Biomaterial Database

Serological and biochemical analysis of some recent type A foot-and-mouth disease virus isolates from the Middle East. 1988

A R Samuel, and N J Knowles, and R P Kitching

World Reference Laboratory for Foot-and-Mouth Disease, AFRC Institute for Animal Health, Woking, Surrey.

In 1986 and 1987 foot-and-mouth disease virus (FMDV) serotype A was isolated from outbreaks of disease in Saudi Arabia and Iran. Selected virus isolates were antigenically distinct from the prototype A22 virus strain (A22/Iraq/64), but were serologically related to each other. However, polyacrylamide gel electrophoresis showed that whilst the respective Saudi Arabian structural polypeptides were homogeneous, those from an Iran isolate were distinct. Direct sequencing of part of the P-1D (VP1) gene demonstrated considerable difference in nucleotide homology between the two groups of viruses; the Saudi Arabian viruses were closely related to each other but only distantly related to both the A22 prototype virus strain and the Iranian virus isolate. The latter viruses were only slightly more closely related to each other. Thus there appeared to be at least two distinct FMDV type A variants co-circulating in the Middle East, both of which differed considerably from the classical A22 subtype.

UI	MeSH Term	Description	Entries
D008877	Middle East	The region of southwest Asia and northeastern Africa usually considered as extending from Libya on the west to Afghanistan on the east. (From Webster's New Geographical Dictionary, 1988)	Gaza Strip,Near East,West Bank,Gaza Strip (Palestine)
D008969	Molecular Sequence Data	Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.	Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D008970	Molecular Weight	The sum of the weight of all the atoms in a molecule.	Molecular Weights,Weight, Molecular,Weights, Molecular
D009500	Neutralization Tests	The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50).	Neutralization Test,Test, Neutralization,Tests, Neutralization
D005536	Foot-and-Mouth Disease	A highly infectious disease caused by FOOT AND MOUTH DISEASE VIRUS that affects mammals of the ARTIODACTYLA order (CATTLE; SHEEP; GOATS; and PIGS) and is characterized by high fever followed by the appearance of blisters inside the mouth and on the feet.	Foot and Mouth Disease,Disease, Foot-and-Mouth,Diseases, Foot-and-Mouth,Foot-and-Mouth Diseases
D005537	Aphthovirus	A genus of the family PICORNAVIRIDAE infecting mainly cloven-hoofed animals. They cause vesicular lesions and upper respiratory tract infections. FOOT AND MOUTH DISEASE VIRUS is the type species.	Equine rhinitis A virus,Equine rhinovirus 1,Aphthoviruses
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000956	Antigens, Viral	Substances elaborated by viruses that have antigenic activity.	Viral Antigen,Viral Antigens,Antigen, Viral
D001483	Base Sequence	The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.	DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D012367	RNA, Viral	Ribonucleic acid that makes up the genetic material of viruses.	Viral RNA