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Use of antibody responses against locus of enterocyte effacement (LEE)-encoded antigens to monitor enterohemorrhagic Escherichia coli infections on cattle farms

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Abstract
Enterohemorrhagic Escherichia coli (EHEC) is a significant zoonotic pathogen causing severe disease associated with watery and bloody diarrhea, hemorrhagic colitis, and the hemolytic-uremic syndrome (HUS) in humans. Infections are frequently associated with contact with EHEC-contaminated ruminant feces. Both natural and experimental infection of cattle induces serum antibodies against the LEE-encoded proteins intimin, EspA, EspB, and Tir and the Shiga toxins Stx1 and Stx2, although the latter are poorly immunogenic in cattle. We determined whether antibodies and/or the kinetics of antibody responses against intimin, Tir, EspA, and/or EspB can be used for monitoring EHEC infections in beef cattle herds in order to reduce carcass contamination at slaughter. We examined the presence of serum antibodies against recombinant O157:H7 E. coli intimin EspA, EspB, and Tir during a cross-sectional study on 12 cattle farms and during a longitudinal time course study on two EHEC-positive cattle farms. We searched for a possible correlation between intimin, Tir, EspA, and/or EspB antibodies and fecal excretion of EHEC O157, O145, O111, O103, or O26 seropathotypes. The results indicated that serum antibody responses to EspB and EspA might be useful for first-line screening at the herd level for EHEC O157, O26, and most likely also for EHEC O103 infections. However, antibody responses against EspB are of less use for monitoring individual animals, since some EHEC-shedding animals did not show antibody responses and since serum antibody responses against EspB could persist for several months even when shedding had ceased.
Keywords
MULTIPLEX-PCR, INTIMIN, GENES, O157, O145, EPEC, O111, O103, EHEC, O26

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Chicago
Joris, Adelheid, Daisy Vanrompay, Karen Verstraete, Koen De Reu, Lieven De Zutter, and Eric Cox. 2013. “Use of Antibody Responses Against Locus of Enterocyte Effacement (LEE)-encoded Antigens to Monitor Enterohemorrhagic Escherichia Coli Infections on Cattle Farms.” Applied and Environmental Microbiology 79 (12): 3677–3683.
APA
Joris, A., Vanrompay, D., Verstraete, K., De Reu, K., De Zutter, L., & Cox, E. (2013). Use of antibody responses against locus of enterocyte effacement (LEE)-encoded antigens to monitor enterohemorrhagic Escherichia coli infections on cattle farms. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 79(12), 3677–3683.
Vancouver
1.
Joris A, Vanrompay D, Verstraete K, De Reu K, De Zutter L, Cox E. Use of antibody responses against locus of enterocyte effacement (LEE)-encoded antigens to monitor enterohemorrhagic Escherichia coli infections on cattle farms. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. 2013;79(12):3677–83.
MLA
Joris, Adelheid, Daisy Vanrompay, Karen Verstraete, et al. “Use of Antibody Responses Against Locus of Enterocyte Effacement (LEE)-encoded Antigens to Monitor Enterohemorrhagic Escherichia Coli Infections on Cattle Farms.” APPLIED AND ENVIRONMENTAL MICROBIOLOGY 79.12 (2013): 3677–3683. Print.
@article{4101443,
  abstract     = {Enterohemorrhagic Escherichia coli (EHEC) is a significant zoonotic pathogen causing severe disease associated with watery and bloody diarrhea, hemorrhagic colitis, and the hemolytic-uremic syndrome (HUS) in humans. Infections are frequently associated with contact with EHEC-contaminated ruminant feces. Both natural and experimental infection of cattle induces serum antibodies against the LEE-encoded proteins intimin, EspA, EspB, and Tir and the Shiga toxins Stx1 and Stx2, although the latter are poorly immunogenic in cattle. We determined whether antibodies and/or the kinetics of antibody responses against intimin, Tir, EspA, and/or EspB can be used for monitoring EHEC infections in beef cattle herds in order to reduce carcass contamination at slaughter. We examined the presence of serum antibodies against recombinant O157:H7 E. coli intimin EspA, EspB, and Tir during a cross-sectional study on 12 cattle farms and during a longitudinal time course study on two EHEC-positive cattle farms. We searched for a possible correlation between intimin, Tir, EspA, and/or EspB antibodies and fecal excretion of EHEC O157, O145, O111, O103, or O26 seropathotypes. The results indicated that serum antibody responses to EspB and EspA might be useful for first-line screening at the herd level for EHEC O157, O26, and most likely also for EHEC O103 infections. However, antibody responses against EspB are of less use for monitoring individual animals, since some EHEC-shedding animals did not show antibody responses and since serum antibody responses against EspB could persist for several months even when shedding had ceased.},
  author       = {Joris, Adelheid and Vanrompay, Daisy and Verstraete, Karen and De Reu, Koen and De Zutter, Lieven and Cox, Eric},
  issn         = {0099-2240},
  journal      = {APPLIED AND ENVIRONMENTAL MICROBIOLOGY},
  keywords     = {MULTIPLEX-PCR,INTIMIN,GENES,O157,O145,EPEC,O111,O103,EHEC,O26},
  language     = {eng},
  number       = {12},
  pages        = {3677--3683},
  title        = {Use of antibody responses against locus of enterocyte effacement (LEE)-encoded antigens to monitor enterohemorrhagic Escherichia coli infections on cattle farms},
  url          = {http://dx.doi.org/10.1128/AEM.01029},
  volume       = {79},
  year         = {2013},
}

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