We investigated the presence of human T-lymphotropic virus type 2 (HTLV-2) DNA in the peripheral blood mononuclear cell subsets obtained from 18 patients coinfected with human immunodeficiency virus type 1 and HTLV-2, 6 of whom also had predominantly sensory polyneuropathy (PSP). HTLV-2 DNA and RNA were found in CD8- and CD19-positive cells, and, for patients with PSP, in CD14-positive cells as...

Retroviruses can be classified according to the morphology of their virion core or according to sequence homologies that become evident after phylogenetic analyses. Human T-lymphotropic virus type 1 (HTLV-1) is a member of the deltatype retrovirus group, other members of which include HTLV types 2, 3 and 4, bovine leukaemia virus (BLV), and simian T-cell leukaemia virus (STLV) types 1, 2 and 3 ...

OBJECTIVE This study was aimed at determining anti-human T-lymphotropic virus I/II (HTLV I/II) seroprevalence amongst blood-donors at the Clínica Reina Sofía in Bogotá, Colombia between 1999 and 2004. METHODS All people donating blood at the Clínica Reina Sofía were selected for anti-HTLV I/II testing; a survey was carried out which focused on risk factors. All blood donations were screened b...

Human T-cell lymphotropic virus type 1 (HTLV-1)-induced adult T-cell leukemia/lymphoma is an aggressive malignancy. HTLV-2 is genetically related to HTLV-1 but does not cause any malignant disease. HTLV-1 Tax transactivator (Tax-1) contributes to leukemogenesis via NF-κB. We describe transgenic Drosophila models expressing Tax in the compound eye and plasmatocytes. We demonstrate that Tax-1 but...

Division of Virology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-Dori, Niigata 951-8510, Japan; Department of Immunology, Graduate School and Faculty of Medicine, University of the Ryukyus, Okinawa, Japan; Unité d’Epidémiologie et Physiopathologie des Virus Oncogènes, Institut Pasteur, Paris, France; and Laboratory of Virus Immunology, Institute for Viru...