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Yang Y, Xie S, He F, Xu Y, Wang Z, Ihsan A, Wang X. Recent development and fighting strategies for lincosamide antibiotic resistance. Clin Microbiol Rev 2024; 37:e0016123. [PMID: 38634634 PMCID: PMC11237733 DOI: 10.1128/cmr.00161-23] [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] [Indexed: 04/19/2024] Open
Abstract
SUMMARYLincosamides constitute an important class of antibiotics used against a wide range of pathogens, including methicillin-resistant Staphylococcus aureus. However, due to the misuse of lincosamide and co-selection pressure, the resistance to lincosamide has become a serious concern. It is urgently needed to carefully understand the phenomenon and mechanism of lincosamide resistance to effectively prevent and control lincosamide resistance. To date, six mobile lincosamide resistance classes, including lnu, cfr, erm, vga, lsa, and sal, have been identified. These lincosamide resistance genes are frequently found on mobile genetic elements (MGEs), such as plasmids, transposons, integrative and conjugative elements, genomic islands, and prophages. Additionally, MGEs harbor the genes that confer resistance not only to antimicrobial agents of other classes but also to metals and biocides. The ultimate purpose of discovering and summarizing bacterial resistance is to prevent, control, and combat resistance effectively. This review highlights four promising strategies, including chemical modification of antibiotics, the development of antimicrobial peptides, the initiation of bacterial self-destruct program, and antimicrobial stewardship, to fight against resistance and safeguard global health.
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Affiliation(s)
- Yingying Yang
- National Reference Laboratory of Veterinary Drug Residues (HZAU), Huazhong Agricultural University, Wuhan, Hubei, China
- MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Shiyu Xie
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Fangjing He
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yindi Xu
- Institute of Animal Husbandry Research, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Zhifang Wang
- Institute of Animal Husbandry Research, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Awais Ihsan
- Department of Biosciences, COMSATS University Islamabad, Sahiwal campus, Islamabad, Pakistan
| | - Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU), Huazhong Agricultural University, Wuhan, Hubei, China
- MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China
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2
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Dec M, Zomer A, Webster J, Nowak T, Stępień-Pyśniak D, Urban-Chmiel R. Integrative and Conjugative Elements and Prophage DNA as Carriers of Resistance Genes in Erysipelothrix rhusiopathiae Strains from Domestic Geese in Poland. Int J Mol Sci 2024; 25:4638. [PMID: 38731857 PMCID: PMC11083093 DOI: 10.3390/ijms25094638] [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: 04/01/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Goose erysipelas is a serious problem in waterfowl breeding in Poland. However, knowledge of the characteristics of Erysipelothrix rhusiopathiae strains causing this disease is limited. In this study, the antimicrobial susceptibility and serotypes of four E. rhusiopathiae strains from domestic geese were determined, and their whole-genome sequences (WGSs) were analyzed to detect resistance genes, integrative and conjugative elements (ICEs), and prophage DNA. Sequence type and the presence of resistance genes and transposons were compared with 363 publicly available E. rhusiopathiae strains, as well as 13 strains of other Erysipelothrix species. Four strains tested represented serotypes 2 and 5 and the MLST groups ST 4, 32, 242, and 243. Their assembled circular genomes ranged from 1.8 to 1.9 kb with a GC content of 36-37%; a small plasmid was detected in strain 1023. Strains 1023 and 267 were multidrug-resistant. The resistance genes detected in the genome of strain 1023 were erm47, tetM, and lsaE-lnuB-ant(6)-Ia-spw cluster, while strain 267 contained the tetM and ermB genes. Mutations in the gyrA gene were detected in both strains. The tetM gene was embedded in a Tn916-like transposon, which in strain 1023, together with the other resistance genes, was located on a large integrative and conjugative-like element of 130 kb designated as ICEEr1023. A minor integrative element of 74 kb was identified in strain 1012 (ICEEr1012). This work contributes to knowledge about the characteristics of E. rhusiopathiae bacteria and, for the first time, reveals the occurrence of erm47 and ermB resistance genes in strains of this species. Phage infection appears to be responsible for the introduction of the ermB gene into the genome of strain 267, while ICEs most likely play a key role in the spread of the other resistance genes identified in E. rhusiopathiae.
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Affiliation(s)
- Marta Dec
- Department of Veterinary Prevention and Avian Diseases, University of Life Sciences in Lublin, 20-033 Lublin, Poland; (D.S.-P.); (R.U.-C.)
| | - Aldert Zomer
- Division of Infectious Diseases and Immunology, Faculty of Veterinaty Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands;
- WOAH Reference Laboratory for Campylobacteriosis, WHO Collaborating Centre for Reference and Research on Campylobacter and Antimicrobial Resistance from a One Health Perspective, 3584 CL Utrecht, The Netherlands
| | - John Webster
- NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, PMB 4008, Narellan, NSW 2570, Australia;
| | - Tomasz Nowak
- Diagnostic Veterinary Laboratory “Vet-Lab Brudzew Dr. Piotr Kwieciński”, 62-720 Brudzew, Poland;
| | - Dagmara Stępień-Pyśniak
- Department of Veterinary Prevention and Avian Diseases, University of Life Sciences in Lublin, 20-033 Lublin, Poland; (D.S.-P.); (R.U.-C.)
| | - Renata Urban-Chmiel
- Department of Veterinary Prevention and Avian Diseases, University of Life Sciences in Lublin, 20-033 Lublin, Poland; (D.S.-P.); (R.U.-C.)
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Yang Z, Lan T, Luo H, Li P, Wang M, Jia R, Chen S, Liu M, Zhao X, Yang Q, Wu Y, Zhang S, Huang J, Ou X, Mao S, Gao Q, Sun D, Tian B, Cheng A, Zhu D. Emergence and mobilization of a novel lincosamide resistance gene lnu(I): From environmental reservoirs to pathogenic bacteria. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167400. [PMID: 37769725 DOI: 10.1016/j.scitotenv.2023.167400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/09/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Antimicrobial resistance remains an utmost concern in human and veterinary medicine, impacting humans, animals, and the environment while significantly influencing the principles of One Health. While Riemerella anatipestifer (R. anatipestifer) is recognized as a waterfowl pathogen with multidrug-resistant properties, the specifics of its lincosamide resistance mechanism are inadequately understood. In this study, we identified a novel lincosamide resistance gene, lnu(I), in R. anatipestifer RCAD0121, and investigated its potential origin, transfer mechanisms, and dissemination status through genomic epidemiology. This exhibited 74.80 % amino acid identity with a previously reported gene, lnu(H). PCR analysis revealed lnu(I) prevalence in at least 44 R. anatipestifer isolates collected from multiple provinces in China. Furthermore, genomic mining unveiled 56 lnu(I) sequences within publicly available databases, primarily originating from environmental sources. In addition, members of the family Flavobacteriaceae were the dominant (16/56, 28.57 %) bacteria carrying the lnu(I) gene, with Flavobacterium exhibiting a similar GC content as lnu(I). Notably, specific instances of the lnu(I) gene were linked to mobile genetic elements within human and animal pathogenic bacteria. These findings suggest that Flavobacterium species within the environment could serve as potential ancestral sources of the novel lnu(I) gene, which has undergone mobilization events toward pathogenic bacteria.
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Affiliation(s)
- Zhishuang Yang
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Tianjing Lan
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Hongyan Luo
- College of Veterinary Medicine, Southwest University, Beibei, Chongqing, China
| | - Pei Li
- College of Veterinary Medicine, Southwest University, Beibei, Chongqing, China
| | - Mingshu Wang
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Renyong Jia
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Shun Chen
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Mafeng Liu
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Xinxin Zhao
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Qiao Yang
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Ying Wu
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Shaqiu Zhang
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Juan Huang
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Xumin Ou
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Sai Mao
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Qun Gao
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Di Sun
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Bin Tian
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China
| | - Anchun Cheng
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China.
| | - Dekang Zhu
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, China; International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, China.
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Naranjo-Lucena A, Slowey R. Invited review: Antimicrobial resistance in bovine mastitis pathogens: A review of genetic determinants and prevalence of resistance in European countries. J Dairy Sci 2023; 106:1-23. [PMID: 36333144 DOI: 10.3168/jds.2022-22267] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/08/2022] [Indexed: 11/06/2022]
Abstract
Antimicrobial resistance is an urgent and growing problem worldwide, both for human and animal health. In the animal health sector actions have been taken as concerns grow regarding the development and spread of antimicrobial resistance. Mastitis is the most common infection in dairy cattle. We aimed to summarize the genetic determinants found in staphylococci, streptococci, and Enterobacteriaceae isolated from mastitic milk samples and provide a comparison of percentage resistance to a variety of antimicrobials in European countries.
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Affiliation(s)
- Amalia Naranjo-Lucena
- National Reference Laboratory for Antimicrobial Resistance, Department of Agriculture, Food and the Marine, Backweston Laboratory Campus, Celbridge, Ireland W23 VW2C.
| | - Rosemarie Slowey
- National Reference Laboratory for Antimicrobial Resistance, Department of Agriculture, Food and the Marine, Backweston Laboratory Campus, Celbridge, Ireland W23 VW2C
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5
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Azpiroz MF, Burger N, Mazza M, Rodríguez G, Camou T, García Gabarrot G. Characterization of Streptococcus equi subsp. zooepidemicus isolates containing lnuB gene responsible for the L phenotype. PLoS One 2023; 18:e0284869. [PMID: 37115801 PMCID: PMC10146458 DOI: 10.1371/journal.pone.0284869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Within the framework of the β-hemolytic streptococci surveillance carried out by the National Reference Laboratory from Uruguay, three putative Streptococcus equi subsp. zooepidemicus (SEZ) were received from different health centers. Being these the first reports associated with human infections in Uruguay, the objective of this work was to confirm their identification, to determine their genetic relationship and to study their antibiotic susceptibility. Using four different methods, they were identified as SEZ, a subspecies which has been described as the etiologic agent of rare and severe zoonosis in a few cases in other countries. The three isolates presented different pulsotypes by PFGE; however, two of them appeared to be related and were confirmed as ST431 by MLST, while the remaining isolate displayed ST72. Their resistance profile exhibited an unexpected feature: despite all of them were susceptible to macrolides, they showed different levels of resistance to clindamycin, i.e. they had the so-called "L phenotype". This rare trait is known to be due to a nucleotidyl-transferase, encoded by genes of the lnu family. Although this phenotype was previously described in a few SEZ isolates, its genetic basis has not been studied yet. This was now analyzed by PCR in the three isolates and they were found to contain a lnuB gene. The lnuB sequence was identical among the three isolates and with many lnuB sequences deposited in data banks. In conclusion, for the first time in Uruguay, three SEZ isolates recovered from non-epidemiologically related cases of human invasive infection were identified. Moreover, this is the first report about the presence of a lnu gene in the S. equi species, revealing the active lateral spread of the lnuB in a new streptococcal host.
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Affiliation(s)
- María F Azpiroz
- Facultad de Ciencias, Fisiología y Genética Bacterianas, UdelaR, Montevideo, Uruguay
| | | | | | | | - Teresa Camou
- Departamento de Laboratorios de Salud Pública, Ministerio de Salud Pública, Montevideo, Uruguay
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El-Khoury C, Mansour E, Yuliandra Y, Lai F, Hawkins BA, Du JJ, Sundberg EJ, Sluis-Cremer N, Hibbs DE, Groundwater PW. The role of adjuvants in overcoming antibacterial resistance due to enzymatic drug modification. RSC Med Chem 2022; 13:1276-1299. [PMID: 36439977 PMCID: PMC9667779 DOI: 10.1039/d2md00263a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/16/2022] [Indexed: 02/03/2023] Open
Abstract
Antibacterial resistance is a prominent issue with monotherapy often leading to treatment failure in serious infections. Many mechanisms can lead to antibacterial resistance including deactivation of antibacterial agents by bacterial enzymes. Enzymatic drug modification confers resistance to β-lactams, aminoglycosides, chloramphenicol, macrolides, isoniazid, rifamycins, fosfomycin and lincosamides. Novel enzyme inhibitor adjuvants have been developed in an attempt to overcome resistance to these agents, only a few of which have so far reached the market. This review discusses the different enzymatic processes that lead to deactivation of antibacterial agents and provides an update on the current and potential enzyme inhibitors that may restore bacterial susceptibility.
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Affiliation(s)
- Christy El-Khoury
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Elissar Mansour
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Yori Yuliandra
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Felcia Lai
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Bryson A Hawkins
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Jonathan J Du
- Department of Biochemistry, Emory University School of Medicine Atlanta GA 30322 USA
| | - Eric J Sundberg
- Department of Biochemistry, Emory University School of Medicine Atlanta GA 30322 USA
| | - Nicolas Sluis-Cremer
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine Pittsburgh PA 15213 USA
| | - David E Hibbs
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
| | - Paul W Groundwater
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney Sydney NSW 2006 Australia
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Genomic Characterization of a Proteus sp. Strain of Animal Origin Co-Carrying blaNDM-1 and lnu(G). Antibiotics (Basel) 2021; 10:antibiotics10111411. [PMID: 34827349 PMCID: PMC8615141 DOI: 10.3390/antibiotics10111411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/10/2021] [Accepted: 11/14/2021] [Indexed: 11/16/2022] Open
Abstract
The emergence of carbapenem-resistant Proteus represents a serious threat to global public health due to limited antibiotic treatment options. Here, we characterize a Proteus isolate NMG38-2 of swine origin that exhibits extensive drug resistance, including carbapenems. Whole-genome sequencing based on Illumina and MinION platforms showed that NMG38-2 contains 24 acquired antibiotic resistance genes and three plasmids, among which, pNDM_NMG38-2, a pPvSC3-like plasmid, is transferable and co-carries blaNDM-1 and lnu(G). Sequence analysis of pPvSC3-like plasmids showed that they share a conserved backbone but have a diverse accessory module with complex chimera structures bearing abundant resistance genes, which are facilitated by transposons and/or homologous recombination. The acquisition of blaNDM-1 in pNDM_NMG38-2 was due to the ISCR1-mediated integration event. Comprehensive analysis of the lnu(G)-bearing cassettes carried by bacterial plasmids or chromosomes revealed a diversification of its genetic contexts, with Tn6260 and ISPst2 elements being the leading contributors to the dissemination of lnu(G) in Enterococcus and Enterobacteriaceae, respectively. In conclusion, this study provides a better understanding of the genetic features of pPvSC3-like plasmids, which represent a novel plasmid group as a vehicle mediating the dissemination of blaNDM-1 among bacteria species. Moreover, our results highlight the central roles of Tn6260 and ISPst2 in the spread of lnu(G).
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Whole-genome sequencing reveals high genetic diversity of Streptococcus uberis isolated from cows with mastitis. BMC Vet Res 2021; 17:321. [PMID: 34620161 PMCID: PMC8496047 DOI: 10.1186/s12917-021-03031-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/17/2021] [Indexed: 11/18/2022] Open
Abstract
Background Bovine mastitis is an important cause of economic loss in dairy farms. Streptococcus uberis is among the most frequently isolated bacterial species isolated from cows with mastitis. The aim of this study was to perform an in-depth genetic assessment of S. uberis strains isolated from bovine clinical mastitis (CM) and to perform a phylogenetic analysis to represent the evolutionary relationship among S. uberis sequences. Results A total of 159 isolates was genetically characterized using whole genome sequencing. According to the virulence determinants, all strains harbored the hasC, leuS, perR, purH, and purN virulence genes. Thirty-four resistance genes were identified in at least one strain. In terms of acquired genes, we observed that 152 (95.6 %) strains had a resistance gene to lincosamine (lnuD), 48 (30.2 %) to tetracycline (tetM), 4 (2.51 %) to tobramicine (ant6), and 1 to lincosamide (lsa(E)). MLST detected the Sequence Type (ST)797 (n = 23), while 85.5 % of the strains did not match to known STs. Conclusions Then, eleven distinct ST were identified after we submitted the new alleles to assign new STs. The other prevalent STs observed were ST1215 (n = 58), ST1219 (n = 35), and ST1213 (n = 15). And it was not possible to identify the MLST of four strains. Phylogenetic lineages indicated a high genomic diversity of S. uberis in our collection, confirming that most strains isolated from bovine mastitis have different reservoirs, typical of environmental pathogens.
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Zeng J, Wang Y, Fan L, Yang N, Pan J, Han Y, Wang X, Li Q, Guo G, Zheng J, Zeng W. Novel Streptococcus uberis sequence types causing bovine subclinical mastitis in Hainan, China. J Appl Microbiol 2021; 132:1666-1674. [PMID: 34309977 DOI: 10.1111/jam.15235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/15/2021] [Accepted: 07/21/2021] [Indexed: 11/27/2022]
Abstract
AIM To determine the molecular epidemiology, genotypes, and phenotypes of the major species of Streptococcus associated with bovine subclinical mastitis in Hainan, China. METHODS AND RESULTS In total, 150 subclinical mastitis milk samples were collected from two large dairy farms in Hainan. On the basis of biochemical tests and 16S rDNA sequencing, 39 samples were Streptococcus positive and the most frequently isolated species was Streptococcus uberis (n=29, 74.4%). According to multilocus sequence typing (MLST), and assays of biofilm formation, antimicrobial susceptibility, resistance and virulence genes, the S. uberis isolates were clustered into nine new sequence types (STs; ST986-ST994), but were not merged into a clonal group (except for ST991 (CC143)). All isolates produced biofilm, but most weakly. The dominant virulence pattern was hasABC + sua + gapC + oppF + pauA + mtuA + cfu (27/29, 91.1%), based on the 11 virulence genes tested. The majority of isolates (88.46%) carried at least one resistance gene and more than half (58.62%) were multidrug-resistant. The main resistance genes were linB (65.5%), ermB (37.9%), and tetS (34.5%), among the six antibiotic resistance genes and 11 antimicrobials tested. CONCLUSION Environmental S. uberis is important in bovine subclinical mastitis in Hainan. SIGNIFICANCE AND IMPACT OF THE STUDY S. uberis isolates in Hainan, China, show distinct MLST, virulence, and antibiotic resistance characteristics.
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Affiliation(s)
- Jifeng Zeng
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Yu Wang
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Lixia Fan
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Nuo Yang
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Jiwen Pan
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Yu Han
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Xin Wang
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Qian Li
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Guiying Guo
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Jiping Zheng
- Lab of Microbial Engineering (Infection and Immunity), Hainan University, Haikou, 570228, China
| | - Weixin Zeng
- Department of Pharmacy, Beijing Shijitan Hospital, Beijing, 100038, China
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Vezina B, Al-Harbi H, Ramay HR, Soust M, Moore RJ, Olchowy TWJ, Alawneh JI. Sequence characterisation and novel insights into bovine mastitis-associated Streptococcus uberis in dairy herds. Sci Rep 2021; 11:3046. [PMID: 33542314 PMCID: PMC7862697 DOI: 10.1038/s41598-021-82357-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/20/2021] [Indexed: 12/16/2022] Open
Abstract
Streptococcus uberis is one of the most frequent mastitis-causing pathogens isolated from dairy cows. Further understanding of S. uberis genetics may help elucidate the disease pathogenesis. We compared the genomes of S. uberis isolates cultured from dairy cows located in distinctly different geographic regions of Australia. All isolates had novel multi locus sequence types (MLST) indicating a highly diverse population of S. uberis. Global clonal complexes (GCC) were more conserved. GCC ST86 and GCC ST143 represented 30% of the total isolates (n = 27) and were clustered within different geographic regions. Core genome phylogeny revealed low phylogenetic clustering by region, isolation source, and MLST. Identification of putative sortase (srtA) substrates and generation of a custom putative virulence factor database revealed genes which may explain the affinity of S. uberis for mammary tissue, evasion of antimicrobial efforts and disease pathogenesis. Of 27 isolates, four contained antibiotic resistance genes including an antimicrobial resistance cluster containing mel/mef(A), mrsE, vatD, lnuD, and transposon-mediated lnuC was also identified. These are novel genes for S. uberis, which suggests interspecies lateral gene transfer. The presence of resistance genes across the two geographic regions tested within one country supports the need for a careful, tailored, implementation and monitoring of antimicrobial stewardship.
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Affiliation(s)
- Ben Vezina
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.,Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Australia
| | - Hulayyil Al-Harbi
- The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia
| | - Hena R Ramay
- International Microbiome Centre, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Martin Soust
- Terragen Biotech Pty Ltd., Coolum Beach, QLD, 4573, Australia
| | - Robert J Moore
- School of Science, RMIT University, Bundoora, Melbourne, 3083, Australia
| | - Timothy W J Olchowy
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.,Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T3R 1J3, Canada
| | - John I Alawneh
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia. .,The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.
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Nadeem SF, Gohar UF, Tahir SF, Mukhtar H, Pornpukdeewattana S, Nukthamna P, Moula Ali AM, Bavisetty SCB, Massa S. Antimicrobial resistance: more than 70 years of war between humans and bacteria. Crit Rev Microbiol 2020; 46:578-599. [PMID: 32954887 DOI: 10.1080/1040841x.2020.1813687] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Development of antibiotic resistance in bacteria is one of the major issues in the present world and one of the greatest threats faced by mankind. Resistance is spread through both vertical gene transfer (parent to offspring) as well as by horizontal gene transfer like transformation, transduction and conjugation. The main mechanisms of resistance are limiting uptake of a drug, modification of a drug target, inactivation of a drug, and active efflux of a drug. The highest quantities of antibiotic concentrations are usually found in areas with strong anthropogenic pressures, for example medical source (e.g., hospitals) effluents, pharmaceutical industries, wastewater influents, soils treated with manure, animal husbandry and aquaculture (where antibiotics are generally used as in-feed preparations). Hence, the strong selective pressure applied by antimicrobial use has forced microorganisms to evolve for survival. The guts of animals and humans, wastewater treatment plants, hospital and community effluents, animal husbandry and aquaculture runoffs have been designated as "hotspots for AMR genes" because the high density of bacteria, phages, and plasmids in these settings allows significant genetic exchange and recombination. Evidence from the literature suggests that the knowledge of antibiotic resistance in the population is still scarce. Tackling antimicrobial resistance requires a wide range of strategies, for example, more research in antibiotic production, the need of educating patients and the general public, as well as developing alternatives to antibiotics (briefly discussed in the conclusions of this article).
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Affiliation(s)
- Syeda Fatima Nadeem
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Umar Farooq Gohar
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Syed Fahad Tahir
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Hamid Mukhtar
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | | | - Pikunthong Nukthamna
- Faculty of Food Industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand.,College of Research Methodology and Cognitive Science, Burapha University, Chonburi, Thailand
| | - Ali Muhammed Moula Ali
- Faculty of Food Industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | | | - Salvatore Massa
- Faculty of Food Industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand.,Department of Agricultural, Food and Environmental Sciences, University of Foggia, Foggia, Italy
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12
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Checcucci A, Trevisi P, Luise D, Modesto M, Blasioli S, Braschi I, Mattarelli P. Exploring the Animal Waste Resistome: The Spread of Antimicrobial Resistance Genes Through the Use of Livestock Manure. Front Microbiol 2020; 11:1416. [PMID: 32793126 PMCID: PMC7387501 DOI: 10.3389/fmicb.2020.01416] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022] Open
Abstract
Antibiotic resistance is a public health problem of growing concern. Animal manure application to soil is considered to be a main cause of the propagation and dissemination of antibiotic residues, antibiotic-resistant bacteria (ARB), and antibiotic resistance genes (ARGs) in the soil-water system. In recent decades, studies on the impact of antibiotic-contaminated manure on soil microbiomes have increased exponentially, in particular for taxonomical diversity and ARGs’ diffusion. Antibiotic resistance genes are often located on mobile genetic elements (MGEs). Horizontal transfer of MGEs toward a broad range of bacteria (pathogens and human commensals included) has been identified as the main cause for their persistence and dissemination. Chemical and bio-sanitizing treatments reduce the antibiotic load and ARB. Nevertheless, effects of these treatments on the persistence of resistance genes must be carefully considered. This review analyzed the most recent research on antibiotic and ARG environmental dissemination conveyed by livestock waste. Strategies to control ARG dissemination and antibiotic persistence were reviewed with the aim to identify methods for monitoring DNA transferability and environmental conditions promoting such diffusion.
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Affiliation(s)
- Alice Checcucci
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Paolo Trevisi
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Diana Luise
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Monica Modesto
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Sonia Blasioli
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Ilaria Braschi
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Paola Mattarelli
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
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Characterization of Staphylococci and Streptococci Isolated from Milk of Bovides with Mastitis in Egypt. Pathogens 2020; 9:pathogens9050381. [PMID: 32429272 PMCID: PMC7281669 DOI: 10.3390/pathogens9050381] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to characterize staphylococci and streptococci in milk from Egyptian bovides. In total, 50 milk samples were collected from localities in the Nile Delta region of Egypt. Isolates were cultivated, identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), and antibiotic susceptibility testing was performed by the broth microdilution method. PCR amplifications were carried out, targeting resistance-associated genes. Thirty-eight Staphylococcus isolates and six Streptococcus isolates could be cultivated. Staphylococcus aureus isolates revealed a high resistance rate to penicillin, ampicillin, clindamycin, and erythromycin. The mecA gene defining methicillin-resistant Staphylococcus aureus, erm(C) and aac-aphD genes was found in 87.5% of each. Coagulase-negative staphylococci showed a high prevalence of mecA, blaZ and tetK genes. Other resistance-associated genes were found. All Streptococcus dysgalactiae isolates carried blaZ, erm(A), erm(B), erm(C) and lnuA genes, while Streptococcus suis harbored erm(C), aphA-3, tetL and tetM genes, additionally. In Streptococcus gallolyticus, most of these genes were found. The Streptococcus agalactiae isolate harbored blaZ, erm(B), erm(C), lnuA, tetK, tetL and tetM genes. Streptococcus agalactiae isolate was analyzed by DNA microarray analysis. It was determined as sequence type 14, belonging to clonal complex 19 and represented capsule type VI. Pilus and cell wall protein genes, pavA, cadD and emrB/qacA genes were identified by microarray analysis.
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14
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Hayes K, O'Halloran F, Cotter L. A review of antibiotic resistance in Group B Streptococcus: the story so far. Crit Rev Microbiol 2020; 46:253-269. [PMID: 32363979 DOI: 10.1080/1040841x.2020.1758626] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Group B Streptococcus (GBS) is the leading cause of neonatal disease worldwide, and invasive disease in adults is becoming more prevalent. Currently, some countries adopt an intrapartum antibiotic prophylaxis regime to help prevent the transmission of GBS from mother to neonate during delivery. This precaution has reduced the incidence of GBS-associated early-onset disease; however, rates of late-onset disease and stillbirths associated with GBS infections remain unchanged. GBS is still recognized as being universally susceptible to beta-lactam antibiotics; however, there have been reports of reduced susceptibility to beta-lactams, including penicillin, in some countries. Resistance to second-line antibiotics, such as erythromycin and clindamycin, remains high amongst GBS, with several countries noting increased resistance rates in recent years. Moreover, resistance to other antibiotic classes, such as fluoroquinolones and aminoglycosides, also continues to rise. In instances where patients are allergic to penicillin and second-line antibiotics are ineffective, vancomycin is administered. While vancomycin, a last resort antibiotic, still remains largely effective, there have been two documented cases of vancomycin resistance in GBS. This review provides a comprehensive analysis of the prevalence of antibiotic resistance in GBS and outlines the specific resistance mechanisms identified in GBS isolates to date.
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15
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Saed HAEMR, Ibrahim HMM. Antimicrobial profile of multidrug-resistant Streptococcus spp. isolated from dairy cows with clinical mastitis. J Adv Vet Anim Res 2020; 7:186-197. [PMID: 32607349 PMCID: PMC7320817 DOI: 10.5455/javar.2020.g409] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/11/2020] [Accepted: 02/06/2020] [Indexed: 11/07/2022] Open
Abstract
Objective: The current investigation was designed to point out the prevalence of multidrug-resistant Streptococcus spp. causing acute clinical mastitis and their pattern of antibiotic resistance in dairy cows. Materials and methods: Milk was sampled from 128 dairy cows with 191 infected quarters during the period from August 2017 to December 2018. Bacterial species were isolated from the milk samples and identified based on colony morphology and biochemical tests. Multiplex PCR was done for confirmatory detection of the Streptococcus spp. isolates. Results: The chief isolation percentages, from the sampled milk, were Escherichia coli (26%), then Staphylococcus aureus (23%), and Streptococcus dysagalactiae (23%), then Streptococcus agalactiae (20.1%), and finally coagulase-negative Staphylococci (7.7%). In confirmed PCR streptococci isolates, the antibiotic resistance genes have been detected, including macrolides antibiotic resistance genes (ermB and mefA genes), lincosamides antibiotic resistance genes (linB gene), and tetracycline resistance genes (tetM and tetO genes). Age, parity number, cleaning of bedding materials, cleaning of milking facilities, and utensils and udder cleaning practice were significant risk factors for multidrug-resistant streptococcal mastitis in dairy cows. Conclusion: The results of this study explored the phenotypic and genotypic traits of Streptococcus spp. which constitute a usual cause of acute clinical mastitis in dairy cows. The ermB, mefA, tetM, and tetO antibiotic-resistant genes were identified in streptococci isolates from dairy cows’ milk with acute clinical mastitis, indicating a public health hazard. Thus, veterinary clinical breakpoints are needed to improve surveillance data, improve the hygiene regimen on the farms, and promote the wise use of antimicrobials.
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Affiliation(s)
| | - Hussam Mohamed Mohamed Ibrahim
- Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
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Berbel D, Càmara J, García E, Tubau F, Guérin F, Giard JC, Domínguez MÁ, Cattoir V, Ardanuy C. A novel genomic island harbouring lsa(E) and lnu(B) genes and a defective prophage in a Streptococcus pyogenes isolate resistant to lincosamide, streptogramin A and pleuromutilin antibiotics. Int J Antimicrob Agents 2019; 54:647-651. [PMID: 31476434 DOI: 10.1016/j.ijantimicag.2019.08.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/28/2019] [Accepted: 08/24/2019] [Indexed: 10/26/2022]
Abstract
A lincosamide-resistant and macrolide-susceptible phenotype has not been described to date in Streptococcus pyogenes [group A streptococcus (GAS)]. The aim of this study was to characterize a GAS isolate susceptible to macrolides but resistant to lincosamide, streptogramin A and pleuromutilin antibiotics. Antimicrobial susceptibility was tested using the microdilution broth method and the resistance phenotype was tested by D-test. The GAS2887HUB isolate was subjected to whole-genome sequencing. The isolate showed a positive Gots' test (clindamycin inactivation). Whole-genome sequencing revealed that the strain was ST10 and emm93, and had five resistance genes [lnu(B), ant(6)-Ia, aph(3')-III, tet(M) and dfrG]. The tet(M) gene was located in a Tn916-like transposon. The lsa(E)-lnu(B)-containing sequence (inserted downstream of the rumA gene) was formed by a 39.6-kb prophage, followed by a gene cluster encoding aminoglycoside-streptothricin resistance [ant(6)Ia-sat4-aph(3')III] and lsa(E)-lnu(B) genes. This structure was not transferred by conjugation. This study identified a new genetic element carrying a determinant of lincosamide resistance in a GAS. Further molecular epidemiological surveys are needed to determine the prevalence of this mechanism of resistance in GAS.
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Affiliation(s)
- Dàmaris Berbel
- Microbiology Department, Hospital Universitari de Bellvitge, University of Barcelona, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; CIBER de Enfermedades Respiratorias, ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Jordi Càmara
- Microbiology Department, Hospital Universitari de Bellvitge, University of Barcelona, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; CIBER de Enfermedades Respiratorias, ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Ernesto García
- CIBER de Enfermedades Respiratorias, ISCIII, Madrid, Spain; Centro de Investigaciones Biológicas-CSIC, Madrid, Spain
| | - Fe Tubau
- Microbiology Department, Hospital Universitari de Bellvitge, University of Barcelona, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; CIBER de Enfermedades Respiratorias, ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine, University of Barcelona, Barcelona, Spain
| | - François Guérin
- CHU de Caen, Service de Microbiologie, Caen, France; Université de Caen Normandie, EA4655 U2RM (Équipe 'Antibio-résistance'), Caen, France
| | - Jean-Christophe Giard
- Université de Caen Normandie, EA4655 U2RM (Équipe 'Antibio-résistance'), Caen, France
| | - M Ángeles Domínguez
- Microbiology Department, Hospital Universitari de Bellvitge, University of Barcelona, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Vincent Cattoir
- CHU de Rennes, Service de Bactériologie-Hygiène hospitalière, Rennes, France; CNR de la Résistance aux Antibiotiques (laboratoire associé 'Entérocoques'), Rennes, France; Université de Rennes 1, Unité Inserm U1230, Rennes, France
| | - Carmen Ardanuy
- Microbiology Department, Hospital Universitari de Bellvitge, University of Barcelona, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; CIBER de Enfermedades Respiratorias, ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine, University of Barcelona, Barcelona, Spain.
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Wu B, Su J, Li L, Wu W, Wu J, Lu Y, Li W, Cheng J, Liang X. Phenotypic and genetic differences among group B Streptococcus recovered from neonates and pregnant women in Shenzhen, China: 8-year study. BMC Microbiol 2019. [PMID: 31395013 DOI: 10.1186/s12866–019–1551–2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Group B Streptococcus (GBS) is a leading cause of early-onset disease (EOD) and late-onset disease (LOD) in infants. We sought to investigate the antibiotic susceptibility profiles, resistance genes, virulence-related genes, serotype distribution and genotypic characteristics of GBS recovered from infected or colonized neonates and pregnant women in a tertiary teaching hospital in Shenzhen, China, from 2008 to 2015. RESULTS High resistance rates of erythromycin (66.7-100%) were detected among early-onset GBS (EOGBS), late-onset GBS (LOGBS), neonatal colonizing GBS (NCGBS) and maternal colonizing GBS (MCGBS). 89.5-100% of four groups of GBS isolates showed resistance to tetracycline. More than 90 % of erythromycin resistant isolates of EOGBS (8/8, 100%), LOGBS (16/17, 94.1%) and NCGBS (10/11, 90.9%) harbored ermB, while only 9.1-17.6% harbored mefA/E. By contrast, 55.8% (24/43) and 62.8% (27/43) of erythromycin resistant MCGBS isolates carried ermB and mefA/E genes, respectively. The tetO gene was more common in tetracycline resistant EOGBS (10/11, 90.9%), LOGBS (17/17, 100%) and NCGBS (10/11, 90.9%), compared to tetracycline resistant MCGBS (12/51, 23.5%). Additionally, the tetM gene accounted for 90.9% (10/11), 76.5% (13/17), 45.5% (5/11) and 80.4% (41/51) of four groups of isolates, respectively. Serotype III was the most predominant in EOGBS (8/12, 66.7%) and LOGBS (15/17, 88.2%), while serotype Ib accounted for 50.0% (6/12) of NCGBS, and serotype Ia and III accounted for 45.6% (26/57) and 33.3% (19/57) of MCGBS, respectively. Sequence type 17 (ST17) was the most common in EOGBS (6/12, 50%) and LOGBS (12/17, 70.6%), while ST12 was predominant in NCGBS (5/12, 41.7%), and five STs (ST19, ST23, ST12, ST103 and ST485) accounted for 66.7% (38/57) of the MCGBS. All serotype III-ST17 isolates recovered from neonates were associated with invasive infections. CONCLUSIONS This study shows the meaningful differences in molecular mechanisms of resistance to erythromycin and tetracycline, and the prevalence of serotypes and STs among GBS recovered from neonates and pregnant women. ST17 is predominant in neonatal invasive GBS, but rare in NCGBS and MCGBS.
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Affiliation(s)
- Benqing Wu
- Department of Neonatal Intensive Care Unit, University of Chinese Academy of Science-Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Jinzhen Su
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Li Li
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Weiyuan Wu
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China.
| | - Jingsong Wu
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Yuemei Lu
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Wenqing Li
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Jin'e Cheng
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
| | - Xunhong Liang
- Department of Laboratory Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Key Laboratory of Pathogenic Microorganism and Bacterial Resistance Surveillance in Shenzhen, Shenzhen, Guangdong, China
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18
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Phenotypic and genetic differences among group B Streptococcus recovered from neonates and pregnant women in Shenzhen, China: 8-year study. BMC Microbiol 2019; 19:185. [PMID: 31395013 PMCID: PMC6688368 DOI: 10.1186/s12866-019-1551-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 07/23/2019] [Indexed: 02/04/2023] Open
Abstract
Background Group B Streptococcus (GBS) is a leading cause of early-onset disease (EOD) and late-onset disease (LOD) in infants. We sought to investigate the antibiotic susceptibility profiles, resistance genes, virulence-related genes, serotype distribution and genotypic characteristics of GBS recovered from infected or colonized neonates and pregnant women in a tertiary teaching hospital in Shenzhen, China, from 2008 to 2015. Results High resistance rates of erythromycin (66.7–100%) were detected among early-onset GBS (EOGBS), late-onset GBS (LOGBS), neonatal colonizing GBS (NCGBS) and maternal colonizing GBS (MCGBS). 89.5–100% of four groups of GBS isolates showed resistance to tetracycline. More than 90 % of erythromycin resistant isolates of EOGBS (8/8, 100%), LOGBS (16/17, 94.1%) and NCGBS (10/11, 90.9%) harbored ermB, while only 9.1–17.6% harbored mefA/E. By contrast, 55.8% (24/43) and 62.8% (27/43) of erythromycin resistant MCGBS isolates carried ermB and mefA/E genes, respectively. The tetO gene was more common in tetracycline resistant EOGBS (10/11, 90.9%), LOGBS (17/17, 100%) and NCGBS (10/11, 90.9%), compared to tetracycline resistant MCGBS (12/51, 23.5%). Additionally, the tetM gene accounted for 90.9% (10/11), 76.5% (13/17), 45.5% (5/11) and 80.4% (41/51) of four groups of isolates, respectively. Serotype III was the most predominant in EOGBS (8/12, 66.7%) and LOGBS (15/17, 88.2%), while serotype Ib accounted for 50.0% (6/12) of NCGBS, and serotype Ia and III accounted for 45.6% (26/57) and 33.3% (19/57) of MCGBS, respectively. Sequence type 17 (ST17) was the most common in EOGBS (6/12, 50%) and LOGBS (12/17, 70.6%), while ST12 was predominant in NCGBS (5/12, 41.7%), and five STs (ST19, ST23, ST12, ST103 and ST485) accounted for 66.7% (38/57) of the MCGBS. All serotype III-ST17 isolates recovered from neonates were associated with invasive infections. Conclusions This study shows the meaningful differences in molecular mechanisms of resistance to erythromycin and tetracycline, and the prevalence of serotypes and STs among GBS recovered from neonates and pregnant women. ST17 is predominant in neonatal invasive GBS, but rare in NCGBS and MCGBS. Electronic supplementary material The online version of this article (10.1186/s12866-019-1551-2) contains supplementary material, which is available to authorized users.
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Zhou K, Zhu D, Tao Y, Xie L, Han L, Zhang Y, Sun J. New genetic context of lnu(B) composed of two multi-resistance gene clusters in clinical Streptococcus agalactiae ST-19 strains. Antimicrob Resist Infect Control 2019; 8:117. [PMID: 31346458 PMCID: PMC6632187 DOI: 10.1186/s13756-019-0563-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 06/18/2019] [Indexed: 11/25/2022] Open
Abstract
Background Clindamycin is a lincosamide antibiotic used to treat staphylococcal and streptococcal infections. Reports of clinical Streptococcus agalactiae isolates with the rare lincosamide resistance/macrolide susceptibility (LR/MS) phenotype are increasing worldwide. In this study, we characterised three clinical S. agalactiae strains with the unusual L phenotype from China. Methods Three clinical S. agalactiae strains, Sag3, Sag27 and Sag4104, with the L phenotype were identified from 186 isolates collected from 2016 to 2018 in Shanghai, China. The MICs of clindamycin, erythromycin, tetracycline, levofloxacin, and penicillin were determined using Etest. PCR for the lnu(B) gene was conducted. Whole genome sequencing and sequence analysis were carried out to investigate the genetic context of lnu(B). Efforts to transfer lincomycin resistance by conjugation and to identify the circular form by inverse PCR were made. Results Sag3, Sag27, and Sag4104 were susceptible to erythromycin (MIC ≤0.25 mg/L) but resistant to clindamycin (MIC ≥1 mg/L). lnu(B) was found to be responsible for the L phenotype. lnu(B) in Sag3 and Sag27 were chromosomally located in an aadE-spw-lsa(E)-lnu(B) resistance gene cluster adjacent to an upstream 7-kb tet(L)-cat resistance gene cluster. Two resistance gene clusters were flanked by the IS6-like element, IS1216. Sag4104 only contained partial genes of aadE-spw-lsa(E)-lnu(B) resistance gene cluster and was also flanked by IS1216. Conclusion These results established the presence of the L phenotype associated with lnu(B) in clinical S. agalactiae isolates in China. The lnu(B)-containing multi-resistance gene cluster possibly acts as a composite transposon flanked by IS1216 and as a vehicle for the dissemination of multidrug resistance among S. agalactiae.
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Affiliation(s)
- Kaixin Zhou
- 1Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
| | - Dongan Zhu
- 2Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Huinan Town, Pudong, Shanghai, 201399 China
| | - Ying Tao
- 1Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
| | - Lianyan Xie
- 1Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
| | - Lizhong Han
- 1Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
| | - Yibo Zhang
- 3Department of Hospital infection control, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
| | - Jingyong Sun
- 1Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025 China
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Molecules that Inhibit Bacterial Resistance Enzymes. Molecules 2018; 24:molecules24010043. [PMID: 30583527 PMCID: PMC6337270 DOI: 10.3390/molecules24010043] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/14/2022] Open
Abstract
Antibiotic resistance mediated by bacterial enzymes constitutes an unmet clinical challenge for public health, particularly for those currently used antibiotics that are recognized as "last-resort" defense against multidrug-resistant (MDR) bacteria. Inhibitors of resistance enzymes offer an alternative strategy to counter this threat. The combination of inhibitors and antibiotics could effectively prolong the lifespan of clinically relevant antibiotics and minimize the impact and emergence of resistance. In this review, we first provide a brief overview of antibiotic resistance mechanism by bacterial secreted enzymes. Furthermore, we summarize the potential inhibitors that sabotage these resistance pathways and restore the bactericidal activity of inactive antibiotics. Finally, the faced challenges and an outlook for the development of more effective and safer resistance enzyme inhibitors are discussed.
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Abstract
The genus Streptococcus includes Gram-positive organisms shaped in cocci and organized in chains. They are commensals, pathogens, and opportunistic pathogens for humans and animals. Most Streptococcus species of veterinary relevance have a specific ecological niche, such as S. uberis, which is almost exclusively an environmental pathogen causing bovine mastitis. In contrast, S. suis can be considered as a true zoonotic pathogen, causing specific diseases in humans after contact with infected animals or derived food products. Finally, Streptococcus species such as S. agalactiae can be sporadically zoonotic, even though they are pathogens of both humans and animals independently. For clarification, a short taxonomical overview will be given here to highlight the diversity of streptococci that infect animals. Several families of antibiotics are used to treat animals for streptococcal infections. First-line treatments are penicillins (alone or in combination with aminoglycosides), macrolides and lincosamides, fluoroquinolones, and tetracyclines. Because of the selecting role of antibiotics, resistance phenotypes have been reported in streptococci isolated from animals worldwide. Globally, the dynamic of resistance acquisition in streptococci is slower than what is experienced in Enterobacteriaceae, probably due to the much more limited horizontal spread of resistance genes. Nonetheless, transposons or integrative and conjugative elements can disseminate resistance determinants among streptococci. Besides providing key elements on the prevalence of resistance in streptococci from animals, this article will also largely consider the mechanisms and molecular epidemiology of the major types of resistance to antimicrobials encountered in the most important streptococcal species in veterinary medicine.
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Fabre A, Oleastro M, Nunes A, Santos A, Sifré E, Ducournau A, Bénéjat L, Buissonnière A, Floch P, Mégraud F, Dubois V, Lehours P. Whole-Genome Sequence Analysis of Multidrug-Resistant Campylobacter Isolates: a Focus on Aminoglycoside Resistance Determinants. J Clin Microbiol 2018; 56:e00390-18. [PMID: 29976591 PMCID: PMC6113490 DOI: 10.1128/jcm.00390-18] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 06/28/2018] [Indexed: 01/03/2023] Open
Abstract
A whole-genome sequencing (WGS) approach was conducted in order to identify the molecular determinants associated with antimicrobial resistance in 12 multidrug-resistant Campylobacter jejuni and Campylobacter coli isolates, with a focus on aminoglycoside resistance determinants. Two variants of a new aminoglycoside phosphotransferase gene [aph(2″)-Ii1 and aph(2″)-Ii2 ] putatively associated with gentamicin resistance were found. In addition, the following new genes were identified for the first time in Campylobacter: a lincosamide nucleotidyltransferase gene [lnu(G)], likely associated with lincomycin resistance, and two resistance enzyme genes (spw and apmA) similar to those found in Staphylococcus aureus, which may confer spectinomycin and gentamicin resistance, respectively. A C1192T mutation of the 16S rRNA gene that may be involved in spectinomycin resistance was also found in a C. coli isolate. Genes identified in the present study were located either on the bacterial chromosome or on plasmids that could be transferred naturally. Their role in aminoglycoside resistance remains to be supported by genetic studies. Regarding the other antimicrobial agents studied, i.e., ampicillin, ciprofloxacin, erythromycin, and tetracycline, a perfect correlation between antimicrobial phenotypes and genotypes was found. Overall, our data suggest that WGS analysis is a powerful tool for identifying resistance determinants in Campylobacter and can disclose the full genetic elements associated with resistance, including antimicrobial compounds not tested routinely in antimicrobial susceptibility testing.
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Affiliation(s)
- Adrien Fabre
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Monica Oleastro
- National Reference Laboratory of Gastrointestinal Infections, Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - Alexandra Nunes
- Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - Andrea Santos
- National Reference Laboratory of Gastrointestinal Infections, Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - Elodie Sifré
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Astrid Ducournau
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Lucie Bénéjat
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Alice Buissonnière
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Pauline Floch
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | - Francis Mégraud
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
| | | | - Philippe Lehours
- CHU de Bordeaux, National Reference Center for Campylobacter and Helicobacter, Bordeaux, France
- INSERM, University of Bordeaux, UMR1053 Bordeaux Research in Translational Oncology, BaRITOn, Bordeaux, France
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Hamjinda NS, Chiemchaisri W, Watanabe T, Honda R, Chiemchaisri C. Toxicological assessment of hospital wastewater in different treatment processes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:7271-7279. [PMID: 26099595 DOI: 10.1007/s11356-015-4812-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 05/28/2015] [Indexed: 06/04/2023]
Abstract
This study surveyed the hospital wastewater characters focusing on antibiotic contamination in seven hospitals in Bangkok. It detected 19 antibiotics of which the high-frequent detection were quinolones such as ofloxacin + levofloxacin, norfloxacin, ciprofloxacin including sulfamethoxazole. Norfloxacin and ciprofloxacin appeared the highest concentrations of 12.11 and 9.60 μg/L, respectively. Most antibiotic concentrations in the wastewaters of the studied hospitals gave a good correlation (r 2 = 0.77-0.99) to the amount of usage. In this study, batch acute toxicity tests were performed to assess the toxicity of hospital wastewater on mixed liquor, freshwater algae (Chlorella vulgaris and Scenedesmus quadricauda), and microcrustacean (Moina macrocopa). The hospital wastewaters could inhibit the mixed liquor growth and gave similar toxic levels among test species: algae and microcrustacean (9.81-13.63 and 2.62-3.09 TU, respectively). The conventional activated sludge (CAS) and rotating biological contactor (RBC) could remove fluoroquinolones and tetracycline via biomass adsorption. After treatment, most of treatment could reduce the toxicity. Nevertheless, the effluent gave slight toxicity on some test species which might be caused from chlorination and a common toxicant (NH3-N).
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Affiliation(s)
- Nutta Sangnarin Hamjinda
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, 50 Ngamwongwan Rd., Chatuchak, Bangkok, 10900, Thailand
| | - Wilai Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, 50 Ngamwongwan Rd., Chatuchak, Bangkok, 10900, Thailand.
| | - Toru Watanabe
- Department of Food, Life and Environmental Science, Faculty of Agriculture, Yamagata University, 1-23 Wakaba-machi, Tsuruoka, Yamagata, 997-8555, Japan
| | - Ryo Honda
- Research Center for Sustainable Energy and Technology (RSET), Institute of Science and Engineering, Kanazawa University, Kanazawa, Japan
| | - Chart Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, 50 Ngamwongwan Rd., Chatuchak, Bangkok, 10900, Thailand
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Wang M, Cai C, Zhang B, Liu H. Characterization and mechanism analysis of lincomycin biodegradation with Clostridium sp. strain LCM-B isolated from lincomycin mycelial residue (LMR). CHEMOSPHERE 2018; 193:611-617. [PMID: 29169137 DOI: 10.1016/j.chemosphere.2017.11.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 10/31/2017] [Accepted: 11/12/2017] [Indexed: 06/07/2023]
Abstract
Lincomycin mycelial residue (LMR) is the restricted resource because it contains residual lincomycin, which is producing potential risks to the environment and human health. In this study, lincomycin-degrading strain LCM-B was isolated and identified as Clostridium sp. in the LMR. Strain LCM-B was able to degrade 62.03% of lincomycin at the initial concentration of 100 mg L-1 after incubation for 10 d, while only 15.61% of lincomycin was removed at the initial concentration of 500 mg L-1. The removal efficiency of lincomycin by strain LCM-B decreased as the initial concentration increased. Gene lnuB (which encodes the nucleotidyl transferase) was detected in the isolated strain, and it was proven to participate in lincomycin biodegradation based on the analysis of degradation products and pathway. The results provide a relatively complete understanding of lincomycin biodegradation mechanism. Strain LCM-B is promising to eliminate lincomycin from the LMR.
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Affiliation(s)
- Mengmeng Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chen Cai
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Bo Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Huiling Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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25
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Zhu XQ, Wang XM, Li H, Shang YH, Pan YS, Wu CM, Wang Y, Du XD, Shen JZ. Novel lnu(G) gene conferring resistance to lincomycin by nucleotidylation, located on Tn6260 from Enterococcus faecalis E531. J Antimicrob Chemother 2017; 72:993-997. [PMID: 28039271 DOI: 10.1093/jac/dkw549] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 11/22/2016] [Indexed: 11/12/2022] Open
Abstract
Objectives To identify a novel putative lincosamide resistance gene determinant in a swine Enterococcus faecalis E531 exhibiting a lincosamide resistance/macrolide susceptibility (L R M S ) phenotype and to determine its location and genetic environment. Methods The whole genomic DNA of E. faecalis E531, which tested negative for the known lincosamide nucleotidyltransferase genes, was sequenced. A putative lincosamide resistance gene determinant was cloned into an Escherichia coli - E. faecalis shuttle vector (pAM401) and transformed into E. faecalis JH2-2. The MICs were determined by the microbroth dilution method. Inactivity of lincomycin was examined by UPLC-MS/MS. Inverse PCR and primer walking were used to explore the genetic environment based on the assembled sequence. Results A novel resistance gene, designated lnu (G), which encodes a putative lincosamide nucleotidyltransferase, was found in E. faecalis E531. The deduced Lnu(G) amino acid sequence displayed 76.0% identity to Lnu(B) in Enterococcus faecium . Both E. faecalis E531 and E. faecalis JH2-2 harbouring pAM401- lnu (G) showed a 4-fold increase in the MICs of lincomycin, compared with E. faecalis JH2-2 or E. faecalis JH2-2 harbouring empty vector pAM401 only. UPLC-MS/MS demonstrated that the Lnu(G) enzyme catalysed adenylylation of lincomycin. The genetic environment analysis revealed that the lnu (G) gene was embedded into a novel putative transposon, designated Tn 6260 , which was active. Conclusions A novel lincosamide nucleotidyltransferase gene lnu (G) was identified in E. faecalis . The location of the lnu (G) gene on a mobile element Tn 6260 makes it easy to disseminate.
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Affiliation(s)
- Xiao-Qing Zhu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Xiao-Ming Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Hui Li
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Yan-Hong Shang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Yu-Shan Pan
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Cong-Ming Wu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Xiang-Dang Du
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Jian-Zhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
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26
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Luo HY, Liu MF, Wang MS, Zhao XX, Jia RY, Chen S, Sun KF, Yang Q, Wu Y, Chen XY, Biville F, Zou YF, Jing B, Cheng AC, Zhu DK. A novel resistance gene, lnu(H), conferring resistance to lincosamides in Riemerella anatipestifer CH-2. Int J Antimicrob Agents 2017; 51:136-139. [PMID: 28843817 DOI: 10.1016/j.ijantimicag.2017.08.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 08/08/2017] [Accepted: 08/15/2017] [Indexed: 11/19/2022]
Abstract
The Gram-negative bacterium Riemerella anatipestifer CH-2 is resistant to lincosamides, having a lincomycin (LCM) minimum inhibitory concentration (MIC) of 128 µg/mL. The G148_1775 gene of R. anatipestifer CH-2, designated lnu(H), encodes a 260-amino acid protein with ≤41% identity to other reported lincosamide nucleotidylyltransferases. Escherichia coli RosettaTM (DE3) containing the pBAD24-lnu(H) plasmid showed four- and two-fold increases in the MICs of LCM and clindamycin (CLI), respectively. A kinetic assay of the purified Lnu(H) enzyme for LCM and CLI showed that the protein could inactive lincosamides. Mass spectrometry analysis demonstrated that the Lnu(H) enzyme catalysed adenylylation of lincosamides. In addition, an lnu(H) gene deletion strain exhibited 512- and 32-fold decreases in LCM and CLI MICs, respectively. The wild-type level of lincosamide resistance could be restored by complementation with a shuttle plasmid carrying the lnu(H) gene. The transformant R. anatipestifer ATCC 11845 [lnu(H)] acquired by natural transformation also exhibited high-level lincosamide resistance. Moreover, among 175 R. anatipestifer field isolates, 56 (32.0%) were positive for the lnu(H) gene by PCR. In conclusion, Lnu(H) is a novel lincosamide nucleotidylyltransferase that inactivates LCM and CLI by nucleotidylylation, thus conferring high-level lincosamide resistance to R. anatipestifer CH-2.
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Affiliation(s)
- Hong-Yan Luo
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China
| | - Ma-Feng Liu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ming-Shu Wang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xin-Xin Zhao
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ren-Yong Jia
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China
| | - Shun Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Kun-Feng Sun
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qiao Yang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ying Wu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiao-Yue Chen
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China
| | - Francis Biville
- Département Infection et epidémiologie, Institut Pasteur, Paris, France
| | - Yuan-Feng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Bo Jing
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - An-Chun Cheng
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan, China.
| | - De-Kang Zhu
- Research Center of Avian Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China.
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Singh N, Pagariya D, Jain S, Naik S, Kishore N. Interaction of copper (II) complexes by bovine serum albumin: spectroscopic and calorimetric insights. J Biomol Struct Dyn 2017; 36:2449-2462. [DOI: 10.1080/07391102.2017.1355848] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Namrata Singh
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai 400076, India
| | - Darshana Pagariya
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai 400076, India
| | - Surbhi Jain
- Department of Chemistry, Central University of Rajasthan, Ajmer-305817, Rajasthan, India
| | - Sunil Naik
- Department of Chemistry, Central University of Rajasthan, Ajmer-305817, Rajasthan, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai 400076, India
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28
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Kaczorek E, Małaczewska J, Wójcik R, Rękawek W, Siwicki AK. Phenotypic and genotypic antimicrobial susceptibility pattern of Streptococcus spp. isolated from cases of clinical mastitis in dairy cattle in Poland. J Dairy Sci 2017; 100:6442-6453. [PMID: 28601447 DOI: 10.3168/jds.2017-12660] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/16/2017] [Indexed: 11/19/2022]
Abstract
Mastitis of dairy cattle is one of the most frequently diagnosed diseases worldwide. The main etiological agents of mastitis are bacteria of the genus Streptococcus spp., in which several antibiotic resistance mechanisms have been identified. However, detailed studies addressing this problem have not been conducted in northeastern Poland. Therefore, the aim of our study was to analyze, on phenotypic and genotypic levels, the antibiotic resistance pattern of Streptococcus spp. isolated from clinical cases of mastitis from dairy cattle in this region of Poland. The research was conducted using 135 strains of Streptococcus (Streptococcus uberis, n = 53; Streptococcus dysgalactiae, n = 41; Streptococcus agalactiae, n = 27; other streptococci, n = 14). The investigation of the antimicrobial susceptibility to 8 active substances applied in therapy in the analyzed region, as well as a selected bacteriocin (nisin), was performed using the minimum inhibitory concentration method. The presence of selected resistance genes (n = 14) was determined via PCR. We also investigated the correlation between the presence of resistance genes and the antimicrobial susceptibility of the examined strains in vitro. The highest observed resistance of Streptococcus spp. was toward gentamicin, kanamycin, and tetracycline, whereas the highest susceptibility occurred toward penicillin, enrofloxacin, and marbofloxacin. Additionally, the tested bacteriocin showed high efficacy. The presence of 13 analyzed resistance genes was observed in the examined strains [gene mef(A) was not detected]. In most strains, at least one resistance gene, mainly responsible for resistance to tetracyclines [tet(M), tet(K), tet(L)], was observed. However, a relationship between the presence of a given resistance gene and antimicrobial susceptibility on the phenotypic level was not always observed.
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Affiliation(s)
- E Kaczorek
- Department of Microbiology and Clinical Immunology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719 Olsztyn, Poland.
| | - J Małaczewska
- Department of Microbiology and Clinical Immunology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - R Wójcik
- Department of Microbiology and Clinical Immunology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - W Rękawek
- Department of Internal Diseases with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957 Olsztyn, Poland
| | - A K Siwicki
- Department of Microbiology and Clinical Immunology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719 Olsztyn, Poland
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Identification of a Novel Lincomycin Resistance Mutation Associated with Activation of Antibiotic Production in Streptomyces coelicolor A3(2). Antimicrob Agents Chemother 2017; 61:AAC.02247-16. [PMID: 27919888 DOI: 10.1128/aac.02247-16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 11/23/2016] [Indexed: 11/20/2022] Open
Abstract
Comparative genome sequencing analysis of a lincomycin-resistant strain of Streptomyces coelicolor A3(2) and the wild-type strain identified a novel mutation conferring a high level of lincomycin resistance. Surprisingly, the new mutation was an in-frame DNA deletion in the genes SCO4597 and SCO4598, resulting in formation of the hybrid gene linR. SCO4597 and SCO4598 encode two histidine kinases, which together with SCO4596, encoding a response regulator, constitute a unique two-component system. Sequence analysis indicated that these three genes and their arrangement patterns are ubiquitous among all Streptomyces genomes sequenced to date, suggesting these genes play important regulatory roles. Gene replacement showed that this mutation was responsible for the high level of lincomycin resistance, the overproduction of the antibiotic actinorhodin, and the enhanced morphological differentiation of this strain. Moreover, heterologous expression of the hybrid gene linR in Escherichia coli conferred resistance to lincomycin in this organism. Introduction of the hybrid gene linR in various Streptomyces strains by gene engineering technology may widely activate and/or enhance antibiotic production.
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30
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Schwarz S, Shen J, Kadlec K, Wang Y, Brenner Michael G, Feßler AT, Vester B. Lincosamides, Streptogramins, Phenicols, and Pleuromutilins: Mode of Action and Mechanisms of Resistance. Cold Spring Harb Perspect Med 2016; 6:a027037. [PMID: 27549310 PMCID: PMC5088508 DOI: 10.1101/cshperspect.a027037] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Lincosamides, streptogramins, phenicols, and pleuromutilins (LSPPs) represent four structurally different classes of antimicrobial agents that inhibit bacterial protein synthesis by binding to particular sites on the 50S ribosomal subunit of the ribosomes. Members of all four classes are used for different purposes in human and veterinary medicine in various countries worldwide. Bacteria have developed ways and means to escape the inhibitory effects of LSPP antimicrobial agents by enzymatic inactivation, active export, or modification of the target sites of the agents. This review provides a comprehensive overview of the mode of action of LSPP antimicrobial agents as well as of the mutations and resistance genes known to confer resistance to these agents in various bacteria of human and animal origin.
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Affiliation(s)
- Stefan Schwarz
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), 31535 Neustadt-Mariensee, Germany
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, P.R. China
| | - Jianzhong Shen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, P.R. China
| | - Kristina Kadlec
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), 31535 Neustadt-Mariensee, Germany
| | - Yang Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, P.R. China
| | - Geovana Brenner Michael
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), 31535 Neustadt-Mariensee, Germany
| | - Andrea T Feßler
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), 31535 Neustadt-Mariensee, Germany
| | - Birte Vester
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark
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Dangwetngam M, Suanyuk N, Kong F, Phromkunthong W. Serotype distribution and antimicrobial susceptibilities of Streptococcus agalactiae isolated from infected cultured tilapia (Oreochromis niloticus) in Thailand: Nine-year perspective. J Med Microbiol 2015; 65:247-254. [PMID: 26701807 DOI: 10.1099/jmm.0.000213] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Streptococcus agalactiae (group B Streptococcus, GBS) infection remains a major problem associated with high mortality of cultured tilapia worldwide. The present study reports the serotype distribution and antimicrobial susceptibilities of GBS isolated from infected tilapia cultured in Thailand. One hundred and forty-four GBS isolates were identified by biochemical, serological and molecular analyses. Of these 144 GBS isolates, 126 were serotype Ia and 18 were serotype III. Antimicrobial susceptibilities of the 144 GBS isolates were determined by the disc diffusion method. Most GBS isolates were susceptible to lincomycin, norfloxacin, oxytetracycline, ampicillin, erythromycin and chloramphenicol, but resistant to oxolinic acid, gentamicin, sulfamethoxazole and trimethoprim. However, 17 isolates displayed an oxytetracycline-resistant phenotype and harboured the tet(M) gene. The broth microdilution method was used to determine the minimal inhibitory concentrations (MICs) of 17 oxytetracycline-resistant GBS isolates, and then minimal bactericidal concentrations (MBCs) of these isolates were evaluated. Oxytetracyline-resistant isolates were found to be susceptible to ampicillin, lincomycin, norfloxacin, erythromycin and chloramphenicol, with the MIC and MBC ranging from ≤ 0.125 to 0.5 μg ml- 1 and ≤ 0.125 to 2 μg ml- 1, respectively. Moreover, all 17 oxytetracycline-resistant isolates demonstrated resistance to trimethoprim, oxolinic acid, gentamicin, sulfamethoxazole and oxytetracycline, with the MIC and MBC ranging from 16 to ≥ 128 μg ml- 1 and ≥ 128 μg ml- 1, respectively. These findings are useful information for antibiotic usage in fish aquaculture.
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Affiliation(s)
- Machalin Dangwetngam
- Kidchakan Supamattaya Aquatic Animal Health Research Center, Department of Aquatic Science, Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Naraid Suanyuk
- Kidchakan Supamattaya Aquatic Animal Health Research Center, Department of Aquatic Science, Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Fanrong Kong
- Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR - Pathology West, Westmead Hospital, University of Sydney, Darcy Road, Westmead, New South Wales 2145, Australia
| | - Wutiporn Phromkunthong
- Kidchakan Supamattaya Aquatic Animal Health Research Center, Department of Aquatic Science, Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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Choudhary S, Talele P, Kishore N. Thermodynamic insights into drug–surfactant interactions: Study of the interactions of naporxen, diclofenac sodium, neomycin, and lincomycin with hexadecytrimethylammonium bromide by using isothermal titration calorimetry. Colloids Surf B Biointerfaces 2015; 132:313-21. [DOI: 10.1016/j.colsurfb.2015.05.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 04/06/2015] [Accepted: 05/18/2015] [Indexed: 10/23/2022]
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Stogios PJ, Evdokimova E, Morar M, Koteva K, Wright GD, Courvalin P, Savchenko A. Structural and functional plasticity of antibiotic resistance nucleotidylyltransferases revealed by molecular characterization of lincosamide nucleotidylyltransferases lnu(A) and lnu(D). J Mol Biol 2015; 427:2229-43. [PMID: 25900373 DOI: 10.1016/j.jmb.2015.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/09/2015] [Accepted: 04/12/2015] [Indexed: 01/06/2023]
Abstract
One of the main mechanisms of resistance to lincosamide and aminoglycoside antibiotics is their inactivation by O-nucleotidylyltransferases (NTases). Significant sequence variation of lincomycin nucleotidylyltransferase (Lnu) and aminoglycoside nucleotidylyltransferase (ANT) enzymes plus lack of detailed information about the molecular basis for specificity of these enzymes toward chemically distinct antibiotic scaffolds hinders development of a general strategy to curb this resistance mechanism. We conducted an extensive sequence analysis identifying 129 putative antibiotic NTases constituting six distinct subfamilies represented by Lnu(A), Lnu(B), Lnu(C), Lnu(D), Lnu(F)/(G) plus ANT(2") enzymes. Since only the Lnu(B) enzyme has been previously studied in detail, we biochemically characterized the Lnu(A) and Lnu(D) enzymes, with the former representing the most sequence distinct Lnu ortholog. We also determined the crystal structure of the Lnu(A) enzyme in complex with a lincosamide. These data suggested that, while sharing the N-terminal nucleotidylyltransferase domain, the groups of antibiotic NTases feature structurally distinct C-terminal domains (CTDs) adapted to accommodate antibiotics. Comparative structural analysis among antibiotic NTases rationalized their specificity toward lincosamides versus aminoglycosides through active-site plasticity, which allows retention of general catalytic activity while accepting alterations at multiple, specific positions contributed by both domains. Based on this structural analysis, we suggest that antibiotic NTases evolved from an ancestral nucleotidylyltransferase along independent paths according to the identified groups, characterized by structural changes in the active site and recruitment of structurally diverse CTDs. These data show the complexity of enzyme-driven antibiotic resistance and provide a basis for broadly active inhibitors by identifying the key unifying features of antibiotic NTases.
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Affiliation(s)
- Peter J Stogios
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5G 1L6; Center for Structural Genomics of Infectious Diseases (CSGID)
| | - Elena Evdokimova
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5G 1L6; Center for Structural Genomics of Infectious Diseases (CSGID)
| | - Mariya Morar
- M. G. DeGroote Institute for Infectious Disease Research, McMaster University, MDCL 2301, 1280 Main Street West, Hamilton, Ontario, Canada L8N 3Z5
| | - Kalinka Koteva
- M. G. DeGroote Institute for Infectious Disease Research, McMaster University, MDCL 2301, 1280 Main Street West, Hamilton, Ontario, Canada L8N 3Z5
| | - Gerard D Wright
- M. G. DeGroote Institute for Infectious Disease Research, McMaster University, MDCL 2301, 1280 Main Street West, Hamilton, Ontario, Canada L8N 3Z5
| | - Patrice Courvalin
- Unité des Agents Antibacteriens, Institut Pasteur, 25, rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Alexei Savchenko
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5G 1L6; Center for Structural Genomics of Infectious Diseases (CSGID).
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Abstract
In the cell, proteins are frequently modified covalently at specific amino acids with post-translational modifications, leading to a diversification of protein functions and activities. Since the introduction of high-resolution mass spectrometry, new post-translational modifications are constantly being discovered. One particular modification is the adenylylation of mammalian proteins. In adenylylation, adenosine triphosphate (ATP) is utilized to attach an adenosine monophosphate at protein threonine or tyrosine residues via a phosphodiester linkage. Adenylylation is particularly interesting in the context of infections by bacterial pathogens during which mammalian proteins are manipulated through AMP attachment via secreted bacterial factors. In this review, we summarize the role and regulation of enzymatic adenylylation and the mechanisms of catalysis. We also refer to recent methods for the detection of adenylylated proteins by modification-specific antibodies, ATP analogues equipped with chemical handles, and mass spectrometry approaches. Additionally, we review screening approaches for inhibiting adenylylation and briefly discuss related modifications such as phosphocholination and phosphorylation.
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Affiliation(s)
- Christian Hedberg
- Chemical
Biology Center (KBC), Institute of Chemistry, Umeå University, Umeå, 90187, Sweden
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Dortmund 44227, Germany
| | - Aymelt Itzen
- Center
for Integrated Protein Science Munich, Chemistry Department, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
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Genetic environment of the lnu(B) gene in a Streptococcus agalactiae clinical isolate. Antimicrob Agents Chemother 2014; 58:5636-7. [PMID: 24957835 DOI: 10.1128/aac.02630-14] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Pharmacokinetics of lincomycin following single intravenous administration in buffalo calves. Trop Anim Health Prod 2014; 46:1099-102. [PMID: 24792222 DOI: 10.1007/s11250-014-0595-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2014] [Indexed: 10/25/2022]
Abstract
Lincomycin 10 mg kg(-1), IV in buffalo calves followed two-compartment open model with high distribution rate constant α (11.2 ± 0.42 h(-1)) and K 12/K 21 ratio (4.40 ± 0.10). Distribution half-life was 0.06 ± 0.01 h and AUC was 41.6 ± 1.73 μg mL(-1) h. Large Vdarea (1.15 ± 0.03 L kg(-1)) indicated good distribution of lincomycin in various body fluids and tissues. Peak plasma level of lincomycin (71.8 ± 1.83 μg mL(-1)) was observed at 1 min as expected by IV route. The elimination half-life and MRT of lincomycin were short (3.30 ± 0.08 and 4.32 ± 0.11 h, respectively). Lincomycin 10 mg kg(-1) IV at 12-h interval would be sufficient to maintain T > MIC above 60 % for bacteria with minimum inhibitory concentrations (MIC) values ≤1.6 μg mL(-1). Favourable pharmacokinetic profile in buffalo calves and a convenient dosing interval suggest that lincomycin may be an appropriate antibacterial in buffalo species for gram-positive and anaerobic bacterial pathogens susceptible to lincomycin.
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O'Dowd H, Erwin AL, Lewis JG. Lincosamide Antibacterials. METHODS AND PRINCIPLES IN MEDICINAL CHEMISTRY 2014. [DOI: 10.1002/9783527676545.ch07] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Abstract
Aerococcus urinae may cause urinary tract infections, bacteremia, and endocarditis. No standardized susceptibility test methods or interpretive criteria have been proposed for this organism. This study reports the MIC results for 128 A. urinae isolates tested by broth microdilution. The isolates had low MICs to amoxicillin, cefotaxime, ceftriaxone, doxycycline, linezolid, meropenem, penicillin, rifampin, tetracycline, trimethoprim-sulfamethoxazole, and vancomycin. However, 55% of the isolates had MICs to clindamycin of >0.25 μg/ml, 44% had MICs to erythromycin of >0.25 μg/ml, and 16% had MICs to levofloxacin of >2 μg/ml.
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Zhao Q, Wendlandt S, Li H, Li J, Wu C, Shen J, Schwarz S, Wang Y. Identification of the novel lincosamide resistance gene lnu(E) truncated by ISEnfa5-cfr-ISEnfa5 insertion in Streptococcus suis: de novo synthesis and confirmation of functional activity in Staphylococcus aureus. Antimicrob Agents Chemother 2013; 58:1785-8. [PMID: 24366733 PMCID: PMC3957883 DOI: 10.1128/aac.02007-13] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 12/11/2013] [Indexed: 11/20/2022] Open
Abstract
The novel lincosamide resistance gene lnu(E), truncated by insertion of an ISEnfa5-cfr-ISEnfa5 segment, was identified in Streptococcus suis. The gene lnu(E) encodes a 173-amino-acid protein with ≤69.4% identity to other lincosamide nucleotidyltransferases. The lnu(E) gene and its promoter region were de novo synthesized, and Staphylococcus aureus RN4220 carrying a shuttle vector with the cloned lnu(E) gene showed a 16-fold increase in the lincomycin MIC. Mass spectrometry experiments demonstrated that Lnu(E) catalyzed the nucleotidylation of lincomycin.
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Affiliation(s)
- Qin Zhao
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Sarah Wendlandt
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Neustadt-Mariensee, Germany
| | - Hui Li
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Jun Li
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Congming Wu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Jianzhong Shen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Stefan Schwarz
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Neustadt-Mariensee, Germany
| | - Yang Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
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Li L, Sun J, Liu B, Zhao D, Ma J, Deng H, Li X, Hu F, Liao X, Liu Y. Quantification of lincomycin resistance genes associated with lincomycin residues in waters and soils adjacent to representative swine farms in China. Front Microbiol 2013; 4:364. [PMID: 24348472 PMCID: PMC3847549 DOI: 10.3389/fmicb.2013.00364] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 11/16/2013] [Indexed: 11/13/2022] Open
Abstract
Lincomycin is commonly used on swine farms for growth promotion as well as disease treatment and control. Consequently, lincomycin may accumulate in the environment adjacent to the swine farms in many ways, thereby influencing antibiotic resistance in the environment. Levels of lincomycin-resistance genes and lincomycin residues in water and soil samples collected from multiple sites near wastewater discharge areas were investigated in this study. Sixteen lincomycin-resistance and 16S rRNA genes were detected using real-time PCR. Three genes, lnu(F), erm(A), and erm(B), were detected in all water and soil samples except control samples. Lincomycin residues were determined by rapid resolution liquid chromatography-tandem mass spectrometry, with concentrations detected as high as 9.29 ng/mL in water and 0.97 ng/g in soil. A gradual reduction in the levels of lincomycin-resistance genes and lincomycin residues in the waters and soils were detected from multiple sites along the path of wastewater discharging to the surrounding environment from the swine farms. Significant correlations were found between levels of lincomycin-resistance genes in paired water and soil samples (r = 0.885, p = 0.019), and between lincomycin-resistance genes and lincomycin residues (r = 0.975, p < 0.01). This study emphasized the potential risk of dissemination of lincomycin-resistance genes such as lnu(F), erm(A), and erm(B), associated with lincomycin residues in surrounding environments adjacent to swine farms.
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Affiliation(s)
- Liang Li
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Jian Sun
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Baotao Liu
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Donghao Zhao
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Jun Ma
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Hui Deng
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Xue Li
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Fengyang Hu
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Xiaoping Liao
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Yahong Liu
- Department of Veterinary Pharmacology and Toxicology, National Reference Laboratory of Veterinary Drugs Residues, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
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Müller MP, Albers MF, Itzen A, Hedberg C. Exploring Adenylylation and Phosphocholination as Post-Translational Modifications. Chembiochem 2013; 15:19-26. [DOI: 10.1002/cbic.201300508] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Indexed: 01/07/2023]
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Porter MC, Henderson BA, Healy PE, Coombs GW, Ingram PR, McLellan D, Clark B. Can interchangeability of lincosamides be assumed in clinical practice? Comparative MICs of clindamycin and lincomycin for Streptococcus pyogenes, Streptococcus agalactiae and Staphylococcus aureus. J Antimicrob Chemother 2013; 69:856-7. [DOI: 10.1093/jac/dkt436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hansen T, Albers M, Hedberg C, Sickmann A. Adenylylation, MS, and proteomics--Introducing a "new" modification to bottom-up proteomics. Proteomics 2013; 13:955-63. [PMID: 23335384 DOI: 10.1002/pmic.201200344] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 09/24/2012] [Accepted: 10/02/2012] [Indexed: 02/03/2023]
Abstract
Although the addition of a 5'-adenosine phosphodiester group to proteins, called adenylylation, has been known for decades, the possibility that adenylylation could be a molecular switch in cellular signaling pathways has emerged recently. The distinct mass shift upon adenylation of threonine or tyrosine residues renders it a good target for MS detection and identification; however, the fragmentation of adenylylated peptides derived from proteolytic digestion of adenylylated proteins has not yet been systematically investigated. Here, we demonstrate that adenylylated peptides show loss of parts of the adenosine monophosphate (AMP) upon different fragmentation techniques. As expected, causing the least fragmentation of the AMP group, electron transfer dissociation yields less complicated spectra. In contrast, CID and higher energy collision (HCD) fragmentation caused AMP to fragment, generating characteristic ions that could be utilized in the specific identification of adenylylated peptides. The characteristic ions and losses upon CID and higher energy collision fragmentation from the AMP group turned out to be highly dependent on which amino acid was adenylylated, with different reporter ions for adenylylated threonine and tyrosine. We also investigated how adenylylation is best incorporated into search engines, exemplified by Mascot and showed that it is possible to identify adenylylation by search engines.
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Affiliation(s)
- Terkel Hansen
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
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Gravey F, Galopin S, Grall N, Auzou M, Andremont A, Leclercq R, Cattoir V. Lincosamide resistance mediated by lnu(C) (L phenotype) in a Streptococcus anginosus clinical isolate. J Antimicrob Chemother 2013; 68:2464-7. [PMID: 23812683 DOI: 10.1093/jac/dkt255] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Unique resistance to lincosamides (L phenotype) due to the production of nucleotidyltransferases (Lnu) is uncommon among Gram-positive bacteria. The aim of the study was to characterize the L phenotype in a clinical isolate of the Streptococcus milleri group. METHODS The strain UCN93 was recovered from neonatal specimens and from the mother's vaginal swab. Identification was confirmed by sequencing of the sodA gene. Antimicrobial susceptibility testing was carried out by the disc diffusion method, while MICs were determined using the agar dilution method. Screening for lnu(A), lnu(B), lnu(C) and lnu(D) genes was performed by PCR. Genetic environment and support were determined by thermal asymmetric interlaced PCR and PCR mapping. The transfer of lincomycin resistance was also attempted by conjugation. RESULTS UCN93 was unambiguously identified as Streptococcus anginosus. It was susceptible to all tested antibiotics, except lincomycin (MIC, 8 mg/L) and tetracycline (2 mg/L). The lnu(C) gene was found to be responsible for the L phenotype. It was shown that lnu(C) was associated with a gene coding for a transposase within a structure similar to the transposon MTnSag1, described once in Streptococcus agalactiae. Since MTnSag1 was found to be mobilized by Tn916 and S. anginosus UCN93 harboured a Tn916 transposon, several attempts at transfer were performed but they all failed. The lnu(C)-containing genetic element was inserted into a chromosomal intergenic sequence of S. anginosus. CONCLUSIONS Since lnu(C) has been detected in only one S. agalactiae clinical isolate so far, this is its second description among clinically relevant streptococci.
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Affiliation(s)
- François Gravey
- CHU de Caen, Service de Microbiologie & CNR de la Résistance aux Antibiotiques (laboratoire associé 'entérocoques et résistances particulières des bactéries à Gram positif'), F-14033 Caen, France
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Li Y, Al-Eryani R, Yarbrough ML, Orth K, Ball HL. Characterization of AMPylation on threonine, serine, and tyrosine using mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2011; 22:752-761. [PMID: 21472612 PMCID: PMC3391576 DOI: 10.1007/s13361-011-0084-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 01/12/2011] [Accepted: 01/13/2011] [Indexed: 05/28/2023]
Abstract
Recent studies have suggested that adenosine 5'-monophosphate (AMP) post-translational modification of proteins could represent a novel molecular signaling pathway. Mass spectrometric fragmentation characteristics of this modification have not previously been described and studied systematically. In this work, we therefore examined the fragmentation pattern of chemically synthesized peptides containing AMPylated Thr, Ser, and Tyr. The formation of characteristic ions and the influence of collision energy (CE) on the detection of characteristic ions and their relative peak intensity are reported. When peptide with AMPylated Ser/Thr underwent collision induced dissociation (CID), peaks at m/z 348.1, 136.1, and 250.1, fragments with AMP group attached, and fragments consistent with neutral loss of 347 Da were major characteristic ions; fragments consistent with neutral loss of 135 Da or 249 Da were weaker and not always detectable. The observations for Tyr AMPylation followed the same general patterns as those for Ser/Thr modification, with the exception that the ions detected for Tyr AMPylation did not include either the peak at m/z 348.1, or fragments with a mass shift of -347 Da. The results described in this paper highlight a series of diagnostic ions, which can be used not only to confidently identify the AMPylation site based on MS and MS/MS data, but also to selectively scan AMPylated peptides in complex protein mixtures.
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Affiliation(s)
- Yan Li
- Protein Chemistry Technology Center, Department of Internal Medicine, University of Texas, Southwestern Medical Center, Dallas, TX USA
| | - Rowaida Al-Eryani
- Protein Chemistry Technology Center, Department of Internal Medicine, University of Texas, Southwestern Medical Center, Dallas, TX USA
| | - Melanie L. Yarbrough
- Department of Molecular Biology, University of Texas, Southwestern Medical Center, Dallas, TX USA
| | - Kim Orth
- Department of Molecular Biology, University of Texas, Southwestern Medical Center, Dallas, TX USA
| | - Haydn L. Ball
- Protein Chemistry Technology Center, Department of Internal Medicine, University of Texas, Southwestern Medical Center, Dallas, TX USA
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Affiliation(s)
- Mariya Morar
- M.G. DeGroote Institute for Infectious Disease Research and the Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8N 3Z5, Canada;
| | - Gerard D. Wright
- M.G. DeGroote Institute for Infectious Disease Research and the Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8N 3Z5, Canada;
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Diversity and mobility of integrative and conjugative elements in bovine isolates of Streptococcus agalactiae, S. dysgalactiae subsp. dysgalactiae, and S. uberis. Appl Environ Microbiol 2010; 76:7957-65. [PMID: 20952646 DOI: 10.1128/aem.00805-10] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bovine isolates of Streptococcus agalactiae (n = 76), Streptococcus dysgalactiae subsp. dysgalactiae (n = 32), and Streptococcus uberis (n = 101) were analyzed for the presence of different integrative and conjugative elements (ICEs) and their association with macrolide, lincosamide, and tetracycline resistance. The diversity of the isolates included in this study was demonstrated by multilocus sequence typing for S. agalactiae and pulsed-field gel electrophoresis for S. dysgalactiae and S. uberis. Most of the erythromycin-resistant strains carry an ermB gene. Five strains of S. uberis that are resistant to lincomycin but susceptible to erythromycin carry the lin(B) gene, and one has both linB and lnuD genes. In contrast to S. uberis, most of the S. agalactiae and S. dysgalactiae tetracycline-resistant isolates carry a tet(M) gene. A tet(S) gene was also detected in the three species. A Tn916-related element was detected in 30 to 50% of the tetracycline-resistant strains in the three species. Tetracycline resistance was successfully transferred by conjugation to an S. agalactiae strain. Most of the isolates carry an ICE integrated in the rplL gene. In addition, half of the S. agalactiae isolates have an ICE integrated in a tRNA lysine (tRNA(Lys)) gene. Such an element is also present in 20% of the isolates of S. dysgalactiae and S. uberis. A circular form of these ICEs was detected in all of the isolates tested, indicating that these genetic elements are mobile. These ICEs could thus also be a vehicle for horizontal gene transfer between streptococci of animal and/or human origin.
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48
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Haenni M, Saras E, Chaussière S, Treilles M, Madec JY. ermB-mediated erythromycin resistance in Streptococcus uberis from bovine mastitis. Vet J 2010; 189:356-8. [PMID: 20667752 DOI: 10.1016/j.tvjl.2010.06.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Revised: 06/25/2010] [Accepted: 06/27/2010] [Indexed: 10/19/2022]
Abstract
The ermB gene was identified in 111 erythromycin resistant isolates of Streptococcus uberis from cases of bovine mastitis associated either with a constitutive (47/111) or an inducible (64/111) phenotype, as well as a phenotypic resistance to all macrolides tested. Resistance to lincosamides was identified in 14 other isolates of S. uberis from bovine mastitis cases and was mainly mediated by the linB gene; resistance conferred by a combination of two genes (linB-lnuD, ermB-linB) was also detected.
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Affiliation(s)
- Marisa Haenni
- Agence Française de Sécurité Sanitaire des Aliments, Unité Antibiorésistance et Virulence Bactérienne, 31 Avenue Tony Garnier, 69364 Lyon, France
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Keswani N, Choudhary S, Kishore N. Interaction of weakly bound antibiotics neomycin and lincomycin with bovine and human serum albumin: biophysical approach. J Biochem 2010; 148:71-84. [PMID: 20356824 DOI: 10.1093/jb/mvq035] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The thermodynamics of interaction of neomycin and lincomycin with bovine serum albumin (BSA) and human serum albumin (HSA) has been studied using isothermal titration calorimetry (ITC), in combination with UV-visible, steady state and time resolved fluorescence spectroscopic measurements. Neomycin is observed to bind weakly to BSA and HSA whereas lincomycin did not show any evidence for binding with the native state of these proteins, rather it interacts in the presence of surfactants. The ITC results suggest 1 : 1 binding stoichiometry for neomycin in the studied temperature range. The values of the van't Hoff enthalpy do not agree with the calorimetric enthalpy in the case of neomycin, suggesting conformational changes in the protein upon ligand binding, as well as with the rise in the temperature. Experiments at different ionic strengths, and in the presence of tetrabutyl ammonium bromide and surfactants suggest the predominant involvement of electrostatic interactions in the complexation process of neomycin with BSA and HSA, and non-specific interaction behaviour of lincomycin with these proteins.
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Affiliation(s)
- Neelam Keswani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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Morar M, Bhullar K, Hughes DW, Junop M, Wright GD. Structure and Mechanism of the Lincosamide Antibiotic Adenylyltransferase LinB. Structure 2009; 17:1649-1659. [DOI: 10.1016/j.str.2009.10.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 10/13/2009] [Accepted: 10/14/2009] [Indexed: 11/28/2022]
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