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Trees E, Carleton HA, Folster JP, Gieraltowski L, Hise K, Leeper M, Nguyen TA, Poates A, Sabol A, Tagg KA, Tolar B, Vasser M, Webb HE, Wise M, Lindsey RL. Genetic Diversity in Salmonella enterica in Outbreaks of Foodborne and Zoonotic Origin in the USA in 2006-2017. Microorganisms 2024; 12:1563. [PMID: 39203405 PMCID: PMC11356229 DOI: 10.3390/microorganisms12081563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/23/2024] [Accepted: 07/26/2024] [Indexed: 09/03/2024] Open
Abstract
Whole genome sequencing is replacing traditional laboratory surveillance methods as the primary tool to track and characterize clusters and outbreaks of the foodborne and zoonotic pathogen Salmonella enterica (S. enterica). In this study, 438 S. enterica isolates representing 35 serovars and 13 broad vehicle categories from one hundred epidemiologically confirmed outbreaks were evaluated for genetic variation to develop epidemiologically relevant interpretation guidelines for Salmonella disease cluster detection. The Illumina sequences were analyzed by core genome multi-locus sequence typing (cgMLST) and screened for antimicrobial resistance (AR) determinants and plasmids. Ninety-three of the one hundred outbreaks exhibited a close allele range (less than 10 allele differences with a subset closer than 5). The remaining seven outbreaks showed increased variation, of which three were considered polyclonal. A total of 16 and 28 outbreaks, respectively, showed variations in the AR and plasmid profiles. The serovars Newport and I 4,[5],12:i:-, as well as the zoonotic and poultry product vehicles, were overrepresented among the outbreaks, showing increased variation. A close allele range in cgMLST profiles can be considered a reliable proxy for epidemiological relatedness for the vast majority of S. enterica outbreak investigations. Variations associated with mobile elements happen relatively frequently during outbreaks and could be reflective of changing selective pressures.
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Affiliation(s)
- Eija Trees
- Association of Public Health Laboratories, Bethesda, MD 20814, USA
| | | | - Jason P. Folster
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | | | - Kelley Hise
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Molly Leeper
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Thai-An Nguyen
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Angela Poates
- Association of Public Health Laboratories, Bethesda, MD 20814, USA
| | - Ashley Sabol
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Kaitlin A. Tagg
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Beth Tolar
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Michael Vasser
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Hattie E. Webb
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Matthew Wise
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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Hoepers PG, Nunes PLF, Almeida-Souza HO, Martins MM, Carvalho RDDO, Dreyer CT, Aburjaile FF, Sommerfeld S, Azevedo V, Fonseca BB. Harnessing probiotics capability to combat Salmonella Heidelberg and improve intestinal health in broilers. Poult Sci 2024; 103:103739. [PMID: 38678973 PMCID: PMC11060954 DOI: 10.1016/j.psj.2024.103739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 05/01/2024] Open
Abstract
The poultry industry faces significant challenges in controlling Salmonella contamination while reducing antibiotic use, particularly with the emergence of Salmonella Heidelberg (SH) strains posing risks to food safety and public health. Probiotics, notably lactic acid bacteria (LAB) and Saccharomyces boulardii (SB) offer promising alternatives for mitigating Salmonella colonization in broilers. Understanding the efficacy of probiotics in combating SH and their impact on gut health and metabolism is crucial for improving poultry production practices and ensuring food safety standards. This study aimed to assess the inhibitory effects of LAB and SB against SH both in vitro and in vivo broilers, while also investigating their impact on fecal metabolites and caecal microbiome composition. In vitro analysis demonstrated strong inhibition of SH by certain probiotic strains, such as Lactiplantibacillus plantarum (LP) and Lacticaseibacillus acidophilus (LA), while others like SB and Lactobacillus delbrueckii (LD) did not exhibit significant inhibition. In vivo testing revealed that broilers receiving probiotics had significantly lower SH concentrations in cecal content compared to the positive control (PC) at all ages, indicating a protective effect of probiotics against SH colonization. Metagenomic analysis of cecal-content microbiota identified predominant bacterial families and genera, highlighting changes in microbiota composition with age and probiotic supplementation. Additionally, fecal metabolomics profiling showed alterations in metabolite concentrations, suggesting reduced oxidative stress, intestinal inflammation, and improved gut health in probiotic-supplemented birds. These findings underscore the potential of probiotics to mitigate SH colonization and improve broiler health while reducing reliance on antibiotics.
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Affiliation(s)
| | - Pedro Lucas Figueiredo Nunes
- Graduate Program in Genetics and Biochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
| | - Hebreia Oliveira Almeida-Souza
- Graduate Program in Genetics and Biochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
| | - Mario Machado Martins
- Graduate Program in Genetics and Biochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
| | | | | | | | - Simone Sommerfeld
- Veterinary Medicine College, Federal University of Uberlândia, Uberlândia, Brazil
| | - Vasco Azevedo
- School of Veterinary Medicine and Animal Science, Federal University of Bahia, Salvador, Brazil
| | - Belchiolina Beatriz Fonseca
- Veterinary Medicine College, Federal University of Uberlândia, Uberlândia, Brazil; Graduate Program in Genetics and Biochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
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3
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Qin X, Zhang Z. Emergence of a Hybrid IncI1-Iα Plasmid-Encoded blaCTX-M-101 Conferring Resistance to Cephalosporins in Salmonella enterica Serovar Enteritidis. Microorganisms 2023; 11:1275. [PMID: 37317249 DOI: 10.3390/microorganisms11051275] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/07/2023] [Accepted: 05/10/2023] [Indexed: 06/16/2023] Open
Abstract
The increasing resistance to cephalosporins in Salmonella poses a serious threat to public health. In our previous study, the blaCTX-M-101 gene, a new blaCTX-M variant, was first reported in Salmonella enterica serovar Enteritidis (S. Enteritidis). Here, we further analyzed the genome characterization, transferability, and resistance mechanism of one S. Enteritidis isolate (SJTUF14523) carrying blaCTX-M-101 from an outpatient in 2016 in Xinjiang, China. This strain was a multidrug resistance (MDR) isolate and exhibited resistance to ceftazidime (MIC = 64 μg/mL), cefotaxime (MIC = 256 μg/mL), and cefepime (MIC = 16 μg/mL). Phylogenetic analysis revealed that SJTUF14523 had a close relationship to another S. Enteritidis isolate from the United States. In the presence of plasmid p14523A, there were 8- and 2133-fold increases in the MICs of cephalosporins in Escherichia coli C600 in the conjugation. Gene cloning results indicated that blaCTX-M-101 was the decisive mechanism leading to ceftazidime and cefotaxime resistance that could make the MICs break through the resistance breakpoint. Plasmid sequencing revealed that the blaCTX-M-101 gene was located on an IncI1-Iα transferable plasmid (p14523A) that was 85,862 bp in length. Sequence comparison showed that p14523A was a novel hybrid plasmid that might have resulted from the interaction between a homologous region. Furthermore, we found a composite transposon unit composed of ISEcp1, blaCTX-M-101, and orf477 in p14523A. ISEcp1-mediated transposition was likely to play a key role in the horizontal transfer of blaCTX-M-101 among plasmids in S. Enteritidis. Collectively, these findings underline further challenges in the prevention and control of antibiotic resistance posed by new CTX-M-101-like variants in Salmonella.
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Affiliation(s)
- Xiaojie Qin
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Zengfeng Zhang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
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4
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Alzahrani KO, AL-Reshoodi FM, Alshdokhi EA, Alhamed AS, Al Hadlaq MA, Mujallad MI, Mukhtar LE, Alsufyani AT, Alajlan AA, Al Rashidy MS, Al Dawsari MJ, Al-Akeel SI, AL-Harthi MH, Al Manee AM, Alghoribi MF, Alajel SM. Antimicrobial resistance and genomic characterization of Salmonella enterica isolates from chicken meat. Front Microbiol 2023; 14:1104164. [PMID: 37065154 PMCID: PMC10100587 DOI: 10.3389/fmicb.2023.1104164] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/15/2023] [Indexed: 04/18/2023] Open
Abstract
This study investigated genotypic and phenotypic antimicrobial resistance profiles, phylogenic relatedness, plasmid and virulence composition of 39 Salmonella enterica strains isolated from chicken meat samples using whole genome sequencing (WGS) technology. Four distinct serotypes were identified; Salmonella Minnesota (16/39, 41%), Salmonella Infantis (13/39, 33.3%), Salmonella Enteritidis (9/39, 23.1%), and one isolate was detected for Salmonella Kentucky (1/39, 2.6%), with sequence types (STs) as followed: ST548, ST32, ST11, and ST198, respectively. Phenotypic resistance to tetracycline (91.2%), ampicillin (82.4%), sulfisoxazole (64.7%), and nalidixic acid (61.6%) was the most observed. Resistome analysis revealed the presence of resistance genes to aminoglycosides, β-lactamase, sulfonamides, trimethoprim, phenicol, lincosamide, macrolides, and tetracyclines. Plasmidome showed the presence of eight incompatibility groups, including IncA/C2, IncFIB(K)_1_Kpn3, Col440I_1, IncR, IncX1, IncI1_1_Alpha, IncFIB(S)/IncFII(S), IncHI2/IncHI2A, IncX2 and ColpVC plasmids across the 39 genomes. Three resistance genes, sul2, tetA and blaCMY-2, were predicted to be located on IncA/C2 plasmid in S. Minnesota isolates, whereas all S. Infantis isolates were positive to IncFIB(K)_1_Kpn3 plasmid that carries bla CTX-M-65 gene. Eleven Salmonella pathogenicity islands and up to 131 stress and/or virulence genes were identified in the evaluated genomes. Phylogenetic analysis showed four phylogroups that were consistent with the identified ST profiles with a high level of inter-diversity between isolates. This is the first genomic characterization of Salmonella isolates from retail chicken meat in Saudi Arabia using WGS technology. The availability of Salmonella genomes from multiple geographic locations, including Saudi Arabia, would be highly beneficial in future source-tracking, especially during epidemiological surveillance and outbreak investigations.
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Affiliation(s)
- Khaloud O. Alzahrani
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Fahad M. AL-Reshoodi
- Antimicrobial Resistance Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Elaf A. Alshdokhi
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Ashwaq S. Alhamed
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Meshari A. Al Hadlaq
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Mohammed I. Mujallad
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Lenah E. Mukhtar
- Antimicrobial Resistance Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Amani T. Alsufyani
- Antimicrobial Resistance Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Abdullah A. Alajlan
- Microbial Identification Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Malfi S. Al Rashidy
- Microbial Identification Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Mashan J. Al Dawsari
- Microbial Identification Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Saleh I. Al-Akeel
- Microbial Identification Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Meshari H. AL-Harthi
- Microbiology Section, Food Laboratory, Laboratories Executive Department, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Abdulaziz M. Al Manee
- Microbial Hazards Division, Risk Assessment Department, Executive Department of Monitoring and Risk Assessment, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
- Biology Department, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Majed F. Alghoribi
- Infectious Diseases Research Department, King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia
- Department of Basic Science, College of Science and Health Professions, King Saud Bin Abdulaziz University for Health Sciences (KSAU), Riyadh, Saudi Arabia
| | - Suliman M. Alajel
- Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
- *Correspondence: Suliman M. Alajel,
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Al-Mnaser A, Dakheel M, Alkandari F, Woodward M. Polyphenolic phytochemicals as natural feed additives to control bacterial pathogens in the chicken gut. Arch Microbiol 2022; 204:253. [PMID: 35412092 PMCID: PMC9001821 DOI: 10.1007/s00203-022-02862-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 03/17/2022] [Accepted: 03/20/2022] [Indexed: 01/21/2023]
Abstract
Poultry provides an important protein source consumed globally by human population, and simultaneously, acts as a substantial reservoir of antibiotic resistant bacterial species such as Escherichia coli, Salmonella, Campylobacter, Clostridium perfringens. These bacterial species can include commensal strains with beneficial roles on poultry health and productivity, and pathogenic strains not only to poultry but zoonotically to man. This review paper evaluates the role of phytochemicals as possible alternatives to antibiotics and natural anti-bacterial agents to control antibiotic resistance in poultry. The focus of this paper is on the polyphenolic phytochemicals as they constitute the major group; carvacrol oil (the active ingredient of oregano), thymol oil (the main ingredient of oregano), oregano oil, and tannins oil as feed additives and their mechanism of actions that might enhance avian gut health by controlling antibiotic-resistant bacterial strains spread in poultry.
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Affiliation(s)
- Afnan Al-Mnaser
- Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading, RG6 6DZ, UK.
- Dasman Diabetes Institute, Dasman, Sharq, Kuwait.
| | - Mohammed Dakheel
- Department of Veterinary Public Health, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq
| | - Fatemah Alkandari
- Department of Plant Protection, Public Authority of Agriculture Affairs and Fish Resources, Al-Rabia, Kuwait
| | - Martin Woodward
- Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading, RG6 6DZ, UK
- Folium Science, Unit DX, Bristol, BS2 0XJ, UK
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6
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Antimicrobial Resistance and Virulence of Non-Typhoidal Salmonella from Retail Foods Marketed in Bangkok, Thailand. Foods 2022; 11:foods11050661. [PMID: 35267294 PMCID: PMC8909193 DOI: 10.3390/foods11050661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/12/2022] [Accepted: 02/22/2022] [Indexed: 02/06/2023] Open
Abstract
Nontyphoidal-Salmonella bacteria cause foodborne gastroenteritis that may lead to fatal bacteremia, osteomyelitis, and meningitis if not treated properly. The emergence of multidrug-resistant Salmonella strains is a global public health threat. Regular monitoring of genotypes and phenotypes of Salmonella isolated from humans, animals, foods, and environments is mandatory for effective reduction and control of this food-borne pathogen. In this study, antimicrobial-resistant and virulent genotypes and phenotypes of Salmonella isolated from retail food samples in Bangkok, Thailand, were investigated. From 252 raw food samples, 58 Salmonella strains that belonged only to serotype Enteritidis were isolated. Disc diffusion method showed that all isolates were still sensitive to amikacin and carbapenems. More than 30% of the isolates were resistant to ampicillin, tetracycline, and ciprofloxacin. Twenty isolates resist at least three antibiotic classes. Minimum inhibitory concentration tests showed that 12.07% of the isolates produced extended-spectrum β-Lactamase. Polymerase chain reaction indicated that 32.76, 81.03, 39.66, and 5.17% of the isolates carried blaTEM-1, tetA, sul2, and dfrA7, respectively. All isolates were positive for invasion-associated genes. Effective prevention and control of Salmonella (as well as other food-borne pathogens) is possible by increasing public awareness and applying food hygienic practices. Active and well harmonised “One Health” co-operation is required to effectively control food-borne zoonosis.
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Muñoz-Vargas L, Pempek JA, Proudfoot K, Eastridge ML, Rajala-Schultz PJ, Wittum T, Habing G. The Impact of Overstocking and Negative Energy Balance on Quantitative Measurement of Non-typhoidal Salmonella in Periparturient Dairy Cattle. Front Vet Sci 2022; 9:779900. [PMID: 35252416 PMCID: PMC8891502 DOI: 10.3389/fvets.2022.779900] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 01/24/2022] [Indexed: 11/14/2022] Open
Abstract
Stressful conditions in animal production facilities may exacerbate the fecal shedding and foodborne transmission of non-typhoidal Salmonella enterica subsp. enterica. Dairy cows are reservoirs of this zoonotic microorganism, and its prevalence has roughly doubled in the past decade on dairy farms in United States. Dairy cows are commonly overstocked at the feed bunk, and stressors placed on the animal prior to parturition may exacerbate Salmonella shedding. However, no studies have evaluated the impact of overstocking and metabolic stress on fecal concentrations of the pathogen. Therefore, we conducted a field trial with 120 multiparous dairy cows randomized into one of four treatment groups with different stocking densities at the feed bunk during the periparturient period as follows: US, understocked from −60 to −1 DRC; OS, overstocked from −60 to −1 DRC; USOS, understocked from −60 to −26 DRC/overstocked from −25 to −1 DRC; and OSUS, overstocked from −60 to −26 DRC/ understocked from −25 to −1 DRC. Fecal and blood samples were collected at four time points relative to calving. qPCR assays were used to quantify Salmonella invA gene and total bacterial community from fecal samples, and a subset of isolates recovered from fecal bacterial culture were characterized using pulsed field gel electrophoresis and serotyping. Serum non-esterified fatty acids (NEFA) were measured as a metabolic stress indicator using an immunoassay. Multivariable analyses were performed to test if changes in Salmonella concentrations were associated with stocking density, energy balance, or days relative to calving. From fecal isolates, three Salmonella serovars were identified, S. Cerro; Kentucky; Meleagridis. Concentrations of Salmonella increased as cows approached calving. Higher stocking densities at the feed bunk did not impact total bacterial community or NEFA; however, cows in the overstocked groups had higher Salmonella fecal concentrations. Further, cows with higher NEFA concentrations after calving had a higher likelihood of detection of Salmonella. Future farm interventions should aim to reduce environmental and metabolic stress during the periparturient period to decrease the dissemination of Salmonella to cattle, the environment, and humans.
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Affiliation(s)
- Lohendy Muñoz-Vargas
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States
- *Correspondence: Lohendy Muñoz-Vargas
| | - Jessica A. Pempek
- Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Columbus, OH, United States
| | - Kathryn Proudfoot
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States
| | - Maurice L. Eastridge
- Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Columbus, OH, United States
| | - Päivi J. Rajala-Schultz
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States
| | - Thomas Wittum
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States
| | - Gregory Habing
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States
- Gregory Habing
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Schmidt JW, Murray SA, Dickey AM, Wheeler TL, Harhay DM, Arthur TM. Twenty-Four-Month Longitudinal Study Suggests Little to No Horizontal Gene Transfer In Situ between Third-Generation Cephalosporin-Resistant Salmonella and Third-Generation Cephalosporin-Resistant Escherichia coli in a Beef Cattle Feedyard. J Food Prot 2022; 85:323-335. [PMID: 34788437 DOI: 10.4315/jfp-21-371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/17/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT Third-generation cephalosporins (3GCs) are preferred treatments for serious human Salmonella enterica infections. Beef cattle are suspected to contribute to human 3GC-resistant Salmonella infections. Commensal 3GC-resistant Escherichia coli are thought to act as reservoirs of 3GC resistance because these strains are isolated more frequently than are 3GC-resistant Salmonella strains at beef cattle feedyards. During each of 24 consecutive months, four samples of pen surface material were obtained from five pens (N = 480) at a Nebraska feedyard to determine to the contribution of 3GC-resistant E. coli to the occurrence of 3GC-resistant Salmonella. Illumina whole genome sequencing was performed, and susceptibility to 14 antimicrobial agents was determined for 121 3GC-susceptible Salmonella, 121 3GC-resistant Salmonella, and 203 3GC-resistant E. coli isolates. 3GC-susceptible Salmonella isolates were predominantly from serotypes Muenchen (70.2%) and Montevideo clade 1 (23.1%). 3GC-resistant Salmonella isolates were predominantly from serotypes Montevideo clade 2 (84.3%). One bla gene type (blaCMY-2) and the IncC plasmid replicon were present in 100 and 97.5% of the 3GC-resistant Salmonella, respectively. Eleven bla gene types were detected in the 3GC-resistant E. coli, which were distributed across 42 multilocus sequence types. The blaCMY-2 gene and IncC plasmid replicon were present in 37.9 and 9.9% of the 3GC-resistant E. coli, respectively. These results suggest that 3GC resistance in Salmonella was primarily due the persistence of Salmonella Montevideo clade 2 with very minimal or no contribution from 3GC-resistant E. coli via horizontal gene transfer and that 3GC-resistant E. coli may not be a useful indicator for 3GC-resistant Salmonella in beef cattle production environments. HIGHLIGHTS
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Affiliation(s)
- John W Schmidt
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
| | - Sarah A Murray
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
| | - Aaron M Dickey
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
| | - Tommy L Wheeler
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
| | - Dayna M Harhay
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
| | - Terrance M Arthur
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA
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9
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Recent Evolution and Genomic Profile of Salmonella enterica Serovar Heidelberg Isolates from Poultry Flocks in Brazil. Appl Environ Microbiol 2021; 87:e0103621. [PMID: 34406824 DOI: 10.1128/aem.01036-21] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Salmonella enterica serovar Heidelberg is isolated from poultry-producing regions around the world. In Brazil, S. Heidelberg has been frequently detected in poultry flocks, slaughterhouses, and chicken meat. The goal of the present study was to assess the population structure, recent temporal evolution, and some important genetic characteristics of S. Heidelberg isolated from Brazilian poultry farms. Phylogenetic analysis of 68 S. Heidelberg genomes sequenced here and additional whole-genome data from NCBI demonstrated that all isolates from the Brazilian poultry production chain clustered into a monophyletic group, here called S. Heidelberg Brazilian poultry lineage (SH-BPL). Bayesian analysis defined the time of the most recent common ancestor (tMRCA) as 2004, and the overall population size (Ne) was constant until 2008, when an ∼10-fold Ne increase was observed until circa 2013. SH-BPL presented at least two plasmids with replicons ColpVC (n = 68; 100%), IncX1 (n = 66; 97%), IncA/C2 (n = 65; 95.5%), ColRNAI (n = 43; 63.2%), IncI1 (n = 32; 47%), ColMG828, Col156, IncHI2A, IncHI2, IncQ1, IncX4, IncY, and TrfA (each with n < 4; <4% each). Antibiotic resistance genes were found, with high frequencies of fosA7 (n = 68; 100%), mdf(A) (n = 68; 100%), tet(34) (n = 68; 100%), sul2 (n = 64; 94.1%), and blaCMY-2 (n = 56; 82.3%), along with an overall multidrug resistance (MDR) profile. Ten Salmonella pathogenicity islands (SPI1 to SPI5, SPI9, and SPI11 to SPI14) and 139 virulence genes were also detected. The SH-BPL profile was like those of other previous S. Heidelberg isolates from poultry around the world in the 1990s. In conclusion, the present study demonstrates the recent introduction (2004) and high level of dissemination of an MDR S. Heidelberg lineage in Brazilian poultry operations. IMPORTANCE S. Heidelberg is the most frequent serovar in several broiler farms from the main Brazilian poultry-producing regions. Therefore, avian-source foods (mainly chicken carcasses) commercialized in the country and exported to other continents are contaminated with this foodborne pathogen, generating several national and international economic losses. In addition, isolates of this serovar are usually resistant to antibiotics and can cause human invasive and septicemic infection, representing a public health concern. This study demonstrates the use of whole-genome sequencing (WGS) to obtain epidemiological information for one S. Heidelberg lineage highly spread among Brazilian poultry farms. This information will help to define biosecurity measures to control this important Salmonella serovar in Brazilian and worldwide poultry operations.
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Delaney S, Do TT, Corrigan A, Murphy R, Walsh F. Investigation into the effect of mannan-rich fraction supplementation on the metagenome of broiler chickens. Microb Genom 2021; 7. [PMID: 34259622 PMCID: PMC8477404 DOI: 10.1099/mgen.0.000602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Antibiotic resistance is regarded as one of the most serious threats to human health worldwide. The rapid increase in resistance rates has been attributed to the extensive use of antibiotics since they became commercially available. The use of antibiotics as growth promotors has been banned in numerous regions for this reason. Mannan-rich fraction (MRF) has been reported to show similar growth-promoting effects to antibiotics. We investigated the effect of MRF on the microbial community, resistome and metabolic pathways within the caecum of commercial broilers at two different timepoints within the growth of the broiler, day 27 and day 34. The data indicated an overall increase in health and economic gain for the producer with the addition of MRF to the diet of the broilers. The only significant difference across the microbial composition of the samples was in the richness of the microbial communities across all samples. While all samples harboured resistance genes conferring resistance to the same classes of antibiotics, there was significant variation in the antimicrobial resistance gene richness across time and treatment and across combinations of time and treatment. The taxa with positive correlation comprised Bacilli and Clostridia. The negative correlation taxa were also dominated by Bacilli, specifically the Streptococcus genera. The KEGG-pathway analysis identified an age-related change in the metabolism pathway abundances of the caecal microflora. We suggest that the MRF-related increases in health and weight gain in the broilers may be associated with changes in the metabolism of the microbiomes rather than the microbial composition. The resistome variations across samples were correlated with specific genera. These data may be used to further enhance the development of feed supplements to reduce the presence of antibiotic resistance genes (ARGs) within poultry. While the ARGs of greatest concern to human or animal health were not detected in this study, it has identified the potential to reduce the presence of ARGs by the increase in specific genera.
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Affiliation(s)
- Sarah Delaney
- Antimicrobial Resistance & Microbiome Research Group, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland.,Alltech European Bioscience CentreDunboyne, Co. Meath, Ireland
| | - Thi Thuy Do
- Antimicrobial Resistance & Microbiome Research Group, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - Aoife Corrigan
- Alltech European Bioscience CentreDunboyne, Co. Meath, Ireland
| | - Richard Murphy
- Alltech European Bioscience CentreDunboyne, Co. Meath, Ireland
| | - Fiona Walsh
- Antimicrobial Resistance & Microbiome Research Group, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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11
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Agbaje M, Ayo-Ajayi P, Kehinde O, Omoshaba E, Dipeolu M, Fasina FO. Salmonella Characterization in Poultry Eggs Sold in Farms and Markets in Relation to Handling and Biosecurity Practices in Ogun State, Nigeria. Antibiotics (Basel) 2021; 10:antibiotics10070773. [PMID: 34202847 PMCID: PMC8300622 DOI: 10.3390/antibiotics10070773] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/01/2021] [Accepted: 06/05/2021] [Indexed: 02/05/2023] Open
Abstract
Salmonella remains one of the notable food-borne bacterial pathogens. It is associated with poultry and poultry products including eggs. This study investigated Salmonella distribution in eggshell and content, their antimicrobial resistance pattern, and the possible risk factors driving contamination in Ogun State, Nigeria. A total of 500 eggs (5 eggs pooled into one sample) were collected and culturally examined for the presence of Salmonella serovars. Isolates were further characterized biochemically using Microbact 20E (Oxoid) and Antimicrobial susceptibility determined by the Kirby-Bauer disk diffusion method. A total of 14 Salmonella isolates spread across 10 serovars were recovered from the 100 pooled egg samples; 10 (10%) from the market and 4 (4%) farms, 13(13%) eggshell, and 1(1%) egg content. All tested serovars were susceptible to ampicillin, chloramphenicol, florfenicol, and kanamycin. Resistance was mostly observed in sulfamethoxazole 8 (80%), followed by ciprofloxacin 5 (50%) and tetracycline 3 (30%). Sales of eggs in the market appear to be a strong factor encouraging contamination in addition to poor biosecurity and unhygienic handling of eggs on the farm.
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Affiliation(s)
- Michael Agbaje
- Department of Veterinary Microbiology, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta 110124, Nigeria; (M.A.); (E.O.)
| | - Patience Ayo-Ajayi
- Department of Veterinary and Pest Control Services, Federal Ministry of Agriculture and Rural Development, Abuja 900287, Nigeria;
- Nigerian Field Epidemiology and Laboratory Training Programe, 50 Haille Selassie Str., Asokoro, Abuja 900287, Nigeria
| | - Olugbenga Kehinde
- Department of Veterinary Public Health and Preventive Medicine, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta 110124, Nigeria; (O.K.); (M.D.)
| | - Ezekiel Omoshaba
- Department of Veterinary Microbiology, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta 110124, Nigeria; (M.A.); (E.O.)
| | - Morenike Dipeolu
- Department of Veterinary Public Health and Preventive Medicine, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta 110124, Nigeria; (O.K.); (M.D.)
| | - Folorunso O. Fasina
- Emergency Centre for Transboundary Animal Diseases, Food and Agriculture Organization of the United Nations, Dar es Salaam 14111, Tanzania
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa
- Correspondence: or ; Tel.: +255-686-132-852
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12
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Shang D, Zhao H, Xu X, Arunachalam K, Chang J, Bai L, Shi C. Conjugative IncHI2 plasmid harboring novel class 1 integron mediated dissemination of multidrug resistance genes in Salmonella Typhimurium. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Thakali A, MacRae JD. A review of chemical and microbial contamination in food: What are the threats to a circular food system? ENVIRONMENTAL RESEARCH 2021; 194:110635. [PMID: 33347866 DOI: 10.1016/j.envres.2020.110635] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
A circular food system is one in which food waste is processed to recover plant nutrients and returned to the soil to enable the production of more food, rather than being diverted to landfill or incineration. The approach may be used to reduce energy and water use in food production and contribute to the sustainability of the system. Anaerobic digestion and composting are common food waste treatment technologies used to stabilize waste and produce residual materials that can replenish the soil, thus contributing to a circular food system. This approach can only be deemed safe and feasible, however, if food waste is uncontaminated or any contaminants are destroyed during treatment. This review brings together information on several contaminant classes at different stages of the food supply chain, their possible sources, and their fates during composting and digestion. The main aim is to identify factors that could impede the transition towards a safe, reliable and efficient circular food system. We investigated heavy metals, halogenated organic compounds, foodborne pathogens and antibiotic resistance genes (ARGs) in the food system and their fates during digestion and composting. Production and processing stages were identified as major entry points for these classes of contaminants. Heavy metals and foodborne pathogens pose less risk in a circular system than halogenated organics or antibiotic resistance. Given the diversity of properties among halogenated organic compounds, there is conflicting evidence about their fate during treatment. There are relatively few studies on the fate of ARGs during treatment, and these have produced variable results, indicating a need for more research to clarify their fate in the final products. Repeated land application of contaminated food waste residuals can increase the risk of accumulation and jeopardize the safety of a circular food system. Thus, careful management of the system and research into the fate of the contaminants during treatment is needed.
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Affiliation(s)
- Astha Thakali
- Department of Civil and Environmental Engineering, University of Maine, 5711 Boardman Hall, Orono, ME, 04469, USA.
| | - Jean D MacRae
- Department of Civil and Environmental Engineering, University of Maine, 5711 Boardman Hall, Orono, ME, 04469, USA.
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14
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Troxell B, Mendoza M, Ali R, Koci M, Hassan H. Attenuated Salmonella enterica Serovar Typhimurium, Strain NC983, Is Immunogenic, and Protective against Virulent Typhimurium Challenges in Mice. Vaccines (Basel) 2020; 8:vaccines8040646. [PMID: 33153043 PMCID: PMC7711481 DOI: 10.3390/vaccines8040646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 01/31/2023] Open
Abstract
Non-typhoidal Salmonella (NTS) serovars are significant health burden worldwide. Although much effort has been devoted to developing typhoid-based vaccines for humans, currently there is no NTS vaccine available. Presented here is the efficacy of a live attenuated serovar Typhimurium strain (NC983). Oral delivery of strain NC983 was capable of fully protecting C57BL/6 and BALB/c mice against challenge with virulent Typhimurium. Strain NC983 was found to elicit an anti-Typhimurium IgG response following administration of vaccine and boosting doses. Furthermore, in competition experiments with virulent S. Typhimurium (ATCC 14028), NC983 was highly defective in colonization of the murine liver and spleen. Collectively, these results indicate that strain NC983 is a potential live attenuated vaccine strain that warrants further development.
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Affiliation(s)
- Bryan Troxell
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (B.T.); (M.M.); (R.A.); (M.K.)
| | - Mary Mendoza
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (B.T.); (M.M.); (R.A.); (M.K.)
| | - Rizwana Ali
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (B.T.); (M.M.); (R.A.); (M.K.)
| | - Matthew Koci
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (B.T.); (M.M.); (R.A.); (M.K.)
| | - Hosni Hassan
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (B.T.); (M.M.); (R.A.); (M.K.)
- Microbiology Graduate Program, North Carolina State University, Raleigh, NC 27695, USA
- Correspondence: ; Tel.: +919-515-7081; Fax: +919-515-2625
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15
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Antony L, Fenske G, Kaushik RS, Nagaraja TG, Thomas M, Scaria J. Population structure of Salmonella enterica serotype Mbandaka reveals similar virulence potential irrespective of source and phylogenomic stratification. F1000Res 2020; 9:1142. [PMID: 33214877 PMCID: PMC7653644 DOI: 10.12688/f1000research.25540.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/08/2020] [Indexed: 11/22/2022] Open
Abstract
Background: Salmonella enterica serotype Mbandaka ( Salmonella ser. Mbandaka) is a multi-host adapted Non-typhoidal Salmonella (NTS) that can cause foodborne illnesses in human. Outbreaks of Salmonella ser. Mbandaka contributed to the economic stress caused by NTS due to hospitalizations. Whole genome sequencing (WGS)-based phylogenomic analysis facilitates better understanding of the genomic features that may expedite the foodborne spread of Salmonella ser. Mbandaka. Methods: In the present study, we define the population structure, antimicrobial resistance (AMR), and virulence profile of Salmonella ser. Mbandaka using WGS data of more than 400 isolates collected from different parts of the world. We validated the genotypic prediction of AMR and virulence phenotypically using an available set of representative isolates. Results: Phylogenetic analysis of Salmonella ser. Mbandaka using Bayesian approaches revealed clustering of the population into two major groups; however, clustering of these groups and their subgroups showed no pattern based on the host or geographical origin. Instead, we found a uniform virulence gene repertoire in all isolates. Phenotypic analysis on a representative set of isolates showed a similar trend in cell invasion behavior and adaptation to a low pH environment. Both genotypic and phenotypic analysis revealed the carriage of multidrug resistance (MDR) genes in Salmonella ser. Mbandaka. Conclusions: Overall, our results show that the presence of multidrug resistance along with adaptation to broad range of hosts and uniformity in the virulence potential, isolates of Salmonella ser. Mbandaka from any source could have the potential to cause foodborne outbreaks as well as AMR dissemination.
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Affiliation(s)
- Linto Antony
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, 57007, USA
- South Dakota Center for Biologics Research and Commercialization, Brookings, SD, USA
| | - Gavin Fenske
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, 57007, USA
- South Dakota Center for Biologics Research and Commercialization, Brookings, SD, USA
| | - Radhey S Kaushik
- Department of Biology & Microbiology, South Dakota State University, Brookings, SD, 57007, USA
| | - Tiruvoor G Nagaraja
- Department of Diagnostic Medicine & Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, 66506, USA
| | - Milton Thomas
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, 57007, USA
| | - Joy Scaria
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, 57007, USA
- South Dakota Center for Biologics Research and Commercialization, Brookings, SD, USA
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16
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Souza AIS, Saraiva MMS, Casas MRT, Oliveira GM, Cardozo MV, Benevides VP, Barbosa FO, Freitas Neto OC, Almeida AM, Berchieri A. High occurrence of β-lactamase-producing Salmonella Heidelberg from poultry origin. PLoS One 2020; 15:e0230676. [PMID: 32231395 PMCID: PMC7108700 DOI: 10.1371/journal.pone.0230676] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 03/05/2020] [Indexed: 11/29/2022] Open
Abstract
Salmonella Heidelberg is commonly reported in foodborne outbreaks around the world, and chickens and poultry products are known as important source of these pathogen. Multidrug-resistant S. Heidelberg strains are disseminated into poultry production chair, which can lead to severe clinical infections in humans and of difficult to treat. This study aimed at evaluating the β-lactam susceptibility and genotypic relatedness of Salmonella Heidelberg at Brazilian poultry production chain. Sixty-two S. Heidelberg strains from poultry production chain (poultry, poultry meat and poultry farm) were used. All strains were evaluated to antimicrobial susceptibility by diffusion disk test, as well as β-lactam resistance genes. Genotypic relatedness was assessed by Pulsed-Field Gel Eletrophoresis, using Xba1 restriction enzyme. Forty-one strains were characterized as multidrug-resistant according to phenotype characterization. The resistance susceptibility revealed 31 distinct profiles, with higher prevalence of streptomycin (61/62), nalidixic acid (50/62), tetracycline (43/62) and β-lactam drugs (37/62). blaCMY-2 was the more frequent β-lactamase gene found (38/62); other resistance genes found were blaCTX-M (2/62), blaSHV (3/62) and blaTEM-1 (38/62). No carbapenemase genes was found. The Pulsed-Field Gel Electrophoresis showed 58 different profiles. Strains with a larger number of antimicrobial resistance were grouped into ten major clusters apart from others. The spread of resistance by ampC continues to rise, thereby turning concern to public health, since the β-lactam antimicrobials are used as a therapeutic treatment in humans.
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Affiliation(s)
- Andrei I. S. Souza
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
- Agricultural and Livestock Microbiology Postgraduation Program, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Mauro M. S. Saraiva
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Monique R. T. Casas
- Nucleus of Enteric Diseases and Infections by Special Pathogens of the Center for Bacteriology of the Adolfo Lutz Institute, São Paulo, São Paulo, Brazil
| | - Gustavo M. Oliveira
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Marita V. Cardozo
- Department of Veterinary Pathology, Laboratory of Microbiology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Valdinete P. Benevides
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
- Agricultural and Livestock Microbiology Postgraduation Program, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Fernanda O. Barbosa
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
- Veterinary Medicine Postgraduation Program, School of Agricultural ad Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | | | - Adriana M. Almeida
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Angelo Berchieri
- Department of Veterinary Pathology, Laboratory of Avian Pathology, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
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17
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Gupta SK, Sharma P, McMillan EA, Jackson CR, Hiott LM, Woodley T, Humayoun SB, Barrett JB, Frye JG, McClelland M. Genomic comparison of diverse Salmonella serovars isolated from swine. PLoS One 2019; 14:e0224518. [PMID: 31675365 PMCID: PMC6824618 DOI: 10.1371/journal.pone.0224518] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/15/2019] [Indexed: 12/19/2022] Open
Abstract
Food animals act as a reservoir for many foodborne pathogens. Salmonella enterica is one of the leading pathogens that cause food borne illness in a broad host range including animals and humans. They can also be associated with a single host species or a subset of hosts, due to genetic factors associated with colonization and infection. Adult swine are often asymptomatic carriers of a broad range of Salmonella servoars and can act as an important reservoir of infections for humans. In order to understand the genetic variations among different Salmonella serovars, Whole Genome Sequences (WGS) of fourteen Salmonella serovars from swine products were analyzed. More than 75% of the genes were part of the core genome in each isolate and the higher fraction of gene assign to different functional categories in dispensable genes indicated that these genes acquired for better adaptability and diversity. High concordance (97%) was detected between phenotypically confirmed antibiotic resistances and identified antibiotic resistance genes from WGS. The resistance determinants were mainly located on mobile genetic elements (MGE) on plasmids or integrated into the chromosome. Most of known and putative virulence genes were part of the core genome, but a small fraction were detected on MGE. Predicted integrated phage were highly diverse and many harbored virulence, metal resistance, or antibiotic resistance genes. CRISPR (Clustered regularly interspaced short palindromic repeats) patterns revealed the common ancestry or infection history among Salmonella serovars. Overall genomic analysis revealed a great deal of diversity among Salmonella serovars due to acquired genes that enable them to thrive and survive during infection.
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Affiliation(s)
- Sushim K. Gupta
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Poonam Sharma
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Elizabeth A. McMillan
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
- Department of Microbiology, University of Georgia, Athens, GA, United States of America
| | - Charlene R. Jackson
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Lari M. Hiott
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Tiffanie Woodley
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Shaheen B. Humayoun
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - John B. Barrett
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
| | - Jonathan G. Frye
- Bacterial Epidemiology and Antimicrobial Resistance Unit, USDA-ARS, Athens, GA, United States of America
- * E-mail:
| | - Michael McClelland
- Department of Microbiology and Molecular Genetics, University of California Irvine, Irvine, CA, United States of America
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18
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Zhou X, Li M, Xu L, Shi C, Shi X. Characterization of Antibiotic Resistance Genes, Plasmids, Biofilm Formation, andIn VitroInvasion Capacity ofSalmonellaEnteritidis Isolates from Children with Gastroenteritis. Microb Drug Resist 2019; 25:1191-1198. [DOI: 10.1089/mdr.2018.0421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Xiujuan Zhou
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
| | - Meiya Li
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Li Xu
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
| | - Chunlei Shi
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
| | - Xianming Shi
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
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19
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Vikram A, Miller E, Arthur TM, Bosilevac JM, Wheeler TL, Schmidt JW. Food Service Pork Chops from Three U.S. Regions Harbor Similar Levels of Antimicrobial Resistance Regardless of Antibiotic Use Claims. J Food Prot 2019; 82:1667-1676. [PMID: 31532250 DOI: 10.4315/0362-028x.jfp-19-139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pork products from animals "raised without antibiotics" (RWA) are assumed to harbor lower levels of antimicrobial resistance (AMR) than conventional (CONV) pork products with no claims regarding use of antimicrobial agents during production. A total of 372 pork chop samples from CONV (n = 190) and RWA (n = 182) production systems were collected over 13 months from three food service suppliers. The following bacteria were cultured: Escherichia coli, tetracycline-resistant (TETr) E. coli, third-generation cephalosporin-resistant (3GCr) E. coli, Salmonella enterica, TETr Salmonella, 3GCr Salmonella, nalidixic acid-resistant Salmonella, Enterococcus spp., TETr Enterococcus, erythromycin-resistant Enterococcus, Staphylococcus aureus, and methicillin-resistant S. aureus. Production system did not significantly impact the detection of cultured bacteria (P > 0.05). Metagenomic DNA was isolated from each sample, and equal amounts of metagenomic DNA were pooled by supplier, month, and production system for 75 pooled samples (38 CONV, 37 RWA). Quantitative PCR was used to assess the abundances of the following 10 AMR genes: aac(6')-Ie-aph(2″)-Ia, aadA1, blaCMY-2, blaCTX-M, blaKPC-2, erm(B), mecA, tet(A), tet(B), and tet(M). For all 10 AMR genes, abundances did not differ significantly (P > 0.05) between production systems. These results suggest that use of antimicrobial agents during swine production minimally impacts the AMR of bacteria in pork chops.
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Affiliation(s)
- Amit Vikram
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Eric Miller
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Terrance M Arthur
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Joseph M Bosilevac
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Tommy L Wheeler
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - John W Schmidt
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: https://orcid.org/0000-0001-9035-0474 [T.M.A.]; https://orcid/org/0000-0002-6571-9097 [T.L.W.]; https://orcid.org/0000-0003-0494-2436 [J.W.S.])
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20
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Kumar A, Allison A, Henry M, Scales A, Fouladkhah AC. Development of Salmonellosis as Affected by Bioactive Food Compounds. Microorganisms 2019; 7:microorganisms7090364. [PMID: 31540475 PMCID: PMC6780870 DOI: 10.3390/microorganisms7090364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/15/2019] [Accepted: 09/17/2019] [Indexed: 02/07/2023] Open
Abstract
Infections caused by Salmonella serovars are the leading cause of foodborne hospitalizations and deaths in Americans, extensively prevalent worldwide, and pose a considerable financial burden on public health infrastructure and private manufacturing. While a comprehensive review is lacking for delineating the role of dietary components on prevention of Salmonellosis, evidence for the role of diet for preventing the infection and management of Salmonellosis symptoms is increasing. The current study is an evaluation of preclinical and clinical studies and their underlying mechanisms to elaborate the efficacy of bioactive dietary components for augmenting the prevention of Salmonella infection. Studies investigating dietary components such as fibers, fatty acids, amino acids, vitamins, minerals, phenolic compounds, and probiotics exhibited efficacy of dietary compounds against Salmonellosis through manipulation of host bile acids, mucin, epithelial barrier, innate and adaptive immunity and gut microbiota as well as impacting the cellular signaling cascades of the pathogen. Pre-clinical studies investigating synergism and/or antagonistic activities of various bioactive compounds, additional randomized clinical trials, if not curtailed by lack of equipoise and ethical concerns, and well-planned epidemiological studies could augment the development of a validated and evidence-based guideline for mitigating the public health burden of human Salmonellosis through dietary compounds.
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Affiliation(s)
- Ajay Kumar
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.
| | - Abimbola Allison
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, TN 37209, USA.
| | - Monica Henry
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, TN 37209, USA.
| | - Anita Scales
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, TN 37209, USA.
| | - Aliyar Cyrus Fouladkhah
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, TN 37209, USA.
- Cooperative Extension Program, Tennessee State University, Nashville, TN 37209, USA.
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21
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Mutai WC, Waiyaki PG, Kariuki S, Muigai AWT. Plasmid profiling and incompatibility grouping of multidrug resistant Salmonella enterica serovar Typhi isolates in Nairobi, Kenya. BMC Res Notes 2019; 12:422. [PMID: 31311578 PMCID: PMC6636098 DOI: 10.1186/s13104-019-4468-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/11/2019] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES Plasmids harbour antibiotic resistance genes which contribute to the emergence of multidrug resistant pathogens. We detected the presence of plasmids in multidrug resistant Salmonella enterica serovar Typhi (S. Typhi) isolates from our previous study and consequently determined their incompatibility groups and possibility of conjugation transmission. Plasmids were extracted from 98 multidrug resistant S. Typhi isolates based on alkaline lysis technique. Plasmid incompatibility grouping was established by PCR replicon typing using 18 pairs of primers to amplify FIA, FIB, FIC, HI1, HI2, I1-Iγ, L/M, N, P, W, T, A/C, K, B/O, X, Y, F and FIIA replicons. Antibiotic resistance phenotypes were conjugally transferred from S. Typhi isolates with plasmids to Escherichia coli K12F strain devoid of plasmids. RESULTS Approximately 79.6% of the MDR S. Typhi isolates were related to the existence of plasmids. We detected 93.6% of plasmids belonging to incompatibility (Inc) group HI1. The other incompatibility groups identified included IncFIC (16.7%), IncP (1.3%), and IncI1 (1.3%) which appeared together with Inc HI1. MDR S. Typhi isolated carried a homologous plasmid of incompatibility group HI1 most of which transferred the resistance phenotypes of ampicillin, tetracycline and chloramphenicol to the transconjugants.
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Affiliation(s)
- Winnie C Mutai
- Department of Medical Microbiology, School of Medicine, University of Nairobi, Nairobi, Kenya.
| | - Peter G Waiyaki
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Samuel Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Anne W T Muigai
- School of Biological Sciences, Jomo Kenyatta University of Agriculture and Technology, Juja, Kenya
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22
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Jajere SM. A review of Salmonella enterica with particular focus on the pathogenicity and virulence factors, host specificity and antimicrobial resistance including multidrug resistance. Vet World 2019; 12:504-521. [PMID: 31190705 PMCID: PMC6515828 DOI: 10.14202/vetworld.2019.504-521] [Citation(s) in RCA: 290] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/11/2019] [Indexed: 12/03/2022] Open
Abstract
Salmonella genus represents the most common foodborne pathogens frequently isolated from food-producing animals that is responsible for zoonotic infections in humans and animal species including birds. Thus, Salmonella infections represent a major concern to public health, animals, and food industry worldwide. Salmonella enterica represents the most pathogenic specie and includes > 2600 serovars characterized thus far. Salmonella can be transmitted to humans along the farm-to-fork continuum, commonly through contaminated foods of animal origin, namely poultry and poultry-related products (eggs), pork, fish etc. Some Salmonella serovars are restricted to one specific host commonly referred to as "host-restricted" whereas others have broad host spectrum known as "host-adapted" serovars. For Salmonella to colonize its hosts through invading, attaching, and bypassing the host's intestinal defense mechanisms such as the gastric acid, many virulence markers and determinants have been demonstrated to play crucial role in its pathogenesis; and these factors included flagella, capsule, plasmids, adhesion systems, and type 3 secretion systems encoded on the Salmonella pathogenicity island (SPI)-1 and SPI-2, and other SPIs. The epidemiologically important non-typhoidal Salmonella (NTS) serovars linked with a high burden of foodborne Salmonella outbreaks in humans worldwide included Typhimurium, Enteritidis, Heidelberg, and Newport. The increased number of NTS cases reported through surveillance in recent years from the United States, Europe and low- and middle-income countries of the world suggested that the control programs targeted at reducing the contamination of food animals along the food chain have largely not been successful. Furthermore, the emergence of several clones of Salmonella resistant to multiple antimicrobials worldwide underscores a significant food safety hazard. In this review, we discussed on the historical background, nomenclature and taxonomy, morphological features, physical and biochemical characteristics of NTS with a particular focus on the pathogenicity and virulence factors, host specificity, transmission, and antimicrobial resistance including multidrug resistance and its surveillance.
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Affiliation(s)
- Saleh Mohammed Jajere
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Maiduguri, PMB 1069, Maiduguri, Borno State, Nigeria
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Campos J, Mourão J, Peixe L, Antunes P. Non-typhoidal Salmonella in the Pig Production Chain: A Comprehensive Analysis of Its Impact on Human Health. Pathogens 2019; 8:E19. [PMID: 30700039 PMCID: PMC6470815 DOI: 10.3390/pathogens8010019] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 11/17/2022] Open
Abstract
Salmonellosis remains one of the most frequent foodborne zoonosis, constituting a worldwide major public health concern. The most frequent sources of human infections are food products of animal origin, being pork meat one of the most relevant. Currently, particular pig food production well-adapted and persistent Salmonella enterica serotypes (e.g., Salmonella Typhimurium, Salmonella 1,4,[5],12:i:-, Salmonella Derby and Salmonella Rissen) are frequently reported associated with human infections in diverse industrialized countries. The dissemination of those clinically-relevant Salmonella serotypes/clones has been related to the intensification of pig production chain and to an increase in the international trade of pigs and pork meat. Those changes that occurred over the years along the food chain may act as food chain drivers leading to new problems and challenges, compromising the successful control of Salmonella. Among those, the emergence of antibiotic resistance in non-typhoidal Salmonella associated with antimicrobials use in the pig production chain is of special concern for public health. The transmission of pig-related multidrug-resistant Salmonella serotypes, clones and/or genetic elements carrying clinically-relevant antibiotic resistance genes, frequently associated with metal tolerance genes, from pigs and pork meat to humans, has been reported and highlights the contribution of different drivers to the antibiotic resistance burden. Gathered data strengthen the need for global mandatory interventions and strategies for effective Salmonella control and surveillance across the pig production chain. The purpose of this review was to provide an overview of the role of pig and pork meat in human salmonellosis at a global scale, highlighting the main factors contributing to the persistence and dissemination of clinically-relevant pig-related Salmonella serotypes and clones.
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Affiliation(s)
- Joana Campos
- UCIBIO@REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Portugal; Rua de Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal.
| | - Joana Mourão
- UCIBIO@REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Portugal; Rua de Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal.
| | - Luísa Peixe
- UCIBIO@REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Portugal; Rua de Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal.
| | - Patrícia Antunes
- UCIBIO@REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Portugal; Rua de Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal.
- Faculdade de Ciências da Nutrição e Alimentação, Universidade do Porto, Portugal; Rua Dr. Roberto Frias, 4200 Porto, Portugal.
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Vikram A, Miller E, Arthur TM, Bosilevac JM, Wheeler TL, Schmidt JW. Similar Levels of Antimicrobial Resistance in U.S. Food Service Ground Beef Products with and without a "Raised without Antibiotics" Claim. J Food Prot 2018; 81:2007-2018. [PMID: 30476443 DOI: 10.4315/0362-028x.jfp-18-299] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
U.S. ground beef with "raised without antibiotics" (RWA) label claims are perceived as harboring fewer bacteria with antimicrobial resistance (AMR) than are found in conventional (CONV) ground beef with no such label claim. A total of 370 ground beef samples from CONV ( n = 191) and RWA ( n = 179) production systems were collected over 13 months from three food service suppliers. The following bacteria were cultured: Escherichia coli, tetracycline-resistant (TETr) E. coli, third-generation cephalosporin-resistant (3GCr) E. coli, Salmonella enterica, TETr S. enterica, 3GCr S. enterica, nalidixic acid-resistant S. enterica, Enterococcus spp., erythromycin-resistant Enterococcus spp., TETr Enterococcus spp., Staphylococcus aureus, and methicillin-resistant S. aureus. TETr E. coli was more frequently detected in CONV ground beef (CONV, 54.2%; RWA, 35.2%; P < 0.01), but supplier ( P < 0.01) and production system × suppler interaction ( P < 0.01) effects were also significant. Metagenomic DNA was isolated from each sample, and equal amounts of metagenomic DNA were pooled by supplier, month, and production system for 75 pooled samples (38 CONV, 37 RWA). The abundance of aac(6')-Ie-aph(2″)-Ia, aadA1, blaCMY-2, blaCTX-M, blaKPC-2, erm(B), mecA, tet(A), tet(B), and tet(M) genes was assessed by quantitative PCR. The tet(A) (2.9-log2-fold change, P = 0.04) and tet(B) (5.6-log2-fold change) ( P = 0.03) genes were significantly more abundant in RWA ground beef. Phylogenetic analyses revealed that ground beef microbiomes differed more by supplier than by production system. These results were consistent with prior research suggesting antimicrobial use in U.S. beef cattle has minimal impact on the AMR of bacteria found in these products. These results should spur a reevaluation of assumptions regarding the impact of antimicrobial use during U.S. beef production on the AMR of bacteria in ground beef.
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Affiliation(s)
- Amit Vikram
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Eric Miller
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Terrance M Arthur
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Joseph M Bosilevac
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - Tommy L Wheeler
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
| | - John W Schmidt
- U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Nebraska 68933, USA (ORCID: http://orcid.org/0000-0001-9035-0474 [T.M.A.], http://orcid.org/0000-0002-6571-9097 [T.L.W.], http://orcid.org/0000-0003-0494-2436 [J.W.S.])
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25
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Antimicrobial residues in animal products may induce Salmonella spp. resistance in humans. Future Med Chem 2018; 10:2501-2506. [PMID: 30499348 DOI: 10.4155/fmc-2018-0247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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26
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Abatcha MG, Effarizah ME, Rusul G. Prevalence, antimicrobial resistance, resistance genes and class 1 integrons of Salmonella serovars in leafy vegetables, chicken carcasses and related processing environments in Malaysian fresh food markets. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.02.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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MacKinnon MC, Pearl DL, Carson CA, Parmley EJ, McEwen SA. Comparison of annual and regional variation in multidrug resistance using various classification metrics for generic Escherichia coli isolated from chicken abattoir surveillance samples in Canada. Prev Vet Med 2018; 154:9-17. [DOI: 10.1016/j.prevetmed.2018.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 02/05/2018] [Accepted: 03/13/2018] [Indexed: 11/26/2022]
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28
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Muñoz-Vargas L, Finney SK, Hutchinson H, Masterson MA, Habing G. Impact of Clinical Salmonellosis in Veal Calves on the Recovery of Salmonella in Lymph Nodes at Harvest. Foodborne Pathog Dis 2017; 14:678-685. [PMID: 28910140 DOI: 10.1089/fpd.2017.2303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The objective of this study was to determine the prevalence, serotypes, antimicrobial resistance phenotypes, and pulsed-field gel electrophoresis (PFGE) patterns of Salmonella recovered in feces and mesenteric and prefemoral lymph nodes (LNs) from cohorts of calves with and without a confirmed outbreak of salmonellosis. In a prospective cohort study, 160 calves from four farms without a reported outbreak (nonoutbreak farms) were sampled at farm and harvest. In addition, harvest samples from 80 calves of two farms with a confirmed outbreak (outbreak farms) were collected. A culture protocol for Salmonella isolation was applied for all samples and recovered isolates were further characterized by serotyping, antimicrobial susceptibility testing, and PFGE. Among nonoutbreak farms, Salmonella was recovered from 0% (0/160) farm fecal samples, 3.7% (6/160) harvest fecal swabs, 21.9% (35/160) mesenteric LNs, and 0.6% (1/160) prefemoral LNs. Serotypes identified in nonoutbreak herds included Salmonella Typhimurium, Cerro, Hartford, and Newport. Most isolates (64.3%, 27/42) exhibited a unique multidrug-resistant (MDR) phenotype, including resistance to extended-spectrum cephalosporins. Salmonella prevalence in harvest fecal samples and prefemoral LNs among calves from outbreak farms was numerically higher, but not significantly different than those without an outbreak. Serotypes recovered from outbreak farms included Salmonella Heidelberg and Typhimurium, and the monophasic Salmonella Typhimurium strains 4,5,12:i:- and 4,12:i:-, which have been also reported as highly pathogenic in humans. All isolates (33/33) exhibited an MDR phenotype. Salmonella strains recovered from ill calves in two outbreaks had indistinguishable PFGE patterns, suggesting between-farm transmission. In addition, the genotype of Salmonella Heidelberg causing an outbreak among calves was recovered from three prefemoral LNs of surviving members of the cohort at harvest. Implementation of preharvest biosecurity measures (limited personnel and visitor traffic, vehicle, footwear, and utensils disinfection) should be highly recommended to decrease the prevalence of Salmonella on farms and safeguard the food safety.
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Affiliation(s)
- Lohendy Muñoz-Vargas
- 1 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University , Columbus, Ohio
| | - Sarah K Finney
- 1 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University , Columbus, Ohio
| | - Holden Hutchinson
- 2 Department of Animal Sciences, College of Food, Agricultural, and Environmental Sciences, The Ohio State University , Columbus, Ohio
| | - Margaret A Masterson
- 1 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University , Columbus, Ohio
| | - Greg Habing
- 1 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University , Columbus, Ohio
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29
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The Changing Role of the Clinical Microbiology Laboratory in Defining Resistance in Gram-negatives. Infect Dis Clin North Am 2017; 30:323-345. [PMID: 27208762 DOI: 10.1016/j.idc.2016.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The evolution of resistance in Gram-negatives has challenged the clinical microbiology laboratory to implement new methods for their detection. Multidrug-resistant strains present major challenges to conventional and new detection methods. More rapid pathogen identification and antimicrobial susceptibility testing have been developed for use directly on specimens, including fluorescence in situ hybridization tests, automated polymerase chain reaction systems, microarrays, mass spectroscopy, next-generation sequencing, and microfluidics. Review of these methods shows the advances that have been made in rapid detection of resistance in cultures, but limited progress in direct detection from specimens.
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30
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Jiu Y, Zhu S, Khan SB, Sun M, Zou G, Meng X, Wu B, Zhou R, Li S. Phenotypic and Genotypic Resistance of Salmonella Isolates from Healthy and Diseased Pigs in China During 2008–2015. Microb Drug Resist 2017; 23:651-659. [DOI: 10.1089/mdr.2016.0132] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yueguang Jiu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Shun Zhu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Sher Bahadar Khan
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Mengzhen Sun
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Geng Zou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Xianrong Meng
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Bin Wu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Rui Zhou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Shaowen Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
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Helke KL, McCrackin MA, Galloway AM, Poole AZ, Salgado CD, Marriott BP. Effects of antimicrobial use in agricultural animals on drug-resistant foodborne salmonellosis in humans: A systematic literature review. Crit Rev Food Sci Nutr 2017; 57:472-488. [PMID: 27602884 DOI: 10.1080/10408398.2016.1230088] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Controversy continues concerning antimicrobial use in food animals and its relationship to drug-resistant infections in humans. We systematically reviewed published literature for evidence of a relationship between antimicrobial use in agricultural animals and drug-resistant meat or dairy-borne non-typhoidal salmonellosis in humans. Based on publications from the United States (U.S.), Canada, and Denmark from January 2010 to July 2014, 858 articles received title and abstract review, 104 met study criteria for full article review with 68 retained for which data are presented. Antibiotic exposure in both cattle and humans found an increased likelihood of Salmonella colonization, whereas in chickens, animals not exposed to antibiotics (organic) were more likely to be Salmonella positive and those that had antibiotic exposure were more likely to harbor antimicrobial resistant Salmonella organisms. In swine literature, only tylosin exposure was examined and no correlation was found among exposure, Salmonella colonization, or antimicrobial resistance. No studies that identified farm antimicrobial use also traced antimicrobial-resistant Salmonella from farm to fork.
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Affiliation(s)
- Kristi L Helke
- a Department of Comparative Medicine , Medical University of South Carolina , Charleston , South Carolina , USA
| | - M A McCrackin
- a Department of Comparative Medicine , Medical University of South Carolina , Charleston , South Carolina , USA.,b Ralph H. Johnson VA Medical Center Department of Research Service , Charleston , South Carolina , USA
| | - Ashley M Galloway
- c Department of Medicine , Nutrition Section, Division of Gastroenterology, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Ann Z Poole
- c Department of Medicine , Nutrition Section, Division of Gastroenterology, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Cassandra D Salgado
- d Department of Medicine , Infectious Disease Division, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Bernadette P Marriott
- c Department of Medicine , Nutrition Section, Division of Gastroenterology, Medical University of South Carolina , Charleston , South Carolina , USA.,e Department of Psychiatry , Nutrition Section, Division of Gastroenterology, Medical University of South Carolina , Charleston , South Carolina , USA
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32
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Cameron A, McAllister TA. Antimicrobial usage and resistance in beef production. J Anim Sci Biotechnol 2016; 7:68. [PMID: 27999667 PMCID: PMC5154118 DOI: 10.1186/s40104-016-0127-3] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/28/2016] [Indexed: 11/10/2022] Open
Abstract
Antimicrobials are critical to contemporary high-intensity beef production. Many different antimicrobials are approved for beef cattle, and are used judiciously for animal welfare, and controversially, to promote growth and feed efficiency. Antimicrobial administration provides a powerful selective pressure that acts on the microbial community, selecting for resistance gene determinants and antimicrobial-resistant bacteria resident in the bovine flora. The bovine microbiota includes many harmless bacteria, but also opportunistic pathogens that may acquire and propagate resistance genes within the microbial community via horizontal gene transfer. Antimicrobial-resistant bovine pathogens can also complicate the prevention and treatment of infectious diseases in beef feedlots, threatening the efficiency of the beef production system. Likewise, the transmission of antimicrobial resistance genes to bovine-associated human pathogens is a potential public health concern. This review outlines current antimicrobial use practices pertaining to beef production, and explores the frequency of antimicrobial resistance in major bovine pathogens. The effect of antimicrobials on the composition of the bovine microbiota is examined, as are the effects on the beef production resistome. Antimicrobial resistance is further explored within the context of the wider beef production continuum, with emphasis on antimicrobial resistance genes in the food chain, and risk to the human population.
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Affiliation(s)
- Andrew Cameron
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB Canada ; Agriculture and Agri-Food Canada, Lethbridge, AB Canada
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33
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Chen W, Fang T, Zhou X, Zhang D, Shi X, Shi C. IncHI2 Plasmids Are Predominant in Antibiotic-Resistant Salmonella Isolates. Front Microbiol 2016; 7:1566. [PMID: 27746775 PMCID: PMC5043248 DOI: 10.3389/fmicb.2016.01566] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 09/20/2016] [Indexed: 01/07/2023] Open
Abstract
The wide usage of antibiotics contributes to the increase in the prevalence of antibiotic-resistant Salmonella. Plasmids play a critical role in horizontal transfer of antibiotic resistance markers in Salmonella. This study aimed to screen and characterize plasmid profiles responsible for antibiotic resistance in Salmonella and ultimately to clarify the molecular mechanism of transferable plasmid-mediated antibiotic resistance. A total of 226 Salmonella isolates were examined for antimicrobial susceptibility by a disk diffusion method. Thirty-two isolates (14.2%) were resistant to at least one antibiotic. The presence of plasmid-mediated quinolone resistance (PMQR) genes and β-lactamase genes were established by PCR amplification. PCR-based replicon typing revealed that these 32 isolates represented seven plasmid incompatibility groups (IncP, HI2, A/C, FIIs, FIA, FIB, and I1), and the IncHI2 (59.4%) was predominant. Antibiotic resistance markers located on plasmids were identified through plasmid curing. Fifteen phenotypic variants were obtained with the curing efficiency of 46.9% (15/32). The cured plasmids mainly belong to the HI2 incompatibility group. The elimination of IncHI2 plasmids correlated with the loss of β-lactamase genes (blaOXA-1 and blaTEM-1) and PMQR genes (qnrA and aac(6')-Ib-cr). Both IncHI2 and IncI1 plasmids in a S. enterica serovar Indiana isolate SJTUF 10584 were lost by curing. The blaCMY -2-carrying plasmid pS10584 from SJTUF 10584 was fully sequenced. Sequence analysis revealed that it possessed a plasmid scaffold typical for IncI1 plasmids with the unique genetic arrangement of IS1294-ΔISEcp1-blaCMY -2-blc-sugE-ΔecnR inserted into the colicin gene cia. These data suggested that IncHI2 was the major plasmid lineage contributing to the dissemination of antibiotic resistance in Salmonella and the activity of multiple mobile genetic elements may contribute to antibiotic resistance evolution and dissemination between different plasmid replicons.
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Affiliation(s)
| | | | | | | | | | - Chunlei Shi
- Ministry of Science and Technology–United States Department of Agriculture Joint Research Center for Food Safety, School of Agriculture and Biology, Shanghai Jiao Tong UniversityShanghai, China
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Bai L, Zhao J, Gan X, Wang J, Zhang X, Cui S, Xia S, Hu Y, Yan S, Wang J, Li F, Fanning S, Xu J. Emergence and Diversity of Salmonella enterica Serovar Indiana Isolates with Concurrent Resistance to Ciprofloxacin and Cefotaxime from Patients and Food-Producing Animals in China. Antimicrob Agents Chemother 2016; 60:3365-71. [PMID: 27001808 PMCID: PMC4879380 DOI: 10.1128/aac.02849-15] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/10/2016] [Indexed: 12/16/2022] Open
Abstract
Salmonellosis is a major global foodborne infection, and strains that are resistant to a great variety of antibiotics have become a major public health concern. The aim of this study was to identify genes conferring resistance to fluoroquinolones and extended-spectrum β-lactams in nontyphoidal Salmonella (NTS) from patients and food-producing animals in China. In total, 133 and 21 NTS isolates from animals and humans, respectively, exhibiting concurrent resistance to ciprofloxacin and cefotaxime were cultured independently from 2009 to ∼2013. All of the isolates were identified, serotyped, and subjected to antimicrobial susceptibility testing. Importantly, the isolates with concurrent resistance to ciprofloxacin and cefotaxime all were confirmed as S. enterica serovar Indiana. The presence of fluoroquinolone resistance genes and extended-spectrum β-lactamases (ESBLs) was established by PCR and DNA sequencing. The occurrence and diversity of different genes conferring fluoroquinolone resistance [qepA, oqxAB, and aac(6')-Ib-cr] with mutations in topoisomerase-encoding genes (gyrA and parC) and several ESBLs (including CTX-M-65, CTX-M-27, CTX-M-15, CTX-M-14, and CTX-M-14/CTX-M-15) were noteworthy. Genes located on mobile genetic elements were identified by conjugation and transformation. Pulsed-field gel electrophoresis, used to determine the genetic relationships between these isolates, generated 91 pulsotypes from 133 chicken isolates and 17 pulsotypes from the 21 clinical isolates that showed considerable diversity. Analysis of the pulsotypes obtained with the isolates showed some clones appeared to have existed for several years and had been disseminating between humans and food-producing animals. This study highlights the emergence of ciprofloxacin- and cefotaxime-resistant S. enterica serovar Indiana, posing a threat to public health.
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Affiliation(s)
- Li Bai
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Jiayong Zhao
- Center for Disease Control and Prevention of Henan Province, Henan, China
| | - Xin Gan
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Juan Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiuli Zhang
- Center for Disease Control and Prevention of Henan Province, Henan, China
| | - Shenghui Cui
- Department of Food Science, National Institutes for Food and Drug Control, Beijing, China
| | - Shengli Xia
- Center for Disease Control and Prevention of Henan Province, Henan, China
| | - Yujie Hu
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Shaofei Yan
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Jiahui Wang
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Fengqin Li
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Séamus Fanning
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China UCD-Centre for Food Safety, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Belfield, Dublin, Ireland
| | - Jin Xu
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
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Prasertsee T, Khantaprab N, Yamsakul P, Santiyanont P, Chokesajjawatee N, Patchanee P. Repetitive sequence-based PCR fingerprinting and the relationship of antimicrobial-resistance characteristics and corresponding genes among Salmonella strains from pig production. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2016. [DOI: 10.1016/s2222-1808(15)61054-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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36
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Characterization of antimicrobial resistance in Salmonella enterica strains isolated from Brazilian poultry production. Antonie van Leeuwenhoek 2015; 108:1227-38. [DOI: 10.1007/s10482-015-0577-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/28/2015] [Indexed: 01/01/2023]
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Mąka Ł, Maćkiw E, Ścieżyńska H, Modzelewska M, Popowska M. Resistance to Sulfonamides and Dissemination ofsulGenes AmongSalmonellaspp. Isolated from Food in Poland. Foodborne Pathog Dis 2015; 12:383-9. [DOI: 10.1089/fpd.2014.1825] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Łukasz Mąka
- Laboratory of Food Microbiology, Department of Food Safety, National Institute of Public Health—National Institute of Hygiene, Warsaw, Poland
| | - Elżbieta Maćkiw
- Laboratory of Food Microbiology, Department of Food Safety, National Institute of Public Health—National Institute of Hygiene, Warsaw, Poland
| | - Halina Ścieżyńska
- Laboratory of Food Microbiology, Department of Food Safety, National Institute of Public Health—National Institute of Hygiene, Warsaw, Poland
| | - Magdalena Modzelewska
- Laboratory of Food Microbiology, Department of Food Safety, National Institute of Public Health—National Institute of Hygiene, Warsaw, Poland
| | - Magdalena Popowska
- Department of Applied Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
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Barbosa LN, Probst IDS, Andrade BFMT, Alves FCB, Albano M, da Cunha MDLRDS, Doyama JT, Rall VLM, Fernandes Júnior A. In vitro antibacterial and chemical properties of essential oils including native plants from Brazil against pathogenic and resistant bacteria. J Oleo Sci 2015; 64:289-98. [PMID: 25757433 DOI: 10.5650/jos.ess14209] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The antimicrobials products from plants have increased in importance due to the therapeutic potential in the treatment of infectious diseases. Therefore, we aimed to examine the chemical characterisation (GC-MS) of essential oils (EO) from seven plants and measure antibacterial activities against bacterial strains isolated from clinical human specimens (methicillin-resistant Staphylococcus aureus (MRSA) and sensitive (MSSA), Escherichia coli, Pseudomonas aeruginosa, Salmonella Typhimurium) and foods (Salmonella Enteritidis). Assays were performed using the minimal inhibitory concentration (MIC and MIC90%) (mg/mL) by agar dilution and time kill curve methods (log CFU/mL) to aiming synergism between EO. EO chemical analysis showed a predominance of terpenes and its derivatives. The highest antibacterial activities were with Cinnamomun zeylanicum (0.25 mg/mL on almost bacteria tested) and Caryophyllus aromaticus EO (2.40 mg/mL on Salmonella Enteritidis), and the lowest activity was with Eugenia uniflora (from 50.80 mg/mL against MSSA to 92.40 mg/mL against both Salmonella sources and P. aeruginosa) EO. The time kill curve assays revealed the occurrence of bactericide synergism in combinations of C. aromaticus and C. zeylanicum with Rosmarinus. officinalis. Thus, the antibacterial activities of the EO were large and this can also be explained by complex chemical composition of the oils tested in this study and the synergistic effect of these EO, yet requires further investigation because these interactions between the various chemical compounds can increase or reduce (antagonism effect) the inhibitory effect of essential oils against bacterial strains.
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Affiliation(s)
- Lidiane Nunes Barbosa
- Department of Microbiology and Immunology, Institute of Biosciences, Sao Paulo State University "Julio de Mesquita Filho"
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Li G, Feng Y, Xu Y, Wu Q, Han Q, Liang X, Yang B, Wang X, Xia X. The anti-infective activity of punicalagin against Salmonella enterica subsp. enterica serovar typhimurium in mice. Food Funct 2015; 6:2357-64. [DOI: 10.1039/c5fo00053j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Punicalagin, a major bioactive component of pomegranate peel, has an anti-infective effect againstS. typhimuriuminfection in mice.
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Affiliation(s)
- Guanghui Li
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
- College of Food and Biological Engineering
| | - Yuqing Feng
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Yunfeng Xu
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Qian Wu
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Qi'an Han
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Xiujun Liang
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Baowei Yang
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Xin Wang
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
| | - Xiaodong Xia
- College of Food Science and Engineering
- Northwest A&F University
- Yangling
- China
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40
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Plasmid-encoded tetracycline efflux pump protein alters bacterial stress responses and ecological fitness of Acinetobacter oleivorans. PLoS One 2014; 9:e107716. [PMID: 25229538 PMCID: PMC4167995 DOI: 10.1371/journal.pone.0107716] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 08/21/2014] [Indexed: 12/04/2022] Open
Abstract
Acquisition of the extracellular tetracycline (TC) resistance plasmid pAST2 affected host gene expression and phenotype in the oil-degrading soil bacterium, Acinetobacter oleivorans DR1. Whole-transcriptome profiling of DR1 cells harboring pAST2 revealed that all the plasmid genes were highly expressed under TC conditions, and the expression levels of many host chromosomal genes were modulated by the presence of pAST2. The host energy burden imposed by replication of pAST2 led to (i) lowered ATP concentrations, (ii) downregulated expression of many genes involved in cellular growth, and (iii) reduced growth rate. Interestingly, some phenotypes were restored by deleting the plasmid-encoded efflux pump gene tetH, suggesting that the membrane integrity changes resulting from the incorporation of efflux pump proteins also resulted in altered host response under the tested conditions. Alteration of membrane integrity by tetH deletion was shown by measuring permeability of fluorescent probe and membrane hydrophobicity. The presence of the plasmid conferred peroxide and superoxide resistance to cells, but only peroxide resistance was diminished by tetH gene deletion, suggesting that the plasmid-encoded membrane-bound efflux pump protein provided peroxide resistance. The downregulation of fimbriae-related genes presumably led to reduced swimming motility, but this phenotype was recovered by tetH gene deletion. Our data suggest that not only the plasmid replication burden, but also its encoded efflux pump protein altered host chromosomal gene expression and phenotype, which also alters the ecological fitness of the host in the environment.
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Keelara S, Thakur S. Dissemination of plasmid-encoded AmpC β-lactamases in antimicrobial resistant Salmonella serotypes originating from humans, pigs and the swine environment. Vet Microbiol 2014; 173:76-83. [DOI: 10.1016/j.vetmic.2014.07.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 07/23/2014] [Accepted: 07/24/2014] [Indexed: 11/29/2022]
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Carraro N, Sauvé M, Matteau D, Lauzon G, Rodrigue S, Burrus V. Development of pVCR94ΔX from Vibrio cholerae, a prototype for studying multidrug resistant IncA/C conjugative plasmids. Front Microbiol 2014; 5:44. [PMID: 24567731 PMCID: PMC3915882 DOI: 10.3389/fmicb.2014.00044] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 01/21/2014] [Indexed: 01/02/2023] Open
Abstract
Antibiotic resistance has grown steadily in Vibrio cholerae over the last few decades to become a major threat in countries affected by cholera. Multi-drug resistance (MDR) spreads among clinical and environmental V. cholerae strains by lateral gene transfer often mediated by integrative and conjugative elements (ICEs) of the SXT/R391 family. However, in a few reported but seemingly isolated cases, MDR in V. cholerae was shown to be associated with other self-transmissible genetic elements such as conjugative plasmids. IncA/C conjugative plasmids are often found associated with MDR in isolates of Enterobacteriaceae. To date, IncA/C plasmids have not been commonly found in V. cholerae or other species of Vibrio. Here we present a detailed analysis of pVCR94ΔX derived from pVCR94, a novel IncA/C conjugative plasmid identified in a V. cholerae clinical strain isolated during the 1994 Rwandan cholera outbreak. pVCR94 was found to confer resistance to sulfamethoxazole, trimethoprim, ampicillin, streptomycin, tetracycline, and chloramphenicol and to transfer at very high frequency. Sequence analysis revealed its mosaic nature as well as high similarity of the core genes responsible for transfer and maintenance with other IncA/C plasmids and ICEs of the SXT/R391 family. Although IncA/C plasmids are considered a major threat in antibiotics resistance, their basic biology has received little attention, mostly because of the difficulty to genetically manipulate these MDR conferring elements. Therefore, we developed a convenient derivative from pVCR94, pVCR94Δ X, a 120.5-kb conjugative plasmid which only codes for sulfamethoxazole resistance. Using pVCR94Δ X, we identified the origin of transfer (oriT) and discovered an essential gene for transfer, both located within the shared backbone, allowing for an annotation update of all IncA/C plasmids. pVCR94Δ X may be a useful model that will provide new insights on the basic biology of IncA/C conjugative plasmids.
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Affiliation(s)
- Nicolas Carraro
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
| | - Maxime Sauvé
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
| | - Dominick Matteau
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
| | - Guillaume Lauzon
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
| | - Sébastien Rodrigue
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
| | - Vincent Burrus
- Département de Biologie, Université de Sherbrooke Sherbrooke, QC, Canada
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Masek BJ, Hardick J, Won H, Yang S, Hsieh YH, Rothman RE, Gaydos CA. Sensitive detection and serovar differentiation of typhoidal and nontyphoidal Salmonella enterica species using 16S rRNA Gene PCR coupled with high-resolution melt analysis. J Mol Diagn 2013; 16:261-6. [PMID: 24365382 DOI: 10.1016/j.jmoldx.2013.10.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/27/2013] [Accepted: 10/24/2013] [Indexed: 12/19/2022] Open
Abstract
Salmonella enterica species infections are a significant public health problem causing high morbidity rates worldwide and high mortality rates in the developing world. These infections are not always rapidly diagnosed as a cause of bloodstream infections because of the limitations of blood culture, which greatly affects clinical care as a result of treatment delays. A molecular diagnostic assay that could rapidly detect and identify S. enterica species infections as a cause of sepsis is needed. Nine typhoidal and nontyphoidal S. enterica serovars were used to establish the limit of detection (LOD) of a previously published 16S rRNA gene PCR (16S PCR) in mock whole blood specimens. In addition, 16 typhoidal and nontyphoidal S. enterica serovars were used to evaluate the serovar differentiation capability of 16S PCR coupled with high-resolution melt analysis. The overall LOD of 16S PCR for the nine typhoidal and nontyphoidal S. enterica serovars analyzed was <10 colony-forming units per milliliter (CFU/mL) in mock whole blood specimens, with the lowest and highest LOD at <1 CFU/mL and 9 CFU/mL, respectively. By high-resolution melt analysis, the typhoidal and nontyphoidal S. enterica serovar groups analyzed each generated a unique grouping code, allowing for serovar-level identification. 16S PCR coupled with high-resolution melt analysis could be a useful molecular diagnostic that could enhance the current diagnostic, treatment, and surveillance methods of S. enterica bloodstream infections.
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Affiliation(s)
- Billie J Masek
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland.
| | - Justin Hardick
- Division of Infectious Diseases, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
| | - Helen Won
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland; Memorial and the Sloan-Kettering Cancer Center, New York, New York
| | - Samuel Yang
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
| | - Yu-Hsiang Hsieh
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
| | - Richard E Rothman
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland; Division of Infectious Diseases, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
| | - Charlotte A Gaydos
- Department of Emergency Medicine, School of Medicine, The Johns Hopkins University, Baltimore, Maryland; Division of Infectious Diseases, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
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Keelara S, Scott HM, Morrow WM, Hartley CS, Griffin DL, Gebreyes WA, Thakur S. Comparative phenotypic and genotypic characterization of temporally related nontyphoidal Salmonella isolated from human clinical cases, pigs, and the environment in North Carolina. Foodborne Pathog Dis 2013; 11:156-64. [PMID: 24237109 DOI: 10.1089/fpd.2013.1630] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nontyphoidal Salmonella infections caused by antimicrobial-resistant (AMR) strains are of great public health concern. We compared the phenotypic and genotypic relationships among temporally and spatially related AMR Salmonella isolates (n=1058) representing several predominant serovars, including Salmonella Typhimurium, Salmonella Typhimurium var. 5-, Salmonella Derby, Salmonella Heidelberg, Salmonella Muenchen, Salmonella Schwarzengrund, and Salmonella Rissen of human clinical cases (n=572), pig (n=212), and farm environment (n=274) origin in North Carolina. Antimicrobial susceptibility testing was performed using the broth microdilution method, and genotypic resistance determinants, including class I and II integrons, were identified. Overall, Salmonella isolates exhibited the highest frequency of resistance to tetracycline (50%), followed by sulfisoxazole (36%) and streptomycin (27%). We identified 16 different antimicrobial resistance genes, including extended spectrum and AmpC β-lactamases-producing genes (bla(TEM), bla(PSE), and bla(CMY-2)), in all the β-lactam- and cephalosporin-resistant Salmonella isolates from humans, pigs, and the environment. Class I integrons of 1-kb and 1.2-kb size were identified from all the three sources (humans, 66%; pigs, 85%; environment, 58%), while Class II integrons of 2-kb size were identified only in pig (10%) and environmental (19%) isolates. We detected genotypic similarity between Salmonella Typhimurium isolated from humans, pigs, and the environment while serovars Derby, Heidelberg, and Muenchen exhibited genotypic diversity. Detection of AMR Salmonella isolates from humans, pigs, and the environment is a concern for clinicians and veterinarians to mitigate the dissemination of AMR Salmonella strains.
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Affiliation(s)
- Shivaramu Keelara
- 1 Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University , Raleigh, North Carolina
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Association of Transferable Quinolone Resistance Determinant qnrB19 with Extended-Spectrum β -Lactamases in Salmonella Give and Salmonella Heidelberg in Venezuela. Int J Microbiol 2013; 2013:628185. [PMID: 24187555 PMCID: PMC3800642 DOI: 10.1155/2013/628185] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 08/13/2013] [Accepted: 08/29/2013] [Indexed: 11/18/2022] Open
Abstract
Four nontyphoidal Salmonella strains with resistance to extended-spectrum cephalosporins and nonclassical quinolone resistance phenotype were studied. Two S. Give were isolated from pediatric patients with acute gastroenteritis, and two S. Heidelberg were recovered from raw chicken meat. Phenotypic characterization included antimicrobial susceptibility testing and detection of extended-spectrum β-lactamases (ESBLs) by the double-disc synergy method. The detection of quinolone resistance-determining regions (QRDR) of gyrA, gyrB, and gyrC genes, blaESBLs genes, and plasmid-mediated quinolone resistance (PMQR) determinants was carried out by molecular methods. Plasmid analysis included Southern blot and restriction patterns. Transferability of resistance genes was examined by transformation. blaTEM-1 + blaSHV-12 genes were detected in S. Give SG9611 and blaTEM-1 + blaCTX-M-2 in the other three strains: S. Give SG9811, S. Heidelberg SH7511, and SH7911. Regardless of origin and serovars, the qnrB19 gene was detected in the 4 strains studied. All determinants of resistance were localized in plasmids and successfully transferred by transformation. This study highlights the circulation of qnrB19 associated with blaTEM-1, blaSHV-12, and blaCTX-M-2 in S. Give and S. Heidelberg in Venezuela. The recognition of factors associated with increasing resistance and the study of the molecular mechanisms involved can lead to a more focused use of antimicrobial agents.
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