The Experts below are selected from a list of 195 Experts worldwide ranked by ideXlab platform
S R Bolin - One of the best experts on this subject based on the ideXlab platform.
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Abomasitis associated with multiple antibiotic resistant salmonella enterica serotype typhimurium phagetype dt104
Veterinary Microbiology, 2002Co-Authors: Steve A Carlson, W C Stoffregen, S R BolinAbstract:Salmonella enterica serotype Typhimurium phagetype DT104 is a multiple antibiotic resistant pathogen that has been purported to be more pathogenic than other Salmonella. In this study, we evaluated the possibility that DT104 is the causative agent of veal calf Abomasitis observed in four independent outbreaks of salmonellosis. This study was undertaken to determine if the outbreaks might be due to hypervirulent S. enterica serotype Typhimurium phagetype DT104 (DT104) since Salmonella does not usually cause Abomasitis. Tissues and fluids from these calves were subjected to bacteriologic culture. Pure Salmonella cultures were then used in bovine challenge experiments. DT104 was identified as the causative agent of Abomasitis in calves. Thus, Abomasitis is a potential indicator of infection with multiple antibiotic resistant DT104 and adds credence to the apparent hypervirulence of this pathogen.
Steve A Carlson - One of the best experts on this subject based on the ideXlab platform.
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Abomasitis associated with multiple antibiotic resistant salmonella enterica serotype typhimurium phagetype dt104
Veterinary Microbiology, 2002Co-Authors: Steve A Carlson, W C Stoffregen, S R BolinAbstract:Salmonella enterica serotype Typhimurium phagetype DT104 is a multiple antibiotic resistant pathogen that has been purported to be more pathogenic than other Salmonella. In this study, we evaluated the possibility that DT104 is the causative agent of veal calf Abomasitis observed in four independent outbreaks of salmonellosis. This study was undertaken to determine if the outbreaks might be due to hypervirulent S. enterica serotype Typhimurium phagetype DT104 (DT104) since Salmonella does not usually cause Abomasitis. Tissues and fluids from these calves were subjected to bacteriologic culture. Pure Salmonella cultures were then used in bovine challenge experiments. DT104 was identified as the causative agent of Abomasitis in calves. Thus, Abomasitis is a potential indicator of infection with multiple antibiotic resistant DT104 and adds credence to the apparent hypervirulence of this pathogen.
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Secretion of a putative cytotoxin in multiple antibiotic resistant Salmonella enterica serotype Typhimurium phagetype DT104.
Microbial Pathogenesis, 2001Co-Authors: Steve A Carlson, David K. Meyerholz, Thomas J. Stabel, Bradley D. JonesAbstract:Abstract Salmonella enterica serotype Typhimurium phagetype DT104 (DT104) is a multiple antibiotic-resistant pathogen. DT104 infections have been reported in a multitude of hosts including humans, companion animals, livestock and wildlife. Recently, several isolates of DT104 were recovered from veal calves exhibiting Abomasitis, a finding that is inconsistent with classic salmonellosis. One of these isolates was used in murine ligated loop experiments where it was observed that multiresistant DT104 can elaborate a putative cytotoxin. Thus it appears that DT104 has the ability to evade pharmacologic interventions, via antibiotic resistance, and elaborate a toxin that can damage cells.
W C Stoffregen - One of the best experts on this subject based on the ideXlab platform.
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Abomasitis associated with multiple antibiotic resistant salmonella enterica serotype typhimurium phagetype dt104
Veterinary Microbiology, 2002Co-Authors: Steve A Carlson, W C Stoffregen, S R BolinAbstract:Salmonella enterica serotype Typhimurium phagetype DT104 is a multiple antibiotic resistant pathogen that has been purported to be more pathogenic than other Salmonella. In this study, we evaluated the possibility that DT104 is the causative agent of veal calf Abomasitis observed in four independent outbreaks of salmonellosis. This study was undertaken to determine if the outbreaks might be due to hypervirulent S. enterica serotype Typhimurium phagetype DT104 (DT104) since Salmonella does not usually cause Abomasitis. Tissues and fluids from these calves were subjected to bacteriologic culture. Pure Salmonella cultures were then used in bovine challenge experiments. DT104 was identified as the causative agent of Abomasitis in calves. Thus, Abomasitis is a potential indicator of infection with multiple antibiotic resistant DT104 and adds credence to the apparent hypervirulence of this pathogen.
David Francoz - One of the best experts on this subject based on the ideXlab platform.
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Abomasitis in calves: A retrospective cohort study of 23 cases (2006-2016).
Journal of Veterinary Internal Medicine, 2020Co-Authors: Eloi Guarnieri, Gilles Fecteau, Julie Berman, André Desrochers, Marie Babkine, Sylvain Nichols, David FrancozAbstract:BACKGROUND: Abomasitis is a syndrome affecting young milk-fed calves. The current veterinary literature describes mainly its necropsy findings. OBJECTIVES: To describe the clinical presentation, complementary tests, treatments, and case-fatality rate of calves with a clinical diagnosis of Abomasitis and to identify potential factors associated with outcome. METHODS: Observational retrospective cohort study (2006-2016). Review of the medical records of calves
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Abomasitis in calves a retrospective cohort study of 23 cases 2006 2016
Journal of Veterinary Internal Medicine, 2020Co-Authors: Eloi Guarnieri, Gilles Fecteau, Julie Berman, André Desrochers, Marie Babkine, Sylvain Nichols, David FrancozAbstract:BACKGROUND: Abomasitis is a syndrome affecting young milk-fed calves. The current veterinary literature describes mainly its necropsy findings. OBJECTIVES: To describe the clinical presentation, complementary tests, treatments, and case-fatality rate of calves with a clinical diagnosis of Abomasitis and to identify potential factors associated with outcome. METHODS: Observational retrospective cohort study (2006-2016). Review of the medical records of calves <3 months of age presented with abdominal and abomasal distension for <7 days that were clinically diagnosed with Abomasitis at the Faculty of Veterinary Medicine of the Universite de Montreal. A follow-up examination was conducted by telephone interview. ANIMALS: Twenty-three calves clinically diagnosed with Abomasitis. RESULTS: Median age of presentation was 3 days (range, 0-62 days). The typical duration of the clinical course was <24 hours (15/23). On admission, the 2 most common clinical signs were anorexia (13/14) and positive succussion (13/14). Hyper-l-lactatemia (15/16) and increased γ-glutamyl-transferase activity (13/14) were the most common laboratory abnormalities. Hypoproteinemia (19/22) and a left shift (15/18) of the neutrophils also were observed. The short-term case-fatality rate was 52% (12/23). The clinical diagnosis was confirmed on all necropsied calves. Clostridium spp. and Escherichia coli were the most frequently isolated bacteria. Based on univariate statistical analysis, the surviving calves were significantly (P < .05) less hypothermic, less acidemic, less hyper-l-lactatemic, and had lower serum creatinine concentrations on admission than did the deceased calves. CONCLUSIONS AND CLINICAL IMPORTANCE: In our study, Abomasitis was associated with a guarded prognosis.
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imaging diagnosis traumatic Abomasitis caused by foreign bodies in a cow
Veterinary Radiology & Ultrasound, 2016Co-Authors: Caroline Constant, David Francoz, Marie Babkine, André DesrochersAbstract:A 2-year-old Holstein cow presented with a history of colic signs of 3 days’ duration that had not responded to routine medical therapy. Physical examination findings were consistent with tachycardia and colic. Ultrasonographic examination of the abomasum revealed a thin hyperechoic line producing a cone shadow. Radiography of the cranial abdomen revealed two radiopaque objects within the abomasum. Right paracostal laparotomy and abomasotomy permitted palpation and manual removal of two metallic foreign bodies and a small quantity of gravel. The animal recovered well after surgery and no signs of colic were observed. Her appetite and rumination were also improved.
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IMAGING DIAGNOSIS—TRAUMATIC Abomasitis CAUSED BY FOREIGN BODIES IN A COW
Veterinary Radiology & Ultrasound, 2016Co-Authors: Caroline Constant, David Francoz, Marie Babkine, André DesrochersAbstract:A 2-year-old Holstein cow presented with a history of colic signs of 3 days’ duration that had not responded to routine medical therapy. Physical examination findings were consistent with tachycardia and colic. Ultrasonographic examination of the abomasum revealed a thin hyperechoic line producing a cone shadow. Radiography of the cranial abdomen revealed two radiopaque objects within the abomasum. Right paracostal laparotomy and abomasotomy permitted palpation and manual removal of two metallic foreign bodies and a small quantity of gravel. The animal recovered well after surgery and no signs of colic were observed. Her appetite and rumination were also improved.
Bradley D. Jones - One of the best experts on this subject based on the ideXlab platform.
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Secretion of a putative cytotoxin in multiple antibiotic resistant Salmonella enterica serotype Typhimurium phagetype DT104.
Microbial Pathogenesis, 2001Co-Authors: Steve A Carlson, David K. Meyerholz, Thomas J. Stabel, Bradley D. JonesAbstract:Abstract Salmonella enterica serotype Typhimurium phagetype DT104 (DT104) is a multiple antibiotic-resistant pathogen. DT104 infections have been reported in a multitude of hosts including humans, companion animals, livestock and wildlife. Recently, several isolates of DT104 were recovered from veal calves exhibiting Abomasitis, a finding that is inconsistent with classic salmonellosis. One of these isolates was used in murine ligated loop experiments where it was observed that multiresistant DT104 can elaborate a putative cytotoxin. Thus it appears that DT104 has the ability to evade pharmacologic interventions, via antibiotic resistance, and elaborate a toxin that can damage cells.
