Estudo da frequencia do alelo mutante delta 32 do gene CCR5 em uma produção de individuos infectados pelo virus da imunodeficiencia humana (HIV) atendidos no HC/UNICAMP

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

Previous studies have shown a relationship between a 32-base-pair deletion within the J3-chemokine receptor 5 (ccr5) gene and the acquisition and progression of the Acquired Human Immunodeficiency Syndrome (AIDS). Several. populations have been tested concerning this deletion, and it was found that Caucasians have a higher probability of bearing this defect, whereas in black and japanese populations it is virtually absent. In Brazil, no studies have been done to estimate this frequency in HIV infected populations, so faro In an urban brazilian population 93% of individuaIs tested showed normal CCR-5 anele and 7% were heterozygous CCRS/ ~ccr5. In this study 187 HIV-infected persons were tested to determine the prevalence of this mutation. Genomic DNA samples were amplified using primers producing a 735bp fragment, which was submmited to c1eavage with EcoRl. Normal homozygous aneles showed two fragments of 332 and 403 bp, and in heterozygous aneles an additional371 bp fragment was found. No homozygous individuaIs were found in this population, and the frequency ofheterozygous CCR5/~ccr5 was found to be 8,02%

ASSUNTO(S)

hiv (virus) aids (doença)

ACESSO AO ARTIGO

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