Evaluation of a direct immunofluorescent antibody (difma) test using Leishmania genus - specific monoclonal antibody in the routine diagnosis of cutaneous leishmaniasis

A direct immunofluorescent antibody (DIFMA) test using a Leishmania genus- specific monoclonal antibody was evaluated in the routine diagnosis of cutaneous leishmaniasis (CL) in Ecuador. This test was compared with the standard diagnostic techniques of scrapings, culture and histology. Diagnostic sa...

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Bibliographic Details
Main Authors: Martha E. Chico, Ronald H. Guderian, Philip J. Cooper, Rodrigo Armijos, Max Grogl
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 1995
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Online Access:https://doaj.org/article/902bdf9b20d141c3a31c2c491f4fa1ca
Description
Summary:A direct immunofluorescent antibody (DIFMA) test using a Leishmania genus- specific monoclonal antibody was evaluated in the routine diagnosis of cutaneous leishmaniasis (CL) in Ecuador. This test was compared with the standard diagnostic techniques of scrapings, culture and histology. Diagnostic samples were taken from a total of 90 active dermal ulcers from patients from areas of Ecuador known to be endemic for cutaneous leishmaniasis. DIFMA was positive in all lesions. It was shown to be significantly superior to standard diagnostic methods either alone or in combination. The sensitivity of DIFMA did not diminish with chronicity of lesions. This test proved to be extremely useful in the routine diagnosis of CL because it is highly sensitive, is easy to use and produces rapid results. O método de imunofluorescência direta (DIFMA), com anticorpos monoclonais gênero- específicos para Leishmania, foi avaliado na rotina diagnostica da leishmaniose cutânea no Equador. O método foi comparado com técnicas diagnosticas de rotina: o esfregaço, a cultura e o exame histopatolôgico. As amostras para o diagnóstico foram obtidas de um total de 90 lesões cutâneas ativas, de doentes das ãreas do Equador, endêmicas para leishmaniose cutânea. O DIFMA foi positivo em todas as lesões, com resultados significativamente superior aos métodos diagnósticos de rotina, isolado ou em combinação. A sensibilidade do DFIMA não diminui em lesões crônicas. O método mostra-se muito útil no diagnóstico de leishmaniose cutânea, pela sua sensibilidade, rapidez e facilidade de execução.