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antibiotic resistance

  • Reduced Antibacterial Drug Resistance and <em>bla</em><sub>CTX-M</sub> β-Lactamase Gene Carriage in Cattle-Associated <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> at Low Temperatures, at Sites Dominated by Older Animals, and on Pastureland: Implications for Surveillance
    Public and Environmental Health Microbiology
    Reduced Antibacterial Drug Resistance and blaCTX-M β-Lactamase Gene Carriage in Cattle-Associated Escherichia coli at Low Temperatures, at Sites Dominated by Older Animals, and on Pastureland: Implications for Surveillance

    Antibacterial resistance poses a significant threat to human and animal health and global food security. Surveillance for resistance on farms is important for many reasons, including tracking impacts of interventions aimed at reducing the prevalence of resistance.

    Hannah Schubert, Katy Morley, Emma F. Puddy, Robert Arbon, Jacqueline Findlay, Oliver Mounsey, Virginia C. Gould, Lucy Vass, Madeleine Evans, Gwen M. Rees, David C. Barrett, Katy M. Turner, Tristan A. Cogan, Matthew B. Avison, Kristen K. Reyher
  • The Small RNAs PA2952.1 and PrrH as Regulators of Virulence, Motility, and Iron Metabolism in <span class="named-content genus-species" id="named-content-1">Pseudomonas aeruginosa</span>
    Genetics and Molecular Biology
    The Small RNAs PA2952.1 and PrrH as Regulators of Virulence, Motility, and Iron Metabolism in Pseudomonas aeruginosa

    Due to the rising incidence of multidrug-resistant (MDR) strains and the difficulty of eliminating P. aeruginosa infections, it is important to understand the regulatory mechanisms that allow this bacterium to adapt to and thrive under a variety of conditions. Small RNAs (sRNAs) are one regulatory mechanism that allows bacteria to change the amount of protein...

    Shannon R. Coleman, Manjeet Bains, Maren L. Smith, Victor Spicer, Ying Lao, Patrick K. Taylor, Neeloffer Mookherjee, Robert E. W. Hancock
  • Molecular Epidemiology of <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Producing CTX-M and pAmpC β-Lactamases from Dairy Farms Identifies a Dominant Plasmid Encoding CTX-M-32 but No Evidence for Transmission to Humans in the Same Geographical Region
    Public and Environmental Health Microbiology
    Molecular Epidemiology of Escherichia coli Producing CTX-M and pAmpC β-Lactamases from Dairy Farms Identifies a Dominant Plasmid Encoding CTX-M-32 but No Evidence for Transmission to Humans in the Same Geographical Region

    Third-generation cephalosporins (3GCs) are critically important antibacterials, and 3GC resistance (3GC-R) threatens human health, particularly in the context of opportunistic pathogens such as Escherichia coli. There is some evidence for zoonotic transmission of 3GC-R E. coli through food, but...

    Jacqueline Findlay, Oliver Mounsey, Winnie W. Y. Lee, Nerissa Newbold, Katy Morley, Hannah Schubert, Virginia C. Gould, Tristan A. Cogan, Kristen K. Reyher, Matthew B. Avison
  • Open Access
    Carriage of Extended-Spectrum-Beta-Lactamase- and AmpC Beta-Lactamase-Producing <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Strains from Humans and Pets in the Same Households
    Public and Environmental Health Microbiology
    Carriage of Extended-Spectrum-Beta-Lactamase- and AmpC Beta-Lactamase-Producing Escherichia coli Strains from Humans and Pets in the Same Households

    Enterobacteriaceae that produce extended-spectrum beta-lactamases (ESBLs) and AmpC beta-lactamases (ACBLs) are important pathogens and can cause community-acquired illnesses, such as urinary tract infections (UTIs). Fecal carriage of these resistant bacteria by companion animals may pose a risk for transmission to humans. Our work evaluated the sharing of ESBL- and ACBL-producing...

    Leah J. Toombs-Ruane, Jackie Benschop, Nigel P. French, Patrick J. Biggs, Anne C. Midwinter, Jonathan C. Marshall, Maggie Chan, Dragana Drinković, Ahmed Fayaz, Michael G. Baker, Jeroen Douwes, Mick G. Roberts, Sara A. Burgess
  • Open Access
    The Household Resistome: Frequency of β-Lactamases, Class 1 Integrons, and Antibiotic-Resistant Bacteria in the Domestic Environment and Their Reduction during Automated Dishwashing and Laundering
    Public and Environmental Health Microbiology | Spotlight
    The Household Resistome: Frequency of β-Lactamases, Class 1 Integrons, and Antibiotic-Resistant Bacteria in the Domestic Environment and Their Reduction during Automated Dishwashing and Laundering

    The abundance of antibiotic-resistant bacteria and ARGs is steadily increasing and has been comprehensively analyzed in natural environments, animals, foods, and wastewater treatment plants. In this respect, β-lactams and colistin are of particular interest due to the emergence of multidrug-resistant Gram-negative bacteria. Despite the connection of private households to these environments, only a few studies have focused on the...

    Laura Schages, Ralf Lucassen, Florian Wichern, Rainer Kalscheuer, Dirk Bockmühl
  • Open Access
    Antibacterial and Antivirulence Activity of Manuka Honey against Genetically Diverse <span class="named-content genus-species" id="named-content-1">Staphylococcus pseudintermedius</span> Strains
    Public and Environmental Health Microbiology
    Antibacterial and Antivirulence Activity of Manuka Honey against Genetically Diverse Staphylococcus pseudintermedius Strains

    Staphylococcus pseudintermedius is an important member of the skin microbial community in animals and can cause opportunistic infections in both pets and their owners. The high incidence of antimicrobial resistance in S. pseudintermedius highlights that this opportunistic zoonotic pathogen can cause...

    Helen L. Brown, Georgie Metters, Matthew D. Hitchings, Thomas S. Wilkinson, Luis Sousa, Jenna Cooper, Harry Dance, Robert J. Atterbury, Rowena Jenkins
  • Lysin LysMK34 of <em>Acinetobacter baumannii</em> Bacteriophage PMK34 Has a Turgor Pressure-Dependent Intrinsic Antibacterial Activity and Reverts Colistin Resistance
    Enzymology and Protein Engineering
    Lysin LysMK34 of Acinetobacter baumannii Bacteriophage PMK34 Has a Turgor Pressure-Dependent Intrinsic Antibacterial Activity and Reverts Colistin Resistance

    A. baumannii is one of the most challenging pathogens for which development of new and effective antimicrobials is urgently needed. Colistin is a last-resort antibiotic, and even colistin-resistant A. baumannii strains exist. Here, we present a lysin that sensitizes...

    Karim Abdelkader, Diana Gutiérrez, Dennis Grimon, Patricia Ruas-Madiedo, Cédric Lood, Rob Lavigne, Amal Safaan, Ahmed S. Khairalla, Yasser Gaber, Tarek Dishisha, Yves Briers
  • Metagenomics as a Public Health Risk Assessment Tool in a Study of Natural Creek Sediments Influenced by Agricultural and Livestock Runoff: Potential and Limitations
    Public and Environmental Health Microbiology
    Metagenomics as a Public Health Risk Assessment Tool in a Study of Natural Creek Sediments Influenced by Agricultural and Livestock Runoff: Potential and Limitations

    Current agricultural and livestock practices contribute to fecal contamination in the environment and the spread of food- and waterborne disease and antibiotic resistance genes (ARGs). Traditionally, the level of pollution and risk to public health are assessed by culture-based tests for the intestinal bacterium Escherichia coli. However, the accuracy of these...

    Brittany Suttner, Eric R. Johnston, Luis H. Orellana, Luis M. Rodriguez-R, Janet K. Hatt, Diana Carychao, Michelle Q. Carter, Michael B. Cooley, Konstantinos T. Konstantinidis
  • Microbial Community Distribution and Core Microbiome in Successive Wound Grades of Individuals with Diabetic Foot Ulcers
    Public and Environmental Health Microbiology | Spotlight
    Microbial Community Distribution and Core Microbiome in Successive Wound Grades of Individuals with Diabetic Foot Ulcers

    Chronic nonhealing diabetic foot ulcers (DFUs) are a serious complication of diabetes and are further exacerbated by bacterial colonization. The microbial burden in the wound of each individual displays diverse morphological and physiological characteristics with unique patterns of host-pathogen interactions, antibiotic resistance, and virulence. Treatment involves empirical decisions until definitive results on the causative wound...

    Apoorva Jnana, Vigneshwaran Muthuraman, Vinay Koshy Varghese, Sanjiban Chakrabarty, Thokur Sreepathy Murali, Lingadakai Ramachandra, Kallya Rajgopal Shenoy, Gabriel Sunil Rodrigues, Seetharam Shiva Prasad, Dhananjaya Dendukuri, Andreas Morschhauser, Joerg Nestler, Harald Peter, Frank F. Bier, Kapaettu Satyamoorthy
  • A Comprehensive Account of <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Sequence Type 131 in Wastewater Reveals an Abundance of Fluoroquinolone-Resistant Clade A Strains
    Environmental Microbiology
    A Comprehensive Account of Escherichia coli Sequence Type 131 in Wastewater Reveals an Abundance of Fluoroquinolone-Resistant Clade A Strains

    ST131 is a global pathogen. This clone causes urinary tract infections and is frequently isolated from human sources. However, little is known about ST131 from environmental sources. With the widely reported increase in antibiotic concentrations found in wastewater, there is additional selection pressure for the emergence of antibiotic-resistant ST131 in this niche. The unbiased screening approach reported herein revealed that...

    Thomas J. Finn, Lena Scriver, Linh Lam, Mai Duong, Gisele Peirano, Tarah Lynch, Tao Dong, Johann D. D. Pitout, Rebekah DeVinney

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Print ISSN: 0099-2240; Online ISSN: 1098-5336