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Revista médica de Chile

versão impressa ISSN 0034-9887

Resumo

BENEDETTO E, Juana; MOLGO N, Montserrat  e  GONZALEZ B, Sergio. Detection of HTLV-1 DNA in biopsies of Chilean patients with cutaneous T-cell lymphoma. Rev. méd. Chile [online]. 2014, vol.142, n.3, pp.314-322. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872014000300005.

Background: Human T-lymphotropic virus-1 (HTLV-1) infection has been associated with the pathogenesis of cutaneous T cell lymphomas (CTCL). Aim: To search for HTLV-1 DNA in skin biopsies of patients with CTCL. Material and Methods: A retrospective study was conducted using 25 biopsies of patients with CTCL. DNA was extracted from lymphoid tissue by microdissection. A nested PCR was conducted to detect HTLV-1 genome using primers for the tax region. As negative controls, four cases of superficial perivascular dermatitis were chosen. As positive controls, five cases of T-cell leukemia/lymphoma (ATCL) were studied. Results: A positive reaction was found in 3 of 25 cases. These biopsies corresponded to a case of Mycosis Fungoides, a case of CD30 (-) T-cell lymphoma and a case of lymphomatoid papulosis. Search was negative in the four cases of superficial perivascular dermatitis and positive in four cases of adult T-cell leukemia/lymphoma (ATCL). Conclusions: HTLV-1 DNA search in tissues is a useful tool recommended to study T-cell lymphomas. HTLV-1 infection only occurs in sporadic cases but may contribute to tumor aggressiveness and prognosis.

Palavras-chave : Human T-lymphotropic virus 1; Lymphoma; T-cell; cutaneous; Polymerase chain reaction.

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