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Oliveira PM, Faria-Junior C, Silva DM, Matos LF, Pereira AL. Clonal complexes of carbapenem-resistant Klebsiella pneumoniae recovered from community sewage. J Water Health 2023; 21:94-108. [PMID: 36705500 DOI: 10.2166/wh.2023.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Carbapenem-resistant Klebsiella pneumoniae (CR-Kp) are life-threatening multidrug-resistant bacteria. In this study, CR-Kp strains isolated from sewage treatment plants (STPs) (n = 12) were tested for carbapenemase genes (blaKPC, blaNDM, blaIMP, blaVIM and blaOXA-48) and had their sequence types (ST) and clonal complexes (CCs) defined. A collection of clinical CR-Kp strains recovered in local hospitals was added to phylogenetic analyses along with sewage strains in order to infer clonality among CR-Kp strains. A total of 154 CR-Kp strains were isolated from raw sewage [55.8% (86/154)], treated sewage [25.3% (39/154)] and from water body downstream from STPs [18.8% (29/154)]. No CR-Kp strain was isolated from upstream water samples. blaKPC or blaNDM were detected in 143 (92.8%) strains. The occurrence of blaKPC-or-NDM CR-Kp strains was positively associated with the number of hospitalized patients in the areas serviced by STPs. Eleven STs were detected in CR-Kp strains, most of them belonging to the clinically relevant CC11 [ST11 (n = 13-28.2%) and ST340 (n = 7-15.2%)]. CCs 11, 15, 17, 147 and 2703 are shared by clinical and sewage CR-Kp strains. In conclusion, sewage harbors clinically relevant clones of CR-Kp that resist sewage treatments, contaminating water bodies downstream from STPs.
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Affiliation(s)
- Pâmela Maria Oliveira
- Postgraduate Program in Microbial Biology, Biological Sciences Institute, University of Brasília, Brasília (DF), CEP: 70910-900, Brazil
| | - Célio Faria-Junior
- Central Laboratory for Public Health (LACEN-DF), SGAN 601, Asa Norte, Brasília (DF), CEP: 70830-010, Brazil
| | - Daniely Martins Silva
- Postgraduate Program in Microbial Biology, Biological Sciences Institute, University of Brasília, Brasília (DF), CEP: 70910-900, Brazil
| | - Larissa Fernandes Matos
- Postgraduate Program in Microbial Biology, Biological Sciences Institute, University of Brasília, Brasília (DF), CEP: 70910-900, Brazil
| | - Alex Leite Pereira
- Campus of Ceilândia, University of Brasília, Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília (DF), CEP: 72220-275, Brazil E-mail:
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Pereira AL, de Oliveira PM, Faria-Junior C, Alves EG, de Castro E Caldo Lima GR, da Costa Lamounier TA, Haddad R, de Araújo WN. Environmental spreading of clinically relevant carbapenem-resistant gram-negative bacilli: the occurrence of bla KPC-or-NDM strains relates to local hospital activities. BMC Microbiol 2022; 22:6. [PMID: 34979901 PMCID: PMC8725513 DOI: 10.1186/s12866-021-02400-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 11/26/2021] [Indexed: 12/19/2022] Open
Abstract
Background Aquatic matrices impacted by sewage may shelter carbapenem-resistant (CR) Gram-negative bacilli (GNB) harboring resistance genes of public health concern. In this study, sewage treatment plants (STPs) servicing well-defined catchment areas were surveyed for the presence of CR-GNB bearing carbapenemase genes (blaKPC or blaNDM). Results A total of 325 CR-GNB were recovered from raw (RS) and treated (TS) sewage samples as well as from water body spots upstream (UW) and downstream (DW) from STPs. Klebsiella-Enterobacter (KE) group amounted to 116 isolates (35.7%). CR-KE isolates were recovered from TS, DW (35.7%) and RS samples (44.2%) (p = 0.001); but not from UW samples. KE isolates represented 65.8% of all blaKPC or blaNDM positive strains. The frequency of blaKPC-or-NDM strains was positively associated with the occurrence of district hospitals located near STPs, as well as with the number of hospitalizations and of sewer connections serviced by the STPs. blaKPC-or-NDM strains were recovered from ST samples in 7 out of 14 STPs, including four tertiary-level STPs; and from 6 out of 13 DW spots whose RS samples also had blaKPC-or-NDM strains. Conclusions Clinically relevant GNB bearing blaKPC-or-NDM resist sewage treatments and spread into environmental aquatic matrices mainly from STPs impacted by hospital activities. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02400-1.
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Affiliation(s)
- Alex Leite Pereira
- Campus of Ceilândia, University of Brasília. Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília, DF, CEP: 72220-275, Brazil.
| | - Pâmela Maria de Oliveira
- Campus of Ceilândia, University of Brasília. Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília, DF, CEP: 72220-275, Brazil
| | - Célio Faria-Junior
- Central Laboratory for Public Health (LACEN-DF), SGAN 601, Asa Norte, Brasília, DF, CEP: 70830-010, Brazil
| | - Everton Giovanni Alves
- Central Laboratory for Public Health (LACEN-DF), SGAN 601, Asa Norte, Brasília, DF, CEP: 70830-010, Brazil
| | | | - Thaís Alves da Costa Lamounier
- Campus of Ceilândia, University of Brasília. Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília, DF, CEP: 72220-275, Brazil
| | - Rodrigo Haddad
- Campus of Ceilândia, University of Brasília. Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília, DF, CEP: 72220-275, Brazil
| | - Wildo Navegantes de Araújo
- Campus of Ceilândia, University of Brasília. Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília, DF, CEP: 72220-275, Brazil
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Silva DMD, Faria-Junior C, Nery DR, Oliveira PMD, Silva LDOR, Alves EG, Lima GRDCEC, Pereira AL. Insertion sequences disrupting mgrB in carbapenem-resistant Klebsiella pneumoniae strains in Brazil. J Glob Antimicrob Resist 2020; 24:53-57. [PMID: 33246210 DOI: 10.1016/j.jgar.2020.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/20/2020] [Accepted: 11/03/2020] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES This study aimed to characterise insertional mutations disturbing themgrB gene in carbapenem-resistant Klebsiella pneumoniae (CRKp). METHODS A total of 118 clinical CRKp isolates were surveyed for polymyxin resistance and insertion sequence (IS) elements disruptingmgrB. RESULTS Of the 118 isolates, 78 (66.1%) displayed polymyxin resistance, of which 54% (42/78) hadmgrB::IS inserts. Sequencing analyses showed 13 insertion sites in mgrB. mgrB::ISSen4(IS3) was observed for the first time in CRKp. CONCLUSIONS Ten different IS elements disruptedmgrB, with a predominance (76%) of IS5 sequences.
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Affiliation(s)
- Daniely Martins da Silva
- Campus of Ceilândia, University of Brasília, Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília (DF), CEP: 72220-275, Brazil
| | - Célio Faria-Junior
- Central Laboratory for Public Health (LACEN-DF), SGAN 601, Asa Norte, Brasília (DF), CEP: 70830-010, Brazil
| | - Danielly Rocha Nery
- Campus of Ceilândia, University of Brasília, Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília (DF), CEP: 72220-275, Brazil
| | - Pâmela Maria de Oliveira
- Campus of Ceilândia, University of Brasília, Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília (DF), CEP: 72220-275, Brazil
| | | | - Everton Giovanni Alves
- Central Laboratory for Public Health (LACEN-DF), SGAN 601, Asa Norte, Brasília (DF), CEP: 70830-010, Brazil
| | | | - Alex Leite Pereira
- Campus of Ceilândia, University of Brasília, Centro Metropolitano, Conjunto A, Ceilândia Sul, Brasília (DF), CEP: 72220-275, Brazil.
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Silva ON, de la Fuente-Núñez C, Haney EF, Fensterseifer ICM, Ribeiro SM, Porto WF, Brown P, Faria-Junior C, Rezende TMB, Moreno SE, Lu TK, Hancock REW, Franco OL. An anti-infective synthetic peptide with dual antimicrobial and immunomodulatory activities. Sci Rep 2016; 6:35465. [PMID: 27804992 PMCID: PMC5090204 DOI: 10.1038/srep35465] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/30/2016] [Indexed: 12/31/2022] Open
Abstract
Antibiotic-resistant infections are predicted to kill 10 million people per year by 2050, costing the global economy $100 trillion. Therefore, there is an urgent need to develop alternative technologies. We have engineered a synthetic peptide called clavanin-MO, derived from a marine tunicate antimicrobial peptide, which exhibits potent antimicrobial and immunomodulatory properties both in vitro and in vivo. The peptide effectively killed a panel of representative bacterial strains, including multidrug-resistant hospital isolates. Antimicrobial activity of the peptide was demonstrated in animal models, reducing bacterial counts by six orders of magnitude, and contributing to infection clearance. In addition, clavanin-MO was capable of modulating innate immunity by stimulating leukocyte recruitment to the site of infection, and production of immune mediators GM-CSF, IFN-γ and MCP-1, while suppressing an excessive and potentially harmful inflammatory response by increasing synthesis of anti-inflammatory cytokines such as IL-10 and repressing the levels of pro-inflammatory cytokines IL-12 and TNF-α. Finally, treatment with the peptide protected mice against otherwise lethal infections caused by both Gram-negative and -positive drug-resistant strains. The peptide presented here directly kills bacteria and further helps resolve infections through its immune modulatory properties. Peptide anti-infective therapeutics with combined antimicrobial and immunomodulatory properties represent a new approach to treat antibiotic-resistant infections.
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Affiliation(s)
- O N Silva
- Departamento de Biologia, Instituto de Ciências Biológicas, Programa de pós-graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Juiz de Fora-MG, Brazil.,S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - C de la Fuente-Núñez
- Synthetic Biology Group, MIT Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America.,Harvard Biophysics Program, Harvard University, Boston, Massachusetts, United States of America.,The Center for Microbiome Informatics and Therapeutics, Cambridge, Massachusetts, United States of America
| | - E F Haney
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - I C M Fensterseifer
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
| | - S M Ribeiro
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - W F Porto
- Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
| | - P Brown
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - C Faria-Junior
- Curso de Odontologia, Universidade Católica de Brasília, Brazil
| | - T M B Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Curso de Odontologia, Universidade Católica de Brasília, Brazil.,Pós-graduação em Ciências da Saúde, Universidade de Brasília, Brazil
| | - S E Moreno
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - T K Lu
- Synthetic Biology Group, MIT Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America.,Harvard Biophysics Program, Harvard University, Boston, Massachusetts, United States of America.,The Center for Microbiome Informatics and Therapeutics, Cambridge, Massachusetts, United States of America
| | - R E W Hancock
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - O L Franco
- Departamento de Biologia, Instituto de Ciências Biológicas, Programa de pós-graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Juiz de Fora-MG, Brazil.,S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.,Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
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