Development of a latex agglutination test for norovirus detection.
Norovirus (NoV) is the leading cause of acute gastroenteritis worldwide. Currently, reverse transcription polymerase chain reaction (RT-PCR) is used commonly to detect NoVs in both clinical and environmental samples. However, RT-PCR requires expensive equipment and cannot be performed on site. In this study, a latex agglutination test (LAT) using antibody-labeled latex beads for detecting NoVs was developed. Two kinds of polyclonal antibodies, one generated from synthetic peptides and the other from E. coli-expressed NoV capsid proteins, were used to develop the LAT. Each of these polyclonal antibodies was immobilized on the surface of latex beads and tested for the ability to detect NoVs. Under optimized conditions, our LAT detected GII.4 NoV at concentrations as low as 3.3x10(5) RT-PCR units/ml in stool samples. The detection limit for the LAT was approximately 1.7 103 RT-PCR units. Forty-eight stool samples were tested for NoVs using this LAT. In comparison with an RT-PCR assay, the sensitivity and specificity of the LAT were 35% and 100%, respectively. With further optimization, this LAT used with appropriate antibodies could be applied for convenient detection of NoVs in clinical diagnosis and food monitoring.
Lee
Heetae
H
Department of Environmental Health, Institute for Health and Environment, School of Public Health, Seoul National University, Seoul, Republic of Korea.
Park
YoungBin
Y
Kim
Misoon
M
Jee
Youngmee
Y
Cheon
Doo-Sung
DS
Jeong
Hae Sook
HS
Ko
GwangPyo
G
D005759:Gastroenteritis / Q000821:virology*; D006801:Humans; D007841:Latex Fixation Tests / Q000379:methods*; D029322:Norovirus / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*
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