PCR detection of dengue virus using dried whole blood spotted on filter paper.
J Virol Methods
; 125(1): 75-81, 2005 Apr.
Article
en En
| MEDLINE
| ID: mdl-15737419
ABSTRACT
Whole blood dried onto filter paper constitutes a potentially useful material for molecular testing of viruses, including dengue. In order to assess the stability of viral RNA, we carried out dengue-RNA detection in whole blood infected with dengue virus that had been previously spotted onto filter paper. Filter papers were stored at room temperature, 4 and -70 degrees C and processed for PCR assay at intervals of 2, 4, 6 and 9 weeks. Our results demonstrated that dengue-RNA was stable in filter paper for 9 weeks at all tested temperatures. Furthermore, we evaluated these conditions using frozen sera and dried blood samples onto filter paper from 52 patients with confirmed clinical diagnosis of dengue infection. PCR results showed a 100% specificity and 93% sensitivity for dried blood samples. This storage method facilitates the transportation and analysis by nucleic acid amplification techniques even when freezing conditions are not available.
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Banco de datos:
MEDLINE
Asunto principal:
Sangre
/
ARN Viral
/
Recolección de Muestras de Sangre
/
Reacción en Cadena de la Polimerasa
/
Dengue
/
Virus del Dengue
Tipo de estudio:
Diagnostic_studies
Límite:
Humans
Idioma:
En
Revista:
J Virol Methods
Año:
2005
Tipo del documento:
Article
País de afiliación:
Cuba