Portal de Periódicos da CAPES

Leishmania (Viannia) braziliensis: Genetic Relationships between Strains Isolated from Different Areas of Brazil as Revealed by DNA Fingerprinting and RAPD

1995; Elsevier BV; Volume: 80; Issue: 4 Linguagem: Inglês

10.1006/expr.1995.1084

1090-2449

Rosângela Fátima Gomes, Andréa Mara Macedo, Sérgio D. J. Pena, Maria Norma Melo,

Research on Leishmaniasis Studies

Leishmania (Viannia) braziliensis isolates from two different geographic areas in Brazil were studied by DNA fingerprinting with the 33.15 multilocal probe and PCR with arbitrary primers (random amplification of polymorphic DNA-RAPD). The genetic distance of strains was measured by band sharing. The results showed that the strains isolated in Minas Gerais, southeastern Brazil, are very different from those isolated in Pará, northern Brazil. Strains from Minas Gerais constituted a relatively homogeneous group, presenting DNA fingerprint patterns with 76% of shared bands and RAPD profiles with 93% of shared bands. In contrast, strains from Pará showed higher genetic variability, with only 17 and 45% of shared bands in DNA fingerprint and RAPD patterns, respectively. This study suggests that genetic differences between L. braziliensis from both areas might have an epidemiological significance.