran-related antibody, named anti-Lu14, reacts with approximately 2.4% of random bloods. Red cells of the rare Lu:-8 phenotype are Lu:14. The data indicate, with a high probability, that the Lu 14 antigen is a product of an allele of Lu8 and that Lu14 and Lu8 comprise a third pair of alleles at the Lutheran locus. Red cells of the original Sw (a+) propositus are Lu:14. By coincidence, he has inherited two low-incidence genes. This observation may explain the discrepancy in different families concerning a possible relationship between Swa and Lutheran. Pedigree information now suggests that Swa is not a Lutheran gene.

Alleles↗
PubMed1976

Kx antigen, the McLeod phenotype, and chronic granulomatous disease: further studies.

Leukocytes of nine unrelated boys with X-linked chronic granulomatous disease lack Kx antigen. In three of these cases, the red cells also lack Kx and have the McLeod phenotype and abnormal morphology. X-linked chronic granulomatous disease CGD can thus be separated into two types. Type I cases have an antigenic deficiency that is restricted to the phagocytic leukocytes while in type II, the deficiency involves both leukocytes and red cells. Red cells of type II CGD patients have enhanced i antigen activity suggesting that they are under hemopoietic stress. Normal Kx synthesis is directed by an X-linked gene named X1k. Three variants, X2k, X3k, and X4k order the different permutations of leukocyte and red cell Kx antigen production that have been recognized.

Blood Group Antigens↗
PubMed1975

Chronic granulomatous disease and the Kell blood groups.

Fifteen antigenic determinants are known to be related to the Kell blood group. Some boys with X-linked chronic granulomatous disease have the very rare McLeod or Ko phenotype on their red cells. Serological studies of the McLeod type suggest that the weak Kell antigens that are present differ qualitatively and quantitatively from those on red cells of common Kell type. A new antigen, Kx, has been characterized and shown to be present on red cells and neutrophil leucocytes. Lack of red-cell Kx is associated with the McLeod phenotype, lack of leucocyte Kx is associated with chronic granulomatous disease.

Antigen-Antibody Reactions↗
PubMed1975

Demonstration of the Gerbich antigenic determinant on neutrophil leukocytes.

Leukocyte-platelet concentrates prepared from blood of Gerbich (Ge) positive donors possess the capability of absorbing anti-Ge. Leukocytes from Ge-negative donors do not absorb the antibody, thus confirming the Ge antigen specificity. Tests with separated leukocyte types suggest that the Ge antigen is present on neutrophils and possibly monocytes, but absent from lymphocytes and platelets.

Absorption↗