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Am. J. Trop. Med. Hyg., 41(4), 1989, pp. 416-421
Copyright © 1989 by The American Society of Tropical Medicine and Hygiene

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Genetic Heterogeneity in Peruvian Leishmania Isolates

Neil E. Reiner, Raymond Lo, Alejandro Llanos-Cuentas, Humberto Guerra, Linda L. Button AND W. Robert McMaster
University of British Columbia, Vancouver General Hospital Research Institute, Vancouver, British Columbia, Canada; and Instituto de Medicina Tropical "Alexander von Humboldt," Universidad Peruana Cayetano Heredia, Lima, Peru

Leishmania were isolated from Peruvian patients with uta or espundia; genomic DNA was examined for restriction fragment length differences by Southern blot analysis using DNA probes for ß-tubulin and for the major surface antigen gp63. Using 5 different restriction endonucleases, Peruvian isolates show homogeneity when examined at the ß-tubulin locus. In contrast, the organisms demonstrated heterogeneity both within and between disease groups when examined for restriction site differences within the gp63 locus. The differences observed did not correlate with the 2 disease groups. Comparison of these Peruvian isolates to New World reference strains of the Leishmania braziliensis complex reveals no consistent pattern of identity with either L. b. guyanensis, L. b. panamensis, or L. b. braziliensis.




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Copyright © 1989 by the American Society of Tropical Medicine and Hygiene.