Search Results - "Shewen, P.E"

Longitudinal study of Clostridium difficile and antimicrobial susceptibility of Escherichia coli in healthy horses in a community setting by Schoster, A., Staempfli, H.R., Arroyo, L.G., Reid-Smith, R.J., Janecko, N., Shewen, P.E., Weese, J.S.

“…Point prevalence studies have reported carriage rates of enteric pathogens in healthy horses, but longitudinal data are lacking. Commensal E. coli is an…”
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Influence of In-Feed Virginiamycin on the Systemic and Mucosal Antibody Response of Chickens by Brisbin, J.T, Gong, J, Lusty, C.A, Sabour, P, Sanei, B, Han, Y, Shewen, P.E, Sharif, S

“…Subtherapeutic and prophylactic doses of virginiamycin are capable of altering the intestinal microbiota as well as increasing several growth parameters in…”
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Challenges in mucosal vaccination of cattle by Shewen, P.E., Carrasco-Medina, L., McBey, B.A., Hodgins, D.C.

“…Recognition of the mucosal portal of entry for many infectious diseases and of the relevance of mucosal immune response to protection has encouraged the…”
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In vitro cytokine responses of peripheral blood mononuclear cells from healthy dogs to distemper virus, Malassezia and Toxocara by Valli, J.L., Williamson, A., Sharif, S., Rice, J., Shewen, P.E.

“…Naïve CD4+ T cells may differentiate into a number of subsets including T helper 1 (Th1) Th2, Th3, Th17 and T regulatory (Treg) cells depending on the type of…”
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Performance of a whole blood interferon-gamma assay for detection and eradication of caseous lymphadenitis in sheep by Sunil, V., Menzies, P.I., Shewen, P.E., Prescott, J.F.

“…Caseous lymphadenitis (CLA), a chronic bacterial disease of sheep and goats caused by Corynebacterium pseudotuberculosis, could be controlled by eradication of…”
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The effect of Pasteurella haemolytica A1 leukotoxic culture supernate on the in vitro proliferative response of bovine lymphocytes by Majury, A L, Shewen, P E

“…The effect of sublethal concentrations of the Pasteurella haemolytica leukotoxic culture supernate on bovine lymphocyte blastogenesis was investigated…”
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Passive and active components of neonatal innate immune defenses by Firth, Matthew A, Shewen, Patricia E, Hodgins, Douglas C

“…Innate immune defenses are crucial for survival in the first days and weeks of life. At birth, newborns are confronted with a vast array of potentially…”
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Preliminary investigation of the mechanism of inhibition of bovine lymphocyte proliferation by Pasteurella haemolytica A1 leukotoxin by Majury, A L, Shewen, P E

“…Pasteurella haemolytica A1 leukotoxic culture supernate has been shown to inhibit bovine lymphocyte blastogenesis induced by concanavalin A (Con A), pokeweed…”
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T lymphocyte subpopulations diverge in commercially raised chickens by Bridle, B.W, Julian, R, Shewen, P.E, Vaillancourt, J.P, Kaushik, A.K

“…To evaluate immunocompetence in commercially raised chickens, we immunophenotyped Dekalb Delta and H&N White Leghorn (WLH) hybrids, 20 chickens in each of 3…”
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Bovine respiratory disease: commercial vaccines currently available in Canada by Bowland, S.L, Shewen, P.E

“…Bovine respiratory disease (BRD) remains a significant cost to both the beef and dairy industries. In the United States, an estimated 640 million dollars is…”
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Construction and analysis of a Mannheimia haemolytica A1 luxS mutant by van der Vinne, Amanda N., Lo, Reggie Y.C., Shewen, Patricia E.

“…Mannheimia haemolytica A1 is the causative agent of bovine pneumonic pasteurellosis, a major cause of sickness, death, and economic loss to the feedlot cattle…”
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Cloning of a gene fragment encoding bovine complement component C3d with expression and characterization of derived fusion proteins by Firth, Matthew A., Prando Moore, D., Pei, Yanlong, Shewen, Patricia E., Lo, Reggie Y.C., Yoo, Dongwan, Hodgins, Douglas C.

“…The gene fragment coding for bovine C3d gene ( boC3d) was cloned and expressed as a component of fusion proteins destined for use in vaccine studies in cattle,…”
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Safety, Immunogenicity, and Efficacy of Two Escherichia coli cya crp Mutants as Vaccines for Broilers by Peighambari, S. M, Hunter, D. B, Shewen, P. E, Gyles, C. L

“…Attenuated derivatives (Δcya Δcrp mutants) of an O2 and an O78 avian septicemic Escherichia coli strain were used to immunize broiler chickens by spray to…”
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Clopidogrel induced suppression of bovine platelet activation in vitro and a preliminary study of its effect on the development of Mannheimia haemolytica induced pneumonia by Coomber, Brenda L., Mitchell, Gordon B., Starr, Amanda E., Minhas, Kanwal, Tamblyn, Angela, Shewen, Patricia E., Gentry, Patricia A.

“…We report here on the influence of the platelet antagonist clopidogrel (Plavix) on bovine platelet function. We first evaluated the capacity of clopidogrel to…”
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Pregnancy failure following vaginal infection of sheep with Chlamydia psittaci prior to breeding by Papp, J.R, Shewen, P.E

“…Enzootic abortion in sheep, caused by Chlamydia psittaci, has been associated with pregnancy failure in most sheep-producing countries. Late-term abortions or…”
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Introduction by Shewen, P.E., Lunney, J.K., Gershwin, L.J.

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A neutral glycoprotease of Pasteurella haemolytica A1 specifically cleaves O-sialoglycoproteins by Abdullah, K.M. (Guelph-Waterloo Centre for Graduate Work in Chemistry, Ontario, Canada), Udoh, E.A, Shewen, P.E, Mellors, A

“…A neutral metalloprotease with marked specificity for an O-sialoglycoprotein has been isolated from culture supernatants of Pasteurella haemolytica A1. The…”
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Abortion and subsequent excretion of chlamydiae from the reproductive tract of sheep during estrus by Papp, J.R. (University of Guelph, Guelph, Ontario, Canada), Shewen, P.E, Gartley, C.J

“…Chlamydia psittaci serovar 1 infection in pregnant sheep typically causes abortion or the birth of weak lambs. Eight sheep that experienced chlamydia-induced…”
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association of titers to bovine coronavirus with treatment for bovine respiratory disease and weight gain in feedlot calves by Martin, S.W, Nagy, E, Shewen, P.E, Harland, R.J

“…The association between bovine respiratory disease (BRD) and antibody titers to bovine coronavirus (BCV) was studied in 604 calves (19 different groups in 4…”
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Evidence of bovine immunoglobulin G1 (IgG1) protease activity in partially purified culture supernate of Pasteurella haemolytica A1 by Lee, C.W, Shewen, P.E

“…In the bovine respiratory tract, IgG1 is a major secretory immunoglobulin (Ig), and both IgG1 and IgG2 are believed to be important in defense against…”
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