scholarly journals Studies on Bluetongue virus (BTV) from Ruminant Collected Samples during 2016 in Egypt

2021 ◽  
Vol 28 (2) ◽  
pp. 76-89
Author(s):  
Mostafa El-Sebelgy ◽  
Hanafy Madbouly ◽  
Sabry Tamam ◽  
Nagwa Ata ◽  
Kawther Zaher
Keyword(s):  
Bluetongue Virus

Exposure of protein VP7 on the surface of bluetongue virus

1990 ◽  
Vol 48 (3) ◽  
pp. 600-601
Author(s):  
A.D. Hyatt
Keyword(s):  
Bluetongue Virus ◽  
Structural Proteins ◽  
Major Constituent ◽  
Outer Coat ◽  
Virus Particles ◽  
Antibody Recognition ◽  
The Core ◽  
The Family ◽  
Electron Microscopical ◽  
Physical Accessibility

Bluetongue virus (BTV) is the type species os the genus orbivirus in the family Reoviridae. The virus has a fibrillar outer coat containing two major structural proteins VP2 and VP5 which surround an icosahedral core. The core contains two major proteins VP3 and VP7 and three minor proteins VP1, VP4 and VP6. Recent evidence has indicated that the core comprises a neucleoprotein center which is surrounded by two protein layers; VP7, a major constituent of capsomeres comprises the outer and VP3 the inner layer of the core . Antibodies to VP7 are currently used in enzyme-linked immunosorbant assays and immuno-electron microscopical (JEM) tests for the detection of BTV. The tests involve the antibody recognition of VP7 on virus particles. In an attempt to understand how complete viruses can interact with antibodies to VP7 various antibody types and methodologies were utilized to determine the physical accessibility of the core to the external environment.

Umatilla Virus Association with Fibrils and Tubules in Cultured Cells

1980 ◽  
Vol 38 ◽  
pp. 476-477
Author(s):  
Neil M. Foster ◽  
Ruth D. Breckon
Keyword(s):  
Bluetongue Virus ◽  
Linear Array ◽  
Cultured Cells ◽  
Intimate Association ◽  
Infected Cells ◽  
Dark Staining ◽  
In Cells

Macrotubules have been described1 in cells infected with Umatilla virus (UMAV), an orbivirus for which bluetongue virus (BTV) is the protype. Macrotubules, often in linear array, were observed in the cytoplasm and in intimate association with viroplasms of infected cells. Macrotubules had outside and inside diameters of 20 and 15 nm and many had dark-staining centers with diameters similar to the interiors of the tubules. UMAV was 60 nm and the RNA core was 30 nm in diameter. This report describes the association of UMAV with macrotubules and two types of microtubules.

Molecular basis of bluetongue virus neutralization.

1983 ◽  
Vol 48 (3) ◽  
pp. 627-632 ◽  
Author(s):  
J Kahlon ◽  
K Sugiyama ◽  
P Roy
Keyword(s):  
Molecular Basis ◽  
Bluetongue Virus ◽  
Virus Neutralization

scholarly journals Bluetongue Virus Particles as Nanoreactors for Enzyme Delivery and Cancer Therapy

2021 ◽  
Author(s):  
Eva C. Thuenemann ◽  
Duc H. T. Le ◽  
George P. Lomonossoff ◽  
Nicole F. Steinmetz
Keyword(s):  
Cancer Therapy ◽  
Bluetongue Virus ◽  
Virus Particles ◽  
Enzyme Delivery

scholarly journals Trafficking of Bluetongue Virus Visualized by Recovery of Tetracysteine-Tagged Virion Particles

2014 ◽  
Vol 88 (21) ◽  
pp. 12656-12668 ◽  
Author(s):  
J. Du ◽  
B. Bhattacharya ◽  
T. H. Ward ◽  
P. Roy
Keyword(s):  
Bluetongue Virus ◽  
Virion Particles

A multi-species indirect ELISA for detection group-specific antibodies against VP7 protein of bluetongue virus

2019 ◽  
Vol 180 ◽  
pp. 6-8 ◽  
Author(s):  
Karam Chand ◽  
Sanchay Kumar Biswas ◽  
Muthannan Andavar Ramakrishnan
Keyword(s):  
Bluetongue Virus ◽  
Indirect Elisa ◽  
Specific Antibodies ◽  
Vp7 Protein

scholarly journals Flow cytometric analysis of in vitro bluetongue virus infection of bovine blood mononuclear cells

1992 ◽  
Vol 73 (8) ◽  
pp. 1953-1960 ◽  
Author(s):  
S. M. Barratt-Boyes ◽  
P. V. Rossitto ◽  
J. L. Stott ◽  
N. J. MacLachlan
Keyword(s):  
Virus Infection ◽  
Bluetongue Virus ◽  
Mononuclear Cells ◽  
Flow Cytometric Analysis ◽  
Bovine Blood ◽  
Flow Cytometric ◽  
Blood Mononuclear Cells

scholarly journals Analysis and phylogenetic comparisons of full-length VP2 genes of the 24 bluetongue virus serotypes

2007 ◽  
Vol 88 (2) ◽  
pp. 621-630 ◽  
Author(s):  
S. Maan ◽  
N. S. Maan ◽  
A. R. Samuel ◽  
S. Rao ◽  
H. Attoui ◽  
...  
Keyword(s):  
Bluetongue Virus ◽  
Neutralizing Antibodies ◽  
Neutralizing Antibody ◽  
Full Length ◽  
Molecular Diagnostic ◽  
Mammalian Host ◽  
Reading Frame ◽  
Diagnostic Assays ◽  
Primary Determinant ◽  
Serotype Identification

The outer capsid protein VP2 of Bluetongue virus (BTV) is a target for the protective immune response generated by the mammalian host. VP2 contains the majority of epitopes that are recognized by neutralizing antibodies and is therefore also the primary determinant of BTV serotype. Full-length cDNA copies of genome segment 2 (Seg-2, which encodes VP2) from the reference strains of each of the 24 BTV serotypes were synthesized, cloned and sequenced. This represents the first complete set of full-length BTV VP2 genes (from the 24 serotypes) that has been analysed. Each Seg-2 has a single open reading frame, with short inverted repeats adjacent to conserved terminal hexanucleotide sequences. These data demonstrated overall inter-serotype variations in Seg-2 of 29 % (BTV-8 and BTV-18) to 59 % (BTV-16 and BTV-22), while the deduced amino acid sequence of VP2 varied from 22.4 % (BTV-4 and BTV-20) to 73 % (BTV-6 and BTV-22). Ten distinct Seg-2 lineages (nucleotypes) were detected, with greatest sequence similarities between those serotypes that had previously been reported as serologically ‘related’. Fewer similarities were observed between different serotypes in regions of VP2 that have been reported as antigenically important, suggesting that they may play a role in the neutralizing antibody response. The data presented form an initial basis for BTV serotype identification by sequence analyses and comparison of Seg-2, and for development of molecular diagnostic assays for individual BTV serotypes (by RT-PCR).

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