Genus-specific kinetoplast-DNA PCR and parasite culture for the diagnosis of localised cutaneous leishmaniasis: applications for clinical trials under field conditions in Brazil
Mem. Inst. Oswaldo Cruz
;
104(7): 992-997, Nov. 2009. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-534164
ABSTRACT
The positivities of two methods for the diagnosis of localised cutaneous leishmaniasis (CL) were estimated in 280 patients enrolled in a clinical trial. The trial was conducted in an endemic area of Leishmania (Viannia) braziliensis and trial participants were patients with skin ulcers and positive leishmanin skin tests. Patients underwent aspirative skin punctures of the ulcerated lesions and lymph nodes for in vitro cultures, which were processed under field conditions at the local health centre. Skin lesion biopsies were tested at a reference laboratory using kinetoplastid DNA (kDNA)-PCR to detect DNA. The median time required to obtain a positive culture from the skin samples was seven days and the contamination rate of the samples was 1.8 percent. The positivities of the cultures from skin lesions, kDNA-PCR and the combination of the two methods were 78.2 percent (95 percent CI: 73-82.6 percent), 89.3 percent (95 percent CI: 85.1-92.4 percent) and 97.1 percent (95 percent CI: 94.5-98.5 percent). We conclude that parasite culture is a feasible method for the detection of Leishmania in field conditions and that the combination of culture and PCR has a potential role for the diagnosis of CL in candidates for clinical trials.
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Índice:
LILACS (Américas)
Assunto principal:
Leishmania braziliensis
/
Reação em Cadeia da Polimerase
/
Leishmaniose Cutânea
/
DNA de Cinetoplasto
/
Técnicas de Cultura de Células
Tipo de estudo:
Estudo diagnóstico
Limite:
Adolescente
/
Adulto
/
Criança
/
Feminino
/
Humanos
/
Masculino
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
2009
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade de Brasília/BR
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