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Junaid M, Liu S, Yue Q, Wang J. Exacerbated interfacial impacts of nanoplastics and 6:2 chlorinated polyfluorinated ether sulfonate by natural organic matter in adult zebrafish: Evidence through histopathology, gut microbiota, and transcriptomic analysis. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135038. [PMID: 38941840 DOI: 10.1016/j.jhazmat.2024.135038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/16/2024] [Accepted: 06/24/2024] [Indexed: 06/30/2024]
Abstract
Nanoplastics (NPs) interact with cooccurring chemicals and natural organic matter (NOM) in the environment, forming complexes that can change their bioavailability and interfacial toxicity in aquatic organisms. This study aims to elucidate the single and combined impacts of 21-day chronic exposure to low levels of polystyrene NPs (size 80 nm) at 1 mg/L and 6:2 chlorinated polyfluorinated ether sulfonate (Cl-PFAES or F53B) at 200 μg/L in the presence and absence of NOM (humic acid-HA and bovine serum albumin-BSA at 10 mg/L) in adult zebrafish (Danio rerio). Our findings through multiple bioassays, revealed that the mixture group (M), comprising of NPs, F53B, HA, and BSA, caused a higher level of toxicity compared to the single NPs (AN), single F53B (AF), and combined NPs+F53B (ANF) groups. The mixture exposure caused the highest level of vacuolization and nuclear condensation in hepatocytes, and most of the intestinal villi were fused and highly reduced in villi length and crypt depth. Further, the T-AOC levels were significantly lower (p < 0.05), while the MDA levels in the liver and intestine were significantly higher (p < 0.05) in the M group with downregulation of nfkbiaa, while upregulation of prkcda, csf1ra, and il1b apoptosis genes in the liver. Pairwise comparison of gut microbiota showed significantly higher (p < 0.05) abundances of various genera in the M group, including Gordonia, Methylobacterium, Tundrisphaera, GKS98, Pedomicrobium, Clostridium, Candidatus and Anaerobacillus, as well as higher abundance of genera including pathogenic strains, while control group showed higher abundance of probiotic genus ZOR0006 than exposed group (p < 0.01). The transcriptomic analysis revealed highest number of DEGs in the M group (2815), followed by the AN group (506) and ANF group (206) with the activation of relaxin signaling pathway-RSP (slc9a1, slc9a2) and AMP-activated protein kinase (AMPK) pathway (plin1), and suppression of the toll-like receptor (TLR) pathway (tlr4a, tlr2, tlr1), cytokine-cytokine receptor interaction (CCRI) pathway (tnfb, il21r1, il21, ifng1), and peroxisome proliferator-activated receptors (PPAR) pathway (pfkfb3). Overall, toxicity in the M group was higher, indicating that the HA and BSA elevated the interfacial impacts of NPs and F53B in adult zebrafish after chronic environmentally relevant exposure, implying the revisitation of the critical interaction of NOM with co-occurring chemicals and associated impacts.
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Affiliation(s)
- Muhammad Junaid
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510641, China; Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, China
| | - Shulin Liu
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510641, China
| | - Qiang Yue
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, China
| | - Jun Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510641, China.
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Zhang Z, Kuang D, Xu X, Zhan Z, Ren H, Shi C. Dissemination of IncC plasmids in Salmonella enterica serovar Thompson recovered from seafood and human diarrheic patients in China. Int J Food Microbiol 2024; 417:110708. [PMID: 38653121 DOI: 10.1016/j.ijfoodmicro.2024.110708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/26/2024] [Accepted: 04/13/2024] [Indexed: 04/25/2024]
Abstract
Salmonella Thompson is a prevalent foodborne pathogen and a major threat to food safety and public health. This study aims to reveal the dissemination mechanism of S. Thompson with co-resistance to ceftriaxone and ciprofloxacin. In this study, 181 S. Thompson isolates were obtained from a retrospective screening on 2118 serotyped Salmonella isolates from foods and patients, which were disseminated in 12 of 16 districts in Shanghai, China. A total of 10 (5.5 %) S. Thompson isolates exhibited resistance to ceftriaxone (MIC ranging from 8 to 32 μg/mL) and ciprofloxacin (MIC ranging from 2 to 8 μg/mL). The AmpC β-lactamase gene blaCMY-2 and plasmid-mediated quinolone resistance (PMQR) genes of qnrS and qepA were identified in the 9 isolates. Conjugation results showed that the co-transfer of blaCMY-2, qnrS, and qepA occurred on the IncC plasmids with sizes of ∼150 (n = 8) or ∼138 (n = 1) kbp. Three typical modules of ISEcp1-blaCMY-2-blc-sugE, IS26-IS15DIV-qnrS-ISKpn19, and ISCR3-qepA-intl1 were identified in an ST3 IncC plasmid pSH11G0791. Phylogenetic analysis indicated that IncC plasmids evolved into Lineages 1, 2, and 3. IncC plasmids from China including pSH11G0791 in this study fell into Lineage 1 with those from the USA, suggesting their close genotype relationship. In conclusion, to our knowledge, it is the first report of the co-existence of blaCMY-2, qnrS, and qepA in IncC plasmids, and the conjugational transfer contributed to their dissemination in S. Thompson. These findings underline further challenges for the prevention and treatment of Enterobacteriaceae infections posed by IncC plasmids bearing blaCMY-2, qnrS, and qepA.
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Affiliation(s)
- Zengfeng Zhang
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dai Kuang
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China; National Health Commission (NHC) Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, China
| | - Xuebin Xu
- Laboratory of Microbiology, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200050, China
| | - Zeqiang Zhan
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hao Ren
- Xianyang Center for Food and Drug Control, Shaanxi, China
| | - Chunlei Shi
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology and State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China.
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Memesh R, Yasir M, Ledder RG, Zowawi H, McBain AJ, Azhar EI. An update on the prevalence of colistin and carbapenem-resistant Gram-negative bacteria in aquaculture: an emerging threat to public health. J Appl Microbiol 2024; 135:lxad288. [PMID: 38059867 DOI: 10.1093/jambio/lxad288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 09/22/2023] [Accepted: 12/05/2023] [Indexed: 12/08/2023]
Abstract
Aquaculture has been recognized as a hotspot for the emergence and spread of antimicrobial resistance genes conferring resistance to clinically important antibiotics. This review gives insights into studies investigating the prevalence of colistin and carbapenem resistance (CCR) among Gram-negative bacilli in aquaculture. Overall, a high incidence of CCR has been reported in aquatic farms in several countries, with CCR being more prevalent among opportunistic human pathogens such as Acinetobacter nosocomialis, Shewanella algae, Photobacterium damselae, Vibrio spp., Aeromonas spp., as well as members of Enterobacteriaceae family. A high proportion of isolates in these studies exhibited wide-spectrum profiles of antimicrobial resistance, highlighting their multidrug-resistance properties (MDR). Several mobile colistin resistance genes (including, mcr-1, mcr-1.1, mcr-2, mcr-2.1, mcr-3, mcr-3.1, mcr-4.1, mcr-4.3, mcr-5.1, mcr-6.1, mcr-7.1, mcr-8.1, and mcr-10.1) and carbapenemase encoding genes (including, blaOXA-48, blaOXA-55, blaNDM, blaKPC, blaIMI, blaAIM, blaVIM, and blaIMP) have been detected in aquatic farms in different countries. The majority of these were carried on MDR Incompatibility (Inc) plasmids including IncA/C, and IncX4, which have been associated with a wide host range of different sources. Thus, there is a risk for the possible spread of resistance genes between fish, their environments, and humans. These findings highlight the need to monitor and regulate the usage of antimicrobials in aquaculture. A multisectoral and transdisciplinary (One Health) approach is urgently needed to reduce the spread of resistant bacteria and/or resistance genes originating in aquaculture and avoid their global reach.
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Affiliation(s)
- Roa Memesh
- School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Special Infectious Agents Unit, King Fahd Medical Research Center and Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Muhammad Yasir
- Special Infectious Agents Unit, King Fahd Medical Research Center and Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ruth G Ledder
- School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Hosam Zowawi
- College of Medicine, King Saud bin Abdul-Aziz University for Health Science (KSAU-HS), Riyadh, Saudi Arabia
- King Abdullah International Medical Research Centre (KAIMRC), Riyadh, Saudi Arabia
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew J McBain
- School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Esam I Azhar
- Special Infectious Agents Unit, King Fahd Medical Research Center and Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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Bai L, Yu G, Liu Y, Aizaz M, Yang G, Chen L. Common carp intelectin 3 (cITLN3) plays a role in the innate immune response. FISH & SHELLFISH IMMUNOLOGY 2023; 141:109057. [PMID: 37673388 DOI: 10.1016/j.fsi.2023.109057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/26/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
Intelectin is a lectin with the capacity to recognize and bind to carbohydrates. In this study, we successfully cloned cITLN3 from common carp, which consists of a signal peptide domain, a FReD domain, and an intelectin domain. The expression levels of cITLN3 were detected in various organs of common carp, including the liver, head kidney, spleen, foregut, midgut, and hindgut, with the highest expression observed in the liver. Following infection with Staphylococcus aureus (S. aureus) or Aeromonas hydrophila (A. hydrophila), the expression level of cITLN3 was significantly upregulated in all organs of common carp. Subsequently, we expressed and purified the recombinant cITLN3 protein using an E. coli expression system. The cITLN3 could aggregate both gram-positive and gram-negative bacteria in the presence of Ca2+, with a stronger affinity for gram-positive bacteria. Moreover, our study demonstrated that cITLN3 displayed a higher binding affinity towards PGN compared to LPS. Furthermore, we observed that cITLN3 had the potential to inhibit bacterial proliferation in common carp and safeguard intestinal integrity during bacterial stimulation. And the results also indicated that cITLN3 might played a role in the Toll-like receptors (TLRs) signaling pathway activation.
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Affiliation(s)
- Linyi Bai
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China; School of Life Sciences, Zhengzhou University, Zhengzhou, PR China
| | - Guanliu Yu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Yujie Liu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Muhammad Aizaz
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Guiwen Yang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Lei Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China.
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Lee HJ, Storesund JE, Lunestad BT, Hoel S, Lerfall J, Jakobsen AN. Whole genome sequence analysis of Aeromonas spp. isolated from ready-to-eat seafood: antimicrobial resistance and virulence factors. Front Microbiol 2023; 14:1175304. [PMID: 37455746 PMCID: PMC10348363 DOI: 10.3389/fmicb.2023.1175304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023] Open
Abstract
Aeromonas are widespread in aquatic environments and are considered emerging pathogens in humans and animals. Multidrug resistant (MDR) Aeromonas circulating in the aquatic environment and food production chain can potentially disseminate antimicrobial resistance (AMR) to humans via the foodborne route. In this study, we aimed to investigate AMR and virulence factors of 22 Aeromonas strains isolated from ready-to-eat (RTE) seafood. A multilocus phylogenetic analysis (MLPA) using the concatenated sequences of six housekeeping genes (gyrB, rpoD, gyrA, recA, dnaJ, and dnaX) in the 22 Aeromonas genomes and average nucleotide identity (ANI) analysis revealed eight different species; A. caviae, A. dhakensis, A. hydrophila, A. media, A. rivipollensis, A. salmonicida, A. bestiarum, and A. piscicola. The presence of virulence genes, AMR genes and mobile genetic elements (MGEs) in the Aeromonas genomes was predicted using different databases. Our data showed that the genes responsible for adherence and motility (Msh type IV pili, tap type IV pili, polar flagella), type II secretion system (T2SS) and hemolysins were present in all strains, while the genes encoding enterotoxins and type VI secretion system (T6SS) including major effectors were highly prevalent. Multiple AMR genes encoding β-lactamases such as cphA and blaOXA were detected, and the distribution of those genes was species-specific. In addition, the quinolone resistance gene, qnrS2 was found in a IncQ type plasmid of the A. rivopollensis strain A539. Furthermore, we observed the co-localization of a class I integron (intl1) with two AMR genes (sul1 and aadA1), and a Tn521 transposon carrying a mercury operon in A. caviae strain SU4-2. Various MGEs including other transposons and insertion sequence (IS) elements were identified without strongly associating with detected AMR genes or virulence genes. In conclusion, Aeromonas strains in RTE seafood were potentially pathogenic, carrying several virulence-related genes. Aeromonas carrying multiple AMR genes and MGEs could potentially be involved in the dissemination and spread of AMR genes to other bacterial species residing in the same environment and possibly to humans. Considering a One-Health approach, we highlight the significance of monitoring AMR caused by Aeromonas circulating in the food chain.
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Affiliation(s)
- Hye-Jeong Lee
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Julia E. Storesund
- Section for Contaminants and Biohazards, Institute of Marine Research, Bergen, Norway
| | - Bjørn-Tore Lunestad
- Section for Contaminants and Biohazards, Institute of Marine Research, Bergen, Norway
| | - Sunniva Hoel
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jørgen Lerfall
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anita Nordeng Jakobsen
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
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Bai L, Zhou Y, Sheng C, Yin Y, Chen Y, Ding X, Yu G, Yang G, Chen L. Common carp Peptidoglycan Recognition Protein 2 (CcPGRP2) plays a role in innate immunity for defense against bacterial infections. FISH & SHELLFISH IMMUNOLOGY 2023; 133:108564. [PMID: 36690267 DOI: 10.1016/j.fsi.2023.108564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/04/2023] [Accepted: 01/20/2023] [Indexed: 06/17/2023]
Abstract
PGRP is a family of pattern recognition molecules of the innate immune system. PGRPs are conserved from insects to mammals and have diverse functions in antimicrobial defense. Here we cloned a common carp PGRP ortholog, CcPGRP2 containing a conserved C-terminal PGRP domain. We tested the expression levels of CcPGRP2 in the liver, spleen, kidney, foregut, midgut, and hindgut of the highest level in the liver. The expression of CcPGRP2 upregulated in common carp infected with Aeromonas hydrophila (A. hydrophila) or Staphylococcus aureus (S. aureus). Recombinant CcPGRP2 protein expressed in Escherichia coli (E. coli) system and the purified CcPGRP2 could maintain the integrity of intestinal mucosa of common carp infected with A. hydrophila. In addition, CcPGRP2 could agglutinate or bind both gram-positive and gram-negative bacteria in a Zn2+-dependent manner. CcPGRP2 has a stronger agglutination and bacterial binding ability in gram-positive bacteria than in gram-negative bacteria. It is perhaps because CcPGRP2 could bind peptidoglycan (PGN) with a higher degree to lipopolysaccharide (LPS). And CcPGRP2 shows antimicrobial activities in the presence of Zn2+. Our results of CcPGRP2 provided new insight into the function of PGRP in the innate immunity of the common carp.
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Affiliation(s)
- Linyi Bai
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Yuan Zhou
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Chen Sheng
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Yizhi Yin
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Yanru Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Xinli Ding
- Department of Food Industry, Shandong Institute of Commerce and Technology, No.4516 Lvyou Road, Jinan, 250103, PR China
| | - Guanliu Yu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Guiwen Yang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China
| | - Lei Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250000, PR China.
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Xu X, Fu H, Wan G, Huang J, Zhou Z, Rao Y, Liu L, Wen C. Prevalence and genetic diversity of Aeromonas veronii isolated from aquaculture systems in the Poyang Lake area, China. Front Microbiol 2022; 13:1042007. [PMID: 36578578 PMCID: PMC9791064 DOI: 10.3389/fmicb.2022.1042007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022] Open
Abstract
The area around Poyang Lake is the main aquaculture area in Jiangxi Province, China, and an important base for the supply of freshwater aquatic products. Aquaculture in the Poyang Lake area is severely threatened by diseases caused by bacterial pathogens, and Aeromonas veronii has been the main pathogen in recent years. In this paper, ERIC-PCR genotyping, virulence gene and antimicrobial resistance gene detection, and drug susceptibility tests were carried out on 46 A. veronii isolates obtained from aquaculture systems in the Poyang Lake area from 2016 to 2020. The results showed that the A. veronii strains in the Poyang Lake area had high genetic diversity, and 46 strains produced 36 ERIC genotypes. There were no geographical and temporal differences in the cluster analysis results and no dominant clones. All 13 virulence genes tested were detected, and all isolates had harbored 2 or more virulence genes, with a maximum of 12 virulence genes detected. Among the 22 antimicrobial resistance genes selected, 15 were detected; 97.8% of the isolates contained 2 or more antimicrobial resistance genes, with a maximum of 9 antimicrobial resistance genes. Drug susceptibility tests showed that some strains were resistant to a variety of traditionally effective drugs for Aeromomas, such as enrofloxacin and florfenicol. This study provides a reference for exploring the impact of aquaculture in the Poyang Lake area on public health.
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Affiliation(s)
- Xiandong Xu
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, China,Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Huiyun Fu
- Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Guoyuan Wan
- Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Jiangfeng Huang
- Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Zhiyong Zhou
- Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Yi Rao
- Fisheries Research Institute of Jiangxi Province, Nanchang, China
| | - Lihui Liu
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - Chungen Wen
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, China,*Correspondence: Chungen Wen,
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Junaid M, Liu S, Liao H, Liu X, Wu Y, Wang J. Wastewater plastisphere enhances antibiotic resistant elements, bacterial pathogens, and toxicological impacts in the environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 841:156805. [PMID: 35724789 DOI: 10.1016/j.scitotenv.2022.156805] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/12/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Microplastics (MPs) are plastic particles with a size <5 mm that have raised alarming concerns owing to their ecological and human health impacts. They are largely released into the environment through the dumping of plastic waste and wastewater from treatment plants, domestic sewage, agricultural runoff, and industrial sources. Conventional wastewater treatment plants (WWTPs) are unable to remove micro and nano-sized plastic particles, which end up in the natural aquatic and terrestrial environment, causing multifaceted toxic impacts. Moreover, plastics in wastewater generate biofilm that potentially enriches antibiotic resistant bacteria (ARBs), antibiotic resistant genes (ARGs), and bacterial pathogens, which can largely impact antibiotic resistance development among organisms in the environment and transfer to humans through the food chain. Therefore, the current review aims to highlight the potential role of wastewater plastisphere in the enrichment and dissemination of ARBs, ARGs, and potential bacterial pathogens through mobile genetic elements (MGEs) in the environment. Further, the interaction of wastewater MPs with organic and inorganic contaminants and the associated ecological and human health impacts have been presented. Last but not the least, control strategies and future research perspectives on wastewater plastisphere are also highlighted.
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Affiliation(s)
- Muhammad Junaid
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Shulin Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Hongping Liao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Xinyu Liu
- Guangzhou Dublin International College of Life Sciences and Technology, College of International Education, South China Agricultural University, Guangzhou 510642, China
| | - Yan Wu
- Guangzhou Environmental Monitoring Centre, Guangzhou 510006, China
| | - Jun Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China.; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 528478, China.
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Zheng Z, Xu Y, Ye L, Chan EWC, Chen S. Genomic insights into the emergence and spread of NDM-1-producing Vibrio spp. isolates in China. J Antimicrob Chemother 2022; 77:3039-3049. [PMID: 35978475 DOI: 10.1093/jac/dkac276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/19/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Carbapenemase-producing Vibrio spp., which exhibit an XDR phenotype, have become increasingly prevalent and pose a severe threat to public health. OBJECTIVES To investigate the genetic characteristics of NDM-1-producing Vibrio spp. isolates and the dissemination mechanisms of blaNDM-1 in Vibrio. METHODS A total of 1363 non-duplicate Vibrio spp. isolates collected from shrimp samples in China were subjected to antimicrobial susceptibility tests and screened for blaNDM-1. The blaNDM-1-positive isolates were further characterized by PFGE, MLST, conjugation and WGS using Illumina and Nanopore platforms. Plasmid stability and fitness cost were assessed using Escherichia coli J53, Klebsiella pneumoniae Kpt80 and Salmonella spp. SA2051 as recipient strains. RESULTS In total, 13 blaNDM-1-positive isolates were identified, all exhibiting MDR. WGS analysis revealed that the 13 blaNDM-1 genes were all associated with a derivative of Tn125. Plasmid analysis revealed that six blaNDM-1 genes were located in IncC plasmids and the other seven were carried by plasmids of two different novel types. Conjugation and plasmid stability assays showed that only the IncC plasmids could be transferred to all the recipient strains and could be stably maintained in the hosts. CONCLUSIONS The emergence of the novel plasmids has contributed to the variable genetic contexts of blaNDM-1 in Vibrio spp. and IncC plasmids harbouring the blaNDM-1 gene could facilitate the spread of such genes between Vibrio spp. and other zoonotic pathogens, leading to a rapid dissemination of blaNDM-1 in bacterial pathogens worldwide.
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Affiliation(s)
- Zhiwei Zheng
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong.,City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Yating Xu
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Lianwei Ye
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Edward Wai Chi Chan
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong.,State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hum Hung, Hong Kong
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
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Junaid M, Siddiqui JA, Sadaf M, Liu S, Wang J. Enrichment and dissemination of bacterial pathogens by microplastics in the aquatic environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154720. [PMID: 35337880 DOI: 10.1016/j.scitotenv.2022.154720] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Microplastic pollution and associated impacts in the aquatic environment are spreading at an alarming rate worldwide. Plastic waste is increasing in the environment, and microplastics (MPs) are becoming a growing issue because they serve as vectors for pathogen transmission. This is the first comprehensive review that specifically addresses MPs as a source and vector of pathogenic bacteria, mainly associated with genera Vibrio, Pseudomonas, Acinetobacter, and so on, which are discovered to be more abundant on the aquatic plastisphere than that in the surrounding wastewater, freshwater, and marine water ecosystems. The horizontal gene transfer, chemotaxis, and co-selection and cross-selection could be the potential mechanism involved in the enrichment and dissemination of bacterial pathogens through the aquatic plastisphere. Further, bacterial pathogens through aquatic plastisphere can cause various ecological and human health impacts such as disrupted food chain, oxidative stress, tissue damages, disease transmission, microbial dysbiosis, metabolic disorders, among others. Last but not least, future research directions are also described to find answers to the challenging questions about bacterial pathogens in the aquatic plastisphere to ensure the integrity and safety of ecological and human health.
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Affiliation(s)
- Muhammad Junaid
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510641, China
| | - Junaid Ali Siddiqui
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
| | - Mamona Sadaf
- Knowledge Unit of Business, Economics, Accountancy and Commerce (KUBEAC), University of Management and Technology, Sialkot Campus, 51310, Pakistan
| | - Shulin Liu
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
| | - Jun Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510641, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China.
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11
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Loudermilk EM, Kotay SM, Barry KE, Parikh HI, Colosi LM, Mathers AJ. Tracking Klebsiella pneumoniae carbapenemase gene as an indicator of antimicrobial resistance dissemination from a hospital to surface water via a municipal wastewater treatment plant. WATER RESEARCH 2022; 213:118151. [PMID: 35167966 DOI: 10.1016/j.watres.2022.118151] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 05/10/2023]
Abstract
Antibiotic-resistant bacteria originating from hospitals are ultimately discharged to municipal wastewater treatment plants (WWTP), which may serve as important reservoirs for the spread of antibiotic resistant genes. This study traced and quantified the presence of a rare but clinically relevant antimicrobial resistance gene; Klebsiella pneumoniae carbapenamase (KPC)-and the viable organisms (KPCO) which carried this gene in hospital, non-hospital wastewater discharges, various compartments within a municipal WWTP, receiving water and sediment samples. High concentration of the gene, blaKPC harbored in viable and multispecies KPCO was detected in the hospital wastewater and in the forepart stages of the WWTP, but was not detected in the final effluent following UV disinfection. KPCO were not detected in multiple non-hospital sources of wastewater discharges tested. The treatment train used in the sampled WWTP was found to help remove and reduce KPCO load. Using whole-genome sequencing, a KPC-producing Klebsiella oxytoca strain identical to strains seen in the patients and hospital environment was isolated from the downstream receiving water on one sampling event. KPCO were also found to persist in the biosolids throughout the WWTP, but were not detected in the processed compost-products made from WWTP-biosolids. This study systematically demonstrates dissemination of KPCO from hospital point source to environment via municipal WWTP. Understanding hospitals as the origin and source of spread of some of the most clinically urgent antimicrobial-resistant organisms may help direct interventions that target rate at which antibiotic resistant bacteria evolve and spread via enhancement of wastewater treatment and mitigation of dissemination at source.
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Affiliation(s)
- Erica M Loudermilk
- Department of Engineering Systems and Environment, University of Virginia, 151 Engineer's Way, Charlottesville, VA 22903, United States
| | - Shireen M Kotay
- Division of Infectious Diseases, School of Medicine, University of Virginia, P.O. Box 800255, Charlottesville, VA 22903, United States.
| | - Katie E Barry
- Division of Infectious Diseases, School of Medicine, University of Virginia, P.O. Box 800255, Charlottesville, VA 22903, United States
| | - Hardik I Parikh
- Division of Infectious Diseases, School of Medicine, University of Virginia, P.O. Box 800255, Charlottesville, VA 22903, United States
| | - Lisa M Colosi
- Department of Engineering Systems and Environment, University of Virginia, 151 Engineer's Way, Charlottesville, VA 22903, United States
| | - Amy J Mathers
- Division of Infectious Diseases, School of Medicine, University of Virginia, P.O. Box 800255, Charlottesville, VA 22903, United States; Clinical Microbiology Laboratory, Department of Pathology, University of Virginia Health System, Charlottesville, VA, United States
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12
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El-Sherbeny EME, Khoris EA, Kassem S. Assessment the efficacy of some various treatment methods, in vitro and in vivo, against Aeromonas hydrophila infection in fish with regard to side effects and residues. Comp Biochem Physiol C Toxicol Pharmacol 2022; 253:109246. [PMID: 34801729 DOI: 10.1016/j.cbpc.2021.109246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/10/2021] [Accepted: 11/14/2021] [Indexed: 11/21/2022]
Abstract
Aeromonas hydrophila is an opportunistic bacteria with an overwhelming impact on fish farming industry especially with upraising of drug resistant mutants. This study aimed to evaluate and compare the therapeutic and side effects of levofloxacin (LEV), chitosan-nanoparticles (CNPs), and fructooligosaccharides (FOS) in control of this infection in tilapia. A total of 160 Nile-tilapia divided into 8-groups; G1: negative-control, G2: infected-control, G3: non-infected-(levofloxacin (LEV) 10 mg/kg bwt), G4: non-infected-(chitosan-nanoparticles (CNPs) 1 g/kg ration), G5: non-infected-(fructooligosaccharides (FOS) 20 g/kg ration), G6: infected-LEV, G7: infected-CNPs and G8: infected-FOS for 7 days. MICs were (0.125 μg/ml and 1.25 mg/ml) for LEV and CNPs respectively. No mortalities or significant adverse effects were recorded in non-infected treated-groups while infected were (20%) LEV, (30%) CNPs, (40%) FOS and (70%) G2. Aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) decreased by LEV and CNPs than FOS while all increased total protein (TP) and albumin than G2. Malondialdehyde (MDA) significantly decreased and superoxide dismutase (SOD) and reduced glutathione (GSH) increased in all infected-treated groups than G2 in various degrees. Urea and creatinine descending order were FOS, LEV then CNPs decreased significantly than G2. LEV musculature residues, using HPLC, decreased gradually till the 5th day; 621.00 ± 0.66, 270.00 ± 0.48 then 64.00 ± 0.40, and 471.00 ± 0.79, 175.00 ± 0.52 ppb then not detected at 1st, 3rd, and 5th days of withdrawal in non-infected and infected groups respectively. Finally, LEV and CNPs were superior as bactericidal, decreasing mortalities and enzyme activities while CNPs and FOS increased performance, non-specific immunity, and antioxidant biomarkers.
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Affiliation(s)
- Eman M El El-Sherbeny
- Pharmacology unit, Tanta lab, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt
| | - Enas A Khoris
- Fish disease unit, Tanta lab, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt
| | - Samr Kassem
- Nanomaterials Research and Synthesis Unit, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt.
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13
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Vásquez-Ponce F, Higuera-Llantén S, Parás-Silva J, Gamboa-Acuña N, Cortés J, Opazo-Capurro A, Ugalde JA, Alcalde-Rico M, Olivares-Pacheco J. Genetic characterization of clinically relevant class 1 integrons carried by multi-drug resistant bacteria (MDRB) isolated from the gut microbiota of highly antibiotic treated Salmo salar. J Glob Antimicrob Resist 2022; 29:55-62. [DOI: 10.1016/j.jgar.2022.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/08/2022] [Accepted: 02/07/2022] [Indexed: 11/30/2022] Open
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14
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Abstract
Class D β-lactamases are composed of 14 families and the majority of the member enzymes are included in the OXA family. The genes for class D β-lactamases are frequently identified in the chromosome as an intrinsic resistance determinant in environmental bacteria and a few of these are found in mobile genetic elements carried by clinically significant pathogens. The most dominant OXA family among class D β-lactamases is superheterogeneous and the family needs to have an updated scheme for grouping OXA subfamilies through phylogenetic analysis. The OXA enzymes, even the members within a subfamily, have a diverse spectrum of resistance. Such varied activity could be derived from their active sites, which are distinct from those of the other serine β-lactamases. Their substrate profile is determined according to the size and position of the P-, Ω- and β5-β6 loops, assembling the active-site channel, which is very hydrophobic. Also, amino acid substitutions occurring in critical structures may alter the range of hydrolysed substrates and one subfamily could include members belonging to several functional groups. This review aims to describe the current class D β-lactamases including the functional groups, occurrence types (intrinsic or acquired) and substrate spectra and, focusing on the major OXA family, a new model for subfamily grouping will be presented.
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Affiliation(s)
- Eun-Jeong Yoon
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, South Korea
| | - Seok Hoon Jeong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, South Korea
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15
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Vázquez X, García P, García V, de Toro M, Ladero V, Heinisch JJ, Fernández J, Rodicio R, Rodicio MR. Genomic analysis and phylogenetic position of the complex IncC plasmid found in the Spanish monophasic clone of Salmonella enterica serovar Typhimurium. Sci Rep 2021; 11:11482. [PMID: 34075064 PMCID: PMC8169936 DOI: 10.1038/s41598-021-90299-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 05/07/2021] [Indexed: 11/12/2022] Open
Abstract
pUO-STmRV1 is an IncC plasmid discovered in the Spanish clone of the emergent monophasic variant of Salmonella enterica serovar Typhimurium, which has probably contributed to its epidemiological success. The sequence of the entire plasmid determined herein revealed a largely degenerated backbone with accessory DNA incorporated at four different locations. The acquired DNA constitutes more than two-thirds of the pUO-STmRV1 genome and originates from plasmids of different incompatibility groups, including IncF (such as R100 and pSLT, the virulence plasmid specific of S. Typhimurium), IncN and IncI, from the integrative element GIsul2, or from yet unknown sources. In addition to pSLT virulence genes, the plasmid carries genes conferring resistance to widely-used antibiotics and heavy metals, together with a wealth of genetic elements involved in DNA mobility. The latter comprise class 1 integrons, transposons, pseudo-transposons, and insertion sequences, strikingly with 14 copies of IS26, which could have played a crucial role in the assembly of the complex plasmid. Typing of pUO-STmRV1 revealed backbone features characteristically associated with type 1 and type 2 IncC plasmids and could therefore be regarded as a hybrid plasmid. However, a rooted phylogenetic tree based on core genes indicates that it rather belongs to an ancient lineage which diverged at an early stage from the branch leading to most extant IncC plasmids detected so far. pUO-STmRV1 may have evolved at a time when uncontrolled use of antibiotics and biocides favored the accumulation of multiple resistance genes within an IncC backbone. The resulting plasmid thus allowed the Spanish clone to withstand a wide variety of adverse conditions, while simultaneously promoting its own propagation through vertical transmission.
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Affiliation(s)
- Xenia Vázquez
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Spain.,Grupo de Microbiología Traslacional, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011, Oviedo, Spain
| | - Patricia García
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Spain.,Department of Microbiology, University Hospital A Coruña (CHUAC)-Biomedical Research Institute A Coruña (INIBIC), 15006, A Coruña, Spain
| | - Vanesa García
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Spain.,Laboratorio de Referencia de Escherichia coli (LREC), Departamento de Microbioloxía e Parasitoloxía, Facultade de Veterinaria; Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Universidade de Santiago de Compostela (USC), 27002, Lug, Spain
| | - María de Toro
- Plataforma de Genómica y Bioinformática, Centro de Investigación Biomédica de La Rioja (CIBIR), 26006, Logroño, Spain
| | - Víctor Ladero
- Instituto de Productos Lácteos de Asturias, Consejo Superior de Investigaciones Científicas (IPLA-CSIC), 33300, Villaviciosa, Spain.,Grupo de Microbiología Molecular, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011, Oviedo, Spain
| | - Jürgen J Heinisch
- Department of Genetics, Faculty of Biology and Chemistry, University of Osnabrück, Barbarastrasse 11, 49076, Osnabrück, Germany
| | - Javier Fernández
- Grupo de Microbiología Traslacional, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011, Oviedo, Spain.,Servicio de Microbiología, Hospital Universitario Central de Asturias, 33011, Oviedo, Spain
| | - Rosaura Rodicio
- Grupo de Microbiología Traslacional, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011, Oviedo, Spain.,Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, 33006, Oviedo, Spain
| | - M Rosario Rodicio
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Spain. .,Grupo de Microbiología Traslacional, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011, Oviedo, Spain.
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16
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Lin X, Lu J, Qian C, Lin H, Li Q, Zhang X, Liu H, Sun Z, Zhou D, Lu W, Zhu M, Zhang H, Xu T, Li K, Bao Q, Lin L. Molecular and Functional Characterization of a Novel Plasmid-Borne bla NDM-Like Gene, bla AFM-1, in a Clinical Strain of Aeromonas hydrophila. Infect Drug Resist 2021; 14:1613-1622. [PMID: 33911885 PMCID: PMC8075316 DOI: 10.2147/idr.s297419] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/31/2021] [Indexed: 01/21/2023] Open
Abstract
Purpose An increasing frequency of antibiotic resistance has been observed in both clinical and environmental Aeromonas hydrophila isolates in recent years. However, there are still very few in-depth studies regarding the role of plasmids in the antibiotic resistance of A. hydrophila. Hence, we investigated the molecular and functional characterization of a multidrug-resistant plasmid encoding an NDM-like metallo-β-lactamase, AFM-1, in the clinical A. hydrophila isolate SS332. Methods The minimum inhibitory concentrations (MICs) of 24 antibiotics against A. hydrophila SS332 were measured by the agar dilution method. The genome of A. hydrophila SS332 was sequenced with PacBio and Illumina platforms. Six plasmid-borne antimicrobial resistance genes were chosen for cloning, including blaAFM-1, blaOXA-1, msr(E), mph(E), aac(6ʹ)-Ib10, and aph(3ʹ)-Ia. Phylogenetic analysis, amino acid sequence alignment, and comparative genomic analysis were performed to elucidate the active site requirements and genetic context of the blaAFM-1 gene. Results A. hydrophila SS332 showed high levels of resistance to 15 antibiotics, especially those with MIC levels at or above 1024 μg/mL, including ampicillin, cefazolin, ceftriaxone, aztreonam, spectinomycin, and roxithromycin. Six plasmid-borne resistance genes from A. hydrophila were verified to be functional in E. coli DH5α. AFM-1 shared 86% amino acid identity with NDM-1 and showed resistance to ampicillin, cefazolin, cefoxitin, and ceftazidime. In addition, the blaAFM-1 gene was associated with three different novel ISCR19-like elements, designated ISCR19-1, ISCR19-2 and ∆ISCR19-3, which may be involved in the acquisition and mobilization of the blaAFM-1 gene. Conclusion Our investigation showed that plasmid-borne resistance genes can contribute to antibiotic resistance in A. hydrophila SS332. A novel blaNDM-like gene, blaAFM-1, was verified to be functional and associated with novel ISCR19-like elements. This fact indicated the risk of spread of blaAFM-1 genes and ISCR19-like elements.
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Affiliation(s)
- Xi Lin
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Junwan Lu
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Changrui Qian
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Hailong Lin
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Qiaoling Li
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Xueya Zhang
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Hongmao Liu
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Zhewei Sun
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Danying Zhou
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Wei Lu
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Mei Zhu
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, Zhejiang, 310013, People's Republic of China
| | - Hailin Zhang
- Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Teng Xu
- Institute of Translational Medicine, Baotou Central Hospital, Baotou, 014040, People's Republic of China
| | - Kewei Li
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Qiyu Bao
- Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
| | - Li Lin
- Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China.,The Second Affiliated Hospital and Children's Hospital, Wenzhou Medical University, Wenzhou, 325027, People's Republic of China
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Shi J, Wu D, Su Y, Xie B. Selective enrichment of antibiotic resistance genes and pathogens on polystyrene microplastics in landfill leachate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:142775. [PMID: 33082042 DOI: 10.1016/j.scitotenv.2020.142775] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/30/2020] [Accepted: 09/30/2020] [Indexed: 05/11/2023]
Abstract
Landfill leachate is an important reservoir of antibiotic resistance genes (ARGs) and microplastics (MPs). However, the enrichment characteristics of ARGs on MPs and the effect of MPs' presence on ARGs in surrounding leachates are little studied. Therefore, we investigated the differences of ARGs, mobile genetic elements (MGEs), bacterial communities and pathogens on polystyrene MPs, in MPs-surrounding leachate and in control (leachate with the absence of MPs). The results revealed that ARGs were selectively enriched on MPs, which was similar in three types of leachate environments. The genes strB and blaTEM were maximally enriched and mefA, ermB, tetM and tetQ were slightly enriched on MPs, and the degree of ARGs enrichment increased with time during the 60 days of the experiment. Furthermore, compared to the leachate, MPs were observed to have the higher abundances of MGEs and distinct bacterial communities, both of which were closely associated with ARGs on MPs. Pathogens were distinct and more abundant on MPs compared to that in leachate, and 11 pathogens were identified as potential hosts for ARGs on MPs. Additionally, the presence of MPs (500 mg/L) induced few changes in ARGs' abundances, MGEs' abundances and bacterial communities in MP-surrounding leachate within 60 days. Overall, this study suggested that MPs could selectively enrich ARGs and pathogens from the surrounding environments, which promoted the understanding of the combined pollution properties of MPs and ARGs.
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Affiliation(s)
- Jianhong Shi
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Dong Wu
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yinglong Su
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Bing Xie
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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18
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Darphorn TS, Bel K, Koenders-van Sint Anneland BB, Brul S, Ter Kuile BH. Antibiotic resistance plasmid composition and architecture in Escherichia coli isolates from meat. Sci Rep 2021; 11:2136. [PMID: 33483623 PMCID: PMC7822866 DOI: 10.1038/s41598-021-81683-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/08/2021] [Indexed: 01/30/2023] Open
Abstract
Resistance plasmids play a crucial role in the transfer of antimicrobial resistance from the veterinary sector to human healthcare. In this study plasmids from foodborne Escherichia coli isolates with a known (ES)BL or tetracycline resistance were sequenced entirely with short- and long-read technologies to obtain insight into their composition and to identify driving factors for spreading. Resistant foodborne E. coli isolates often contained several plasmids coding for resistance to various antimicrobials. Most plasmids were large and contained multiple resistance genes in addition to the selected resistance gene. The majority of plasmids belonged to the IncI, IncF and IncX incompatibility groups. Conserved and variable regions could be distinguished in each of the plasmid groups. Clusters containing resistance genes were located in the variable regions. Tetracycline and (extended spectrum) beta-lactamase resistance genes were each situated in separate clusters, but sulphonamide, macrolide and aminoglycoside formed one cluster and lincosamide and aminoglycoside another. In most plasmids, addiction systems were found to maintain presence in the cell.
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Affiliation(s)
- Tania S. Darphorn
- grid.7177.60000000084992262Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Keshia Bel
- grid.7177.60000000084992262Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands ,grid.4818.50000 0001 0791 5666Present Address: Wageningen Food Safety Research, Wageningen University and Research, Postbus 230, 6700 AE Wageningen, The Netherlands
| | - Belinda B. Koenders-van Sint Anneland
- grid.7177.60000000084992262Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Stanley Brul
- grid.7177.60000000084992262Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Benno H. Ter Kuile
- grid.7177.60000000084992262Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands ,grid.435742.30000 0001 0726 7822Netherlands Food and Consumer Product Safety Authority, Office for Risk Assessment, Utrecht, The Netherlands
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Thomas SG, Abajorga M, Glover MA, Wengert PC, Parthasarathy A, Savka MA, Wadsworth CB, Shipman PA, Hudson AO. Aeromonas hydrophila RIT668 and Citrobacter portucalensis RIT669-Potential Zoonotic Pathogens Isolated from Spotted Turtles. Microorganisms 2020; 8:microorganisms8111805. [PMID: 33212916 PMCID: PMC7698337 DOI: 10.3390/microorganisms8111805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/06/2020] [Accepted: 11/13/2020] [Indexed: 11/16/2022] Open
Abstract
Antimicrobial resistance (AMR) is one of the biggest challenges of the 21st century, and biofilm formation enables bacteria to resist antibiotic at much higher concentrations than planktonic cells. Earlier, we showed that the Gram-negative Aeromonas hydrophila RIT668 and Citrobacter portucalensis RIT669 (closely related to C. freundii NBRC 12681) from infected spotted turtles (Clemmys guttata), formed biofilms and upregulated toxin expression on plastic surfaces, and were predicted to possess multiple antibiotic resistance genes. Here, we show that they each resist several antibiotics in the planktonic phase, but were susceptible to neomycin, and high concentrations of tetracycline and cotrimoxazole. The susceptibility of their biofilms to neomycin and cotrimoxazole was tested using the Calgary device. For A. hydrophila, the minimum inhibitory concentration (MIC) = 500-1000, and the minimum biofilm eradication concentration (MBEC) > 1000 μg/mL, using cotrimoxazole, and MIC = 32.3-62.5, and MBEC > 1000 μg/mL, using neomycin. For C. freundii MIC = 7.8-15.6, and, MBEC > 1000 μg/mL, using cotrimoxazole, and MIC = 7.8, and MBEC > 1000 μg/mL, using neomycin. Both A. hydrophila and C. portucalensis activated an acyl homoserine lactone (AHL) dependent biosensor, suggesting that quorum sensing could mediate biofilm formation. Their multidrug resistance in the planktonic form, and weak biofilm eradication even with neomycin and cotrimoxazole, indicate that A. hydrophila and C. portucalensis are potential zoonotic pathogens, with risks for patients living with implants.
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Zhang Y, Lei CW, Chen X, Yao TG, Yu JW, Hu WL, Mao X, Wang HN. Characterization of IncC Plasmids in Enterobacterales of Food-Producing Animals Originating From China. Front Microbiol 2020; 11:580960. [PMID: 33193210 PMCID: PMC7652850 DOI: 10.3389/fmicb.2020.580960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/07/2020] [Indexed: 01/13/2023] Open
Abstract
Incompatibility group C (IncC) plasmids have received attention due to their broad host range and because they harbor key antibiotic resistance genes. Because these resistance genes can spread from food-producing animals to human, the proliferation of these plasmids represents a public health risk. In this study, a total of 20 IncC plasmids were collected from food-producing animals in China, and characterized by Oxford Nanopore Technologies long-read sequencing. Based on four key differences of the IncC backbone, 4 IncC plasmids were classified as type 1, 15 were classified as type 1/2 hybrid, and one was classified as type 2. The 15 type 1/2 hybrids were further divided into 13 type 1/2a and 2 type 1/2b, based on sequence differences arising from different homologous recombination events between type 1 and type 2 IncC backbones. Genome comparison of accessory resistance modules showed that different IncC plasmids exhibited various phenotypes via loss and gain of diverse modules, mainly within the blaCMY-carrying region, and two antibiotic resistance islands designated ARI-A and ARI-B. Interestingly, in addition to insertion and deletion events, IS26 or IS1294-mediated large sequence inversions were found in the IncC genome of the 4 type1/2a plasmids, suggesting that insertion sequence-mediated rearrangements also promote the diversity of the IncC genome. This study provides insight into the structural diversification and multidrug resistance of IncC plasmids identified from food-producing animals in China.
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Affiliation(s)
- Yu Zhang
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Chang-Wei Lei
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Xuan Chen
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Tian-Ge Yao
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Jing-Wen Yu
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Wan-Long Hu
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Xuan Mao
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
| | - Hong-Ning Wang
- College of Life Sciences, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
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Complete genome sequence of fish-pathogenic Aeromonas hydrophila HX-3 and a comparative analysis: insights into virulence factors and quorum sensing. Sci Rep 2020; 10:15479. [PMID: 32968153 PMCID: PMC7512022 DOI: 10.1038/s41598-020-72484-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 08/31/2020] [Indexed: 12/19/2022] Open
Abstract
The gram-negative, aerobic, rod-shaped bacterium Aeromonas hydrophila, the causative agent of motile aeromonad septicaemia, has attracted increasing attention due to its high pathogenicity. Here, we constructed the complete genome sequence of a virulent strain, A. hydrophila HX-3 isolated from Pseudosciaena crocea and performed comparative genomics to investigate its virulence factors and quorum sensing features in comparison with those of other Aeromonas isolates. HX-3 has a circular chromosome of 4,941,513 bp with a 61.0% G + C content encoding 4483 genes, including 4318 protein-coding genes, and 31 rRNA, 127 tRNA and 7 ncRNA operons. Seventy interspersed repeat and 153 tandem repeat sequences, 7 transposons, 8 clustered regularly interspaced short palindromic repeats, and 39 genomic islands were predicted in the A. hydrophila HX-3 genome. Phylogeny and pan-genome were also analyzed herein to confirm the evolutionary relationships on the basis of comparisons with other fully sequenced Aeromonas genomes. In addition, the assembled HX-3 genome was successfully annotated against the Cluster of Orthologous Groups of proteins database (76.03%), Gene Ontology database (18.13%), and Kyoto Encyclopedia of Genes and Genome pathway database (59.68%). Two-component regulatory systems in the HX-3 genome and virulence factors profiles through comparative analysis were predicted, providing insights into pathogenicity. A large number of genes related to the AHL-type 1 (ahyI, ahyR), LuxS-type 2 (luxS, pfs, metEHK, litR, luxOQU) and QseBC-type 3 (qseB, qseC) autoinducer systems were also identified. As a result of the expression of the ahyI gene in Escherichia coli BL21 (DE3), combined UPLC-MS/MS profiling led to the identification of several new N-acyl-homoserine lactone compounds synthesized by AhyI. This genomic analysis determined the comprehensive QS systems of A. hydrophila, which might provide novel information regarding the mechanisms of virulence signatures correlated with QS.
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Liu J, Gao S, Dong Y, Lu C, Liu Y. Isolation and characterization of bacteriophages against virulent Aeromonas hydrophila. BMC Microbiol 2020; 20:141. [PMID: 32487015 PMCID: PMC7268745 DOI: 10.1186/s12866-020-01811-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/04/2020] [Indexed: 12/15/2022] Open
Abstract
Background Aeromonas hydrophila is an important water-borne pathogen that leads to a great economic loss in aquaculture. Along with the abuse of antibiotics, drug-resistant strains rise rapidly. In addition, the biofilms formed by this bacterium limited the antibacterial effect of antibiotics. Bacteriophages have been attracting increasing attention as a potential alternative to antibiotics against bacterial infections. Results Five phages against pathogenic A. hydrophila, named N21, W3, G65, Y71 and Y81, were isolated. Morphological analysis by transmission electron microscopy revealed that phages N21, W3 and G65 belong to the family Myoviridae, while Y71 and Y81 belong to the Podoviridae. These phages were found to have broad host spectra, short latent periods and normal burst sizes. They were sensitive to high temperature but had a wide adaptability to the pH. In addition, the phages G65 and Y81 showed considerable bacterial killing effect and potential in preventing formation of A. hydrophila biofilm; and the phages G65, W3 and N21 were able to scavenge mature biofilm effectively. Phage treatments applied to the pathogenic A. hydrophila in mice model resulted in a significantly decreased bacterial loads in tissues. Conclusions Five A. hydrophila phages were isolated with broad host ranges, low latent periods, and wide pH and thermal tolerance. And the phages exhibited varying abilities in controlling A. hydrophila infection. This work presents promising data supporting the future use of phage therapy.
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Affiliation(s)
- Jin Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shanshan Gao
- Sucheng District Animal Husbandry and Veterinary Station, Suqian, 223800, China
| | - Yuhao Dong
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chengping Lu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongjie Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
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23
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Nwaiwu O, Aduba CC. An in silico analysis of acquired antimicrobial resistance genes in Aeromonas plasmids. AIMS Microbiol 2020; 6:75-91. [PMID: 32226916 PMCID: PMC7099201 DOI: 10.3934/microbiol.2020005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 03/13/2020] [Indexed: 12/17/2022] Open
Abstract
Sequences of 105 Aeromonas species plasmids were probed for acquired anti-microbial resistance (AMR) genes using a bioinformatics approach. The plasmids showed no positive linear correlation between size and GC content and up to 55 acquired AMR genes were found in 39 (37%) plasmids after in silico screening for resistance against 15 antibiotic drug classes. Overall, potential multiple antibiotic resistance (p-MAR) index ranged from 0.07 to 0.53. Up to 18 plasmids were predicted to mediate multiple drug resistance (MDR). Plasmids pS121-1a (A. salmonicida), pWCX23_1 (A. hydrophila) and pASP-a58 (A. veronii) harboured 18, 15 and 14 AMR genes respectively. The five most occurring drug classes for which AMR genes were detected were aminoglycosides (27%), followed by beta-lactams (17%), sulphonamides (13%), fluoroquinolones (13%), and phenicols (10%). The most prevalent genes were a sulphonamide resistant gene Sul1, the gene aac (6')-Ib-cr (aminoglycoside 6'-N-acetyl transferase type Ib-cr) resistant to aminoglycosides and the blaKPC-2 gene, which encodes carbapenemase-production. Plasmid acquisition of AMR genes was mainly inter-genus rather than intra-genus. Eighteen plasmids showed template or host genes acquired from Pseudomonas monteilii, Salmonella enterica or Escherichia coli. The most occurring antimicrobial resistance determinants (ARDs) were beta-lactamase, followed by aminoglycosides acetyl-transferases, and then efflux pumps. Screening of new isolates in vitro and in vivo is required to ascertain the level of phenotypic expression of colistin and other acquired AMR genes detected.
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Affiliation(s)
- Ogueri Nwaiwu
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, United Kingdom
| | - Chiugo Claret Aduba
- Department of Science Laboratory Technology, University of Nigeria, Nsukka, Nigeria
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Cordeiro KS, Galeno LS, Mendonça CDJS, Carvalho IA, Costa FN. Ocorrência de bactérias patogênicas e deteriorantes em sashimi de salmão: avaliação de histamina e de susceptibilidade a antimicrobianos. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2020. [DOI: 10.1590/1981-6723.08519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo O estudo das condições higiênico sanitárias de alimentos cárneos consumidos crus, como o sashimi, é necessário para definir sua qualidade e possíveis consequências para a saúde humana. Foram coletadas 60 amostras de sashimi de salmão (Salmo salar), de dez restaurantes na cidade de São Luís, Maranhão - Brasil, sendo seis de cada local. As amostras foram analisadas para contagem de coliformes a 35 °C, coliformes a 45 °C e Staphylococcus coagulase positiva e negativa, identificação da presença de Escherichia coli, Salmonella sp., Vibrio parahaemolyticus e Aeromonas spp, teste de suscetibilidade a antimicrobianos dos isolados e quantificação de histamina nas amostras. Os resultados mostraram elevadas contagens de coliformes a 35 °C e 12 amostras com >102 NMP/g de coliformes a 45 °C, presença de E. coli e de Salmonella sp. em 3 amostras cada, ausência de V. parahaemolyticus e Staphylococcus coagulase positiva e contagem de Staphylococcus coagulase negativa entre <20 e 5,0x104 UFC/g, presença de Aeromonas spp. em 95% das amostras, sendo 60 isolados A. hydrophila e 6 A. caviae. Para suscetibilidade aos antimicrobianos, os isolados de E. coli foram sensíveis a CPM, CTX, LVX, PPT e SUT, dois resistentes a AMP; um resistente a GEN, um a AMI e um a AMC. Os isolados de Salmonella foram sensíveis a AMC, CPM, CFO, CRX, GEN, LVX e PPT, um resistente a AMI e um a AMP e SUT. Os isolados de Aeromonas foram resistentes em média a cinco dos antimicrobianos, sendo a AMP (97%), a CRX (90,9%) e a AMC (77,3%), e 81,8% foram sensíveis ao CPM. Os níveis de histamina variaram de 44,06 ± 0,74 a 505,46 ± 8,83 mg/kg, sendo 21 das amostras com níveis superiores a 100 mg/kg. As amostras apresentaram condições higiênicos sanitárias insatisfatórias e riscos para a saúde pública, por identificação de bactérias patogênicas e elevadas concentrações de histamina capazes de causar intoxicação escombróide, e ainda, isolados com multirresistência aos antimicrobianos testados.
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Cheng Q, Jiang X, Xu Y, Hu L, Luo W, Yin Z, Gao H, Yang W, Yang H, Zhao Y, Zhao X, Zhou D, Dai E. Type 1, 2, and 1/2-Hybrid IncC Plasmids From China. Front Microbiol 2019; 10:2508. [PMID: 31803147 PMCID: PMC6872532 DOI: 10.3389/fmicb.2019.02508] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/18/2019] [Indexed: 11/13/2022] Open
Abstract
A collection of 11 IncC plasmids from China were fully sequenced herein and compared with reference plasmids pR148 and pR55. These 13 plasmids could be assigned into three different subgroups: type 1, type 2, and type 1/2 hybrid. Type 1/2-hybrid plasmids most likely emerged from homologous recombination between type 1 and type 2 plasmids. Different IncC plasmids had evolved to acquire quite different profiles of accessory modules and thus different collections of resistance genes. The accessory resistance modules included not only the bla CMY-carrying region, the ARI-A island, and the ARI-B island, but also various additional kinds of resistance islands such as the bla CTX-M-carrying regions and the MDR regions. Insertion of accessory modules was sometimes accompanied by deletion, inversion, and translocation of surrounding backbone regions. pR148 and pR55 were confirmed to have the most complete backbones for type 1 and type 2, respectively. This was the first report of a bla IMP- 8-carrying IncC plasmid, and that of three novel mobile elements: a Tn1696-derived unit transposon Tn6395, a class 2 integron In2-76, and an insertion sequence ISEcl10.
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Affiliation(s)
- Qiaoxiang Cheng
- Department of Clinical Laboratory Medicine, Hebei Medical University, Shijiazhuang, China
| | - Xiaoyuan Jiang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yanan Xu
- Department of Clinical Laboratory Medicine, Hebei Medical University, Shijiazhuang, China.,Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China
| | - Lingfei Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wenbo Luo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Zhe Yin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Huixia Gao
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China
| | - Wenhui Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Huiying Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yuee Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiaodong Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Erhei Dai
- Department of Clinical Laboratory Medicine, Hebei Medical University, Shijiazhuang, China.,Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China
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26
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Zheng Z, Li R, Ye L, Wai-Chi Chan E, Xia X, Chen S. Genetic Characterization of bla CTX-M-55 -Bearing Plasmids Harbored by Food-Borne Cephalosporin-Resistant Vibrio parahaemolyticus Strains in China. Front Microbiol 2019; 10:1338. [PMID: 31275270 PMCID: PMC6591265 DOI: 10.3389/fmicb.2019.01338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/29/2019] [Indexed: 11/24/2022] Open
Abstract
This study aims to investigate and compare the complete nucleotide sequences of the multidrug resistance plasmids pVb0267 and pVb0499, which were recovered from foodborne Vibrio parahaemolyticus isolates, and analyze the genetic environment of blaCTX–M–55 to provide insight into the dissemination mechanisms of this resistance element. Analysis of the sequences of plasmids pVb0267 (166,467 bp) and pVb0499 (192,739 bp) revealed that the backbones of these two plasmids exhibited a high degree of similarity with pR148, a recognized type 1a IncC plasmid recovered from Aeromonas hydrophila (99% identity). The resistance genes, found in both plasmids, included qacH, aadB, arr2, blaOXA–10, aadA1, sul1, tet(A), and blaCTX–M–55, which were mostly arranged in a specific region designated ARI-A. Plasmid pVb0499 was found to possess a larger size of ARI-A than pVb0267, which lacked a mer determination region, a qnr A segment, an aacC3 gene and several mobility-encoding genes. Comparative analysis of resistance island (RI) of these plasmids and others revealed the potential evolution route of these RI sequences. In conclusion, plasmids harboring the blaCTX–M–55 gene has been recovered in Vibrio parahaemolyticus strains of food origin. It is alarming to find that IncC plasmids harboring resistance islands are disseminating in aquatic bacterial strains. The continuous evolution of resistance genes in conjugative plasmid in aquatic bacteria could be due to bacterial adaption to aquaculture environment, where antibiotics were increasingly used.
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Affiliation(s)
- Zhiwei Zheng
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Shenzhen Key Laboratory for Food Biological Safety Control, Food Safety and Technology Research Centre, The Hong Kong PolyU Shenzhen Research Institute, Shenzhen, China
| | - Ruichao Li
- Shenzhen Key Laboratory for Food Biological Safety Control, Food Safety and Technology Research Centre, The Hong Kong PolyU Shenzhen Research Institute, Shenzhen, China.,State Key Laboratory of Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong.,College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Lianwei Ye
- Shenzhen Key Laboratory for Food Biological Safety Control, Food Safety and Technology Research Centre, The Hong Kong PolyU Shenzhen Research Institute, Shenzhen, China.,State Key Laboratory of Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Edward Wai-Chi Chan
- State Key Laboratory of Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Xiaodong Xia
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Sheng Chen
- Shenzhen Key Laboratory for Food Biological Safety Control, Food Safety and Technology Research Centre, The Hong Kong PolyU Shenzhen Research Institute, Shenzhen, China.,State Key Laboratory of Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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27
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Molecular characterization and expression analysis of two peptidoglycan recognition proteins (CcPGRP5, CcPGRP6) in larvae ontogeny of common carp Cyprinus carpio L. and upon immune stimulation by bacteria. BMC Vet Res 2019; 15:10. [PMID: 30612570 PMCID: PMC6322232 DOI: 10.1186/s12917-018-1744-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/11/2018] [Indexed: 01/09/2023] Open
Abstract
Background Although teleost fish developed acquired immunity firstly in evolution, innate immunity is still very important for them. Innate immunity depends on pattern recognition receptors (PRRs) to distinguish “self” and “non-self”, Peptidoglycan (PGN) recognition protein (PGRP) is one of the receptors and it can bind to multiple components of bacterial envelope. Results We report the cloning and expression analysis of two PGRPs (Ccpgrp5 and Ccpgrp6) from common carp (Cyprinus carpio L). The Ccpgrp5 gene encodes a protein of 199 amino acid (aa) with PGRP domain, Ami_2 domain and four Zn2+ binding sites required for amidase activity, but without signal peptide and transmembrane domain. The Ccpgrp6 gene encodes a protein of 446 aa with PGRP domain, Ami_2 domain, signal peptide, five Zn2+ binding sites required for amidase activity and two sites for N-glycosylation. The phylogenetic analysis revealed that the CcPGRP5 and CcPGRP6 are closely related to Ctenopharyngodon idella and Danio rerio. Ccpgrp5 and Ccpgrp6 were expressed in all tissues examined including liver, spleen, muscle, oral epithelium, head kidney, gill, skin, gonad, brain, foregut and hindgut and showed different distribution characteristics. During the embryonic and early larval developmental stages of common carp, Ccpgrp6 was detected to be highly expressed at 10 days post fertilization(dpf) and 36 dpf, while Ccpgrp5 were hardly detected using Real-time quantitative PCR. After being challenged with Aeromonas hydrophila, Ccpgrp5 in adult common carp was induced and up-regulated in all the tissues, especially in gill and spleen, but not in head kidney, while Ccpgrp6 was up-regulated in all the tissues, especially in liver, head kidney and gill. The varied expression profiling of Ccpgrp5 and Ccpgrp6 indicated they had different roles in the host immune response. Conclusions These results indicated the two PGRPs, especially Ccpgrp6, played an important role in the immune defense of common carp during larva development and against Aeromonas hydrophila, providing insight to further exploration of protecting fish against bacteria infectious disease.
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Pathirana HNKS, Shin GW, Wimalasena SHMP, Hossain S, De Silva BCJ, Dahanayake PS, Heo GJ. Incidence of antibiogram, antibiotic resistance genes and class 1 and 2 integrons in tribe Proteeae with IMP27 gene for the first time in Providencia sp. isolated from pet turtles. Lett Appl Microbiol 2018; 67:620-627. [PMID: 30238643 DOI: 10.1111/lam.13077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/18/2018] [Accepted: 09/18/2018] [Indexed: 11/28/2022]
Abstract
Proteeae is a tribe which consists of three genera: Proteus, Providencia and Morganella. The objective of this study was to determine antimicrobial resistance profile, virulence genotype and class 1 and 2 integrons in Proteeae isolated from pet turtles and to determine the impact of antibiotic resistance on virulence and antimicrobial resistance genes. Integron-positive isolates were used to detect their gene cassette array. Sixty four Proteeae were isolated and all were resistant to macrolides (100%). Among 64 isolates 56, 52, 36 and 25 were resistant to nitrofurans, β-lactams, tetracycline and aminoglycoside respectively. Sixteen (25%) isolates were positive for intI1 while 14 (21·87%) were positive for integrase 2 (intI2). Eleven (17·18%) isolates were positive for class 1 variable region while 7 (10·93%) were positive for class 2 variable region. IMP27, a novel metallo β-lactamase gene was found in Providencia isolates. Proteus sp. were positive for every tested virulence genes and UreC gene was detected in 48·44% followed by zapA (17·19%), mrpA (17·19%) and hlyA (14·06%) genes. In this study, integron associated-antibiotic resistance genes have been identified in Proteeae isolates in a considerable range representing clear threats to public health. SIGNIFICANCE AND IMPACT OF THE STUDY: In this study, multidrug-resistant Proteeae isolates had several antibiotic resistance genes. Integrons are important contributors to the development and dissemination of antibiotic resistance. We could detect both class 1 and 2 integrons and several gene cassette arrays in class 1 integron. The gene cassette arrays of the Class 2 integrons contained IMP27-dfrA1-aadA1-catB2-ybeA-ybgA in two isolates. To the best of our knowledge this is the first study to report detection of IMP27 in Providencia rettgeri isolates. All results indicate that healthy pet turtles act as potential reservoirs for Proteeae species with zoonotic potential.
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Affiliation(s)
- H N K S Pathirana
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | - G W Shin
- Bio-Safety Research Institute and College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
| | - S H M P Wimalasena
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | - S Hossain
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | - B C J De Silva
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | - P S Dahanayake
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | - G-J Heo
- Laboratory of Aquatic Animal Medicine, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
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Matteucci G, Giuseppe MD, Faraci L, Luparello M, Binanti D. BACTERIAL ULCERATIVE DERMATITIS IN A PIRANHA (PYGOCENTRUS NATTERERI) FED WITH FRESH FISH DIET. J Exot Pet Med 2018. [DOI: 10.1053/j.jepm.2017.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Awan F, Dong Y, Liu J, Wang N, Mushtaq MH, Lu C, Liu Y. Comparative genome analysis provides deep insights into Aeromonas hydrophila taxonomy and virulence-related factors. BMC Genomics 2018; 19:712. [PMID: 30257645 PMCID: PMC6158803 DOI: 10.1186/s12864-018-5100-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/21/2018] [Indexed: 12/19/2022] Open
Abstract
Background Aeromonas hydrophila is a potential zoonotic pathogen and primary fish pathogen. With overlapping characteristics, multiple isolates are often mislabelled and misclassified. Moreover, the potential pathogenic factors among the publicly available genomes in A. hydrophila strains of different origins have not yet been investigated. Results To identify the valid strains of A. hydrophila and their pathogenic factors, we performed a pan-genomic study. It revealed that there were 13 mislabelled strains and 49 valid strains that were further verified by Average nucleotide identity (ANI), digital DNA-DNA hybridization (dDDH) and in silico multiple locus strain typing (MLST). Multiple numbers of phages were detected among the strains and among them Aeromonas phi 018 was frequently present. The diversity in type III secretion system (T3SS) and conservation of type II and type VI secretion systems (T2SS and T6SS, respectively) among all the strains are important to study for designing future strategies. The most prevalent antibiotic resistances were found to be beta-lactamase, polymyxin and colistin resistances. The comparative analyses of sequence type (ST) 251 and other ST groups revealed that there were higher numbers of virulence factors in ST-251 than in other STs group. Conclusion Publicly available genomes have 13 mislabelled organisms, and there are only 49 valid A. hydrophila strains. This valid pan-genome identifies multiple prophages that can be further utilized. Different A. hydrophila strains harbour multiple virulence factors and antibiotic resistance genes. Identification of such factors is important for designing future treatment regimes. Electronic supplementary material The online version of this article (10.1186/s12864-018-5100-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Furqan Awan
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yuhao Dong
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jin Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Nannan Wang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Muhammad Hassan Mushtaq
- Department of Epidemiology and Public Health, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Chengping Lu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yongjie Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China.
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Ambrose SJ, Harmer CJ, Hall RM. Evolution and typing of IncC plasmids contributing to antibiotic resistance in Gram-negative bacteria. Plasmid 2018; 99:40-55. [PMID: 30081066 DOI: 10.1016/j.plasmid.2018.08.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/12/2018] [Accepted: 08/02/2018] [Indexed: 01/14/2023]
Abstract
The large, broad host range IncC plasmids are important contributors to the spread of key antibiotic resistance genes and over 200 complete sequences of IncC plasmids have been reported. To track the spread of these plasmids accurate typing to identify the closest relatives is needed. However, typing can be complicated by the high variability in resistance gene content and various typing methods that rely on features of the conserved backbone have been developed. Plasmids can be broadly typed into two groups, type 1 and type 2, using four features that differentiate the otherwise closely related backbones. These types are found in many different countries in bacteria from humans and animals. However, hybrids of type 1 and type 2 are also occasionally seen, and two further types, each represented by a single plasmid, were distinguished. Generally, the antibiotic resistance genes are located within a small number of resistance islands, only one of which, ARI-B, is found in both type 1 and type 2. The introduction of each resistance island generates a new lineage and, though they are continuously evolving via the loss of resistance genes or introduction of new ones, the island positions serve as valuable lineage-specific markers. A current type 2 lineage of plasmids is derived from an early type 2 plasmid but the sequences of early type 1 plasmids include features not seen in more recent type 1 plasmids, indicating a shared ancestor rather than a direct lineal relationship. Some features, including ones essential for maintenance or for conjugation, have been examined experimentally.
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Affiliation(s)
- Stephanie J Ambrose
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Christopher J Harmer
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia.
| | - Ruth M Hall
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
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Cao G, Allard M, Hoffmann M, Muruvanda T, Luo Y, Payne J, Meng K, Zhao S, McDermott P, Brown E, Meng J. Sequence Analysis of IncA/C and IncI1 Plasmids Isolated from Multidrug-Resistant Salmonella Newport Using Single-Molecule Real-Time Sequencing. Foodborne Pathog Dis 2018; 15:361-371. [DOI: 10.1089/fpd.2017.2385] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Guojie Cao
- Department of Nutrition and Food Science, Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park, Maryland
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Marc Allard
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Maria Hoffmann
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Tim Muruvanda
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Yan Luo
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Justin Payne
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Kevin Meng
- Department of Microbiology and Immunology, Stanford School of Medicine, Stanford University, Palo Alto, California
| | - Shaohua Zhao
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, Maryland
| | - Patrick McDermott
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, Maryland
| | - Eric Brown
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland
| | - Jianghong Meng
- Department of Nutrition and Food Science, Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park, Maryland
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Ramadan H, Ibrahim N, Samir M, Abd El-Moaty A, Gad T. Aeromonas hydrophilafrom marketed mullet (Mugil cephalus) in Egypt: PCR characterization ofβ-lactam resistance and virulence genes. J Appl Microbiol 2018; 124:1629-1637. [DOI: 10.1111/jam.13734] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/01/2018] [Accepted: 02/13/2018] [Indexed: 11/28/2022]
Affiliation(s)
- H. Ramadan
- Hygiene and Zoonoses Department; Faculty of Veterinary Medicine; Mansoura University; Mansoura 35516 Egypt
| | - N. Ibrahim
- Bacteriology, Mycology and Immunology Department; Faculty of Veterinary Medicine; Mansoura University; Mansoura 35516 Egypt
| | - M. Samir
- Zoonoses Department; Faculty of Veterinary Medicine; Zagazig University; Zagazig 44511 Egypt
| | - A. Abd El-Moaty
- Bacteriology, Mycology and Immunology Department; Faculty of Veterinary Medicine; Mansoura University; Mansoura 35516 Egypt
| | - T. Gad
- Food Hygiene and Control Department; Faculty of Veterinary Medicine; Mansoura University; Mansoura 35516 Egypt
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34
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Compatibility and entry exclusion of IncA and IncC plasmids revisited: IncA and IncC plasmids are compatible. Plasmid 2018; 96-97:7-12. [DOI: 10.1016/j.plasmid.2018.02.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/16/2018] [Accepted: 02/23/2018] [Indexed: 11/17/2022]
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The fight for invincibility: Environmental stress response mechanisms and Aeromonas hydrophila. Microb Pathog 2018; 116:135-145. [PMID: 29355702 DOI: 10.1016/j.micpath.2018.01.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/15/2018] [Accepted: 01/15/2018] [Indexed: 12/11/2022]
Abstract
Aeromonas hydrophila is a freshwater-dwelling zoonotic bacterium that has economic importance in aquaculture. In the past decade, Aeromonas hydrophila has become increasingly important because of its emergence as a food-borne zoonotic pathogen that is resistant to different treatment regimes. Being an aquatic bacterium, Aeromonas hydrophila is frequently subjected to several stressful environmental conditions, including changes in temperature, acidic pH and starvation that challenge its survival. To cope with these stressful conditions, like every cell, A. hydrophila possesses stress response mechanisms, such as alternative sigma factors, two-component systems, heat shock proteins, cold shock proteins, and acid tolerance response systems that eventually lead the fittest to survive. Moreover, the establishment of genetic variations among the strains related to environmental stress is also of great concern. This review presents the understandings based on inter-strain variations and stress response behavior of A. hydrophila that are important to control the increasing outbreaks of this bacterium in both human populations and aquaculture.
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36
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Tomova A, Ivanova L, Buschmann AH, Godfrey HP, Cabello FC. Plasmid-Mediated Quinolone Resistance (PMQR) Genes and Class 1 Integrons in Quinolone-Resistant Marine Bacteria and Clinical Isolates of Escherichia coli from an Aquacultural Area. MICROBIAL ECOLOGY 2018. [PMID: 28642992 DOI: 10.1007/s00248-017-1016-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Antimicrobial usage in aquaculture selects for antimicrobial-resistant microorganisms in the marine environment. The relevance of this selection to terrestrial animal and human health is unclear. Quinolone-resistance genes qnrA, qnrB, and qnrS were chromosomally located in four randomly chosen quinolone-resistant marine bacteria isolated from an aquacultural area with heavy quinolone usage. In quinolone-resistant uropathogenic clinical isolates of Escherichia coli from a coastal area bordering the same aquacultural region, qnrA was chromosomally located in two E. coli isolates, while qnrB and qnrS were located in small molecular weight plasmids in two other E. coli isolates. Three quinolone-resistant marine bacteria and three quinolone-resistant E. coli contained class 1 integrons but without physical association with PMQR genes. In both marine bacteria and uropathogenic E. coli, class 1 integrons had similar co-linear structures, identical gene cassettes, and similarities in their flanking regions. In a Marinobacter sp. marine isolate and in one E. coli clinical isolate, sequences immediately upstream of the qnrS gene were homologous to comparable sequences of numerous plasmid-located qnrS genes while downstream sequences were different. The observed commonality of quinolone resistance genes and integrons suggests that aquacultural use of antimicrobials might facilitate horizontal gene transfer between bacteria in diverse ecological locations.
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Affiliation(s)
- Alexandra Tomova
- Department of Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Larisa Ivanova
- Department of Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
| | | | - Henry P Godfrey
- Department of Pathology, New York Medical College, Valhalla, NY, USA
| | - Felipe C Cabello
- Department of Microbiology and Immunology, New York Medical College, Valhalla, NY, USA.
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37
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Ma L, Yin Z, Zhang D, Zhan Z, Wang Q, Duan X, Gao H, Liang Q, Zhao Y, Feng J, Zhao Y, Tong Y, Dai E, Zhou D. Comparative genomics of type 1 IncC plasmids from China. Future Microbiol 2017; 12:1511-1522. [PMID: 29140102 DOI: 10.2217/fmb-2017-0072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: This study dealt with genomic characterization of type 1 IncC resistance plasmids, capable of spreading across taxonomic borders, from China. Materials & methods: p112298-tetA was sequenced and compared with type 1 IncC reference plasmid pR148 and two available sequenced type 1 IncC plasmids pHS36-NDM and pVAS3-1 from China. Results: These plasmids contained one or more exogenous resistance islands, which included the ARI-A islands, the ARI-B islands, the ISEcp1-blaCMY units and the bla KPC-2 region and were inserted at various sites in the IncC backbone and thus represented three distinct lineages. Conclusion: Complex rearrangement and homologous recombination events have occurred during evolution of p112298-tetA, making it significantly differ modularly from the other three plasmids with respect to both plasmid backbone and exogenous resistance regions.
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Affiliation(s)
- Lizhi Ma
- Department of Emergency Medicine, General Hospital of Chinese People's Armed Police Forces, Beijing 100039, China
| | - Zhe Yin
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Defu Zhang
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
- College of Food Science & Project Engineering, Bohai University, Jinzhou 121013, China
| | - Zhe Zhan
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Qian Wang
- Department of Emergency Medicine, General Hospital of Chinese People's Armed Police Forces, Beijing 100039, China
| | - Xiongbo Duan
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, Hebei 050021, China
| | - Huixia Gao
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, Hebei 050021, China
| | - Quanhui Liang
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Yuzong Zhao
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
- College of Food Science & Project Engineering, Bohai University, Jinzhou 121013, China
| | - Jiao Feng
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Yachao Zhao
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Yigang Tong
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Erhei Dai
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, Hebei 050021, China
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
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38
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Sugawara Y, Akeda Y, Sakamoto N, Takeuchi D, Motooka D, Nakamura S, Hagiya H, Yamamoto N, Nishi I, Yoshida H, Okada K, Zin KN, Aye MM, Tonomo K, Hamada S. Genetic characterization of blaNDM-harboring plasmids in carbapenem-resistant Escherichia coli from Myanmar. PLoS One 2017; 12:e0184720. [PMID: 28910381 PMCID: PMC5598989 DOI: 10.1371/journal.pone.0184720] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/29/2017] [Indexed: 11/19/2022] Open
Abstract
The bacterial enzyme New Delhi metallo-β-lactamase hydrolyzes almost all β-lactam antibiotics, including carbapenems, which are drugs of last resort for severe bacterial infections. The spread of carbapenem-resistant Enterobacteriaceae that carry the New Delhi metallo-β-lactamase gene, blaNDM, poses a serious threat to public health. In this study, we genetically characterized eight carbapenem-resistant Escherichia coli isolates from a tertiary care hospital in Yangon, Myanmar. The eight isolates belonged to five multilocus-sequence types and harbored multiple antimicrobial-resistance genes, resulting in resistance against nearly all of the antimicrobial agents tested, except colistin and fosfomycin. Nine plasmids harboring blaNDM genes were identified from these isolates. Multiple blaNDM genes were found in the distinct Inc-replicon types of the following plasmids: an IncA/C2 plasmid harboring blaNDM-1 (n = 1), IncX3 plasmids harboring blaNDM-4 (n = 2) or blaNDM-7 (n = 1), IncFII plasmids harboring blaNDM-4 (n = 1) or blaNDM-5 (n = 3), and a multireplicon F plasmid harboring blaNDM-5 (n = 1). Comparative analysis highlighted the diversity of the blaNDM-harboring plasmids and their distinct characteristics, which depended on plasmid replicon types. The results indicate circulation of phylogenetically distinct strains of carbapenem-resistant E. coli with various plasmids harboring blaNDM genes in the hospital.
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Affiliation(s)
- Yo Sugawara
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- * E-mail: (YA); (YS)
| | - Yukihiro Akeda
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- Division of Infection Control and Prevention, Osaka University Hospital, Suita, Japan
- * E-mail: (YA); (YS)
| | - Noriko Sakamoto
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Dan Takeuchi
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Hideharu Hagiya
- Division of Infection Control and Prevention, Osaka University Hospital, Suita, Japan
| | - Norihisa Yamamoto
- Division of Infection Control and Prevention, Osaka University Hospital, Suita, Japan
| | - Isao Nishi
- Laboratory for Clinical Investigation, Osaka University Hospital, Suita, Japan
| | - Hisao Yoshida
- Division of Infection Control and Prevention, Osaka University Hospital, Suita, Japan
| | - Kazuhisa Okada
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Khwar Nyo Zin
- Clinical Laboratory Department, Yangon General Hospital, Yangon, Myanmar
| | - Mya Mya Aye
- Bacteriology Research Division, Department of Medical Research, Yangon, Myanmar
| | - Kazunori Tonomo
- Division of Infection Control and Prevention, Osaka University Hospital, Suita, Japan
| | - Shigeyuki Hamada
- Thailand–Japan Research Collaboration Center on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
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Sugimoto Y, Suzuki S, Nonaka L, Boonla C, Sukpanyatham N, Chou HY, Wu JH. The novel mef (C)– mph (G) macrolide resistance genes are conveyed in the environment on various vectors. J Glob Antimicrob Resist 2017; 10:47-53. [DOI: 10.1016/j.jgar.2017.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 03/22/2017] [Accepted: 03/22/2017] [Indexed: 11/29/2022] Open
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Lei CW, Kong LH, Ma SZ, Liu BH, Chen YP, Zhang AY, Wang HN. A novel type 1/2 hybrid IncC plasmid carrying fifteen antimicrobial resistance genes recovered from Proteus mirabilis in China. Plasmid 2017; 93:1-5. [PMID: 28757095 DOI: 10.1016/j.plasmid.2017.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/13/2017] [Accepted: 07/25/2017] [Indexed: 11/26/2022]
Abstract
IncC plasmids are of great concern as vehicles of broad-spectrum cephalosporins and carbapenems resistance genes blaCMY and blaNDM. The aim of this study was to sequence and characterize a multidrug resistance (MDR) IncC plasmid (pPm14C18) recovered from Proteus mirabilis. pPm14C18 was identified in a CMY-2-producing P. mirabilis isolate from chicken in China in 2014, and could be transferred to Escherichia coli conferring an MDR phenotype. Whole genome sequencing confirmed pPm14C18 was a novel type 1/2 hybrid IncC plasmid 165,992bp in size, containing fifteen antimicrobial resistance genes. It harboured a novel MDR mosaic region comprised of a hybrid Tn21tnp-pDUmer, in which blaCTX-M-65, dfrA32 and ereA were firstly reported in IncC plasmid. Phylogenetic relationship reconstruction based on the nucleotide sequences of the 52 IncC backbones showed all type 1 IncC plasmids were clustered into one clade, and then merged with pPm14C18 and finally with the type 2 IncC plasmids and another type 1/2 hybrid IncC plasmid pYR1. The MDR IncC plasmids in P. mirabilis of animal origin might threaten public health, which should be drawn more attention.
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Affiliation(s)
- Chang-Wei Lei
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - Ling-Han Kong
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - Su-Zhen Ma
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - Bi-Hui Liu
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - Yan-Peng Chen
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - An-Yun Zhang
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China
| | - Hong-Ning Wang
- College of Life science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern China, Chengdu, People's Republic of China.
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41
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Zhu F, Yang Z, Zhang Y, Hu K, Fang W. Transcriptome differences between enrofloxacin-resistant and enrofloxacin-susceptible strains of Aeromonas hydrophila. PLoS One 2017; 12:e0179549. [PMID: 28708867 PMCID: PMC5510800 DOI: 10.1371/journal.pone.0179549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 05/30/2017] [Indexed: 11/19/2022] Open
Abstract
Enrofloxacin is the most commonly used antibiotic to control diseases in aquatic animals caused by A. hydrophila. This study conducted de novo transcriptome sequencing and compared the global transcriptomes of enrofloxacin-resistant and enrofloxacin-susceptible strains. We got a total of 4,714 unigenes were assembled. Of these, 4,122 were annotated. A total of 3,280 unigenes were assigned to GO, 3,388 unigenes were classified into Cluster of Orthologous Groups of proteins (COG) using BLAST and BLAST2GO software, and 2,568 were mapped onto pathways using the Kyoto Encyclopedia of Gene and Genomes Pathway database. Furthermore, 218 unigenes were deemed to be DEGs. After enrofloxacin treatment, 135 genes were upregulated and 83 genes were downregulated. The GO terms biological process (126 genes) and metabolic process (136 genes) were the most enriched, and the terms for protein folding, response to stress, and SOS response were also significantly enriched. This study identified enrofloxacin treatment affects multiple biological functions of A. hydrophila. Enrofloxacin resistance in A. hydrophila is closely related to the reduction of intracellular drug accumulation caused by ABC transporters and increased expression of topoisomerase IV.
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Affiliation(s)
- Fengjiao Zhu
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
| | - Zongying Yang
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
- Nanchang Academy of Agricultural Sciences, Nanchang, China
| | - Yiliu Zhang
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
| | - Kun Hu
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
- * E-mail:
| | - Wenhong Fang
- East China Sea Fisheries Research Institute, Shanghai, China
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42
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Huang J, Deng S, Ren J, Tu J, Ye M, Wang M. Characterization of a blaNDM‑1‑harboring plasmid from a Salmonella enterica clinical isolate in China. Mol Med Rep 2017. [PMID: 28627648 PMCID: PMC5562004 DOI: 10.3892/mmr.2017.6733] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The plasmid-mediated transmission of antibiotic resistance genes has been reported to be involved in the development of antibiotic resistance in bacteria, and poses a serious threat for the success of bacterial infection treatment and human health worldwide. The present study used a 454 GS-FLX pyrosequencing system to determine the ~140 kb nucleotide sequence of plasmid pHS36-NDM, which was identified in a Salmonella Stanley isolate from the stool sample of an 11-month-old girl at Lishui Central Hospital, China, and which contains a New Delhi metallo-β-lactamase-1 (NDM-1) carbapenem resistance gene (blaNDM-1). The 181 open reading frames encode proteins with functions including replication, stable inheritance, antibiotic resistance and mobile genetic elements. Both horizontal transfer and passage stability-related genes were identified in pHS36-NDM, including a conserved type 4 secretion system and stbA (stable plasmid inheritance protein A). Two multidrug resistance gene islands were identified: The ISEcp1-blaCMY transposition unit which contains a CMY-6 β-lactamase gene (blaCMY-6) and a quaternary ammonium compound resistance gene (sugE); and the intI1-ISCR27 accessory region, which contained a trimethoprim resistance gene (dfrA12), two aminoglycoside resistance genes (aadA2 and rmtC), a truncated quaternary ammonium compound resistance gene (qacE∆1), a sulfonamide resistance gene (sul1), the blaNDM-1 carbapenemase and a bleomycin resistance gene (bleMBL). pHS36-NDM shared high homology with other blaNDM-1-containing plasmids reported in Sweden, Italy and Japan. However, no previous international travel history was documented for the patient and her family, even to neighboring cities. Furthermore, pHS36-NDM is of a different incompatibility group to other published blaNDM-1-carrying plasmids reported in China, with low homology in the surrounding structure of blaNDM-1. The present study will facilitate the understanding of the underlying resistance and dispersal mechanism of pHS36-NDM, and will deepen our recognition of the ongoing spread of the blaNDM-1-containing plasmids.
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Affiliation(s)
- Jinwei Huang
- Department of Infection, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, P.R. China
| | - Shanshan Deng
- Non‑Coding RNA and Drug Discovery Laboratory, School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Jianmin Ren
- Department of Infection, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, P.R. China
| | - Jianfei Tu
- Department of Infection, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, P.R. China
| | - Meiping Ye
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
| | - Minggui Wang
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
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Unique Features of Aeromonas Plasmid pAC3 and Expression of the Plasmid-Mediated Quinolone Resistance Genes. mSphere 2017; 2:mSphere00203-17. [PMID: 28567445 PMCID: PMC5444012 DOI: 10.1128/msphere.00203-17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 05/07/2017] [Indexed: 11/29/2022] Open
Abstract
In the present study, plasmid pAC3 isolated from a highly fluoroquinolone-resistant isolate of Aeromonas species was sequenced and found to contain two fluoroquinolone resistance genes, aac(6′)-Ib-cr and qnrS2. Comparative analyses of plasmid pAC3 and other Aeromonas sp. IncU-type plasmids revealed a mobile insertion cassette element with a unique structure containing a qnrS2 gene and a typical miniature inverted-repeat transposable element (MITE) structure. This study also revealed that this MITE sequence appears in other Aeromonas species plasmids and chromosomes. Our results also demonstrate that the fluoroquinolone-dependent expression of qnrS2 is associated with rsd in E. coli DH5α harboring plasmid pAC3. Our findings suggest that the mobile element may play an important role in qnrS2 dissemination and that Aeromonas species constitute an important reservoir of fluoroquinolone resistance determinants in the environment. A highly fluoroquinolone-resistant isolate of Aeromonas species was isolated from a wastewater treatment plant and found to possess multiple resistance mechanisms, including mutations in gyrA and parC, efflux pumps, and plasmid-mediated quinolone resistance (PMQR) genes. Complete sequencing of the IncU-type plasmid, pAC3, present in the strain revealed a circular plasmid DNA 15,872 bp long containing two PMQR genes [qnrS2 and aac(6′)-Ib-cr]. A mobile insertion cassette element containing the qnrS2 gene and a typical miniature inverted-repeat transposable element (MITE) structure was identified in the plasmid. The present study revealed that this MITE sequence appears in other Aeromonas species plasmids and chromosomes. Plasmid pAC3 was introduced into Escherichia coli, and its PMQR genes were expressed, resulting in the acquisition of resistance. Proteome analysis of the recipient E. coli strain harboring the plasmid revealed that aac(6′)-Ib-cr expression was constitutive and that qnrS2 expression was dependent upon fluoroquinolone stress through regulation by regulator of sigma D (Rsd). To the best of our knowledge, this is the first report to characterize a novel MITE sequence upstream of the PMQR gene within a mobile insertion cassette, as well as the regulation of qnrS2 expression. Our results suggest that this mobile element may play an important role in qnrS2 dissemination. IMPORTANCE In the present study, plasmid pAC3 isolated from a highly fluoroquinolone-resistant isolate of Aeromonas species was sequenced and found to contain two fluoroquinolone resistance genes, aac(6′)-Ib-cr and qnrS2. Comparative analyses of plasmid pAC3 and other Aeromonas sp. IncU-type plasmids revealed a mobile insertion cassette element with a unique structure containing a qnrS2 gene and a typical miniature inverted-repeat transposable element (MITE) structure. This study also revealed that this MITE sequence appears in other Aeromonas species plasmids and chromosomes. Our results also demonstrate that the fluoroquinolone-dependent expression of qnrS2 is associated with rsd in E. coli DH5α harboring plasmid pAC3. Our findings suggest that the mobile element may play an important role in qnrS2 dissemination and that Aeromonas species constitute an important reservoir of fluoroquinolone resistance determinants in the environment.
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Dang B, Mao D, Xu Y, Luo Y. Conjugative multi-resistant plasmids in Haihe River and their impacts on the abundance and spatial distribution of antibiotic resistance genes. WATER RESEARCH 2017; 111:81-91. [PMID: 28056397 DOI: 10.1016/j.watres.2016.12.046] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/19/2016] [Accepted: 12/27/2016] [Indexed: 06/06/2023]
Abstract
In this study, five classes of antibiotic resistance genes (ARGs) were quantified in sediment samples of Haihe River, China, with abundance ranging from 1.39 × 104 to 1.58 × 1010 copies/g dry weight. Meanwhile, antibiotic resistant conjugative plasmids were also isolated from these samples through filter mating assays. In total, 202 transconjugants were isolated and tested for their antibiotic resistance phenotypes, among which 26 different types of conjugative plasmids were observed. The majority of these plasmids showed a multi-resistant phenotype and the most prevalent resistance was tetracycline resistance and sulfonamide resistance. Furthermore, we tested the transfer frequencies of these plasmids, determined their genotypes and then compared the plasmid-borne ARGs with their corresponding abundance in Haihe River. Most of the isolated plasmids exhibited high transfer frequencies to the recipient strain Escherichia coli J53. Plasmids isolated from the urban areas of Haihe River have higher transfer frequencies than the rural areas. Results from comprehensive analysis of plasmid genotypes, ARG abundance and plasmid sequencing confirmed that most of the plasmid-borne ARGs were the dominant genes in the Haihe River. Therefore, conjugative plasmids isolated from the Haihe River plays a crucial role in the dissemination, abundance and spatial distribution of ARGs in Haihe River, especially some unfrequent ARGs like blaGES-1. This study will help to increase the knowledge on the conjugative plasmid-mediated ARG propagation in the environment.
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Affiliation(s)
- Bingjun Dang
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin, China; School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Daqing Mao
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China.
| | - Yan Xu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin, China; School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Yi Luo
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin, China.
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Global protein expression profile response of planktonic Aeromonas hydrophila exposed to chlortetracycline. World J Microbiol Biotechnol 2017; 33:68. [DOI: 10.1007/s11274-017-2204-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 01/04/2017] [Indexed: 12/12/2022]
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Characterization of genetic determinants involved in antibiotic resistance in Aeromonas spp. and fecal coliforms isolated from different aquatic environments. Res Microbiol 2017; 168:461-471. [PMID: 28263906 DOI: 10.1016/j.resmic.2017.02.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 02/07/2017] [Accepted: 02/15/2017] [Indexed: 12/14/2022]
Abstract
Aeromonas spp. and fecal coliforms, two abundant and cultivable bacterial populations that can be found in water ecosystems, might substantially contribute to the spread of antibiotic resistance. We investigated the presence and spread of transposons (elements that can move from one location to another in the genome), integrons (structures able to capture and incorporate gene cassettes) and resistance plasmids in strains isolated from polluted and unpolluted water. We recovered 231 Aeromonas and 250 fecal coliforms from water samplings with different degrees of pollution (hospital sewage, activated sludge of a wastewater treatment plant, river water before and after treatment and water from an alpine lake). Sixteen Aeromonas spp. and 22 fecal coliforms carried intI, coding for the site-specific integrase of class 1 integrons, while 22 Aeromonas spp. and 14 fecal coliforms carried tnpA, the transposase gene of the Tn3-family of replicative transposons. The majority of intI and tnpA-positive strains were phenotypically resistant to at least four antibiotics. Integrons and transposons were mainly located on mobilizable plasmids. Our results did not detect common mobile structures in the two populations and therefore relativize the role played by Aeromonas spp. as vectors of antimicrobial resistance determinants between water and commensal gut bacteria.
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Antimicrobial resistance of Aeromonas hydrophila isolated from different food sources: A mini-review. J Infect Public Health 2016; 9:535-44. [DOI: 10.1016/j.jiph.2015.10.006] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/03/2015] [Accepted: 10/07/2015] [Indexed: 11/17/2022] Open
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Rasmussen-Ivey CR, Figueras MJ, McGarey D, Liles MR. Virulence Factors of Aeromonas hydrophila: In the Wake of Reclassification. Front Microbiol 2016; 7:1337. [PMID: 27610107 PMCID: PMC4997093 DOI: 10.3389/fmicb.2016.01337] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 08/12/2016] [Indexed: 12/19/2022] Open
Abstract
The ubiquitous "jack-of-all-trades," Aeromonas hydrophila, is a freshwater, Gram-negative bacterial pathogen under revision in regard to its phylogenetic and functional affiliation with other aeromonads. While virulence factors are expectedly diverse across A. hydrophila strains and closely related species, our mechanistic knowledge of the vast majority of these factors is based on the molecular characterization of the strains A. hydrophila AH-3 and SSU, which were reclassified as A. piscicola AH-3 in 2009 and A. dhakensis SSU in 2013. Individually, these reclassifications raise important questions involving the applicability of previous research on A. hydrophila virulence mechanisms; however, this issue is exacerbated by a lack of genomic data on other research strains. Collectively, these changes represent a fundamental gap in the literature on A. hydrophila and confirm the necessity of biochemical, molecular, and morphological techniques in the classification of research strains that are used as a foundation for future research. This review revisits what is known about virulence in A. hydrophila and the feasibility of using comparative genomics in light of this phylogenetic revision. Conflicting data between virulence factors, secretion systems, quorum sensing, and their effect on A. hydrophila pathogenicity appears to be an artifact of inappropriate taxonomic comparisons and/or be due to the fact that these properties are strain-specific. This review audits emerging data on dominant virulence factors that are present in both A. dhakensis and A. hydrophila in order to synthesize existing data with the aim of locating where future research is needed.
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Affiliation(s)
| | - Maria J Figueras
- Departamento de Ciencias Médicas Básicas, Facultad de Medicina y Ciencias de la Salud, Institut d'Investigació Sanitària Pere Virgili, Universidad Rovira i Virgili, Reus Spain
| | - Donald McGarey
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA USA
| | - Mark R Liles
- Department of Biological Sciences, Auburn University, Auburn, AL USA
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First Report of blaIMP-14 on a Plasmid Harboring Multiple Drug Resistance Genes in Escherichia coli Sequence Type 131. Antimicrob Agents Chemother 2016; 60:5068-71. [PMID: 27246777 PMCID: PMC4958194 DOI: 10.1128/aac.00840-16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 05/25/2016] [Indexed: 12/24/2022] Open
Abstract
The blaIMP-14 carbapenem resistance gene has largely previously been observed in Pseudomonas aeruginosa and Acinetobacter spp. As part of global surveillance and sequencing of carbapenem-resistant Escherichia coli, we identified a sequence type 131 strain harboring blaIMP-14 within a class 1 integron, itself nested within an ∼54-kb multidrug resistance region on an epidemic IncA/C2 plasmid. The emergence of blaIMP-14 in this context in the ST131 lineage is of potential clinical concern.
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Grossi R, Iliopoulos CS, Mercas R, Pisanti N, Pissis SP, Retha A, Vayani F. Circular sequence comparison: algorithms and applications. Algorithms Mol Biol 2016; 11:12. [PMID: 27168761 PMCID: PMC4862142 DOI: 10.1186/s13015-016-0076-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/25/2016] [Indexed: 11/10/2022] Open
Abstract
Background Sequence comparison is a fundamental step in many important tasks in bioinformatics; from phylogenetic reconstruction to the reconstruction of genomes. Traditional algorithms for measuring approximation in sequence comparison are based on the notions of distance or similarity, and are generally computed through sequence alignment techniques. As circular molecular structure is a common phenomenon in nature, a caveat of the adaptation of alignment techniques for circular sequence comparison is that they are computationally expensive, requiring from super-quadratic to cubic time in the length of the sequences. Results In this paper, we introduce a new distance measure based on q-grams, and show how it can be applied effectively and computed efficiently for circular sequence comparison. Experimental results, using real DNA, RNA, and protein sequences as well as synthetic data, demonstrate orders-of-magnitude superiority of our approach in terms of efficiency, while maintaining an accuracy very competitive to the state of the art.
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