Artigo de Periódico
The expression of ABH and Lewis antigens in Brazilian semi-isolated Black communities
Registro en:
1415-4757
Autor
CORVELO, Tereza Cristina de Oliveira
AGUIAR, Délia Cristina Figueira
SAGICA, Fernanda do Espírito Santo
Institución
Resumen
The expression of the ABH and Lewis blood groups was determined in blood and saliva samples from two semi-isolated Black communities of Northern Brazil: Cametá and Alcântara. The distributions of ABO blood group phenotypes and the ABH secretor status frequencies showed no significant differences between these populations. In contrast, there was a difference regarding the frequency of the red blood cell Le(a-b-) phenotypes, associated with erythrocyte/saliva discordance, as confirmed by the observation that individuals with Le(a-b-) red cells have the Lewis antigen in their saliva, resulting in a nongenuine Le(a-b-) phenotype, whose frequency was higher in Alcântara.