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  • Title: Dermatological findings in 3 generations of a family with a high prevalence of human T cell lymphotropic virus type 1 infection in Brazil.
    Author: Nobre V, Guedes AC, Martins ML, Barbosa-Stancioli EF, Serufo JC, Proietti FA, Ribas JG, Ferreira CE, Lambertucci JR, GIPH Interdisciplinary Group on HTLV-1/2 Research.
    Journal: Clin Infect Dis; 2006 Nov 15; 43(10):1257-63. PubMed ID: 17051489.
    Abstract:
    BACKGROUND: Dermatologic manifestations are quite common in patients with adult T cell leukemia and lymphoma and patients with myelopathy and/or tropical spastic paraparesis associated with human T cell lymphotropic virus type 1 (HTLV-1). The aim of this study was to investigate dermatological findings presented by 30 members of a Brazilian family, half of whom are infected with HTLV-1 (as confirmed by enzyme-linked immunosorbent assay and Western blot). METHODS: The subjects underwent dermatologic examination and laboratory assessment, which included the search for the HTLV-1 genome in peripheral blood mononuclear cells (PBMCs) by qualitative and semiquantitative polymerase chain reaction (PCR) and in skin samples by nested qualitative PCR and immunofluorescence assay. RESULTS: We found that cases of xerotic dermatological alterations, including 3 cases of acquired ichthyosis, were more frequent among the infected patients (7 cases vs. none among the uninfected individuals; P=.0063). Other lesions observed in this group included impetigo, scabies, epidermal nevus, herpes zoster scar, rosacea, and juvenile acne. One HTLV-1-infected individual presented with concurrently acquired ichthyosis, impetigo, scabies, dermatophytosis, and seborrheic dermatitis. The PCR performed on PBMCs and skin samples from 24 patients confirmed the serological results in all cases. Additionally, the HTLV-1 proviral load was higher in patients with >1 skin lesion. Finally, HTLV-1 could be identified in the skin by immunofluorescence assay, which, by use of PCR as the gold standard, showed a sensitivity and specificity of 61.5% and 100%, respectively. CONCLUSIONS: Altogether, these clinical and laboratory findings point to an HTLV-1 tropism toward the skin, even in HTLV-1 carriers without adult T cell leukemia/lymphoma or HTLV-1-associated myelopathy and/or tropical spastic paraparesis.
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