HETEROGENEITY OF THE O-ALLELES AT THE BLOOD-GROUP

Citation
Ml. Olsson et al., HETEROGENEITY OF THE O-ALLELES AT THE BLOOD-GROUP, Vox sanguinis, 74(1), 1998, pp. 46-50
Citations number
22
Categorie Soggetti
Hematology
Journal title
ISSN journal
00429007
Volume
74
Issue
1
Year of publication
1998
Pages
46 - 50
Database
ISI
SICI code
0042-9007(1998)74:1<46:HOTOAT>2.0.ZU;2-F
Abstract
Background and objectives: Amerindians are blood group O, but the dist ribution of the various O alleles is unknown. Their ABO genotypes were compared with samples from other Brazilian ethnic groups, Materials a nd methods: Genomic DNA was examined by PCR-RFLP analysis, PCR-SSP and direct sequencing. Results: An unusual allele distribution was found, with 91% of the O alleles being O-lvariant. Almost half of these alle les had an additional novel mutation (G542A), which was also detected in a few other Brazilian and European samples. The O alleles correlate d completeley with ABO-related haplotypes previously determined by Sou thern blot. Conclusion: The three Amerindian tribes represent a homoge neous (ABO blood group) population, except for the G542A mutation. The presence of this mutation in all other populations examined suggests that it originated before the migration of man into America.