Butyrylcholinesterase genetic variability in Guarani Amerindians from the Brazilian state of Mato Grosso do Sul
Genet. mol. biol
;
29(1): 8-13, 2006. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-423412
RESUMO
Human butyrylcholinesterase (BChE; EC 3.1.1.8) is a polymorphic enzyme coded by the BCHE gene (3q26.1-q26.2) while the CHE2 gene (2q33-q35) determines a still not characterized substance that forms a complex with BChE (C5), being the CHE2 C5+ and CHE2 C5- phenotypes detected in electrophoresis. The present study investigated BCHE and CHE2 variability and the BChE activity of Brazilian Guarani Amerindians from the Kaiowá and Ñandeva sub-groups living in several indigenous territories in the Brazilian state of Mato Grosso do Sul. The frequency of the BCHE exon 2 D70G (A) allele was 0.60 percent ± 0.35 percent while that of the BCHE exon 2 G390V (F-2) allele, never before screened in Amerindians, was 8.82 percent ± 1.35 percent. This is the first time that the BCHE gene exon 4 A539T (K) allele has been surveyed in Brazilian Amerindians where it was found at a frequency of 3.69 percent ± 0.85 percent, similar to that found in Chilean Mapuche Amerindians. The BCHE gene variability seen in this survey differs from that of non-isolated populations in respect to both A539T and G390V allele frequency. The CHE2 C5+ phenotype frequency was 14.40 percent ± 2.22 percent and falls within the range of that found for other Brazilian Amerindian samples.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Butirilcolinesterase
/
Indígenas Sul-Americanos
Limite:
Humanos
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Genet. mol. biol
Assunto da revista:
Genética
Ano de publicação:
2006
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Estadual de Maringá/BR
/
Universidade Federal do Paraná/BR
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