Detection of Wuchereria bancrofti DNA in paired serum and urine samples using polymerase chain reaction-based systems
Mem. Inst. Oswaldo Cruz
; 109(8): 978-983, 12/2014. graf
Artigo
em Inglês
| LILACS
| ID: lil-732610
Biblioteca responsável:
BR1.1
ABSTRACT
The Global Program for the Elimination of Lymphatic Filariasis (GPELF) aims to eliminate this disease by the year 2020. However, the development of more specific and sensitive tests is important for the success of the GPELF. The present study aimed to standardise polymerase chain reaction (PCR)-based systems for the diagnosis of filariasis in serum and urine. Twenty paired biological urine and serum samples from individuals already known to be positive for Wuchereria bancrofti were collected during the day. Conventional PCR and semi-nested PCR assays were optimised. The detection limit of the technique for purified W. bancrofti DNA extracted from adult worms was 10 fg for the internal systems (WbF/Wb2) and 0.1 fg by using semi-nested PCR. The specificity of the primers was confirmed experimentally by amplification of 1 ng of purified genomic DNA from other species of parasites. Evaluation of the paired urine and serum samples by the semi-nested PCR technique indicated only two of the 20 tested individuals were positive, whereas the simple internal PCR system (WbF/Wb2), which has highly promising performance, revealed that all the patients were positive using both samples. This study successfully demonstrated the possibility of using the PCR technique on urine for the diagnosis of W. bancrofti infection.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Contexto em Saúde:
Doenças Negligenciadas
Problema de saúde:
Helmintíase
/
Doenças Negligenciadas
/
Zoonoses
Base de dados:
LILACS
Assunto principal:
Wuchereria bancrofti
/
Filariose Linfática
/
DNA de Helmintos
/
Microfilárias
Tipo de estudo:
Estudo diagnóstico
Limite:
Animais
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
2014
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Brasil
Instituição/País de afiliação:
Centro de Pesquisas Aggeu Magalhães-Fiocruz/BR