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Antibiotics
Special Issues
Antimicrobial Resistance in Foodborne Pathogens
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Antimicrobial Resistance in Foodborne Pathogens

A special issue of Antibiotics (ISSN 2079-6382).

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 6098

Special Issue Editors

Prof. Dr. Tetsuo Asai

E-Mail Website
Guest Editor
Department of Applied Veterinary Sciences United Graduate, School of Veterinary Sciences, Gifu, Japan
Interests: epidemiology and public health; antimicrobials; salmonella; Escherichia coli; pathogens; campylobacter; Campylobacter jejuni; Campylobacter coli; dystrophin; FFPE
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yoshimasa Sasaki

E-Mail Website
Guest Editor
Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
Interests: antimicrobial resistance in food-producing animals

Special Issue Information

Dear Colleagues,

Antimicrobial-resistant bacteria in food-producing animals are of great concern in human health, animal health, and the environment based on the One Health approach. Antimicrobials used in livestock production can cause the emergence and prevalence of antimicrobial-resistant bacteria such as Escherichia coli, Campylobacter spp., Salmonella spp., and Staphylococcus aureus in food-producing animals as well as their release into the environment via sewage and compost from production sites. In addition, the cross-contamination of meat and the discharge of sewage during the slaughter process can contaminate meat and the environment. This second edition of the Special Issue aims to collect original research and review articles as well as opinion papers on the epidemiology of antimicrobial resistance in bacteria in food-producing animals and retail meats, and on the release of antimicrobial-resistant bacteria from livestock production, including slaughterhouses, to the environment.

Prof. Dr. Tetsuo Asai
Prof. Dr. Yoshimasa Sasaki
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Antibiotics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • antimicrobial resistance
  • resistance gene
  • foodborne pathogen
  • food-poroducing animals
  • meats

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Published Papers (3 papers)

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Research

14 pages, 591 KiB  
Article
Assessing the Microbial Quality of Shrimp (Xiphonaeus kroyeri) and Mussels (Perna perna) Illegally Sold in the Vitória Region, Brazil, and Investigating the Antimicrobial Resistance of Escherichia coli Isolates
by Daniella Tosta Link, Gustavo Guimarães Fernandes Viana, Lívia Pasolini Siqueira, Carolina Magri Ferraz, Romário Alves Rodrigues, Luis Antonio Mathias, Marita Vedovelli Cardozo and Gabriel Augusto Marques Rossi
Antibiotics 2024, 13(3), 242; https://doi.org/10.3390/antibiotics13030242 - 6 Mar 2024
Viewed by 1954
Abstract
The consumption of seafood is crucial for food security, but poor hygiene along the food production chain can result in low microbiological quality, posing significant risks for public health and seafood quality. Thus, this study aimed to assess the microbiological quality and antimicrobial [...] Read more.
The consumption of seafood is crucial for food security, but poor hygiene along the food production chain can result in low microbiological quality, posing significant risks for public health and seafood quality. Thus, this study aimed to assess the microbiological quality and antimicrobial sensitivity of E. coli from 69 samples of illegally marketed shrimp and mussels in the Vitória Region, Brazil. These foods exhibited poor microbiological quality due to high counts of mesophilic, psychrotrophic, and enterobacteria microorganisms. While this issue is widespread in this area, shrimp samples displayed higher microbial counts compared to mussels, and fresh mussels had elevated counts of enterobacteria compared to frozen ones. Among the 10 E. coli isolates, none carried the genes blaCTX-M-1, blaCTX-M-2, blaCTX-M-3, blaCTX-M-15, mcr-1, mcr-2, mcr-3, mcr-4, and tet, associated with antibiotic resistance. Phenotypical resistance to tetracycline and fosfomycin was not observed in any isolate, while only 20% demonstrated resistance to ciprofloxacin. Regarding ampicillin and amoxicillin with clavulanic acid, 60% of isolates were resistant, 10% showed intermediate susceptibility, and 30% were sensitive. One isolate was considered simultaneously resistant to β-lactams and quinolones, and none were conserved as ESBL producers. These findings highlight the inherent risks to local public health that arise from consuming improperly prepared seafood in this area. Full article
(This article belongs to the Special Issue Antimicrobial Resistance in Foodborne Pathogens)
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16 pages, 4691 KiB  
Article
Prevalence and Genetic Characterization of Methicillin-Resistant Staphylococcus aureus Isolated from Pigs in Japan
by Michiko Kawanishi, Mari Matsuda, Hitoshi Abo, Manao Ozawa, Yuta Hosoi, Yukari Hiraoka, Saki Harada, Mio Kumakawa and Hideto Sekiguchi
Antibiotics 2024, 13(2), 155; https://doi.org/10.3390/antibiotics13020155 - 4 Feb 2024
Cited by 2 | Viewed by 1947
Abstract
We investigated the prevalence of livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) in pig slaughterhouses from 2018 to 2022 in Japan and the isolates were examined for antimicrobial susceptibility and genetic characteristics by whole-genome analysis. Although the positive LA-MRSA rates on farms (29.6%) and samples [...] Read more.
We investigated the prevalence of livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) in pig slaughterhouses from 2018 to 2022 in Japan and the isolates were examined for antimicrobial susceptibility and genetic characteristics by whole-genome analysis. Although the positive LA-MRSA rates on farms (29.6%) and samples (9.9%) in 2022 in Japan remained lower than those observed in European countries exhibiting extremely high rates of confirmed human LA-MRSA infections, these rates showed a gradually increasing trend over five years. The ST398/t034 strain was predominant, followed by ST5/t002, and differences were identified between ST398 and ST5 in terms of antimicrobial susceptibility and the resistance genes carried. Notably, LA-MRSA possessed resistance genes toward many antimicrobial classes, with 91.4% of the ST398 strains harboring zinc resistance genes. These findings indicate that the co-selection pressure associated with multidrug and zinc resistance may have contributed markedly to LA-MRSA persistence. SNP analysis revealed that ST398 and ST5 of swine origin were classified into a different cluster of MRSA from humans, showing the same ST in Japan and lacking the immune evasion genes (scn, sak, or chp). Although swine-origin LA-MRSA is currently unlikely to spread to humans and become a problem in current clinical practice, preventing its dissemination requires using antimicrobials prudently, limiting zinc utilization to the minimum required nutrient, and practicing fundamental hygiene measures. Full article
(This article belongs to the Special Issue Antimicrobial Resistance in Foodborne Pathogens)
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17 pages, 1457 KiB  
Article
High Incidence of Multiple-Drug-Resistant Pheromone-Responsive Plasmids and Transmissions of VanA-Type Vancomycin-Resistant Enterococcus faecalis between Livestock and Humans in Taiwan
by Haruyoshi Tomita, Jang-Jih Lu and Yasuyoshi Ike
Antibiotics 2023, 12(12), 1668; https://doi.org/10.3390/antibiotics12121668 - 27 Nov 2023
Cited by 2 | Viewed by 1540
Abstract
A total of seventy VanA-type vancomycin-resistant enterococci (VRE) isolates obtained in Taiwan in the early 2000s were retrospectively characterized. Forty isolates were obtained from human patients and thirty from livestock. Of these VRE isolates, twenty-three (57.5%) of the human VRE and thirty (100%) [...] Read more.
A total of seventy VanA-type vancomycin-resistant enterococci (VRE) isolates obtained in Taiwan in the early 2000s were retrospectively characterized. Forty isolates were obtained from human patients and thirty from livestock. Of these VRE isolates, twenty-three (57.5%) of the human VRE and thirty (100%) of the livestock VRE were Enterococcus faecalis, and the remaining seventeen (42.5%) of the human VRE were E. faecium. Of the 53 E. faecalis isolates, twenty-two (96%) of the human VRE and thirty (100%) of the livestock VRE exhibited a high level of resistance to vancomycin and sensitivity to teicoplanin. They also had three amino acid substitutions in the N-terminal region of the deduced VanS sequence. The vancomycin resistance of all of the 22 human isolates, and 20 of the 30 livestock isolates, transferred to E. faecalis FA2-2 at a frequency of 10−5 to 10−3 per donor cell in broth. Each of the transconjugants responded to E. faecalis pheromone (i.e., E. faecalis FA2-2 culture filtrate), indicating that the conjugative plasmids were pheromone-responsive plasmids. Three of the conjugative plasmids originated from human isolates, and five plasmids from livestock isolates were corresponded and classified as type A plasmid. Two plasmids originated from human isolates and six plasmids from livestock isolates were corresponded and classified as type B plasmid. E. faecalis FA2-2 containing either the type A or type B plasmid responded to the synthetic pheromone cAD1. The type A and type B plasmids transferred between E. faecalis FA2-2 and JH2SS at a frequency of about 10−2 per donor cell and conferred vancomycin, bacitracin, and erythromycin resistances. The complete DNA sequence of the representative type A plasmid pTW9 (85,068 bp) showed that the plasmid carried a Tn1546-like element encoding vanA-type resistance, erythromycin resistance (ermB), and bacitracin resistance (bcrABDR). The plasmid contained the regulatory region found in the pheromone-responsive plasmid and encoded the genes traA, traD and iad1, which are the key negative regulatory elements, and traE1, a key positive regulator of plasmid pAD1, indicating that plasmid pTW9 was pAD1-type pheromone-responsive plasmid. PFGE analysis of SmaI-digested chromosomal DNAs showed that several E. faecalis strains harboring an identical type A pheromone-responsive plasmid were indistinguishable, and that these were identified both in human and livestock isolates, indicating the transmissions of the VRE strains between livestock and humans. These data showed that the multiple-drug-resistant pheromone-responsive conjugative plasmids have been widely spread in both human and livestock VRE, and there was high potential for transfers of VRE from food animals to humans in Taiwan in the early 2000s. Full article
(This article belongs to the Special Issue Antimicrobial Resistance in Foodborne Pathogens)
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