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Updated: Jun 12, 2026
Particle Agglutination Method for Poliovirus Identification
Published on: April 20, 2011
Development of a particle agglutination method with soluble virus receptor for identification of poliovirus
Minetaro Arita1, Souji Masujima, Takaji Wakita
1Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan. minetaro@nih.go.jp
Abstract:
In the Global Polio Eradication Initiative, laboratory diagnosis plays a critical role by isolating and identifying poliovirus (PV) from the stool samples of patients with acute flaccid paralysis (AFP). In this study, we developed a particle agglutination (PA) method with a soluble human PV receptor (hPVR) in the form of an immunoadhesin (PVR-IgG2a) for the simple and rapid identification of PV. Sensitized gelatin particles with PVR-IgG2a showed specific agglutination with the culture fluid of PV-infected cells within 2 h of reaction in a one-step procedure. Detection limits for type 1, 2, and 3 PV(Sabin) strains were 1.5 x 10(6) 50% cell culture infectious doses (CCID(50)), 5.3 x 10(5) CCID(50), and 9.1 x 10(5) CCID(50), respectively. Wild-type PVs and PV isolates from acute flaccid paralysis cases examined were identified correctly with this PA method, except for some samples with a mixture of different serotypes of PVs, where a minor population of PV failed to be detected. These results suggest that this PA method is useful for the simple and rapid identification of PV, although the sensitivity was not high enough to detect a minor population of PV (<1/10 of the major population) among mixed PVs.
Insights
A new particle agglutination (PA) method uses human poliovirus receptor (hPVR) to rapidly identify poliovirus (PV) in acute flaccid paralysis (AFP) cases. This simple test is useful but may miss minor PV strains in mixed infections.
Area of Science:
- Virology
- Immunology
- Diagnostic Microbiology
Background:
- Laboratory diagnosis is crucial for the Global Polio Eradication Initiative.
- Accurate identification of poliovirus (PV) from acute flaccid paralysis (AFP) patient stool samples is essential.
Purpose of the Study:
- To develop a simple and rapid particle agglutination (PA) method for poliovirus identification.
- To utilize a soluble human PV receptor (hPVR) immunoadhesin (PVR-IgG2a) for enhanced specificity.
Main Methods:
- Developed a one-step particle agglutination (PA) assay using gelatin particles sensitized with PVR-IgG2a.
- Tested the method's efficacy with cultured poliovirus strains and clinical isolates from AFP cases.
Main Results:
- The PA method achieved specific agglutination with PV-infected cell culture fluid within 2 hours.
- Detection limits for Sabin strains were 1.5 x 10^6 (Type 1), 5.3 x 10^5 (Type 2), and 9.1 x 10^5 (Type 3) CCID50.
- Wild-type PVs and clinical isolates were correctly identified, with limitations in detecting minor PV serotypes in mixed infections.
Conclusions:
- The developed PA method offers a simple and rapid approach for poliovirus identification.
- While effective for major PV strains, the method's sensitivity requires improvement for detecting minor PV populations in mixed samples.
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