Comparative sequence analysis of open reading frames 2 to 7 of the modified live vaccine virus and other North American isolates of the porcine reproductive and respiratory syndrome virus

1998 ◽  
Vol 143 (3) ◽  
pp. 601-612 ◽  
Author(s):  
S. X. Yang ◽  
J. Kwang ◽  
W. Laegreid
Keyword(s):  
Sequence Analysis ◽  
North American ◽  
Comparative Sequence Analysis ◽  
Vaccine Virus ◽  
Live Vaccine ◽  
Open Reading Frames ◽  
Respiratory Syndrome Virus ◽  
Comparative Sequence ◽  
Modified Live Vaccine ◽  
Reading Frames

scholarly journals Comparative Genomic Analysis of 18 Pseudomonas aeruginosa Bacteriophages

2006 ◽  
Vol 188 (3) ◽  
pp. 1184-1187 ◽  
Author(s):  
Tony Kwan ◽  
Jing Liu ◽  
Michael DuBow ◽  
Philippe Gros ◽  
Jerry Pelletier
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Sequence Analysis ◽  
Genomic Analysis ◽  
Comparative Sequence Analysis ◽  
Comparative Genomic Analysis ◽  
Open Reading Frames ◽  
Comparative Genomic ◽  
Comparative Sequence ◽  
Reading Frames

ABSTRACT A genomic analysis of 18 P. aeruginosa phages, including nine newly sequenced DNA genomes, indicates a tremendous reservoir of proteome diversity, with 55% of open reading frames (ORFs) being novel. Comparative sequence analysis and ORF map organization revealed that most of the phages analyzed displayed little relationship to each other.

scholarly journals Effects of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV)-Based Modified Live Vaccines on Preimmunized Sows Artificially Inseminated with European PRRSV-Spiked Semen

2012 ◽  
Vol 19 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Kiwon Han ◽  
Hwi Won Seo ◽  
Yeonsu Oh ◽  
Ikjae Kang ◽  
Changhoon Park ◽  
...  
Keyword(s):  
North American ◽  
Animal Health ◽  
Negative Control ◽  
Live Vaccine ◽  
Reproductive Failure ◽  
Respiratory Syndrome Virus ◽  
Serum Samples ◽  
The North ◽  
Group 2 ◽  
Modified Live Vaccine

ABSTRACTThe objective of the present study was to determine if the European porcine reproductive and respiratory syndrome virus (PRRSV) can be transmitted via spiked semen to preimmunized sows and induce reproductive failure. Sows were immunized with the North American PRRSV-based modified live vaccine (Ingelvac PRRS MLV; Boehringer Ingelheim Animal Health, St. Joseph, MO) and were artificially inseminated. The sows were randomly divided into three groups. The vaccinated (group 2) and nonvaccinated (group 3) sows developed a PRRSV viremia at 7 to 28 days postinsemination with the European PRRSV-spiked semen. The number of genomic copies of the European PRRSV in serum samples was not significantly different between vaccinated and nonvaccinated sows. All negative-control sows in group 1 farrowed at the expected date. The sows in groups 2 and 3 farrowed between 103 and 110 days after the first insemination. European PRRSV RNA was detected in the lungs of 8 out of 11 live-born piglets and 46 out of 54 stillborn fetuses. In addition, PRRSV RNA was detected usingin situhybridization in other tissues from vaccinated sows that had been inseminated with European PRRSV-spiked semen (group 2). The present study has demonstrated that vaccinating sows with the North American PRRSV-based modified live vaccine does not prevent reproductive failure after insemination with European PRRSV-spiked semen.

Comparative sequence analysis of rotavirus genomic segment 6--the gene specifying viral subgroups 1 and 2.

1984 ◽  
Vol 51 (1) ◽  
pp. 97-101 ◽  
Author(s):  
G W Both ◽  
L J Siegman ◽  
A R Bellamy ◽  
N Ikegami ◽  
A J Shatkin ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Comparative Sequence Analysis ◽  
Genomic Segment ◽  
Comparative Sequence

scholarly journals PRRSV detection by qPCR in processing fluids and serum samples collected in a positive stable breeding herd following mass vaccination of sows with a modified live vaccine

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
A. Lebret ◽  
P. Berton ◽  
V. Normand ◽  
I. Messager ◽  
N. Robert ◽  
...  
Keyword(s):  
The United States ◽  
Live Vaccine ◽  
Mass Vaccination ◽  
Respiratory Syndrome Virus ◽  
Serum Samples ◽  
Blood Samples ◽  
Stability Monitoring ◽  
Breeding Herd ◽  
Modified Live Vaccine ◽  
Processing Fluid

AbstractIn the last two decades, in France, Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) stabilization protocols have been implemented using mass vaccination with a modified live vaccine (MLV), herd closure and biosecurity measures. Efficient surveillance for PRRSV is essential for generating evidence of absence of viral replication and transmission in pigs. The use of processing fluid (PF) was first described in 2018 in the United States and was demonstrated to provide a higher herd-level sensitivity compared with blood samples (BS) for PRRSV monitoring. In the meantime, data on vertical transmission of MLV viruses are rare even as it is a major concern. Therefore, veterinarians usually wait for several weeks after a sow mass vaccination before starting a stability monitoring. This clinical study was conducted in a PRRSV-stable commercial 1000-sow breed-to-wean farm. This farm suffered from a PRRS outbreak in January 2018. After implementing a stabilisation protocol, this farm was controlled as stable for more than 9 months before the beginning of the study. PF and BS at weaning were collected in four consecutive batches born after a booster sow mass MLV vaccination. We failed to detect PRRSV by qPCR on PF and BS collected in a positive-stable breeding herd after vaccination with ReproCyc® PRRS EU (Boehringer Ingelheim, Ingelheim, Germany).

scholarly journals Woot, an Active Gypsy-Class Retrotransposon in the Flour Beetle, Tribolium castaneum, is Associated With a Recent Mutation

Genetics ◽  
1996 ◽  
Vol 143 (1) ◽  
pp. 417-426
Author(s):  
Richard W Beeman ◽  
M Scott Thomson ◽  
John M Clark ◽  
Marco A DeCamillis ◽  
Susan J Brown ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Tribolium Castaneum ◽  
Frameshift Mutation ◽  
Open Reading Frames ◽  
Red Flour Beetle ◽  
Intron Sequence ◽  
Coding Region ◽  
Long Terminal Repeats ◽  
Flour Beetle ◽  
Reading Frames

Abstract A recently isolated, lethal mutation of the homeotic Abdominal gene of the red flour beetle Tribolium castaneum is associated with an insertion of a novel retrotransposon into an intron. Sequence analysis indicates that this retrotransposon, named Woot, is a member of the gypsy family of mobile elements. Most strains of T. castaneum appear to harbor ~25-35 copies of Woot per genome. Woot is composed of long terminal repeats of unprecedented length (3.6 kb each), flanking an internal coding region 5.0 kb in length. For most copies of Woot, the internal region includes two open reading frames (ORFs) that correspond to the gag and pol genes of previously described retrotransposons and retroviruses. The copy of Woot inserted into Abdominal bears an apparent single frameshift mutation that separates the normal second ORF into two. Woot does not appear to generate infectious virions by the criterion that no envelop gene is discernible. The association of Woot with a recent mutation suggests that this retroelement is currently transpositionally active in at least some strains.

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