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Articles 1 - 4 of 4
Full-Text Articles in Medicine and Health Sciences
Large Plasmids Of Avian Escherichia Coli Isolates, Dawn M. Doetkott, Lisa K. Nolan, Catherine W. Giddings, David L. Berryhill
Large Plasmids Of Avian Escherichia Coli Isolates, Dawn M. Doetkott, Lisa K. Nolan, Catherine W. Giddings, David L. Berryhill
Lisa K. Nolan
The plasmid DNA of 30 Escherichia coli isolates from chickens was extracted and examined using techniques designed to isolate large plasmids. This plasmid DNA was examined for the presence of certain known virulence-related genes including cvaC, tra7 and some aerobactin-related sequences. Seventeen of the 30 isolates contained from one to four plasmids greater than 50 kb in size. Eleven of these 17 strains possessed plasmids greater than 100 kb in size. Therefore, E. coli isolates of chickens frequently contain large plasmids, and many of these plasmids are likely to contain virulence related sequences.
Analysis Of Plasmids Cloned From A Virulent Avian Escherichia Coli And Transformed Into Escherichia Coli Dh5Α, Richard E. Wooley, Penelope S. Gibbs, Harry W. Dickerson, John Brown, Lisa K. Nolan
Analysis Of Plasmids Cloned From A Virulent Avian Escherichia Coli And Transformed Into Escherichia Coli Dh5Α, Richard E. Wooley, Penelope S. Gibbs, Harry W. Dickerson, John Brown, Lisa K. Nolan
Lisa K. Nolan
Three of four plasmids from a virulent wild-type avian Escherichia coli were cloned or transformed into an avirulent laboratory recipient E. coli DH5a and tested for the ability to confer a virulence phenotype. The three plasmids transformed into E. coli DH5a were 5, 6, and 56 kb. A fourth plasmid of 64 kb was not successfully transformed. Parameters used to measure virulence included presence of type 1 pili and a smooth lipopolysaccharide (LPS) layer, motility, production of Colicin V, resistance to host complement, and embryo lethality. The 5-kb plasmid encoded for ampicillin resistance, whereas the 6-kb plasmid encoded for tetracycline …
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
School of Veterinary and Biomedical Sciences: Faculty Publications
Bovine cell line resistant to infection by the pestiviruses Bovine Viral Diarrhea Virus (BVDV), Hog Cholera Virus (HCV) and Border Disease Virus (BDV) and all progeny and mutants thereof. A bovine cell line (CRIB) that is resistant to infection by cytopathic and non-cytopathic BVDV and by other Pestiviruses due to a stable, recessive genetic defect which blocks infection at the level of viral entry.
Cytokines In Pigs Bred Selectively For High And Low Immune Response [Abstract Only], Jay Reddy, Bruce N. Wilkie, Bonnie A. Mallard, Soren Rosendal
Cytokines In Pigs Bred Selectively For High And Low Immune Response [Abstract Only], Jay Reddy, Bruce N. Wilkie, Bonnie A. Mallard, Soren Rosendal
Jay Reddy Publications
Yorkshire pigs have been bred for high (H) and low (L) immune response based on selection for multiple antibody (Ab) and cell mediated immune response traits. High responders have better production and larger litter size when compared with controls and low responders. The ability of high and low line pigs to resist M. hyorhinis infection has been tested. The high responders had more rapid and higher Ab response and the severity of the disease was less, as judged by clinical and postmortem signs. However, arthritis was found to be relatively more severe in high responders. We hypothesized that the immune …