Predicting the antigenic relationship of foot-and-mouth disease virus for vaccine selection through a computational model

2020 ◽  
pp. 1-1
Author(s):  
Jingxuan Qiu ◽  
Tianyi Qiu ◽  
Qingli Dong ◽  
Dongpo Xu ◽  
Xiang Wang ◽  
...  
Keyword(s):  
Computational Model ◽  
Disease Virus ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Antigenic Relationship ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Relationship Of

scholarly journals Genetic and antigenic variation of foot-and-mouth disease virus during persistent infection in naturally infected cattle and Asian buffalo in India

2019 ◽  
Author(s):  
Jitendra K. Biswa ◽  
Rajeev Ranjan ◽  
Saravanan Subramaniam ◽  
Jajati K. Mohapatra ◽  
Sanjay Patidar ◽  
...  
Keyword(s):  
Disease Virus ◽  
Persistent Infection ◽  
Antigenic Variation ◽  
Point Mutations ◽  
Foot And Mouth Disease ◽  
Carrier State ◽  
Mouth Disease ◽  
Antigenic Relationship ◽  
Mouth Disease Virus ◽  
Foot And Mouth

AbstractThe role of foot-and-mouth disease virus (FMDV) persistently infected ruminants in initiating new outbreaks remains controversial, and the perceived threat posed by such animals hinders international trade in FMD-endemic countries. In this study we report longitudinal analyses of genetic and antigenic variations of FMDV serotype O/ME-SA/Ind2001d sublineage during naturally occurring, persistent infection in cattle and buffalo at an organised dairy farm in India. The proportion of animals from which FMDV RNA was recovered was not significantly different between convalescent (post-clinical) and sub-clinically infected animals or between cattle and buffalo across the sampling period. However, infectious virus was isolated from a higher proportion of buffalo samples and for a longer duration compared to cattle. Analysis of the P1 sequences from recovered viruses indicated fixation of mutations at the rate of 1.816 × 10-2substitution/site/year (s/s/y) (95% CI 1.362-2.31 × 10-2s/s/y). However, the majority of point mutations were transitional substitutions. Within individual animals, the mean dN/dS (ω) value for the P1 region varied from 0.076 to 0.357, suggesting the selection pressure acting on viral genomes differed substantially across individual animals. Statistical parsimony analysis indicated that all of the virus isolates from carrier animals originated from the outbreak virus. The antigenic relationship value as determined by 2D-VNT assay revealed fluctuation of antigenic variants within and between carrier animals during the carrier state which suggested that some carrier viruses had diverged substantially from the protection provided by the vaccine strain. This study contributes to understanding the extent of within-host and within-herd evolution that occurs during the carrier state of FMDV.

scholarly journals Diagnosis Based on 1D Gene Analysis of the Foot-And-Mouth Disease Virus

2020 ◽  
pp. 227-234
Author(s):  
Choe SunIl ◽  
Jin MyongIl ◽  
Hwang GwangJo ◽  
Choe KyongHo ◽  
IM MyongDok ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Disease Virus ◽  
Foot And Mouth Disease ◽  
Viral Disease ◽  
Mouth Disease ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Relationship Of ◽  
Fmdv Type ◽  
Mutation Region

A foot and mouth disease (FMD) is an acute, febrile and high contagious viral disease in many cloven hoofed domestic animals and more than 70 wild ones, resulting in severe finantial loss throughout the world. Choosing the correct seeds for foot-and-mouth disease (FMD) is an important issue in protecting this disease, and it is urgently necessary to establish a plan for vaccination in areas affected by FMD and to protect new foot-and-mouth disease. The genetic diversity and antigenic diversity of foot-and-mouth disease virus (FMDV) make eradication through vaccination difficult. Variable antigenic types exist in different geographic areas, and research projects on existing antigenic types are necessary to select vaccine in such an environment. From this, in this paper, oligonucleotide primers for detection and Selecting Serotype of FMDV were newly designed and synthesized. In addition, the nucleotide sequence of the 1D gene was aligned, the mutation region was determined, and the homology and phylogenetic relationship of the nucleotide sequence were analyzed. The antigenicity of the FMDV type O strains in the Democratic People's Republic of Korea and the correspondence between them were examined. The neutralization reaction was used to examine antigenicity between FMDV to select waxy seeds. To prevent FMD through this primer design and experimental method, the nucleic acid of FMDV was amplified by RT-PCR. Then, the nucleotide sequence of the 1D gene corresponding to the virus VP1 protein was analyzed and compared to select a seed vaccine strain.

High resolution surface structure of foot-and-mouth disease virus

1978 ◽  
Vol 36 (2) ◽  
pp. 376-377
Author(s):  
S. S. Breese ◽  
H. L. Bachrach
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Surface Structure ◽  
Disease Virus ◽  
Potassium Phosphate ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Physical Measurements ◽  
Mouth Disease Virus ◽  
Foot And Mouth

Models for the structure of foot-and-mouth disease virus (FMDV) have been proposed from chemical and physical measurements (Brown, et al., 1970; Talbot and Brown, 1972; Strohmaier and Adam, 1976) and from rotational image-enhancement electron microscopy (Breese, et al., 1965). In this report we examine the surface structure of FMDV particles by high resolution electron microscopy and compare it with that of particles in which the outermost capsid protein VP3 (ca. 30, 000 daltons) has been split into smaller segments, two of which VP3a and VP3b have molecular weights of about 15, 000 daltons (Bachrach, et al., 1975).Highly purified and concentrated type A12, strain 119 FMDV (5 mg/ml) was prepared as previously described (Bachrach, et al., 1964) and stored at 4°C in 0. 2 M KC1-0. 5 M potassium phosphate buffer at pH 7. 5. For electron microscopy, 1. 0 ml samples of purified virus and trypsin-treated virus were dialyzed at 4°C against 0. 2 M NH4OAC at pH 7. 3, deposited onto carbonized formvar-coated copper screens and stained with phosphotungstic acid, pH 7. 3.

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