BACKGROUND Human T-cell lymphotropic virus type 1 (HTLV-1) infection can increase the risk of developing skin disorders. This study evaluated the correlation between HTLV-1 proviral load and CD4(+) and CD8(+) T cells count among HTLV-1 infected individuals, with or without skin disorders (SD) associated with HTLV-1 infection [SD-HTLV-1: xerosis/ichthyosis, seborrheic dermatitis or infective der...

Although the number of human T-cell leukemia virus type-I (HTLV-I)-infected individuals in the world has been estimated at over 10 million, no prophylaxis vaccines against HTLV-I infection are available. In this study, we took a new approach for establishing the basis of protective vaccines against HTLV-I. We show here the potential of a passively administered HTLV-I neutralizing monoclonal ant...

Adult T-cell lymphoma (ATL) is a hematological malignancy of CD4+ mature T-lymphocytes commonly associated with chronic human T-lymphotropic virus type I (HTLV-1) infection. Chronic HTLV-1 infection induces oncogenic mutations in T-cells, leading to an acute malignant transformation host cells. Atypically, ATL presents dermatological and pulmonary symptoms consistent “smoldering” disease patter...

Human T-cell leukemia virus type 1 (HTLV-1) is the etiologic agent of adult T-cell leukemia, a disease that is triggered after a long latency period. HTLV-1 is known to spread through cell-to-cell contact. In an attempt to study the events in early stages of HTLV-1 infection, we inoculated uninfected human peripheral blood mononuclear cells and the HTLV-1-producing cell line MT-2 into NOD-SCID,...

Abstract Backgrounds Therefore, reports on the risk of HTLV-1-related diseases in organ transplantation have increased recent years, and management HTLV renal remains a challenge. Patients methods We retrospectively analyzed four HTLV-1-positive recipients or donors among 89 cases from 2006 to 2021. Results Among recipients, two patients developed adult T cell leukemia/lymphoma (ATL) derived at...

BACKGROUND Over 20 million persons are infected with HTLV-I/II globally. The virus is endemic in Africa and it is also transmitted sexually. Continued identification of high risk groups is important for the control of the disease. OBJECTIVES To determine the prevalence of HTLV infection amongst two highly sexually active groups, pregnant women and CSWs in South Western Nigeria. METHODS Seru...

BACKGROUND Salvador is the city with the highest number of HTLV-1 infected individuals in Brazil, yet the main route of HTLV-1 transmission is unknown. OBJECTIVE To investigate the association of syphilis infection as a proxy for sexual transmission of HTLV-1 infection in the general population of this city. METHODS A cross sectional population-based study was conducted with 3,451 serum sam...

Human T cell leukemia virus type I (HTLV-I) is a retrovirus that is not lysed by human serum or complement. It has not been determined, however, whether HTLV-I directly binds to complement components or whether it retains infectivity after incubation with human serum. We investigated the effects of human serum on the infectivity of cell-free HTLV-I produced by human and animal cells. Plating of...

OBJECTIVE Hospital and laboratory data indicate that human T-lymphotropic virus type 1 (HTLV-1) is endemic to central Australia, but no community-based studies of its prevalence or disease burden have been reported. We determined the prevalence rates of HTLV-1 infection and of HTLV-1-associated diseases in a remote Indigenous community. SETTING A remote Northern Territory community. DESIGN ...

In 1980 and 1982, Gallo et al. described the isolation of human T-cell lymphotropic virus type I (HTLV-I) and type II (HTLV-II). In the majority of cases, infection with these viruses does not cause diseases. However, HTLV-I infection has been etiologically associated with neoplastic diseases and a variety of demyelinating neurologic disorders. The association of HTLV-II with leukemia pathogene...