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Título : Highly Endemic Human T-Lymphotropic Virus Type II (HTLV-II) Infection in a Venezuelan Guahibo Amerindian Group
Autor : Leon-Ponte, Matilde
Noya, Oscar
Bianco Colmenares, Nicolás E.
Echeverría de Perez, Gloria
Palabras clave : HTLV-II
Amerindians
Polymerase chain reaction-
Venezuela
human T-cell lymphotropic virus
immunofluorescence
mononuclear cell
pol gene
Fecha de publicación : 1996
Editorial : Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology
Citación : Vol. 13;No. 3 pp 281-286
Resumen : Sera from 166 Guahibo Indians (55% of the population) living in southwest Venezuela were screened by enzyme-linked immunoassay for antibodies to human T-cell lymphotropic virus (HTLV) I and II. Positive samples were confirmed by immunofluorescence and Western blot. Forty-one Guahibos (24.8%) were found to be seropositive. Polymerase chain reaction (PCR) analysis of proviral DNA in mononuclear cell lysates revealed the virus to be HTLV-II. Prevalence increased with age, and sexual contact with HTLV-II-seropositive partners was identified as a risk factor for infection. PCR amplification of a region of the pol gene, utilizing the primer pair SK110/SK111, with subsequent digestion of the 140-base-pair amplification products with HinfI and MseI restriction enzymes, showed an HTLV-II subtype-b restriction pattern in all cases. These data suggest that the substrain infecting this Guahibo community belongs to the b subtype, the most frequent among Paleo-Amerindian populations.
URI : http://hdl.handle.net/123456789/14573
ISSN : 1077-9450
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