1
|
Rehman MU, Zhang H, Huang S, Iqbal MK, Mehmood K, Luo H, Li J. Characteristics of Integrons and Associated Gene Cassettes in Antibiotic-Resistant Escherichia coli
Isolated from Free-Ranging Food Animals in China. J Food Sci 2017. [DOI: 10.1111/1750-3841.13795] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mujeeb Ur Rehman
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
| | - Hui Zhang
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
| | - Shucheng Huang
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
| | - Muhammad Kashif Iqbal
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
| | - Khalid Mehmood
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
- Univ. College of Veterinary & Animal Sciences; Islamia Univ. of Bahawalpur; 63100 Punjab Pakistan
| | - Houqiang Luo
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
| | - Jiakui Li
- College of Veterinary Medicine; Huazhong Agricultural Univ.; Wuhan 430070 P.R. China
- Laboratory of Detection and Monitoring of Highland Animal Diseases; Tibet Agricultural and Animal Husbandry College; Linzhi 860000 Tibet P.R. China
| |
Collapse
|
2
|
de la Torre E, Colello R, Padola NL, Etcheverría A, Rodríguez E, Amanto F, Tapia MO, Soraci AL. Detection of Integrase Gene in E. coli Isolated from Pigs at Different Stages of Production System. Int J Microbiol 2014; 2014:489569. [PMID: 24734046 PMCID: PMC3966330 DOI: 10.1155/2014/489569] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/10/2013] [Accepted: 02/04/2014] [Indexed: 12/02/2022] Open
Abstract
Integrons are one of the genetic elements involved in the acquisition of antibiotic resistance. The aim of the present research is to investigate the presence of integrons in commensal Escherichia coli (E. coli) strains, isolated from pigs at different stages of production system and from the environment in an Argentinian farm. Five sows postpartum and five randomly chosen piglets from each litter were sampled by rectal swabs. They were sampled again at day 21 and at day 70. Environmental samples from the farm were also obtained. E. coli containing any integron class or combination of both integrons was detected by polymerase chain reaction in 100% of sows and in piglets at different stages of production: farrowing pen stage 68.1%;, weaning 60%, and growing/finishing 85.8%, showing an increase along the production system. From environmental samples 78.4% of E. coli containing any integron class was detected. We conclude that animals and farm environment can act as reservoirs for potential spread of resistant bacteria by means of mobile genetic elements as integrons, which has a major impact on production of food animals and that can reach man through the food chain, constituting a problem for public health.
Collapse
Affiliation(s)
- Eulalia de la Torre
- Área de Toxicología, Departamento de Fisiopatología, Centro de Investigación Veterinaria de Tandil-Consejo Nacional de Investigaciones Científicas y Técnicas-Comisión de Investigaciones Científicas Provincia de Buenos Aires (CIVETAN-CONICET-CICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNICEN), Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Rocío Colello
- Área de Inmunoquímica y Biotecnología, Departamento de Sanidad Animal y Medicina Preventiva (SAMP), CIVETAN-CONICET-CICPBA, Facultad de Ciencias Veterinarias, UNICEN, Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Nora Lía Padola
- Área de Inmunoquímica y Biotecnología, Departamento de Sanidad Animal y Medicina Preventiva (SAMP), CIVETAN-CONICET-CICPBA, Facultad de Ciencias Veterinarias, UNICEN, Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Analía Etcheverría
- Área de Inmunoquímica y Biotecnología, Departamento de Sanidad Animal y Medicina Preventiva (SAMP), CIVETAN-CONICET-CICPBA, Facultad de Ciencias Veterinarias, UNICEN, Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Edgardo Rodríguez
- Área de Bioestadística, Departamento de SAMP, CIVETAN-CONICET-CICPBA, Facultad de Ciencias Veterinarias, UNICEN, Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Fabián Amanto
- Área de Producción Porcina, Departamento de Producción Animal, Facultad de Ciencias Veterinarias, UNICEN, Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - María Ofelia Tapia
- Área de Toxicología, Departamento de Fisiopatología, Centro de Investigación Veterinaria de Tandil-Consejo Nacional de Investigaciones Científicas y Técnicas-Comisión de Investigaciones Científicas Provincia de Buenos Aires (CIVETAN-CONICET-CICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNICEN), Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| | - Alejandro Luis Soraci
- Área de Toxicología, Departamento de Fisiopatología, Centro de Investigación Veterinaria de Tandil-Consejo Nacional de Investigaciones Científicas y Técnicas-Comisión de Investigaciones Científicas Provincia de Buenos Aires (CIVETAN-CONICET-CICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNICEN), Campus Universitario, Paraje Arroyo Seco s/n, Tandil, Argentina
| |
Collapse
|
3
|
Marchant M, Vinué L, Torres C, Moreno MA. Change of integrons over time in Escherichia coli isolates recovered from healthy pigs and chickens. Vet Microbiol 2012; 163:124-32. [PMID: 23290120 DOI: 10.1016/j.vetmic.2012.12.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 12/06/2012] [Accepted: 12/08/2012] [Indexed: 11/19/2022]
Abstract
The aims of this study were (a) to perform a time-related quantitative analysis of relative integron frequencies in intestinal Escherichia coli isolates from food animals (pigs and chickens) and (b) to analyse putative relationships between integrons, antimicrobial resistance and phylogenetic groups. The E. coli collection of the Spanish Veterinary Antimicrobial Resistance Surveillance Network was used to extract 393 intestinal isolates from healthy pigs and chickens belonging to the oldest (1998/99) and the latest (2006) available surveillance programs, and their quantitative antimicrobial resistance data. PCR and sequencing were used for detection and characterisation of integrons. Integron overall relative frequencies ranged between 80% and 49%, being higher in pig than in chicken E. coli isolates in both periods. Time-related analysis showed no variations when considering overall frequencies (80% versus 75% in pig E. coli isolates and 49% versus 51% in E. coli chicken isolates). Apart from the 3'-integron sul gene, six different antimicrobial-related gene cassettes (with different variants) were detected in the sequenced integron variable regions: aadA, dfrA, and sat in classes 1 and 2, and cmlA, linF and aadB only in class 1. Multiresistance profiles showed a high association between antimicrobial resistance and integron presence for those antimicrobials corresponding to the antimicrobial-related gene cassettes detected (streptomycin, trimethoprim, chloramphenicol, plus sulphonamides). However, the presence of integrons was also associated with resistance to amoxicillin and tetracycline, two antimicrobials that are widely used in animals but not linked to these genetic elements.
Collapse
Affiliation(s)
- Mauricio Marchant
- VISAVET, Centro de Vigilancia Sanitaria Veterinaria, Universidad Complutense de Madrid, Spain
| | | | | | | |
Collapse
|
4
|
Dynamics and diversity of Escherichia coli in animals and system management of the manure on a commercial farrow-to-finish pig farm. Appl Environ Microbiol 2012; 79:853-9. [PMID: 23160136 DOI: 10.1128/aem.02866-12] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The objective of this study was to determine the dynamics and diversity of Escherichia coli populations in animal and environmental lines of a commercial farrow-to-finish pig farm in Spain along a full production cycle (July 2008 to July 2009), with special attention to antimicrobial resistance and the presence of integrons. In the animal line, a total of 256 isolates were collected from pregnant sows (10 samples and 20 isolates), 1-week-old piglets (20 samples and 40 isolates), unweaned piglets (20 samples and 38 isolates), growers (20 samples and 40 isolates), and the finishers' floor pen (6 samples and 118 isolates); from the underfloor pits and farm slurry tank environmental lines, 100 and 119 isolates, respectively, were collected. Our results showed that E. coli populations in the pig fecal microbiota and in the farm environment are highly dynamic and show high levels of diversity. These issues have been proven through DNA-based typing data (repetitive extragenic palindromic PCR [REP-PCR]) and phenotypic typing data (antimicrobial resistance profile comprising 19 antimicrobials). Clustering of the sampling groups based on their REP-PCR typing results showed that the spatial features (the line) had a stronger weight than the temporal features (sampling week) for the clustering of E. coli populations; this weight was less significant when clustering was performed based on resistotypes. Among animals, finishers harbored an E. coli population different from those of the remaining animal populations studied, considering REP-PCR fingerprints and resistotypes. This population, the most important from a public health perspective, demonstrated the lowest levels of antimicrobial resistance and integron presence.
Collapse
|
5
|
Khaitsa ML, Oloya J, Doetkott D, Kegode R. Antimicrobial resistance and association with class 1 integrons in Escherichia coli isolated from turkey meat products. J Food Prot 2008; 71:1679-84. [PMID: 18724764 DOI: 10.4315/0362-028x-71.8.1679] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of this study was to quantify the role of class 1 integrons in antimicrobial resistance in Escherichia coli isolated from turkey meat products purchased from retail outlets in the Midwestern United States. Of 242 E. coli isolates, 41.3% (102 of 242) tested positive for class 1 integrons. A significant association was shown between presence of class 1 integrons in E. coli isolates and the resistance to tetracycline, ampicillin, streptomycin, gentamicin, sulfisoxazole, and trimethoprim-sulfamethoxazole. Attributable risk analysis revealed that for every 100 E. coli isolates carrying class 1 integrons, resistance was demonstrated for ampicillin (22%), gentamycin (48%), streptomycin (29%), sulfisoxazole (40%), trimethoprim-sulfamethoxazole (7%), and tetracycline (26%). Non-integron-related antimicrobial resistance was demonstrated for ampicillin (65%), gentamycin (16.9%), streptomycin (42.1%), sulfisoxazole (35.8%), and tetracycline (49.7%). Population-attributable fraction analysis showed that class 1 integrons accounted for the following resistances: gentamycin, 71% (50 of 71), amoxicillin-clavulanic acid, 19.6% (6 of 33), nalidixic acid, 34% (7 of 21), streptomycin, 28% (30 of 107), sulfisoxazole, 38% (40 of 106), and tetracycline, 14%, (26 of 185). In conclusion, although class 1 integrons have been implicated in resistance to antimicrobial agents, other non-integron resistance mechanisms seem to play an important part.
Collapse
Affiliation(s)
- M L Khaitsa
- Department of Veterinary and Microbiological Sciences, North Dakota State University, 1523 Centennial Boulevard, Fargo, North Dakota 58105-5406, USA.
| | | | | | | |
Collapse
|
6
|
Phongpaichit S, Liamthong S, Mathew AG, Chethanond U. Prevalence of class 1 integrons in commensal Escherichia coli from pigs and pig farmers in Thailand. J Food Prot 2007; 70:292-9. [PMID: 17340861 DOI: 10.4315/0362-028x-70.2.292] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Escherichia coli isolates (n = 617) from fecal samples of healthy and diarrheal pigs, pig farmers, and nonfarmers were analyzed for class 1 integrons. Three hundred ninety-two isolates (63.5%) were positive for class 1 integrons, based on the presence of intI1, with seventy-one of those isolates (11.5%) harboring all three conserved genes (intI1, qacEdelta1, and sul1) known to be associated with class 1 integrons. The presence of integrons was associated with isolate origin. Integrons were more prevalent in isolates from most pig groups than in isolates from pig farmers and nonfarmers. Selected integron-positive and integron-negative isolates were tested for resistance to 16 antimicrobials. All integron-positive swine isolates were multidrug resistant to at least three antimicrobial agents, demonstrating resistance to 14 different antibiotics that included sulphamethoxazole (100%), tetracycline (97.1%), ampicillin (92.8%), streptomycin (89.9%), trimethoprim-sulphamethoxazole (88.1%), nalidixic acid (60.9%), chloramphenicol (58.0%), kanamycin (55.1%), cephalothin (44.9%), gentamicin (39.1%), ciprofloxacin (33.3%), cefoxitin (8.7%), amoxicillin-clavulanic acid (5.8%), and amikacin (2.9%). All isolates were susceptible to ceftiofur and ceftriaxone. Forty-seven resistance patterns were observed among 69 integron-positive swine and swine farmer isolates. The most frequent pattern was tetracycline-ciprofloxacin-gentamicin-nalidixic acid-sulphamethoxazole-trimethoprim-sulphamethoxazole-kanamycin-ampicillin-streptomycin (10.1%), which was found in diarrheal and healthy pigs. This study shows that integrons and multidrug-resistant commensal bacteria are common and appear to be a significant aspect of microbial communities associated with pigs and humans in southern Thailand.
Collapse
Affiliation(s)
- Souwalak Phongpaichit
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
| | | | | | | |
Collapse
|
7
|
Kazimierczak KA, Scott KP. Antibiotics and Resistance Genes: Influencing the Microbial Ecosystem in the Gut. ADVANCES IN APPLIED MICROBIOLOGY 2007; 62:269-92. [PMID: 17869608 DOI: 10.1016/s0065-2164(07)62009-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Katarzyna A Kazimierczak
- Microbial Ecology, Gut Health Division, Rowett Research Institute, Bucksburn, Aberdeen AB21 9SB, Scotland, United Kingdom
| | | |
Collapse
|