Effect of thiomersal on dissociation of intact (146S) foot-and-mouth disease virions into 12S particles as assessed by novel ELISAs specific for either 146S or 12S particles.
Summary of "Effect of thiomersal on dissociation of intact (146S) foot-and-mouth disease virions into 12S particles as assessed by novel ELISAs specific for either 146S or 12S particles."
Intact (146S) foot-and-mouth disease virions (FMDVs) can dissociate into specific (12S) viral capsid degradation products. Using two single-domain antibody fragments that bind specifically to either 146S or 12S particles we developed two ELISAs for the quantification of these particles in FMDV antigen preparations used for vaccine manufacturing. Only O serotype strains are detected in the 146S specific ELISA whereas strains of most serotypes are detected in the 12S specific ELISA. However, the 146S concentration of A and Asia 1 serotype strains could be measured indirectly using the 12S specific ELISA by prior conversion of 146S into 12S particles by heat treatment. This allowed us to demonstrate that addition of the preservative thiomersal to FMDV antigens stimulates the dissociation into 12S particles of O, A and Asia 1 serotype strains upon prolonged storage at 4°C. FMDV dissociation is known to result in a strongly reduced immunogenicity, which was experimentally confirmed here. Therefore, we recommend to omit thiomersal from FMD vaccines to increase its shelf life.
Central Veterinary Institute of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, The Netherlands.
This article was published in the following journal.
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21316500
- DOI: http://dx.doi.org/10.1016/j.vaccine.2011.01.069
Medical and Biotech [MESH] Definitions
Foot-and-mouth Disease Virus
The type species of APHTHOVIRUS, causing FOOT-AND-MOUTH DISEASE in cloven-hoofed animals. Several different serotypes exist.
Hand, Foot And Mouth Disease
A mild, highly infectious viral disease of children, characterized by vesicular lesions in the mouth and on the hands and feet. It is caused by coxsackieviruses A.
Vesicular Exanthema Of Swine Virus
The type species of the genus VESIVIRUS infecting pigs. The resulting infection is an acute febrile disease which is clinically indistinguishable from FOOT AND MOUTH DISEASE. Transmission is by contaminated food.
Vesicular Stomatitis Indiana Virus
The type species of VESICULOVIRUS causing a disease symptomatically similar to FOOT-AND-MOUTH DISEASE in cattle, horses, and pigs. It may be transmitted to other species including humans, where it causes influenza-like symptoms.
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