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Journal articles on the topic 'DT104'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Hermans, Armand P. H. M., Annelien M. Beuling, Angela H. A. M. van Hoek, Henk J. M. Aarts, Tjakko Abee, and Marcel H. Zwietering. "Distribution of prophages and SGI-1 antibiotic-resistance genes among different Salmonella enterica serovar Typhimurium isolates." Microbiology 152, no. 7 (2006): 2137–47. http://dx.doi.org/10.1099/mic.0.28850-0.

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Recently, the authors identified Salmonella enterica serovar Typhimurium (S. Typhimurium) definitive type (DT)104-specific sequences of mainly prophage origin by genomic subtractive hybridization. In the present study, the distribution of the prophages identified, ST104 and ST64B, and the novel prophage remnant designated prophage ST104B, was tested among 23 non-DT104 S. Typhimurium isolates of different phage types and 19 isolates of the DT104 subtypes DT104A, DT104B low and DT104L, and the DT104-related type U302. The four S. Typhimurium prophages Gifsy-1, Gifsy-2, Fels-1 and Fels-2 were als

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2

Daly, M., J. Buckley, E. Power, et al. "Molecular Characterization of IrishSalmonella enterica Serotype Typhimurium: Detection of Class I Integrons and Assessment of Genetic Relationships by DNA Amplification Fingerprinting." Applied and Environmental Microbiology 66, no. 2 (2000): 614–19. http://dx.doi.org/10.1128/aem.66.2.614-619.2000.

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ABSTRACT Salmonella enterica is among the principal etiological agents of food-borne illness in humans. Increasing antimicrobial resistance in S. enterica is a cause for worldwide concern. There is concern at present in relation to the increasing incidence of human infection with antimicrobial agent-resistant strains of S. enterica serotype Typhimurium, in particular of phage type DT104. Integrons appear to play an important role in the dissemination of antimicrobial resistance genes in many Enterobacteriaceaeincluding S. enterica. In this study the antimicrobial susceptibilities and phage typ

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3

ZHAO, TONG, MICHAEL P. DOYLE, PAULA J. FEDORKA-CRAY, PING ZHAO, and SCOTT LADELY. "Occurrence of Salmonella enterica Serotype Typhimurium DT104A in Retail Ground Beef." Journal of Food Protection 65, no. 2 (2002): 403–7. http://dx.doi.org/10.4315/0362-028x-65.2.403.

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Surveillance data of cattle and human isolates of Salmonella enterica serovar Typhimurium DT104 indicate that this pathogen emerged worldwide in the 1980s, particularly in cattle. Studies were conducted to determine the prevalence of Salmonella Typhimurium DT104 in ground beef. Samples were also tested for the presence of generic Escherichia coli. A total of 404 fresh ground beef samples obtained at retail stores from New York, San Francisco, Philadelphia, Denver, Atlanta, Houston, and Chicago were shipped overnight to Georgia for processing. Salmonella spp. were isolated from 14 (3.5%) sample

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4

Daly, M., J. Buckley, E. Power, and S. Fanning. "Evidence for a Chromosomally Located Third Integron in Salmonella enterica Serovar Typhimurium DT104b." Antimicrobial Agents and Chemotherapy 48, no. 4 (2004): 1350–52. http://dx.doi.org/10.1128/aac.48.4.1350-1352.2004.

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ABSTRACT Salmonella enterica serovar Typhimurium isolates of phage types DT104 and DT104b are frequently associated with multiple antimicrobial resistance. We describe the characterization of a class 1 integron containing dfrA1 and aadA1, genes from two Salmonella serovar Typhimurium DT104b isolates. Genetic mapping located the integron to the bacterial chromosome in each case.

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5

MURPHY, T. M., E. McNAMARA, M. HILL, et al. "Epidemiological studies of human and animal Salmonella Typhimurium DT104 and DT104b isolates in Ireland." Epidemiology and Infection 126, no. 1 (2001): 3–9. http://dx.doi.org/10.1017/s0950268801005143.

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A total of 122 human and animal Salmonella Typhimurium DT104 isolates and 6 epidemiologically related DT104b isolates from human and animal products were analysed by pulsed-field gel electrophoresis (PFGE). Genomic DNA was subjected to macrorestriction with three enzymes, SpeI, SfiI and XbaI. A total of 14 restriction fragment length polymorphism (RFLP) profiles were identified when the PFGE patterns from the three enzymes were combined. The majority of isolates (81·2%) exhibited the same RFLP profile. Six animal DT104 isolates, susceptible to enrofloxacin and resistant to naladixic acid, were

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6

Mohammed, Manal, and Beata Orzechowska. "Characterisation of Phage Susceptibility Variation in Salmonellaenterica Serovar Typhimurium DT104 and DT104b." Microorganisms 9, no. 4 (2021): 865. http://dx.doi.org/10.3390/microorganisms9040865.

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The surge in mortality and morbidity rates caused by multidrug-resistant (MDR) bacteria prompted a renewal of interest in bacteriophages (phages) as clinical therapeutics and natural biocontrol agents. Nevertheless, bacteria and phages are continually under the pressure of the evolutionary phage–host arms race for survival, which is mediated by co-evolving resistance mechanisms. In Anderson phage typing scheme of Salmonella Typhimurium, the epidemiologically related definitive phage types, DT104 and DT104b, display significantly different phage susceptibility profiles. This study aimed to char

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7

Parker, Craig T., Steven Huynh, Aaron Alexander, Andrew S. Oliver, and Kerry K. Cooper. "Genomic Characterization of Salmonella typhimurium DT104 Strains Associated with Cattle and Beef Products." Pathogens 10, no. 5 (2021): 529. http://dx.doi.org/10.3390/pathogens10050529.

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Salmonella enterica subsp. enterica serovar Typhimurium DT104, a multidrug-resistant phage type, has emerged globally as a major cause of foodborne outbreaks particularly associated with contaminated beef products. In this study, we sequenced three S. Typhimurium DT104 strains associated with a 2009 outbreak caused by ground beef, including the outbreak source strain and two clinical strains. The goal of the study was to gain a stronger understanding of the genomics and genomic epidemiology of highly clonal S. typhimurium DT104 strains associated with bovine sources. Our study found no single

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8

Gadó, I., Judit Pászti, Margit Király, and Melinda Jakab. "Integron content of Salmonella enterica serotype Typhimurium strains isolated in Hungary in the years 1997-1999." Acta Veterinaria Hungarica 51, no. 2 (2003): 121–35. http://dx.doi.org/10.1556/avet.51.2003.2.1.

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The integron content of 52 DT104/U302 phage type strains and 53 non-DT104/U302 strains of Salmonella enterica serotype Typhimurium (S. Typhimurium) was studied in PCR experiments using a 5'-CS/3'-CS primer pair (Lévesque et al., 1995). Forty-three out of 44 streptomycin- and/or ampicillin-resistant DT104 and related phage type strains were found to carry a 1 kb and/or 1.2 kb long integron. The other resistance markers did not affect the number and size of integrons; no integron-free multidrug-resistant (MDR) DT104 strains were found. The two large groups of DT104 strains (Felix-Callow's phage

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9

FRATAMICO, PINA M. "Tolerance to Stress and Ability of Acid-Adapted and Non–Acid-Adapted Salmonella enterica Serovar Typhimurium DT104 To Invade and Survive in Mammalian Cells In Vitro†." Journal of Food Protection 66, no. 7 (2003): 1115–25. http://dx.doi.org/10.4315/0362-028x-66.7.1115.

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The ability of acid-adapted (AA) and non–acid-adapted (NA) Salmonella enterica serovar Typhimurium definitive type 104 (DT104) strains to invade and multiply in mammalian cells in vitro and to survive stress conditions was examined. DT104 and non-DT104 strains were grown in tryptic soy broth without glucose (NA) or in tryptic soy broth containing 1% glucose (AA) for 18 h at 37°C. The invasiveness of DT104 strains in J774A.1 macrophage and Int407 intestinal cell lines was not more extensive than that of non-DT104 strains. In most cases, AA bacteria were less invasive than NA bacteria in both ce

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Bolton, Lance F., Lynda C. Kelley, Margie D. Lee, Paula J. Fedorka-Cray, and John J. Maurer. "Detection of Multidrug-Resistant Salmonella entericaSerotype typhimurium DT104 Based on a Gene Which Confers Cross-Resistance to Florfenicol and Chloramphenicol." Journal of Clinical Microbiology 37, no. 5 (1999): 1348–51. http://dx.doi.org/10.1128/jcm.37.5.1348-1351.1999.

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Salmonella enterica serotype typhimurium(S. typhimurium) DT104 (DT104) first emerged as a major pathogen in Europe and is characterized by its pentadrug-resistant pattern. It has also been associated with outbreaks in the United States. The organism typically carries resistance to ampicillin, chloramphenicol, streptomycin, sulfonamides, and tetracycline. The mechanism of chloramphenicol resistance in DT104 was determined by producing antibiotic-resistant Escherichia coli host strain clones from DT104 DNA. DNA from chloramphenicol-resistant clones was sequenced, and probes specific for the gene

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11

Yokoyama, Eiji, Soichi Maruyama, Hidenori Kabeya, et al. "Prevalence and Genetic Properties of Salmonella enterica Serovar Typhimurium Definitive Phage Type 104 Isolated from Rattus norvegicus and Rattus rattus House Rats in Yokohama City, Japan." Applied and Environmental Microbiology 73, no. 8 (2007): 2624–30. http://dx.doi.org/10.1128/aem.02465-06.

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ABSTRACT Salmonella enterica serovar Typhimurium was isolated from the intestinal contents of Rattus rattus and Rattus norvegicus house rats captured at two buildings, designated buildings J and YS, in Yokohama City, Japan. From October 1997 to September 1998, 52 of 339 (15.3%) house rats were found to carry Salmonella serovar Typhimurium definitive phage type 104 (DT104). In building J, 26 of 161 (16.1%) house rats carried DT104 over the 1-year study period, compared to 26 of 178 (14.6%) rats in building YS. The isolation rates of DT104 from R. rattus and R. norvegicus were similar in the two

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12

Briggs, Connie E., and Pina M. Fratamico. "Molecular Characterization of an Antibiotic Resistance Gene Cluster of Salmonella typhimuriumDT104." Antimicrobial Agents and Chemotherapy 43, no. 4 (1999): 846–49. http://dx.doi.org/10.1128/aac.43.4.846.

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ABSTRACT Salmonella typhimurium phage type DT104 has become an important emerging pathogen. Isolates of this phage type often possess resistance to ampicillin, chloramphenicol, streptomycin, sulfonamides, and tetracycline (ACSSuT resistance). The mechanism by which DT104 has accumulated resistance genes is of interest, since these genes interfere with treatment of DT104 infections and might be horizontally transferred to other bacteria, even to unrelated organisms. Previously, several laboratories have shown that the antibiotic resistance genes of DT104 are chromosomally encoded and involve in

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13

Rasmussen, Mark A., Steve A. Carlson, Sharon K. Franklin, Zoe P. McCuddin, Max T. Wu, and Vijay K. Sharma. "Exposure to Rumen Protozoa Leads to Enhancement of Pathogenicity of and Invasion by Multiple-Antibiotic-Resistant Salmonella enterica Bearing SGI1." Infection and Immunity 73, no. 8 (2005): 4668–75. http://dx.doi.org/10.1128/iai.73.8.4668-4675.2005.

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ABSTRACT Multiple-antibiotic-resistant Salmonella enterica serotype Typhimurium is a food-borne pathogen that has been purported to be more virulent than antibiotic-sensitive counterparts. The paradigm for this multiresistant/hyperpathogenic phenotype is Salmonella enterica serotype Typhimurium phage type DT104 (DT104). The basis for the multiresistance in DT104 is related to an integron structure designated SGI1, but factors underlying hyperpathogenicity have not been completely identified. Since protozoa have been implicated in the alteration of virulence in Legionella and Mycobacterium spp.

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14

Hermans, Armand P. H. M., Tjakko Abee, Marcel H. Zwietering, and Henk J. M. Aarts. "Identification of Novel Salmonella enterica Serovar Typhimurium DT104-Specific Prophage and Nonprophage Chromosomal Sequences among Serovar Typhimurium Isolates by Genomic Subtractive Hybridization." Applied and Environmental Microbiology 71, no. 9 (2005): 4979–85. http://dx.doi.org/10.1128/aem.71.9.4979-4985.2005.

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ABSTRACT Genomic subtractive hybridization was performed between Salmonella enterica serovar Typhimurium LT2 and DT104 to search for novel Salmonella serovar Typhimurium DT104-specific sequences. The subtraction resulted mainly in the isolation of DNA fragments with sequence similarity to phages. Two fragments identified were associated with possible virulence factors. One fragment was identical to irsA of Salmonella serovar Typhimurium ATCC 14028, which is suggested to be involved in macrophage survival. The other fragment was homologous to HldD, an Escherichia coli O157:H7 lipopolysaccharide

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15

Daly, M., and S. Fanning. "Characterization and Chromosomal Mapping of Antimicrobial Resistance Genes in Salmonella enterica Serotype Typhimurium." Applied and Environmental Microbiology 66, no. 11 (2000): 4842–48. http://dx.doi.org/10.1128/aem.66.11.4842-4848.2000.

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ABSTRACT Two hundred and twenty-six Salmonella enterica serotype Typhimurium isolates were examined for the presence of integron-associated gene cassettes. All but two of the non-DT104 isolates, together with DT104 isolates, contained gene cassettes. Amplicons of 1.5 kbp each were found in two non-DT104 isolates, encoding a dhfrI gene (trimethoprim resistance) linked to an aadA gene (streptomycin and spectinomycin resistance), by site-specific recombination. DT104 isolates of resistance (R) type ACSSuT possessed the recently described 1.0- and 1.2-kbp gene cassettes. Macrorestriction analysis

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16

Allen, Chris A., Paula J. Fedorka-Cray, Andrés Vazquez-Torres, et al. "In Vitro and In Vivo Assessment of Salmonella enterica Serovar Typhimurium DT104 Virulence." Infection and Immunity 69, no. 7 (2001): 4673–77. http://dx.doi.org/10.1128/iai.69.7.4673-4677.2001.

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ABSTRACT Multidrug-resistant Salmonella enterica serovar Typhimurium phage type DT104 has become a widespread cause of human and other animal infection worldwide. The severity of clinical illness inS. enterica serovar Typhimurium DT104 outbreaks has led to the suggestion that this strain possesses enhanced virulence. In the present study, in vitro and in vivo virulence-associated phenotypes of several clinical isolates of S. enterica serovar Typhimurium DT104 were examined and compared to S. entericaserovar Typhimurium ATCC 14028s. The ability of these DT104 isolates to survive within murine p

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17

Pritchett, Lori C., Michael E. Konkel, John M. Gay, and Thomas E. Besser. "Identification of DT104 and U302 Phage Types amongSalmonella enterica Serotype Typhimurium Isolates by PCR." Journal of Clinical Microbiology 38, no. 9 (2000): 3484–88. http://dx.doi.org/10.1128/jcm.38.9.3484-3488.2000.

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A DNA sequence was identified in isolates of Salmonella enterica serotype Typhimurium definitive type 104 (DT104). The PCR amplification of an internal segment of this sequence identified DT104 and the closely related U302 phage type among 146 isolates ofS. enterica serotype Typhimurium tested, thus providing a tool for rapid identification of DT104 and related isolates.

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Leekitcharoenphon, Pimlapas, Rene S. Hendriksen, Simon Le Hello, et al. "Global Genomic Epidemiology of Salmonella enterica Serovar Typhimurium DT104." Applied and Environmental Microbiology 82, no. 8 (2016): 2516–26. http://dx.doi.org/10.1128/aem.03821-15.

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ABSTRACTIt has been 30 years since the initial emergence and subsequent rapid global spread of multidrug-resistantSalmonella entericaserovar Typhimurium DT104 (MDR DT104). Nonetheless, its origin and transmission route have never been revealed. We used whole-genome sequencing (WGS) and temporally structured sequence analysis within a Bayesian framework to reconstruct temporal and spatial phylogenetic trees and estimate the rates of mutation and divergence times of 315S. Typhimurium DT104 isolates sampled from 1969 to 2012 from 21 countries on six continents. DT104 was estimated to have emerged

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Liu, Yanhong, Fangyuan Zhang, Jabari L. Hawkins, et al. "Comparative Gene Expression Analysis of Salmonella Typhimurium DT104 in Ground Chicken Extract and Brain Heart Infusion Broth." Microorganisms 12, no. 7 (2024): 1461. http://dx.doi.org/10.3390/microorganisms12071461.

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Salmonella enterica Typhimurium DT104 (S. Typhimurium DT104) is an important foodborne pathogen that is associated with poultry and poultry products. Currently, there is very little information on the underlying molecular mechanisms that allow DT104 to survive and propagate in poultry meat and the poultry processing environment. The current study assessed the global gene expression of DT104 in ground chicken extract (GCE) compared to brain heart infusion (BHI) medium using RNA-Seq technology. DT104 was grown to the early stationary phase (ESP), inoculated into GCE or BHI, and then re-grown to

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RAJASHEKARA, G., E. HAVERLY, D. A. HALVORSON, K. E. FERRIS, D. C. LAUER, and K. V. NAGARAJA. "Multidrug-Resistant Salmonella Typhimurium DT104 in Poultry." Journal of Food Protection 63, no. 2 (2000): 155–61. http://dx.doi.org/10.4315/0362-028x-63.2.155.

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Salmonella Typhimurium isolates from feed ingredients or poultry sources isolated during 1995 to 1997 from different geographical locations within Minnesota were examined for the presence of Salmonella Typhimurium definitive type 104 (DT104). Antibiotic susceptibility studies indicated that 15 of 50 isolates of Salmonella Typhimurium had an antibiotic resistance pattern (ampicillin, chloramphenicol, streptomycin, sulfonamides, and tetracycline) that is usually observed with multidrug-resistant Salmonella Typhimurium DT104. Of the 15 isolates showing the antibiotic resistance pattern, 8 isolate

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Nógrády, Noémi, I. Gadó, Judit Pászti, and Margit Király. "Analysis of gene cassettes of streptomycin-spectinomycin resistance of Hungarian Salmonella enterica serotype Typhimurium strains." Acta Veterinaria Hungarica 51, no. 2 (2003): 137–51. http://dx.doi.org/10.1556/avet.51.2003.2.2.

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By PCR using the ant(3”)-Ia primer pair the aadA gene was detected in 34 streptomycin- and spectinomycin-resistant Salmonella enterica serotype Typhimurium strains. Out of them 12 belonged to DT104 and 22 to non-DT104 phage type. Using different primer combinations it was demonstrated that this gene was integron-associated in all cases: in the DT104 strains it was generally contained by a 1 kb integron while in the majority of the non-DT104 strains by a 2.05 kb (less often by a 1.9 or 1 kb) integron. In the case of integrons carrying multiple cassettes the cassette containing the aadA gene was

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Mulaw, Guesh, Diriba Muleta, Anteneh Tesfaye, and Tesfaye Sisay. "Protective Effect of Potential Probiotic Strains from Fermented Ethiopian Food against Salmonella Typhimurium DT104 in Mice." International Journal of Microbiology 2020 (April 14, 2020): 1–8. http://dx.doi.org/10.1155/2020/7523629.

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Salmonella is one of the most harmful pathogens responsible for foodborne outbreaks, illnesses and deaths. The aim of this study was to evaluate the effect of potentially probiotic strains against Salmonella Typhimurium DT104 in mice. The compatibility test among the selected potential probiotic strains (Lactobacillus plantarum K132, Lactobacillus paracasei K114 and Lactococcus lactis E124) using the cross-streaking method showed the absence of antagonism. The anti-Salmonella activities of coculture of the isolated potential probiotics in the form of mixed or single culture showed a remarkable

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SKOV, M. N., J. S. ANDERSEN, and D. L. BAGGESEN. "Occurrence and spread of multiresistantSalmonellaTyphimurium DT104 in Danish animal herds investigated by the use of DNA typing and spatio-temporal analysis." Epidemiology and Infection 136, no. 8 (2007): 1124–30. http://dx.doi.org/10.1017/s0950268807009399.

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SUMMARYIn the investigation we report the occurrence and spread of multiresistantSalmonellaTyphimurium phage type (DT) 104 in 174 known Danish animal herds infected between 1996 and 2003. We applied PFGE, plasmid analysis and spatio-temporal analysis for a description of the development and spread of infection among herds. The results showed that in Denmark DT104 are mainly spread by trade of animals; however, horizontal spread of DT104 is also important and the risk of an animal herd becoming infected increased with the proximity in time and space to a DT104-infected herd. Based on these resu

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Threlfall, John, Katie L. Hopkins, and Linda R. Ward. "Diversification inSalmonellaTyphimurium DT104." Emerging Infectious Diseases 11, no. 6 (2005): 980–81. http://dx.doi.org/10.3201/eid1106.050100.

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Zhao, Er-Ying, Hong-Xia Bao, Le Tang, et al. "Genomic comparison of Salmonella typhimurium DT104 with non-DT104 strains." Molecular Genetics and Genomics 288, no. 11 (2013): 549–57. http://dx.doi.org/10.1007/s00438-013-0762-8.

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FEDORKA-CRAY, PAULA J., SCOTT R. LADELY, J. STAN BAILEY, and NORMAN J. STERN. "Colonization of Broiler Chicks by Salmonella Typhimurium Definitive Phage Type 104." Journal of Food Protection 64, no. 11 (2001): 1698–704. http://dx.doi.org/10.4315/0362-028x-64.11.1698.

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The prevalence of an antibiotic-resistant strain of Salmonella Typhimurium definitive phage type 104 (DT104) has increased dramatically in recent years resulting in increased morbidity and mortality in both animals and humans. Colonization and shedding of Salmonella Typhimurium DT104 was studied in broiler chickens in two trials. In trial 1, 180 day-of-hatch chicks (n = 60 per group, n = 30 per replicate) were challenged with 106 CFU DT104 (wild-type isolate from poultry) or were commingled with a seeder chick challenged with 106 CFU DT104. In trial 2, 360 day-of-hatch chicks (n = 120 per trea

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Carattoli, Alessandra, Emma Filetici, Laura Villa, Anna Maria Dionisi, Antonia Ricci, and Ida Luzzi. "Antibiotic Resistance Genes and Salmonella Genomic Island 1 in Salmonella enterica Serovar Typhimurium Isolated in Italy." Antimicrobial Agents and Chemotherapy 46, no. 9 (2002): 2821–28. http://dx.doi.org/10.1128/aac.46.9.2821-2828.2002.

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ABSTRACT Fifty-four epidemiologically unrelated multidrug-resistant Salmonella enterica serovar Typhimurium isolates, collected between 1992 and 2000 in Italy, were analyzed for the presence of integrons. Strains were also tested for Salmonella genomic island 1 (SGI1), carrying antibiotic resistance genes in DT104 strains. A complete SGI1 was found in the majority of the DT104 strains. Two DT104 strains, showing resistance to streptomycin-spectinomycin and sulfonamides, carried a partially deleted SGI1 lacking the flost , tetR, and tetA genes, conferring chloramphenicol-florfenicol and tetracy

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ZHENG, RUISHENG, TONG ZHAO, YEN-CON HUNG, and KOUSHIK ADHIKARI. "Evaluation of Bactericidal Effects of Phenyllactic Acid on Escherichia coli O157:H7 and Salmonella Typhimurium on Beef Meat." Journal of Food Protection 82, no. 12 (2019): 2016–22. http://dx.doi.org/10.4315/0362-028x.jfp-19-217.

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ABSTRACT Bactericidal effects of various concentrations of phenyllactic acid on Shiga toxin–producing Escherichia coli (STEC), including E. coli O157:H7, O26:H11, O103:H2, and O121:H19, and on Salmonella Typhimurium DT104 in pure culture and microplates assays were studied. Beef cuts were surface sprayed with phenyllactic acid or lactic acid for inactivation of E. coli O157:H7 and Salmonella Typhimurium. The 1.5% phenyllactic acid inactivated all inoculated E. coli O157:H7, O26:H11, O103:H2, and O121:H19 and Salmonella Typhimurium DT104 (&gt;6-log reduction) within 1 min of contact at 21°C

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Cooke, Fiona J., Derek J. Brown, Maria Fookes, et al. "Characterization of the Genomes of a Diverse Collection of Salmonella enterica Serovar Typhimurium Definitive Phage Type 104." Journal of Bacteriology 190, no. 24 (2008): 8155–62. http://dx.doi.org/10.1128/jb.00636-08.

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ABSTRACT Salmonella enterica serovar Typhimurium definitive phage type 104 (DT104) has caused significant morbidity and mortality in humans and animals for almost three decades. We completed the full DNA sequence of one DT104 strain, NCTC13348, and showed that significant differences between the genome of this isolate and the genome of the previously sequenced strain Salmonella serovar Typhimurium LT2 are due to integrated prophage elements and Salmonella genomic island 1 encoding antibiotic resistance genes. Thirteen isolates of Salmonella serovar Typhimurium DT104 with different pulsed-field

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Humphrey, Suzanne, Leann F. Clark, Tom J. Humphrey, and Mark A. Jepson. "Enhanced recovery of Salmonella Typhimurium DT104 from exposure to stress at low temperature." Microbiology 157, no. 4 (2011): 1103–14. http://dx.doi.org/10.1099/mic.0.045666-0.

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Salmonella enterica serovar Typhimurium (S. Typhimurium) remains an important cause of food-borne infection in the developed world. In order to establish infection within a host, Salmonella must survive and recover from a range of environmental stresses. S. Typhimurium strain SL1344 is among the most extensively studied pathogenic Salmonella strains, while S. Typhimurium phage type DT104 is an important type that has been associated with pandemic spread and a high number of food-borne disease outbreaks over the last two decades. In this study, we have compared the abilities of these two S. Typ

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Carlson, Steve A., Vijay K. Sharma, Zoe P. McCuddin, Mark A. Rasmussen, and Sharon K. Franklin. "Involvement of a Salmonella Genomic Island 1 Gene in the Rumen Protozoan-Mediated Enhancement of Invasion for Multiple-Antibiotic-Resistant Salmonella enterica Serovar Typhimurium." Infection and Immunity 75, no. 2 (2006): 792–800. http://dx.doi.org/10.1128/iai.00679-06.

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ABSTRACT Multiple-antibiotic-resistant Salmonella enterica serotype Typhimurium is a food-borne pathogen that may be more virulent than related strains lacking the multiresistance phenotype. Salmonella enterica serotype Typhimurium phage type DT104 is the most prevalent of these multiresistant/hypervirulent strains. Multiresistance in DT104 is conferred by an integron structure, designated Salmonella genomic island 1 (SGI1), while we recently demonstrated DT104 hyperinvasion mediated by rumen protozoa (RPz) that are normal flora of cattle. Hyperinvasion was also observed in other Salmonella st

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Saitoh, Mariko, Kiyoshi Tanaka, Kei Nishimori, et al. "The artAB genes encode a putative ADP-ribosyltransferase toxin homologue associated with Salmonella enterica serovar Typhimurium DT104." Microbiology 151, no. 9 (2005): 3089–96. http://dx.doi.org/10.1099/mic.0.27933-0.

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Many bacterial pathogens encode ADP-ribosyltransferase toxins. The authors identified an ADP-ribosyltransferase toxin homologue (ArtA, ArtB) in Salmonella enterica serovar Typhimurium (S. typhimurium) DT104. ArtA is most homologous to a putative pertussis-like toxin subunit present in Salmonella typhi (STY1890) and Salmonella paratyphi A (SPA1609), while ArtB shows homology to a hypothetical periplasmic protein of S. typhi (STY1364) and S. paratyphi A (SPA1188), and a putative pertussis-like toxin subunit in S. typhi (STY1891) and S. paratyphi A (SPA1610). The artA gene was detected from the p

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WASYL, D., D. SANDVANG, M. N. SKOV, and D. L. BAGGESEN. "Epidemiological characteristics ofSalmonellaTyphimurium isolated from animals and feed in Poland." Epidemiology and Infection 134, no. 1 (2005): 179–85. http://dx.doi.org/10.1017/s0950268805004838.

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SUMMARYFifty-sevenSalmonellaTyphimurium strains isolated from poultry, swine and animal feed in Poland during the years 1979–1998 and 2000–2002 were analysed with conventional and molecular techniques. Antimicrobial resistance as well as multiresistance was found, respectively, in 80·1% and 56·1% of the isolates and most frequently among isolates from 2000–2002. Of several phage types noted, DT104 was prevalent among poultry, swine and feed isolates. DT104, U302 and non-typable strains had a multiple resistant profile (ACSSuT) due to the presence of class I integrons. Pulse-field gel electroph

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Olliver, Anne, Michel Vallé, Elisabeth Chaslus-Dancla, and Axel Cloeckaert. "Overexpression of the Multidrug Efflux Operon acrEF by Insertional Activation with IS1 or IS10 Elements in Salmonella enterica Serovar Typhimurium DT204 acrB Mutants Selected with Fluoroquinolones." Antimicrobial Agents and Chemotherapy 49, no. 1 (2005): 289–301. http://dx.doi.org/10.1128/aac.49.1.289-301.2005.

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ABSTRACT High-level fluoroquinolone (FQ) resistance in Salmonella enterica serovar Typhimurium phage type DT204 has been previously shown to be essentially due to both multiple target gene mutations and active efflux by the AcrAB-TolC efflux system. In this study we show that in intermediatly resistant acrB-inactivated serovar Typhimurium DT204 mutants, high-level resistance to FQs can be restored on in vitro selection with FQs. In each FQ- resistant mutant selected from serovar Typhimurium DT204 acrB mutant strains, an insertion sequence (IS1 or IS10) was found integrated upstream of the acrE

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Cawthorne, Amy, Pasquale Galetta, Marco Massari, Anna Maria Dionisi, Emma Filetici, and Ida Luzzi. "Salmonella Typhimurium DT104, Italy." Emerging Infectious Diseases 12, no. 8 (2006): 1289. http://dx.doi.org/10.3201/eid1708.050968.

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Martinez-Urtaza, Jaime, Ernesto Liebana, Lourdes Garcia-Migura, Pelayo Perez-Piñeiro, and Montserrat Saco. "Characterization of Salmonella enterica Serovar Typhimurium from Marine Environments in Coastal Waters of Galicia (Spain)." Applied and Environmental Microbiology 70, no. 7 (2004): 4030–34. http://dx.doi.org/10.1128/aem.70.7.4030-4034.2004.

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ABSTRACT Twenty-three Salmonella enterica serovar Typhimurium isolates from marine environments were characterized by phage typing, pulsed-field gel electrophoresis (PFGE) analysis, plasmid analysis, and antibiotic resistance, and the distribution of the different types in the coastal waters were subsequently analyzed. Five phage types were identified among the isolates (PT41, PT135, PT99, DT104, and DT193). PT135 isolates were exclusively detected during the winter months from 1998 to 2000, whereas DT104 and PT41 isolates were detected exclusively in the summer months from 2000 to 2002. XbaI

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Cloeckaert, Axel, Sylvie Baucheron, Geraldine Flaujac, et al. "Plasmid-Mediated Florfenicol Resistance Encoded by the floR Gene in Escherichia coli Isolated from Cattle." Antimicrobial Agents and Chemotherapy 44, no. 10 (2000): 2858–60. http://dx.doi.org/10.1128/aac.44.10.2858-2860.2000.

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ABSTRACT A florfenicol resistance gene almost identical to floRof Salmonella enterica serovar Typhimurium DT104 was detected on 110- to 125-kb plasmids in Escherichia coliisolates of animal origin. Analysis of the floR gene flanking regions of one of the plasmids showed that they were different from those encountered in S. enterica serovar Typhimurium DT104.

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Szabó, István, Lothar H. Wieler, Karsten Tedin, et al. "Influence of a Probiotic Strain of Enterococcus faecium on Salmonella enterica Serovar Typhimurium DT104 Infection in a Porcine Animal Infection Model." Applied and Environmental Microbiology 75, no. 9 (2009): 2621–28. http://dx.doi.org/10.1128/aem.01515-08.

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ABSTRACT The beneficial effects of probiotic Enterococcus spp. in different hosts, such as mice and humans, have previously been reported in several studies. However, studies of large domestic animals, as well as challenge studies with pathogenic microorganisms, are very rare. Here, we investigated the influence of oral treatment of pigs with the probiotic bacterium Enterococcus faecium NCIMB 10415 on Salmonella enterica serovar Typhimurium DT104 infections in weaning piglets. Clinical symptoms, fecal excretion, the organ distribution of Salmonella, and the humoral immune response (immunoglobu

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Alvseike, O., T. Leegaard, P. Aavitsland, and J. Lassen. "Trend of multiple drug resistant Salmonella Typhimurium in Norway." Eurosurveillance 7, no. 1 (2002): 5–7. http://dx.doi.org/10.2807/esm.07.01.00352-en.

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This article reports the trend of multidrug resistant Salmonella Typhimurium isolated from humans in Norway from 1998 to 2000. Most of the incidents with multiple resistant S. Typhimurium infection contracted in Norway have been DT104. We should therefore expect an increase of both primary and secondary infections if strains such as phage type DT104 with R-type ACSSuT become endemic.

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ANDERSON, ROBIN C., SANDRA A. BUCKLEY, LEON F. KUBENA, LARRY H. STANKER, ROGER B. HARVEY, and DAVID J. NISBET. "Bactericidal Effect of Sodium Chlorate on Escherichia coli O157:H7 and Salmonella Typhimurium DT104 in Rumen Contents In Vitro." Journal of Food Protection 63, no. 8 (2000): 1038–42. http://dx.doi.org/10.4315/0362-028x-63.8.1038.

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Escherichia coli O157:H7 and Salmonella Typhimurium DT104 are important foodborne pathogens affecting the beef and dairy industries and strategies are sought to rid these organisms from cattle at slaughter. Both pathogens possess respiratory nitrate reductase that also reduces chlorate to the lethal chlorite ion. Because most anaerobes lack respiratory nitrate reductase, we hypothesized that chlorate may selectively kill E. coli O157:H7 and Salmonella Typhimurium DT104 but not potentially beneficial anaerobes. In support of this hypothesis, we found that concentrations of E. coli O157:H7 and S

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METZER, E., V. AGMON, N. ANDOREN, and D. COHEN. "Emergence of multidrug-resistant Salmonella enterica serotype Typhimurium phage-type DT104 among salmonellae causing enteritis in Israel." Epidemiology and Infection 121, no. 3 (1998): 555–59. http://dx.doi.org/10.1017/s0950268898001526.

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The relative frequency of salmonella strains isolated from hospitalized and non-hospitalized patients in Southern Israel changed during the period, 1994–6. Salmonella enterica serotype Typhimurium definitive phage-type 104 (DT104) appeared in Israel in 1994 and became the most prevalent strain in 1996. An outbreak of enteritis due to Salmonella enterica serotype Agona occurred in Israel, in October 1994 and lasted for 4 months. The relative frequency of Salmonella enterica serotype Enteritidis remained almost constant during these years, with seasonal fluctuations only.The importance of the in

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DOORDUYN, Y., W. E. VAN DEN BRANDHOF, Y. T. H. P. VAN DUYNHOVEN, W. J. B. WANNET, and W. VAN PELT. "Risk factors for Salmonella Enteritidis and Typhimurium (DT104 and non-DT104) infections in The Netherlands: predominant roles for raw eggs in Enteritidis and sandboxes in Typhimurium infections." Epidemiology and Infection 134, no. 3 (2005): 617–26. http://dx.doi.org/10.1017/s0950268805005406.

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Since 1996 Salmonella Typhimurium DT104 salmonellosis has increased in The Netherlands. This prompted a case-control study of risk factors for salmonellosis to inform transmission routes for this phage type. Cases were laboratory-confirmed patients with a Salmonella infection and controls were selected from population registries by frequency matching for age, sex, degree of urbanization and season. Cases and controls received a questionnaire on risk factors. Of the 1171 cases, 573 (49%) responded: 245 S. Enteritidis and 232 S. Typhimurium cases (both DT104 and non-DT104), of which 58 were DT10

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Qin, Lixu, Simon X. Yang, Frank Pollari, et al. "Modelling and risk factor analysis of Salmonella Typhimurium DT104 and non-DT104 infections." Expert Systems with Applications 35, no. 3 (2008): 956–66. http://dx.doi.org/10.1016/j.eswa.2007.08.039.

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Mather, Alison E., Louise Matthews, Dominic J. Mellor, et al. "An ecological approach to assessing the epidemiology of antimicrobial resistance in animal and human populations." Proceedings of the Royal Society B: Biological Sciences 279, no. 1733 (2011): 1630–39. http://dx.doi.org/10.1098/rspb.2011.1975.

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We examined long-term surveillance data on antimicrobial resistance (AMR) in Salmonella Typhimurium DT104 (DT104) isolates from concurrently sampled and sympatric human and animal populations in Scotland. Using novel ecological and epidemiological approaches to examine diversity, and phenotypic and temporal relatedness of the resistance profiles, we assessed the more probable source of resistance of these two populations. The ecological diversity of AMR phenotypes was significantly greater in human isolates than in animal isolates, at the resolution of both sample and population. Of 5200 isola

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DANYLUK, MICHELLE D., TONG ZHAO, and MICHAEL P. DOYLE. "Competitive Inhibition Bacteria of Bovine Origin against Salmonella Serovars." Journal of Food Protection 70, no. 8 (2007): 1804–10. http://dx.doi.org/10.4315/0362-028x-70.8.1804.

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Studies were conducted to isolate bacteria inhibitory to Salmonella enterica serovar Typhimurium definitive type (DT) 104 in vitro from cattle not carrying Salmonella and to determine the inhibitory activity of the isolated bacteria through competitive growth in cattle feces artificially contaminated with Salmonella Typhimurium DT104 and S. enterica serovar Newport. Fecal samples (108) were obtained from dairy and beef cows. S. enterica serovars were isolated from 9.25% of the samples and included Salmonella Newport (4), Salmonella Bareilly (1), Salmonella Mbandaka (1), Salmonella Montevideo (

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Levent, Gizem, Aleksandar Božić, Branko T. Petrujkić та ін. "Assessment of Potential Anti-Methanogenic and Antimicrobial Activity of Ethyl Nitroacetate, α-Lipoic Acid, Taurine and L-Cysteinesulfinic Acid In Vitro". Microorganisms 12, № 1 (2023): 34. http://dx.doi.org/10.3390/microorganisms12010034.

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Livestock producers need new technologies to maintain the optimal health and well-being of their animals while minimizing the risks of propagating and disseminating pathogenic and antimicrobial-resistant bacteria to humans or other animals. Where possible, these interventions should contribute to the efficiency and profitability of animal production to avoid passing costs on to consumers. In this study, we examined the potential of nitroethane, 3-nitro-1-propionate, ethyl nitroacetate, taurine and L-cysteinesulfinic acid to modulate rumen methane production, a digestive inefficiency that resul

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LOW, J. C., M. ANGUS, G. HOPKINS, D. MUNRO, and S. C. RANKIN. "Antimicrobial resistance of Salmonella enterica Typhimurium DT104 isolates and investigation of strains with transferable apramycin resistance." Epidemiology and Infection 118, no. 2 (1997): 97–103. http://dx.doi.org/10.1017/s0950268896007339.

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An examination of salmonella isolates collected by the Scottish Agricultural College Veterinary Services Division from April 1994 to May 1995 was conducted to determine the extent to which Salmonella enterica serotype Typhimurium phage type 104 (DT104) occurred and to investigate the antimicrobial resistance patterns of isolates. Typhimurium DT104 was the predominant salmonella and was isolated from nine species of animal. All isolates of this phage type possessed resistance to at least one antimicrobial and 98% of the isolates were resistant to multiple antimicrobials with R-type ACTSp the pr

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Helms, Morten, Steen Ethelberg, and Kåre Mølbak. "InternationalSalmonellaTyphimurium DT104 Infections, 1992–2001." Emerging Infectious Diseases 11, no. 6 (2005): 859–67. http://dx.doi.org/10.3201/eid1106.041017.

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KIM, SHIN-HEE, and CHENG-I. WEI. "Biofilm Formation by Multidrug-Resistant Salmonella enterica Serotype Typhimurium Phage Type DT104 and Other Pathogens." Journal of Food Protection 70, no. 1 (2007): 22–29. http://dx.doi.org/10.4315/0362-028x-70.1.22.

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The biofilm-forming capability of Salmonella enterica serotypes Typhimurium and Heidelberg, Pseudomonas aeruginosa, Listeria monocytogenes, Escherichia coli O157:H7, Klebsiella pneumoniae, and Acinetobacter baumannii isolated from humans, animal farms, and retail meat products was evaluated by using a microplate assay. The tested bacterial species showed interstrain variation in their capabilities to form biofilms. Strong biofilm-forming strains of S. enterica serotypes, E. coli O157: H7, P. aeruginosa, K. pneumoniae, and A. baumannii were resistant to at least four of the tested antibiotics.

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Helm, Julie D., Raymond K. Hines, Joseph E. Hill, and John A. Caver. "Multiple Drug-Resistant Salmonella typhimurium DT104 and DT104b Isolated in Bobwhite Quail (Colinus virginianus)." Avian Diseases 43, no. 4 (1999): 788. http://dx.doi.org/10.2307/1592750.

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