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Nested Reverse Transcriptase-PCR (NRT-PCR) Assay for detection of Classical Swine Fever Virus

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Title Nested Reverse Transcriptase-PCR (NRT-PCR) Assay for detection of Classical Swine Fever Virus
Not Available
 
Creator P. Thakuria , S. Sarma , D. K. Sarma , D. J. Kalita , K. Sharma , R. Sharma and P. Roychoudhury
 
Subject CSFV, E2 glycoprotein, Flaviviridae, Hog cholera Virus, Pestivirus, nRT-PCR
 
Description Not Available
A major portion of the national economy of India is contributed by pig industry. Keeping the pace with
other part of India, the North Eastern region of India specially Assam has also made a significant progress in pig
industry in the recent years. A vast majority of the population being of tribal origin, pig rearing and
consumption of pork have been traditionally popular in this region. In recent times the popularity of pork among
the non-tribal particularly in urban areas is also increasing steadily.
Among various infectious agents associated with diseases of pig is the virus. Out of these viral agents,
Classical Swine Fever Virus (CSFV)is responsible for the most devastating disease that causes stillbirth,
abortion, persistent infection [1] .Also compared to any other infectious disease CSF causes more number of
deaths in pigs. Therefore, it is a cause of fear or threat to pig industry.
The etiological agent of CSF is the Classical Swine Fever Virus (CSFV), a member of the genus
Pestivirus, of the family Flaviviridae. The genome of the CSFV is single stranded RNA. The RNA is positive
sense, the number of nucleotides in the RNA is approximately 12300bp and GC content is 46%.The CSFV
measures approximately 40±3 nm in diameter and the inner core or nucleocapsid alone is about 29±3nm.The
virus has an envelope with glycosylated membrane proteins and icosahedral symmetry [2].The virus has a nontranslated
region at either end (5´ NTR and 3´ NTR), encompassing a single open reading frame encoding a
large protein that is cleaved into smaller fragments. The genes encoding the structural proteins (Cprotein, Erns,
E1 and E2) are found towards the 5´ end of the genome, and include the major envelope glycoprotein gene
E2.The genes encoding non-structural proteins (Npro, P7
, NS2, NS3, NS4A, NS4B, NS5A and NS5B) are located
mainly in the 3´ two thirds of the genome, and include the polymerase gene NS5B .The glycoprotein E2 is most
immunogenic protein and neutralizing antibodies are directed to it during CSFV infection [3, 4]. For detection
of CSF viral nucleic acid, the highly conserved E2 gene fragment of CSFV (Lowing et al., 1996) was used in the
present study. Specific primers were used to amplify E2 gene fragment of CSFV isolates from Assam using
nRT-PCR.
Not Available
 
Date 2019-12-04T06:29:14Z
2019-12-04T06:29:14Z
2015-03-01
 
Type Article
 
Identifier Not Available
2319-2380
http://krishi.icar.gov.in/jspui/handle/123456789/27044
 
Language English
 
Relation Not Available;
 
Publisher IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS)