1
|
Tate H, Ayers S, Nyirabahizi E, Li C, Borenstein S, Young S, Rice-Trujillo C, Saint Fleurant S, Bodeis-Jones S, Li X, Tobin-D’Angelo M, Volkova V, Hardy R, Mingle L, M’ikanatha NM, Ruesch L, Whitehouse CA, Tyson GH, Strain E, McDermott PF. Prevalence of Antimicrobial Resistance in Select Bacteria From Retail Seafood-United States, 2019. Front Microbiol 2022; 13:928509. [PMID: 35814688 PMCID: PMC9262255 DOI: 10.3389/fmicb.2022.928509] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/23/2022] [Indexed: 11/30/2022] Open
Abstract
In 2019, the United States National Antimicrobial Resistance Monitoring System (NARMS) surveyed raw salmon, shrimp, and tilapia from retail grocery outlets in eight states to assess the prevalence of bacterial contamination and antimicrobial resistance (AMR) in the isolates. Prevalence of the targeted bacterial genera ranged among the commodities: Salmonella (0%-0.4%), Aeromonas (19%-26%), Vibrio (7%-43%), Pseudomonas aeruginosa (0.8%-2.3%), Staphylococcus (23%-30%), and Enterococcus (39%-66%). Shrimp had the highest odds (OR: 2.8, CI: 2.0-3.9) of being contaminated with at least one species of these bacteria, as were seafood sourced from Asia vs. North America (OR: 2.7; CI: 1.8-4.7) and Latin America and the Caribbean vs. North America (OR: 1.6; CI: 1.1-2.3) and seafood sold at the counter vs. sold frozen (OR: 2.1; CI: 1.6-2.9). Isolates exhibited pan-susceptibility (Salmonella and P. aeruginosa) or low prevalence of resistance (<10%) to most antimicrobials tested, with few exceptions. Seafood marketed as farm-raised had lower odds of contamination with antimicrobial resistant bacteria compared to wild-caught seafood (OR: 0.4, CI: 0.2-0.7). Antimicrobial resistance genes (ARGs) were detected for various classes of medically important antimicrobials. Clinically relevant ARGs included carbapenemases (bla IMI-2, bla NDM-1) and extended spectrum β-lactamases (ESBLs; bla CTX-M-55). This population-scale study of AMR in seafood sold in the United States provided the basis for NARMS seafood monitoring, which began in 2020.
Collapse
Affiliation(s)
- Heather Tate
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Sherry Ayers
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Epiphanie Nyirabahizi
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Cong Li
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Stacey Borenstein
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Shenia Young
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Crystal Rice-Trujillo
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Sanchez Saint Fleurant
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Sonya Bodeis-Jones
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Xunde Li
- School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Melissa Tobin-D’Angelo
- Acute Disease Epidemiology Section, Georgia Department of Public Health, Atlanta, GA, United States
| | - Victoriya Volkova
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, United States
| | - Rachel Hardy
- Missouri State Public Health Laboratory, Jefferson City, MO, United States
| | - Lisa Mingle
- Wadsworth Center Division of Infectious Diseases, New York State Department of Health, Albany, NY, United States
| | - Nkuchia M. M’ikanatha
- Division of Infectious Disease Epidemiology, Pennsylvania Department of Health, Harrisburg, PA, United States
| | - Laura Ruesch
- Animal Disease Research and Diagnostic Laboratory, Veterinary and Biomedical Sciences Department, South Dakota State University, Brookings, SD, United States
| | - Chris A. Whitehouse
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Gregory H. Tyson
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Errol Strain
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Patrick F. McDermott
- Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, United States
| |
Collapse
|
2
|
Delannoy S, Hoffer C, Youf R, Dauvergne E, Webb HE, Brauge T, Tran ML, Midelet G, Granier SA, Haenni M, Fach P, Brisabois A. High Throughput Screening of Antimicrobial Resistance Genes in Gram-Negative Seafood Bacteria. Microorganisms 2022; 10:microorganisms10061225. [PMID: 35744743 PMCID: PMC9230514 DOI: 10.3390/microorganisms10061225] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 01/24/2023] Open
Abstract
From a global view of antimicrobial resistance over different sectors, seafood and the marine environment are often considered as potential reservoirs of antimicrobial resistance genes (ARGs) and mobile genetic elements (MGEs); however, there are few studies and sparse results on this sector. This study aims to provide new data and insights regarding the content of resistance markers in various seafood samples and sources, and therefore the potential exposure to humans in a global One Health approach. An innovative high throughput qPCR screening was developed and validated in order to simultaneously investigate the presence of 41 ARGs and 33 MGEs including plasmid replicons, integrons, and insertion sequences in Gram-negative bacteria. Analysis of 268 seafood isolates from the bacterial microflora of cod (n = 24), shellfish (n = 66), flat fishes (n = 53), shrimp (n = 10), and horse mackerel (n = 115) show the occurrence of sul-1, ant(3″)-Ia, aph(3')-Ia, strA, strB, dfrA1, qnrA, and blaCTX-M-9 genes in Pseudomonas spp., Providencia spp., Klebsiella spp., Proteus spp., and Shewanella spp. isolates and the presence of MGEs in all bacterial species investigated. We found that the occurrence of MGE may be associated with the seafood type and the environmental, farming, and harvest conditions. Moreover, even if MGE were detected in half of the seafood isolates investigated, association with ARG was only identified for twelve isolates. The results corroborate the hypothesis that the incidence of antimicrobial-resistant bacteria (ARB) and ARG decreases with increasing distance from potential sources of fecal contamination. This unique and original high throughput micro-array designed for the screening of ARG and MGE in Gram-negative bacteria could be easily implementable for monitoring antimicrobial resistance gene markers in diverse contexts.
Collapse
Affiliation(s)
- Sabine Delannoy
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
- Correspondence:
| | - Corine Hoffer
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
| | - Raphaëlle Youf
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
| | - Emilie Dauvergne
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
| | - Hattie E. Webb
- Department of Animal and Food Sciences, International Center for Food Safety Excellence, Texas Tech University, Lubbock, TX 79409, USA;
| | - Thomas Brauge
- Bacteriology and Parasitology of Fishery and Aquaculture Products Unit, Laboratory for Food Safety, ANSES, 62200 Boulogne-sur-Mer, France; (T.B.); (G.M.)
| | - Mai-Lan Tran
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
| | - Graziella Midelet
- Bacteriology and Parasitology of Fishery and Aquaculture Products Unit, Laboratory for Food Safety, ANSES, 62200 Boulogne-sur-Mer, France; (T.B.); (G.M.)
| | - Sophie A. Granier
- Antibiotics, Biocides, Residues and Resistance Unit, Fougères Laboratory, ANSES, 35306 Fougères, France;
| | - Marisa Haenni
- Antimicrobial Resistance and Bacterial Virulence Unit, Lyon Laboratory, Université de Lyon, ANSES, 69364 Lyon, France;
| | - Patrick Fach
- COLiPATH Unit & Genomics Platform IdentyPath, Laboratory for Food Safety, ANSES, 94700 Maisons-Alfort, France; (C.H.); (R.Y.); (E.D.); (M.-L.T.); (P.F.)
| | - Anne Brisabois
- Strategy and Programs Department, ANSES, 94700 Maisons-Alfort, France;
| |
Collapse
|
3
|
Abstract
Antimicrobial resistance is one of the most serious threats to medical science. Food supply is recognized as a potential source of resistant bacteria, leading to the development of surveillance programs targeting primarily poultry, pork, and beef. These programs are limited in scope, not only in the commodities tested, but also in the organisms targeted (Escherichia coli, Salmonella, and Campylobacter); consequently, neither the breadth of food products available nor the organisms that may harbour clinically relevant and (or) mobile resistance genes are identified. Furthermore, there is an inadequate understanding of how international trade in food products contributes to the global dissemination of resistance. This is despite the recognized role of international travel in disseminating antimicrobial-resistant organisms, notably New Delhi metallo-beta-lactamase. An increasing number of studies describing antimicrobial-resistant organisms in a variety of imported foods are summarized in this review.
Collapse
Affiliation(s)
- Dongyun Jung
- Department of Food Science and Agricultural Chemistry, McGill University, Montreal, Quebec, Canada
| | - Beverly J Morrison
- Department of Ecosystem and Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Joseph E Rubin
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| |
Collapse
|
4
|
Multi-drug resistant mesophilic aeromonads isolated from marketed scallops (Patinopecten yessoensis) harboring resistance genes. ACTA ACUST UNITED AC 2020. [DOI: 10.2478/aopf-2020-0001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Antimicrobial resistance properties of 32 Aeromonas strains isolated from fresh scallops (Patinopecten yessoensis (Jay)) marketed in Korea were assessed. All the Aeromonas spp., including A. salmonicida, were mesophilic and grew very well at 37°C. The isolates were tested for susceptibility to 19 antimicrobials belonging to eight antimicrobial classes. All isolates were multi-drug resistant, which means they were resistant to five or more antimicrobials. Higher resistance rates (≥ 50%) were observed for ampicillin, piperacillin, cephalothin, imipenem, meropenem, trimethoprim-sulfamethoxazole, tetracycline, oxytetracycline, and nalidixic acid while intermediate resistance was also determined. PCR assays revealed the presence of many antimicrobial resistance genes among the isolates in varying combinations. Among them, some isolates harbored higher numbers of resistant genes, e.g., A. veronii-V1 (aac(6’)-Ib, tetE, qnrS, IntI1), A. salmonicida–SL10 (IntI1, blaCTX, aac(3’)-Ib, aac(6’)-Ib, qnrS), A. hydrophila–H13 (IntI1, blaTEM, qnrS, aac(6’)-Ib, strA-strB). However, neither the blaSHV, blaIMP, tetB, qnrA, qnrB, and aphAI-IAB genes nor class1 integrons were detected in any of the isolates. Discrepancies between phenotypic and genetic resistance traits were observed in some isolates. With respect to outcomes, scallops are proposed as a source of multi-drug resistant Aeromonas spp. that harbor antimicrobial resistant genes.
Collapse
|
5
|
Mthembu TP, Zishiri OT, El Zowalaty ME. Detection and Molecular Identification of Salmonella Virulence Genes in Livestock Production Systems in South Africa. Pathogens 2019; 8:pathogens8030124. [PMID: 31405078 PMCID: PMC6789496 DOI: 10.3390/pathogens8030124] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/26/2019] [Accepted: 08/05/2019] [Indexed: 01/07/2023] Open
Abstract
Livestock are an important source of protein and food for humans, however opportunistic pathogens such as Salmonella spp. turn livestock into vehicles of foodborne diseases. This study investigated the prevalence of virulence genes in Salmonella spp. isolated from livestock production systems in two provinces of South Africa. During the period from May to August, 2018, a total of 361 faecal (189), oral (100), environmental (soil (36) and water (27)) and feed (9) samples were randomly collected from different animals (cattle, sheep, goats, pigs, ducks and chickens) that were housed in small-scale livestock production systems from Eastern Cape and KwaZulu-Natal Provinces in South Africa. Salmonella spp. were isolated and identified using microbiological and DNA molecular methods. Salmonella spp. were present in 29.0% of the samples of which 30.2% belonged to the Salmonella enterica species as confirmed by the positive amplification of the species specific iroB gene. Virulence genes that were screened from livestock-associated Salmonella were invA, iroB, spiC, pipD and int1. Statistically significant associations (p < 0.05) were established between the virulence genes, sampling location, animal host as well as the season when samples were collected. Furthermore, statistically significant (p < 0.05) positive correlations were observed between most of the virulence genes investigated. This is one of the recent studies to detect and investigate livestock-associated Salmonella spp. in South Africa. This study highlights the importance of continuous monitoring and surveillance for pathogenic salmonellae. It also demonstrated the detection and prevalence of virulent Salmonella spp. harbored by livestock in South Africa. This study demonstrated the potential risks of pathogenic Salmonella enterica to cause foodborne diseases and zoonotic infections from farm-to-fork continuum using the global one-health approach.
Collapse
Affiliation(s)
- Thobeka P Mthembu
- Discipline of Genetics, School of Life Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Oliver T Zishiri
- Discipline of Genetics, School of Life Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Mohamed E El Zowalaty
- Virology and Microbiology Research Group, College of Pharmacy City University College of Ajman, Al Tallah 2, Ajman, P.O. Box 18484, UAE.
| |
Collapse
|
6
|
Firoozeh F, Mahluji Z, Khorshidi A, Zibaei M. Molecular characterization of class 1, 2 and 3 integrons in clinical multi-drug resistant Klebsiella pneumoniae isolates. Antimicrob Resist Infect Control 2019; 8:59. [PMID: 30976386 PMCID: PMC6440154 DOI: 10.1186/s13756-019-0509-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/15/2019] [Indexed: 11/10/2022] Open
Abstract
Background The aim of this study was to characterize class 1,2 and 3 integrons in clinical MDR Klebsiella pneumoniae isolates in Kashan, Iran. Methods One hundred-eighty one Klebsiella pneumoniae were recovered from clinical specimens during November 2013 to October 2014. Antimicrobial susceptibility patterns were determined by disk diffusion method according to the Clinical and Laboratory Standards Institute (CLSI) guidelines for detection of MDR strains. Of the 181 Klebsiella pneumoniae, 146 (80.7%) of isolates were isolated from nosocomial infected patients and 150 (82.9%) identified as MDR isolates. The PCR amplification was used to show presence of class 1, 2 and 3 integrons among MDR strains. The PCR method and sequencing were used for evaluation of cassette content of integrons. Results Of the MDR K. pneumoniae isolates, 150 (100%) and 55 (36.7%) carried intI1 and intI2 genes, respectively. None of the MDR Klebsiella pneumoniae isolates carried class 3 integrons. Amplification of conserved segment (CS) of class 1 and class 2 integrons revealed 10 different arrays including: No. cassette; dfrA5, dfrA30; aadA2; aadA2, dfrA12; dfrA17, aadA5, aadA4; dfrA5, dfrA30, aadA2; dfrA5, dfrA30, aadA2, dfrA12, dfrA5, dfrA30, dfrA17, aadA5, aadA4; aadA2, aadA2, dfrA12; dfrA5, dfrA30, aadA2, aadA2, dfrA12 and 4 arrays including: No. cassette; aadA1; dfrA1-sat1; aadA1, dfrA1-sat1, respectively. Conclusions The finding of present study revealed a high prevalence of integrons especially class 1 among MDR K. pneumoniae isolates from nosocomial infections in Kashan, which led to rapid extension of MDR strains.
Collapse
Affiliation(s)
- Farzaneh Firoozeh
- 1Department of Microbiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran.,2Department of Microbiology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Zeinab Mahluji
- 2Department of Microbiology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Ahmad Khorshidi
- 2Department of Microbiology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Zibaei
- 3Evidence-based Phytotherapy & Complementary Medicine Research Center, Alborz University of Medical Sciences, Karaj, Iran.,4Department of Parasitology and Mycology, School of Medicine, Alborz University of Medical Sciences, P.O. Box: 3149779453, Karaj, Iran
| |
Collapse
|
7
|
V T Nair D, Venkitanarayanan K, Kollanoor Johny A. Antibiotic-Resistant Salmonella in the Food Supply and the Potential Role of Antibiotic Alternatives for Control. Foods 2018; 7:E167. [PMID: 30314348 PMCID: PMC6210005 DOI: 10.3390/foods7100167] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 01/21/2023] Open
Abstract
Salmonella enterica is one of the most ubiquitous enteropathogenic bacterial species on earth, and comprises more than 2500 serovars. Widely known for causing non-typhoidal foodborne infections (95%), and enteric (typhoid) fever in humans, Salmonella colonizes almost all warm- and cold-blooded animals, in addition to its extra-animal environmental strongholds. The last few decades have witnessed the emergence of highly virulent and antibiotic-resistant Salmonella, causing greater morbidity and mortality in humans. The emergence of several Salmonella serotypes resistant to multiple antibiotics in food animals underscores a significant food safety hazard. In this review, we discuss the various antibiotic-resistant Salmonella serotypes in food animals and the food supply, factors that contributed to their emergence, their antibiotic resistance mechanisms, the public health implications of their spread through the food supply, and the potential antibiotic alternatives for controlling them.
Collapse
Affiliation(s)
- Divek V T Nair
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108 USA.
| | | | - Anup Kollanoor Johny
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108 USA.
| |
Collapse
|
8
|
Antimicrobial resistance and resistance genes in Salmonella strains isolated from broiler chickens along the slaughtering process in China. Int J Food Microbiol 2017; 259:43-51. [DOI: 10.1016/j.ijfoodmicro.2017.07.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 06/15/2017] [Accepted: 07/31/2017] [Indexed: 02/07/2023]
|
9
|
Lo YT, Wang CL, Chen BH, Hu CW, Chou CH. Prevalence and Antimicrobial Resistance of Salmonella in Market Raw Oysters in Taiwan. J Food Prot 2017; 80:734-739. [PMID: 28358258 DOI: 10.4315/0362-028x.jfp-16-336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 01/01/2017] [Indexed: 11/11/2022]
Abstract
We tested 137 samples of domestic shucked oysters and 114 samples of imported oysters collected from traditional retail markets and supermarkets during 2010 and 2011 in Taiwan for the presence of Salmonella. We obtained a total of 91 Salmonella isolates, representing nine serotypes, from 80 of the domestic samples. We did not find any Salmonella in the imported oysters. The presence of Salmonella contamination tended to be specific to the area from which the oysters were harvested: the Dongshih area had a significantly higher contamination rate (68.8%) than the Budai (20.0%) and Wanggong (9.1%) areas. In addition, the rate of Salmonella contamination was higher in oysters that were packed or sold with water (P < 0.05). The most commonly identified Salmonella serotypes were Saintpaul (26.4%), Newport (22.0%), and Infantis (13.2%). We screened the isolates for susceptibility to nine antimicrobials and compared them genetically by using PCR for the class 1 integron (int1), tetA, tetB, and blaPSE-1 genes. Eighteen isolates (19.8%) were resistant to at least one antimicrobial agent, and the most frequent resistances were those to tetracycline and oxytetracycline (n = 12, 14.3%).We detected the antimicrobial resistance genes int1, tetA, tetB, and blaPSE-1 in 16.5, 26.4, 6.6, and 22.0% of the isolates, respectively. Eleven of the 18 antimicrobial-resistant isolates contained one or two int1 cassettes, suggesting that the presence of int1 is highly correlated with antimicrobial resistance in Salmonella isolates from oysters. The consumption of oysters is increasing in Taiwan, and information related to Salmonella contamination in oysters is rather limited. Our results indicate that raw oyster consumption from retail markets in Taiwan is associated with a human health hazard owing to Salmonella, including multidrug-resistant Salmonella strains.
Collapse
Affiliation(s)
- Yung-Tsun Lo
- Zoonoses Research Center and School of Veterinary Medicine, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei City, 106, Taiwan
| | - Chia-Lan Wang
- Zoonoses Research Center and School of Veterinary Medicine, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei City, 106, Taiwan
| | - Bai-Hsung Chen
- Zoonoses Research Center and School of Veterinary Medicine, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei City, 106, Taiwan
| | - Chung-Wen Hu
- Zoonoses Research Center and School of Veterinary Medicine, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei City, 106, Taiwan
| | - Chung-Hsi Chou
- Zoonoses Research Center and School of Veterinary Medicine, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei City, 106, Taiwan
| |
Collapse
|
10
|
Obaidat MM, Bani Salman AE. Antimicrobial Resistance Percentages of Salmonella and Shigella in Seafood Imported to Jordan: Higher Percentages and More Diverse Profiles in Shigella. J Food Prot 2017; 80:414-419. [PMID: 28199151 DOI: 10.4315/0362-028x.jfp-16-322] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This study determined the prevalence and antimicrobial resistance of human-specific ( Shigella spp.) and zoonotic ( Salmonella enterica ) foodborne pathogens in internationally traded seafood. Sixty-four Salmonella and 61 Shigella isolates were obtained from 330 imported fresh fish samples from Egypt, Yemen, and India. The pathogens were isolated on selective media, confirmed by PCR, and tested for antimicrobial resistance. Approximately 79 and 98% of the Salmonella and Shigella isolates, respectively, exhibited resistance to at least one antimicrobial, and 8 and 49% exhibited multidrug resistance (resistance to three or more antimicrobial classes). Generally, Salmonella exhibited high resistance to amoxicillin-clavulanic acid, cephalothin, streptomycin, and ampicillin; very low resistance to kanamycin, tetracycline, gentamicin, chloramphenicol, nalidixic acid, sulfamethoxazole-trimethoprim, and ciprofloxacin; and no resistance to ceftriaxone. Meanwhile, Shigella spp. exhibited high resistance to tetracycline, amoxicillin-clavulanic acid, cephalothin, streptomycin, and ampicillin; low resistance to kanamycin, nalidixic acid, sulfamethoxazole-trimethoprim, and ceftriaxone; and very low resistance to gentamicin and ciprofloxacin. Salmonella isolates exhibited 14 resistance profiles, Shigella isolates 42. This study is novel in showing that a human-specific pathogen has higher antimicrobial resistance percentages and more diverse profiles than a zoonotic pathogen. Thus, the impact of antimicrobial use in humans is as significant as, if not more significant than, it is in animals in spreading antibiotic resistance through food. This study also demonstrates that locally derived antimicrobial resistance can spread and pose a public health risk worldwide through seafood trade and that high resistance would make a possible outbreak difficult to control. So, capacity building and monitoring harvest water areas are encouraged in fish producing countries.
Collapse
Affiliation(s)
- Mohammad M Obaidat
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Alaa E Bani Salman
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan, 22110
| |
Collapse
|
11
|
Bae D, Kweon O, Khan AA. Isolation and Characterization of Antimicrobial-Resistant Nontyphoidal Salmonella enterica Serovars from Imported Food Products. J Food Prot 2016; 79:1348-54. [PMID: 27497122 DOI: 10.4315/0362-028x.jfp-15-564] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of this study was to determine antimicrobial resistance and elucidate the resistance mechanism in nontyphoidal Salmonella enterica serovars isolated from food products imported into the United States from 2011 to 2013. Food products contaminated with antimicrobial-resistant nontyphoidal S. enterica were mainly imported from Taiwan, Indonesia, Vietnam, and China. PCR, DNA sequencing, and plasmid analyses were used to characterize antimicrobial resistance determinants. Twentythree of 110 S. enterica isolates were resistant to various antimicrobial classes, including β-lactam, aminoglycoside, phenicol, glycopeptide, sulfonamide, trimethoprim, and/or fluoroquinolone antimicrobial agents. Twelve of the isolates were multidrug resistant strains. Antimicrobial resistance determinants blaTEM-1, blaCTX-M-9, blaOXA-1, tetA, tetB, tetD, dfrA1, dfrV, dhfrI, dhfrXII, drf17, aadA1, aadA2, aadA5, orfC, qnrS, and mutations of gyrA and parC were detected in one or more antimicrobial-resistant nontyphoidal S. enterica strains. Plasmid profiles revealed that 12 of the 23 antimicrobial-resistant strains harbored plasmids with incompatibility groups IncFIB, IncHI1, IncI1, IncN, IncW, and IncX. Epidemiologic and antimicrobial resistance monitoring data combined with molecular characterization of antimicrobial resistance determinants in Salmonella strains isolated from imported food products may provide information that can be used to establish or implement food safety programs to improve public health.
Collapse
Affiliation(s)
- Dongryeoul Bae
- U.S. Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, Arkansas 72079, USA
| | - Ohgew Kweon
- U.S. Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, Arkansas 72079, USA
| | - Ashraf A Khan
- U.S. Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, Arkansas 72079, USA.
| |
Collapse
|
12
|
Jayme M, Silva M, Sales A, Nunes M, Freitas-Almeida A, Araújo F. Survey of Pathogens Isolated from Mussels Perna Perna
Collected in Rocky Shore and Fishmarket of Niterói, RJ, and Their Respective Resistance Profile to Antimicrobial Drugs. J FOOD QUALITY 2016. [DOI: 10.1111/jfq.12204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- M.M.A. Jayme
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro; RJ Brazil
| | - M.M. Silva
- Faculdade de Formação de Professores, Departamento de Ciências, Universidade do Estado do Rio de Janeiro, São Gonçalo; RJ Brazil
| | - A. Sales
- Faculdade de Formação de Professores, Departamento de Ciências, Universidade do Estado do Rio de Janeiro, São Gonçalo; RJ Brazil
| | - M.C. Nunes
- Instituto de Quíımica, Universidade Federal do Rio de Janeiro, Rio de Janeiro; RJ Brazil
| | - A.C. Freitas-Almeida
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro; RJ Brazil
| | - F.V. Araújo
- Faculdade de Formação de Professores, Departamento de Ciências, Universidade do Estado do Rio de Janeiro, São Gonçalo; RJ Brazil
| |
Collapse
|
13
|
Firoozeh F, Zahraei-Salehi T, Shahcheraghi F. Molecular clonality and detection of class 1 integron in multidrug-resistant Salmonella enterica isolates from animal and human in Iran. Microb Drug Resist 2015; 20:517-24. [PMID: 24866249 DOI: 10.1089/mdr.2013.0198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
A total of 70 multidrug-resistant (MDR) Salmonella isolates (44 human and 26 poultry) were examined. The conserved segment-PCR, restriction fragment length polymorphism-PCR analysis, and DNA sequencing were used to determine the presence and cassette content of integrons. The genetic relatedness among the isolates was examined by pulsed-field gel electrophoresis (PFGE). The rate of integron carriage for MDR Salmonella isolates was 91.4% and integron-positive isolates belonged to six distinct serovars. Out of 64 integron-positive isolates, only four Salmonella Paratyphi C isolates could transfer integrons to Escherichia coli K12 by conjugation. Thirty-three PFGE types were detected in 52 integron-positive isolates, including 22, 4, 3, 2, 1, and 1 patterns among Salmonella serovars Enteritidis, Typhimurium, Paratyphi C, Paratyphi B, Paratyphi A, and Havana, respectively. The human and poultry Salmonella Enteritidis isolates from different regions with identical integrons had closely related PFGE patterns. Of the four integron-positive Salmonella Typhimurium isolates, the two poultry isolates with identical integron had very closely related PFGE patterns whereas the two human isolates with different integrons showed unrelated PFGE patterns. PFGE showed undistinguishable patterns in Salmonella Paratyphi C isolates with identical cassettes but revealed relatively unrelated patterns in those with different cassettes. Relatively unrelated and identical PFGE patterns were found in two Salmonella Paratyphi B and three Salmonella Paratyphi A isolates with the same integrons, respectively. In conclusion, PFGE patterns demonstrated more genetic relatedness among each Salmonella serovar with identical class 1 integrons than the same serovar with different class 1 integrons.
Collapse
Affiliation(s)
- Farzaneh Firoozeh
- 1 Department of Microbiology and Immunology, School of Medicine, Kashan University of Medical Sciences , Kashan, I.R. Iran
| | | | | |
Collapse
|
14
|
Bae D, Cheng CM, Khan AA. Characterization of extended-spectrum β-lactamase (ESBL) producing non-typhoidal Salmonella (NTS) from imported food products. Int J Food Microbiol 2015. [PMID: 26210532 DOI: 10.1016/j.ijfoodmicro.2015.07.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Food contaminated with extended-spectrum β-lactamase (ESBL)-producing Salmonella enterica has emerged as an important global issue due to the international food-product trade. Therefore, the purpose of this study was to investigate whether imported food products can serve as a reservoir for non-typhoidal Salmonella (NTS) that can transmit β-lactam-resistance to humans through ingestion of the contaminated food. NTS isolates (n=110) were collected from various imported food products (n=3480) from 2011 to 2013. The NTS isolates were analyzed by serotyping, antimicrobial susceptibility tests, and plasmid profiling. Salmonella ser. Weltevreden, Salmonella ser. Newport, Salmonella ser. Senftenberg, Salmonella ser. Virchow, Salmonella ser. Enteritidis, Salmonella ser. Typhimurium, and Salmonella ser. Bareilly were the most prevalent serovars. Nine NTS strains were resistant to ampicillin and/or one or more cephalosporins (MIC>32 μg/mL). Polymerase chain reaction (PCR) detection revealed that all nine isolates carried the bla(TEM-1) β-lactamase gene, with or without the bla(CTX-M-9) or bla(OXA-1) genes. Two isolates, PSS_913 and PSS_988, exhibited decreased susceptibility to extended-spectrum cephalosporins and ampicillin. Plasmids ranging in size from less than 8 to over 165 kbp, from all of the 9 resistant isolates, belonged to the IncHI1, IncI1, IncN, or IncX groups. Conjugation experiments and Southern hybridization, using bla(TEM-1), confirmed the plasmid-mediated transfer of ESBL genes, which resulted in increased MICs of β-lactams for Escherichia coli transconjugants. The contamination of imported food products by NTS with conjugative plasmid-borne ESBL genes may contribute to the spread of ESBL-producing NTS and compromise the therapeutic activity of extended-spectrum β-lactam antibiotics.
Collapse
Affiliation(s)
- Dongryeoul Bae
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
| | - Chorng-Ming Cheng
- Pacific Regional Laboratory-Southwest, U.S. Food and Drug Administration, Irvine, CA 92612, United States
| | - Ashraf A Khan
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States.
| |
Collapse
|
15
|
Zhang J, Yang X, Kuang D, Shi X, Xiao W, Zhang J, Gu Z, Xu X, Meng J. Prevalence of antimicrobial resistance of non-typhoidal Salmonella serovars in retail aquaculture products. Int J Food Microbiol 2015; 210:47-52. [PMID: 26093990 DOI: 10.1016/j.ijfoodmicro.2015.04.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 04/10/2015] [Accepted: 04/11/2015] [Indexed: 11/18/2022]
Abstract
Aquaculture products can become sources of Salmonella by exposure to contaminated water or through processing practices, thus representing a public health hazard. A study was conducted on Salmonella contamination in aquaculture products sampled from marketplaces and retailers in Shanghai, China. A total of 730 samples (including fish, shellfish, bullfrog, clam, shrimp and others) were obtained from 2006 to 2011. Among them, 217 (29.7%) were positive for Salmonella. Thirty-eight serovars were identified in the 217 Salmonella isolates. The most prevalent were Salmonella Aberdeen (18.4%), S. Wandsworth (12.0%), S. Thompson (9.2%), S. Singapore (5.5%), S. Stanley (4.6%), S. Schwarzengrund (4.6%), S. Hvittingfoss (4.1%) and S. Typhimurium (4.1%). Many resistant isolates were detected, with 69.6% resistant to at least one antimicrobial drug. We observed high resistance to sulfonamides (56.5%), tetracycline (34.1%), streptomycin (28.6%), ampicillin (23.5%) and nalidixic acid (21.2%). Lower levels of resistance were found for gentamicin (3.2%), ciprofloxacin (2.3%), ceftiofur (1.3%), cefotaxime (0.9%), ceftazidime (0.5%) and cefepime (0.5%). A total of 43.3% of the Salmonella isolates were multidrug-resistant and 44 different resistance patterns were found. This study provided data on the prevalence, serovars and antimicrobial resistance of Salmonella from retail aquaculture products in Shanghai, and indicated the need for monitoring programs for microbiologic safety in such projects and for more prudent drug use in aquaculture production in order to reduce the risk of development and spread of antimicrobial resistance.
Collapse
Affiliation(s)
- Jianmin Zhang
- Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China; Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaowei Yang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Dai Kuang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xianming Shi
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Wenjia Xiao
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Jing Zhang
- The Center for Disease Control and Prevention of Hongkou District, Shanghai, China
| | - Zhen Gu
- Emerging Infections Program China Office, China
| | - Xuebin Xu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
| | - Jianghong Meng
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China; Department of Food Science and Nutrition, University of Maryland, College Park, MD, USA.
| |
Collapse
|
16
|
Oplinger RW, Wagner EJ, Cavender W. Use of Penicillin and Streptomycin to Reduce Spread of Bacterial Coldwater Disease II: Efficacy of Using Antibiotics in Diluents and During Water Hardening. JOURNAL OF AQUATIC ANIMAL HEALTH 2015; 27:32-37. [PMID: 25581260 DOI: 10.1080/08997659.2014.945049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bacterial coldwater disease, caused by Flavobacterium psychrophilum, has lead to the loss of significant numbers of hatchery-reared salmonids. The bacteria can be spread from parent to progeny within contaminated sperm and ovarian fluid and can enter the egg during fertilization. The addition of antibiotics to diluents and water-hardening solutions could prevent the spread of the disease. In separate trials, a mixture of 0.197 mg/mL penicillin plus 0.313 mg/mL streptomycin was added to both a 0.5% sodium chloride fertilization diluent and hatchery well water during hardening. Tests showed that the addition of the antibiotics to the diluent and during up to 60 min of water hardening had no effect on the eye-up, hatch and deformity rates of Rainbow Trout Oncorhynchus mykiss eggs compared with the nonantibiotic-treated controls. Also, significant reductions in the prevalence of F. psychrophilum on the surface and inside eggs were observed when compared with controls. These results indicate that the addition of penicillin and streptomycin to diluents and during water hardening can prevent the vertical transmission of bacterial coldwater disease.
Collapse
Affiliation(s)
- Randall W Oplinger
- a Utah Division of Wildlife Resources, Fisheries Experiment Station, 1465 West 200 North , Logan , Utah 84321 , USA
| | | | | |
Collapse
|
17
|
Done HY, Halden RU. Reconnaissance of 47 antibiotics and associated microbial risks in seafood sold in the United States. JOURNAL OF HAZARDOUS MATERIALS 2015; 282:10-7. [PMID: 25449970 PMCID: PMC4254636 DOI: 10.1016/j.jhazmat.2014.08.075] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 07/16/2014] [Accepted: 08/12/2014] [Indexed: 05/04/2023]
Abstract
Aquaculture production has nearly tripled in the last two decades, bringing with it a significant increase in the use of antibiotics. Using liquid chromatography/tandem mass spectrometry (LC-MS/MS), the presence of 47 antibiotics was investigated in U.S. purchased shrimp, salmon, catfish, trout, tilapia, and swai originating from 11 different countries. All samples (n=27) complied with U.S. FDA regulations and five antibiotics were detected above the limits of detection: oxytetracycline (in wild shrimp, 7.7ng/g of fresh weight; farmed tilapia, 2.7; farmed salmon, 8.6; farmed trout with spinal deformities, 3.9), 4-epioxytetracycline (farmed salmon, 4.1), sulfadimethoxine (farmed shrimp, 0.3), ormetoprim (farmed salmon, 0.5), and virginiamycin (farmed salmon marketed as antibiotic-free, 5.2). A literature review showed that sub-regulatory levels of antibiotics, as found here, can promote resistance development; publications linking aquaculture to this have increased more than 8-fold from 1991 to 2013. Although this study was limited in size and employed sample pooling, it represents the largest reconnaissance of antibiotics in U.S. seafood to date, providing data on previously unmonitored antibiotics and on farmed trout with spinal deformities. Results indicate low levels of antibiotic residues and general compliance with U.S. regulations. The potential for development of microbial drug resistance was identified as a key concern and research priority.
Collapse
Affiliation(s)
- Hansa Y Done
- Center for Environmental Security, The Biodesign Institute, Security and Defense Systems Initiative, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, USA
| | - Rolf U Halden
- Center for Environmental Security, The Biodesign Institute, Security and Defense Systems Initiative, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, USA; Department of Environmental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
| |
Collapse
|
18
|
Mandal J, Akhter MZ, Kabir MS, Ahsan S. Development of a multiplex polymerase chain reaction protocol for the simultaneous detection of Salmonella enterica serovar Typhi and Class 1 integron. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2014. [DOI: 10.1016/s2222-1808(14)60732-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Tseng CS, Yen YC, Chang CC, Hsu YM. Polymorphism of gene cassette promoter variants of class 1 integron harbored in S. Choleraesuis and Typhimurium isolated from Taiwan. Biomedicine (Taipei) 2014; 4:20. [PMID: 25520933 PMCID: PMC4264977 DOI: 10.7603/s40681-014-0020-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 06/26/2014] [Indexed: 11/06/2022] Open
Abstract
Integrons, mobile genetic units, capture and incorporate antibiotic resistance gene cassette by site-specific recombination. Class 1 integrons are widespread and associated with dispersion of antibiotic resistance among Gram-negative bacteria. The expression of gene cassette in Class 1 can vary, based on the Pc promoter but seldom from another promoter hiding downstream of Pc, called P2. To probe distribution and prevalence of gene cassette promoter variants, we analyzed 169 S. Choleraesuis and 191 S. Typhimurium isolates from humans and animals, finding 95.27% occurrence of integrin among S. Choleraesuis, 83.25% among S. Typhimurium. PCR-RFLP analysis identified four promoters (PcS+P2, PcWTGN-10+P2, PcH1+P2, and PcWTGN-10+P2-GGG) in said integron-positive isolates; major types in S. Choleraesuis and S. Typhimurium were PcS+P2 and PcWTGN-10+P2, respectively. Likewise, β-galactosidase assay rated promoter strength of variants by transcriptional fusion constructs to show extended -10 promoter (TGn/-10 promoter) in Pc and three-nucleotide insertion (GGG) between -35 and -10 region of P2 improving promoter strength of gene cassette.
Collapse
Affiliation(s)
- Chih-Sian Tseng
- Department of Biological Science and Technology, College of Life Sciences, China Medical University, Taichung, Taiwan
| | - Yu-Chieh Yen
- Graduate Institute of Microbiology and Public Health, School of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chao-Chin Chang
- Graduate Institute of Microbiology and Public Health, School of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yuan-Man Hsu
- Department of Biological Science and Technology, College of Life Sciences, China Medical University, Taichung, Taiwan
| |
Collapse
|
20
|
Mezal EH, Bae D, Khan AA. Detection and functionality of the CdtB, PltA, and PltB from Salmonella enterica serovar Javiana. Pathog Dis 2014; 72:95-103. [PMID: 24891290 DOI: 10.1111/2049-632x.12191] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 05/23/2014] [Accepted: 05/23/2014] [Indexed: 11/27/2022] Open
Abstract
Salmonella infection is one of the major foodborne illnesses in the United States. Several Gram-negative bacterial pathogens, including Salmonella Typhi, produce cytolethal distending toxin (CDT), which arrests growth, induces apoptosis of infected host cells and extends persistence of pathogenic bacteria in the host. The aim of this study was to characterize the functionality of CDT (cdtB, pltA and pltB) from nontyphoidal Salmonella isolates. Fifty Salmonella enterica serovar Javiana isolates from food, environmental, and clinical samples were screened for cdtB, pltA, and pltB genes by PCR, and all were positive for all three genes. Nucleotide sequence analysis of all amplified PCR products showed 100% identity to S. Typhi cdtB. To understand the roles of CdtB, PltA, and PltB in S. Javiana, cdtB, pltA, and pltB deletion mutants were constructed using a lambda Red-based recombination system. In vitro-cultured HeLa cell lines were infected with a wild-type strain and its isogenic ∆cdtB, ∆pltA, and ∆pltB to determine whether the strains of S. Javiana are responsible for invasion and cytolethal distending intoxication, including cell cycle arrest, cytoplasmic distension, and nuclear enlargement of host target cells. The results showed that HeLa cells infected with S. Javiana wild type were arrested in G2 /M and had distended cytoplasm and nuclei that were larger than those infected with S. Javiana ∆cdtB and ∆pltA strains. The S. Javiana ∆pltB strain retained the ability to induce cytoplasmic distension and cell cycle arrest, whereas the complemented ∆cdtB and ∆pltA S. Javiana strains showed activity like the wild-type strains. CdtB and pltA from S. Javiana had apparent effects on the distension of both cytoplasm and nucleus as well as cell cycle arrest of HeLa cell lines after 72 h of infection. Our data show a significant difference between the wild-type cdtB strain and its isogenic ∆cdtB for invasion of the cell lines. Therefore, CdtB produced from S. Javiana strains may play an important role in pathogenesis in host cells.
Collapse
Affiliation(s)
- Ezat H Mezal
- Division of Microbiology, National Center for Toxicological Research, U. S. Food and Drug Administration, Jefferson, AR, USA; University of Arkansas at Little Rock, Little Rock, AR, USA; University of Thi-Qar, Thi-Qar, Iraq
| | | | | |
Collapse
|
21
|
Asgharpour F, Rajabnia R, Ferdosi Shahandashti E, Marashi MA, Khalilian M, Moulana Z. Investigation of Class I Integron in Salmonella infantis and Its Association With Drug Resistance. Jundishapur J Microbiol 2014; 7:e10019. [PMID: 25147710 PMCID: PMC4138636 DOI: 10.5812/jjm.10019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 04/24/2013] [Accepted: 06/01/2013] [Indexed: 11/16/2022] Open
Abstract
Background: Infection with non-typhoid Salmonella (NTS) is one of the most important health problems all over the world. Antimicrobial drug resistance is increasing among Salmonella infantis species. Objectives: The aim of this study was to investigate the frequency of presence of class 1 integrons in S. infantis species as well as its association with drug resistance. Materials and Methods: This cross-sectional study was performed on 50 S. infantis isolated strains, collected from chicken samples between 2009-2011. These strains were identified by standard biochemical tests and serology. Antibiotic susceptibility profiles and minimum inhibitory concentration determination for 14 antibacterial agents were performed using micro dilution and disk diffusion methods. The detection of class 1 integron was performed by the PCR method. The demographic and microbiological data for the integron positive and negative isolates were compared by SPSS software. Results: Eighteen out of 50 (36%) of isolated S. infantis species had intl gene. The isolated bacteria were sensitive to cefotaxime and ciprofloxacin (100%). Also isolates were resistant to nalidixic acid, tetracycline and streptomycin. All isolate with class 1 integron were multidrug resistant. Conclusions: The result of this study showed that due to increased level of drug resistance in S. infantis and the presence of class 1 integron in these strains, resistance can be transferred to other food borne pathogens.
Collapse
Affiliation(s)
- Fariba Asgharpour
- Department of Microbiology,paramedical Sciences,Babol University of Medical Sciences,Babol, IR Iran
| | - Ramazan Rajabnia
- Infectious Diseases Research Center, Babol University of Medical Sciences, Babol, IR Iran
| | - Elaheh Ferdosi Shahandashti
- Department of Microbiology & Immunology, Faculty of Medicine, Babol University of Medical Sciences, Babol, IR Iran
| | - Mahmood Amin Marashi
- Department of Microbiology and Immunology, Alborz University of Medical Sciences, Karaj, IR Iran
| | - Mahya Khalilian
- Department of Pathobiology, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Zahra Moulana
- Infectious Diseases Research Center, Babol University of Medical Sciences, Babol, IR Iran
- Corresponding author: Zahra Moulana, Infection Diseases Research Center, Babol University of Medical Sciences, Babol, IR Iran. Tel: +98-1113268528; +98-9113130045, Fax: +98-1113234367, E-mail:
| |
Collapse
|
22
|
Hsu YM, Tang CY, Lin H, Chen YH, Chen YL, Su YH, Chen DS, Lin JH, Chang CC. Comparative study of class 1 integron, ampicillin, chloramphenicol, streptomycin, sulfamethoxazole, tetracycline (ACSSuT) and fluoroquinolone resistance in various Salmonella serovars from humans and animals. Comp Immunol Microbiol Infect Dis 2012; 36:9-16. [PMID: 22963790 DOI: 10.1016/j.cimid.2012.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 08/11/2012] [Accepted: 08/16/2012] [Indexed: 10/27/2022]
Abstract
A total of 499 Salmonella isolates including 9 serovars from humans and various animal hosts were collected to compare prevalence of integron and antimicrobial resistance. The integron and gene cassette were detected by PCR, and then the gene cassette type was further determined by sequencing and restriction fragment length polymorphism (RFLP) analysis. The antimicrobial susceptibility test was conducted by disk diffusion method. The positivity percentage of class 1 integron and the diversity of gene cassettes carried by integron were quite different in various Salmonella serovars, especially comparing those from animals to humans. After sequencing and RFLP analysis, it was identified eight gene cassette types. The gene cassette type D carrying ampicillin/streptomycin resistance genes was the most common one (42.2%) in the integron-positive isolates. More diversity of gene cassette types was identified in humans comparing to that in animals. Several gene cassette types were identified for the first time in some Salmonella serovars. In this study, 31.5% (157/499) of the isolates were multi-resistant to ampicillin, chloramphenicol, streptomycin, sulfamethoxazole, and tetracycline (ACSSuT). S. Choleraesuis isolates with the cassette type A1, but S. Typhimurium isolates with the cassette type E1, were frequently associated with ACSSuT-resistant (80.6% and 72.7%, respectively). There was a significant association between the presence of class 1 integron and quinolone resistance in S. Choleraesuis isolates, but not in S. Typhimurium. Our findings imply that transmission efficiency of various gene cassettes through the integron could be different in various Salmonella serovars.
Collapse
Affiliation(s)
- Yuan-Man Hsu
- Department of Biological Science and Technology, College of Life Sciences, China Medical University, Taichung, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Identification and molecular characterization of class 1 integrons in multiresistant Escherichia coli isolates from poultry litter. Appl Environ Microbiol 2012; 78:5444-7. [PMID: 22635994 DOI: 10.1128/aem.00660-12] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study describes the prevalence of arrays of class 1 integron cassettes and Qnr determinants (A, B, and S) in 19 fluoroquinolone-resistant Escherichia coli isolates from chicken litter. qnrS and qnrA were the predominant genes in these fluoroquinolone-resistant isolates, and an uncommon array of aacA4-catB3-dfrA1 gene cassettes from a class1 integron was found. Additionally, aadA1 and dfrA1 gene cassettes, encoding resistance to streptomycin and trimethoprim, constituted the most common genes identified and was located on megaplasmids as well on the chromosome. Antibiotic resistance, pulsed-field gel electrophoresis (PFGE), and plasmid data suggest a genetically diverse origin of poultry E. coli isolates.
Collapse
|
24
|
Deekshit V, Kumar B, Rai P, Srikumar S, Karunasagar I, Karunasagar I. Detection of class 1 integrons in Salmonella Weltevreden and silent antibiotic resistance genes in some seafood-associated nontyphoidal isolates of Salmonella in south-west coast of India. J Appl Microbiol 2012; 112:1113-22. [DOI: 10.1111/j.1365-2672.2012.05290.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Kakatkar A, Pansare L, Gautam R, Shashidhar R, Karani M, Bandekar J. Molecular characterization of antibiotic resistant Salmonella isolates from Indian foods. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
26
|
Wang F, Jiang L, Yang Q, Han F, Chen S, Pu S, Vance A, Ge B. Prevalence and antimicrobial susceptibility of major foodborne pathogens in imported seafood. J Food Prot 2011; 74:1451-61. [PMID: 21902913 DOI: 10.4315/0362-028x.jfp-11-146] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Seafood is a leading commodity implicated in foodborne disease outbreaks in the United States. Seafood importation rose dramatically in the past 3 decades and now contributes to more than 80% of the total U.S. seafood supply. However, limited data are available on the microbiological safety of imported seafood. In this study, we obtained a total of 171 salmon, shrimp, and tilapia samples imported from 12 countries in three retail stores in Baton Rouge, LA. The total microbial population and the prevalence and antimicrobial susceptibilities of six major foodborne-pathogen genera (Campylobacter, Escherichia coli, Listeria, Salmonella, Shigella, and Vibrio) were determined. The aerobic plate counts (APC) for the 171 samples averaged 4.96 log CFU/g, with samples from Chile carrying the highest mean APC of 6.53 log CFU/g and fresh samples having a significantly higher mean APC than frozen ones (P < 0.0001). There were 27 samples (15.8%) with unacceptable microbiological quality (APC > 7 log CFU/g). By culture, no sample tested positive for Campylobacter coli, Shigella, or Vibrio vulnificus. Campylobacter jejuni and Salmonella enterica serovar Typhimurium were each recovered once from farm-raised tilapia from China. By PCR, 17.5 and 32.2% of the samples were positive for Salmonella and Shigella, respectively. The overall prevalence rates of other target bacteria were low, ranging from 4.1% for Listeria monocytogenes to 9.4% for E. coli. All of the Vibrio parahaemolyticus isolates recovered were from shrimp, and 63.3% showed intermediate resistance to ampicillin. Both C. jejuni isolates possessed a rare resistance to gentamicin, while 75% of L. monocytogenes isolates were resistant to nitrofurantoin. Taken together, these findings suggest potential food safety hazards associated with imported seafood and warrant further large-scale studies.
Collapse
Affiliation(s)
- Fei Wang
- Department of Food Science, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, USA
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Molecular basis of sulfonamide and trimethoprim resistance in fish-pathogenic Aeromonas isolates. Appl Environ Microbiol 2011; 77:7147-50. [PMID: 21764945 DOI: 10.1128/aem.00560-11] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sulfonamide-trimethoprim-resistant Aeromonas salmonicida and motile Aeromonas spp. from diseased fish of the GERM-Vet study carried the sul1 gene together with mostly cassette-borne trimethoprim resistance genes, including the novel gene dfrA28. The seven dfrA and dfrB genes identified were located mostly in class 1 integrons which commonly harbored other gene cassettes.
Collapse
|
28
|
Meng H, Zhang Z, Chen M, Su Y, Li L, Miyoshi SI, Yan H, Shi L. Characterization and horizontal transfer of class 1 integrons in Salmonella strains isolated from food products of animal origin. Int J Food Microbiol 2011; 149:274-7. [PMID: 21802160 DOI: 10.1016/j.ijfoodmicro.2011.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 04/26/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
Abstract
A total of 81 Salmonella isolates from retail meats and seafood in Hebei province, China, were assayed for the presence of and horizontal transfer of class 1 integrons. By the PCR screening for the integrons, class 1 integron was detected from strains in serotypes of Derby, Indiana, London and Choleraesuis, which were isolated from pork, chicken or seafood; however, two isolates contained the empty integron that lacked the resistance cassette, a potential hotspot for development of the multidrug resistance. In contrast, two other isolates had the antibiotic resistance gene cassettes within the class 1 integron, which were dfrA1-aadA1 and aadB-cmlA, respectively. The conjugation experiments demonstrated the plasmid-mediated transfer of the class 1 integrons. Furthermore, each of the integrons was transmitted to Streptococcus mutans via natural gene transformation. These findings suggest the possible transfer of class 1 integrons from foodborne pathogens to human residential bacteria via horizontal gene transfer.
Collapse
Affiliation(s)
- Hecheng Meng
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Ranjbar R, Giammanco GM, Farshad S, Owlia P, Aleo A, Mammina C. Serotypes, antibiotic resistance, and class 1 integrons in Salmonella isolates from pediatric cases of enteritis in Tehran, Iran. Foodborne Pathog Dis 2011; 8:547-53. [PMID: 21204690 DOI: 10.1089/fpd.2010.0736] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present study was conducted to investigate serotype distribution, antimicrobial resistance patterns, carriage of class 1 integron, and clonality of Salmonella strains isolated from patients aged 0-12 years in Tehran, Iran, during 2007-2008. A total of 139 Salmonella isolates were studied. Salmonella serotypes Enteritidis, Infantis, and Typhimurium included 84.9% of isolates, Enteritidis accounting for 41.7%. The most prevalent resistances were to doxycycline (64.7%), nalidixic acid (61.2%), tetracycline (51.8%), and streptomycin (42.8%). Fifty-three (38.1%) isolates contained class 1 integron. Eight different gene cassettes were identified, aadA1 being the most frequently encountered. Pulsed-field gel electrophoresis showed that integron-positive Salmonella strains belonging to serotypes Infantis, Enteritidis, and Typhimurium were attributed to two, three, and five different pulsotypes, respectively. The findings indicated that the distribution and drug resistance pattern of most prevalent Salmonella serotypes were broadly similar to that reported globally from human isolates. Presence of class 1 integrons was common among Salmonella serotypes in Tehran, Iran. Concurrent clonal expansion and horizontal transmission events seem to contribute to increase in drug resistance prevalence among Salmonella serotypes.
Collapse
Affiliation(s)
- Reza Ranjbar
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
30
|
Kansakar P, Dorji D, Chongtrakool P, Mingmongkolchai S, Mokmake B, Dubbs P. Local dissemination of multidrug-resistant Acinetobacter baumannii clones in a Thai hospital. Microb Drug Resist 2010; 17:109-19. [PMID: 21117966 DOI: 10.1089/mdr.2010.0062] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A total of 83 Acinetobacter baumannii isolates from patients attending a tertiary care university hospital in Thailand were investigated for their clonal relatedness, antimicrobial susceptibility profiles, and integron carriage. Susceptibility profiles showed that 56 (67%) of these isolates exhibited multiple drug resistance (MDR). Pulsed-field gel electrophoresis (PFGE) showed that 73% of these resistant isolates were clustered into three predominant PFGE types: 6, 7, and 36. This suggested that the high number of isolates exhibiting MDR phenotypes observed in the hospital is, to some extent, due to the spread of these three resistant clones. Class 1 integrase genes were detected in all MDR isolates belonging to PFGE type 6, most MDR isolates belonging to PFGE type 7 and none of the isolates belonging to PFGE type 36. Five different class 1 gene cassette arrays, dfrA1-orfC, bla(IMP-14)-aac6', aacA4- catB8-aadA1, aacC1-orfX-orfX'-aadA1a, and aacC1-orfX-orfX-orfX'-aadA1a, were identified, of which the bla(IMP-14)-aac6' array has only been found in Thai isolates. Two isolates identified in this study carried a class 2 integrase gene with a 2.2 kb cassette array containing aadA1-sat-dfrA1.
Collapse
Affiliation(s)
- Palpasa Kansakar
- Department of Microbiology and Center for Emerging Bacterial Infections, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | | | | | | | | |
Collapse
|