Related Experiment Videos
The Le(a+b+) phenotype in Polynesians
S M Henry1, L A Simpson, D G Woodfield
1Department of Transfusion Medicine, Auckland Regional Blood Centre, Auckland Hospital, New Zealand.
Human Heredity
|January 1, 1988
Summary
The rare Lewis phenotype Le(a+b+) was found in Polynesian populations, with higher frequency in blood group 0 individuals. This blood group antigen
Area of Science:
- * Human genetics
- * Population genetics
- * Immunogenetics
Background:
- * The Lewis blood group system is important in transfusion medicine and population studies.
- * The Le(a+b+) phenotype is rare and its distribution in different ethnic groups is of scientific interest.
Purpose of the Study:
- * To investigate the prevalence of the Lewis phenotype Le(a+b+) in Polynesian populations.
- * To explore associations between this phenotype and blood groups, age, sex, and H reactivity.
Main Methods:
- * Phenotypic analysis of Lewis antigens (Le(a) and Le(b)) in blood samples.
- * Statistical analysis to determine frequencies and associations.
Main Results:
- * The Le(a+b+) phenotype was detected in Maori, Samoan, Cook Islander, Nuiean, and Tokelau Islander groups.
- * The phenotype occurred across all ABO blood groups but was significantly more frequent in individuals with blood group 0.
- * No significant association was found with H reactivity in blood group A donors, nor with age or sex.
Conclusions:
- * The Le(a+b+) phenotype is present in various Polynesian populations.
- * Blood group 0 is a significant factor associated with increased frequency of the Le(a+b+) phenotype in these populations.
- * The phenotype's distribution is independent of age, sex, and H reactivity in group A donors within this study cohort.