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Giufrè M, Errico G, Del Grosso M, Pagnotta M, Palazzotti B, Ballardini M, Pantosti A, Meledandri M, Monaco M. Detection of KPC-216, a Novel KPC-3 Variant, in a Clinical Isolate of Klebsiella pneumoniae ST101 Co-Resistant to Ceftazidime-Avibactam and Cefiderocol. Antibiotics (Basel) 2024; 13:507. [PMID: 38927174 PMCID: PMC11200853 DOI: 10.3390/antibiotics13060507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/18/2024] [Accepted: 05/25/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Carbapenemase-producing Klebsiella pneumoniae (CP-KP) represents a global threat to public health, with limited antimicrobial therapeutic options. In this study, we analyzed a ceftazidime/avibactam (CAZ-AVI)-resistant K. pneumoniae isolate obtained from a patient previously exposed to CAZ-AVI expressing a novel K. pneumoniae carbapenemase (KPC)-3 variant. METHODS Antimicrobial susceptibility testing was performed using reference broth microdilution. Whole-genome sequencing (WGS) was performed using Illumina and Nanopore Technologies. Short- and long-reads were combined with Unicycler. Assemblies were investigated for multilocus sequence typing (MLST), antimicrobial resistance genes, porins, and plasmids. RESULTS The K. pneumoniae isolate (KP_RM_1) was resistant to CAZ-AVI, expanded-spectrum cephalosporins, amikacin, ertapenem, and cefiderocol (FDC) but was susceptible to tigecycline, colistin, trimethoprim/sulfamethoxazole, meropenem-vaborbactam, and imipenem-relebactam. WGS revealed that the KP_RM_1 genome is composed of a single chromosome of 5 Mbp and five circular plasmids. Further analysis showed the presence of novel blaKPC-216 located on a 72 kb plasmid. KPC-216 differs from KPC-3 by a Lysin (K) insertion at position 168 (+K168). CONCLUSIONS We report the identification of a new KPC-3 variant associated with CAZ-AVI resistance. The KPC variants associated with CAZ-AVI resistance should be determined to promptly inform clinicians and start the appropriate antimicrobial therapy.
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Affiliation(s)
- Maria Giufrè
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Giulia Errico
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Maria Del Grosso
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Michela Pagnotta
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | | | | | - Annalisa Pantosti
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | | | - Monica Monaco
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
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Pan F, Chen P, Duan Y, Yu F, Weng W, Zhang H. Prevalence of intestinal colonization and nosocomial infection with carbapenem-resistant Enterobacteriales in children: a retrospective study. Front Public Health 2023; 11:1251609. [PMID: 38074706 PMCID: PMC10702246 DOI: 10.3389/fpubh.2023.1251609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 10/09/2023] [Indexed: 12/18/2023] Open
Abstract
Objective We investigated the epidemiological surveillance of the intestinal colonization and nosocomial infection of carbapenem-resistant Enterobacteriales (CRE) isolates from inpatients, which can provide the basis for developing effective prevention. Methods A total of 96 CRE strains were collected from 1,487 fecal samples of hospitalized children between January 2016 and June 2017, which were defined as the "CRE colonization" group. In total, 70 CRE clinical isolates were also randomly selected for the comparison analysis and defined as the "CRE infection" group. The antimicrobial susceptibility of all strains was determined by the microdilution broth method. Polymerase chain reaction (PCR) was used to analyze carbapenemase genes, plasmid typing, and integrons. Multilocus sequence typing was further used to determine clonal relatedness. Results In the "CRE colonization" group, Klebsiella pneumoniae was mostly detected with a rate of 42.7% (41/96), followed by Escherichia coli (34.4%, 33/96) and Enterobacter cloacae (15.6%, 15/96). The ST11 KPC-2 producer, ST8 NDM-5 producer, and ST45 NDM-1 producer were commonly present in carbapenem-resistant K. pneumoniae (CRKPN), carbapenem-resistant E. coli (CRECO), and carbapenem-resistant E. cloacae (CRECL) isolates, respectively. In the "CRE infection" group, 70% (49/70) of strains were K. pneumoniae, with 21.4% E. cloacae (15/70) and 5.7% E. coli (4/70). The ST15 OXA-232 producer and ST48 NDM-5 producer were frequently observed in CRKPN isolates, while the majority of NDM-1-producing CRECL isolates were assigned as ST45. Phylogenetic analysis showed that partial CRE isolates from intestinal colonization and nosocomial infection were closely related, especially for ST11 KPC-2-producing CRKPN and ST45 NDM-1-producing CRECL. Furthermore, plasmid typing demonstrated that IncF and IncFIB were the most prevalent plasmids in KPC-2 producers, while IncX3/IncX2 and ColE were widely spread in NDM producer and OXA-232 producer, respectively. Then, class 1 integron intergrase intI1 was positive in 74.0% (71/96) of the "CRE colonization" group and 52.9% (37/70) of the "CRE infection" group. Conclusion This study revealed that CRE strains from intestinal colonization and nosocomial infection showed a partial correlation in the prevalence of CRE, especially for ST11 KPC-2-producing CRKPN and ST45 NDM-1-producing CRECL. Therefore, before admission, long-term active screening of rectal colonization of CRE isolates should be emphasized.
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Affiliation(s)
- Fen Pan
- Department of Clinical Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Yuxin Duan
- Department of Clinical Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fangyuan Yu
- Department of Clinical Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wenhao Weng
- Department of Clinical Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Zhang
- Department of Clinical Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Errico G, Del Grosso M, Pagnotta M, Marra M, Carollo M, Cerquetti M, Fogato E, Cesana E, Gentiloni Silverj F, Zabzuni D, Rossini A, Pantosti A, Tinelli M, Monaco M, Giufrè M. Whole-Genome Sequencing and Molecular Analysis of Ceftazidime-Avibactam-Resistant KPC-Producing Klebsiella pneumoniae from Intestinal Colonization in Elderly Patients. Antibiotics (Basel) 2023; 12:1282. [PMID: 37627702 PMCID: PMC10451778 DOI: 10.3390/antibiotics12081282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/25/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
Ceftazidime-avibactam (CAZ-AVI) is an active antibiotic combination of a β-lactam-β-lactamase inhibitor against carbapenemase-producing Enterobacterales. Reports of resistance to CAZ-AVI other than metallo-β-lactamases have increased in recent years. The aim of this study was to analyze KPC-Klebsiella pneumoniae (KP) isolates resistant to CAZ-AVI from the intestinal carriage of hospitalized elderly patients in Italy, in February 2018-January 2020. Characterization of CAZ-AVI-resistant KP isolates, including MLST, resistome, virulome and plasmid content, was performed by WGS analysis. Out of six CAZ-AVI-resistant KP isolates, three belonged to ST101 and three to ST512; two isolates produced KPC-3 (both ST512), four had mutated KPC-3 (KPC-31, in ST101 and ST512, and KPC-46, both ST101). All CAZ-AVI-resistant KP isolates were multidrug-resistant and carried several resistance genes. The yersiniabactin ybt9 gene cluster was present in all ST101 isolates, while, in ST512 isolates, no virulence genes were detected. Several plasmids were detected: IncF was present in all isolates, as well as IncR and Col440 in ST101 and IncX3 in ST512 isolates. In conclusion, it is important to monitor the circulation of K. pneumoniae resistant to CAZ-AVI to prevent the spread of clones causing difficult-to-treat infections. The presence of mutated KPC-3 in high-risk K. pneumoniae clones resistant to CAZ-AVI in hospitalized patients deserves attention.
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Affiliation(s)
- Giulia Errico
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Maria Del Grosso
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Michela Pagnotta
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Manuela Marra
- Core Facilities Technical-Scientific Service (FAST), Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Maria Carollo
- Core Facilities Technical-Scientific Service (FAST), Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Marina Cerquetti
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Elena Fogato
- Laboratory of Clinical Microbiology, ASP ‘Golgi-Redaelli’, 20146 Milan, Italy
| | - Elisabetta Cesana
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy
| | | | - Dorjan Zabzuni
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy
| | | | - Annalisa Pantosti
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Marco Tinelli
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy
| | - Monica Monaco
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Maria Giufrè
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
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Arcari G, Polani R, Bruno F, Capitani V, Sacco F, Menichincheri G, Raponi G, Carattoli A. Ceftazidime-avibactam resistance in Klebsiella pneumoniae sequence type 37: a decade of persistence and concealed evolution. Microb Genom 2023; 9:mgen000931. [PMID: 36752778 PMCID: PMC9997735 DOI: 10.1099/mgen.0.000931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
The first reports of carbapenem-resistant Enterobacterales in our hospital date back to 2006. In that period, few ertapenem-resistant but meropenem-susceptible Klebsiella pneumoniae isolates belonging to sequence type (ST) 37 were retrieved from clinical samples. These strains produced the CTX-M-15 extended spectrum β-lactamase, OmpK35 was depleted due to a nonsense mutation, and a novel OmpK36 variant was identified. Yet, starting from 2010, Klebsiella pneumoniae carbapenemase (KPC)-producing ST512 isolates started prevailing and ST37 vanished from sight. Since 2018 the clinical use of the combination of ceftazidime-avibactam (CZA) has been introduced in clinical practice for the treatment of bacteria producing serine-β-lactamases, but KPC-producing, CZA-resistant K. pneumoniae are emerging. In 2021, four CZA-resistant ST37 isolates producing KPC variants were isolated from the same number of patients. blaKPC gene cloning in Escherichia coli was used to define the role of those KPC variants on CZA resistance, and whole genome sequencing was performed on these isolates and on three ST37 historical isolates from 2011. CZA resistance was due to mutations in the blaKPC genes carried on related pKpQIL-type plasmids, and three variants of the KPC enzyme have been identified in the four ST37 strains. The four ST37 isolates were closely related to each other and to the historical isolates, suggesting that ST37 survived without notice in our hospital for 10 years, waiting to re-emerge as a CZA-resistant K. pneumoniae clone. The ancestor of these contemporary isolates derives from ST37 wild-type porin strains, with no other mutations in chromosomal genes involved in conferring antibiotic resistance (parC, gyrA, ramR, mgrB, pmrB).
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Affiliation(s)
- Gabriele Arcari
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Riccardo Polani
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Francesco Bruno
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Valerio Capitani
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Federica Sacco
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Gaia Menichincheri
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Giammarco Raponi
- Department of Public Health, Sapienza University of Rome, Rome, Italy
| | - Alessandra Carattoli
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Italy
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Giufrè M, Errico G, Monaco M, Del Grosso M, Sabbatucci M, Pantosti A, Cerquetti M, Pagnotta M, Marra M, Carollo M, Rossini A, Fogato E, Cesana E, Gentiloni Silverj F, Zabzuni D, Tinelli M. Whole Genome Sequencing and Molecular Analysis of Carbapenemase-Producing Escherichia coli from Intestinal Carriage in Elderly Inpatients. Microorganisms 2022; 10:microorganisms10081561. [PMID: 36013979 PMCID: PMC9413394 DOI: 10.3390/microorganisms10081561] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/25/2022] [Accepted: 07/30/2022] [Indexed: 01/27/2023] Open
Abstract
The spread of carbapenemase-producing (CP) Enterobacterales is currently a worldwide concern, especially in the elderly. Twelve CP-E. coli isolated from rectal swabs of colonized inpatients aged ≥65 years from four hospitals in two Italian cities (Milan and Rome) were analyzed by whole genome sequencing (WGS) to obtain multi-locus sequence typing (MLST), identification of carbapenemase-encoding genes, resistome, plasmid content, and virulence genes. MLST analysis showed the presence of 10 unrelated lineages: ST410 (three isolates from three different hospitals in two cities) and ST12, ST38, ST69, ST95, ST131, ST189, ST648, ST1288, and ST1598 (one isolate each). Most isolates (9/12, 75%) contained a serine-β-lactamase gene (5 blaKPC-3, 2 blaKPC-2, and 2 blaOXA-181), while three isolates harbored a metallo-β-lactamase gene (two blaNDM-5 and one blaVIM-1). In most CP-E. coli, the presence of more than one plasmid was observed, with the predominance of IncF. Several virulence genes were detected. All isolates contained genes enhancing the bacterial fitness, such as gad and terC, and all isolates but one, fimH, encoding type 1 fimbriae. In conclusion, CP-E. coli clones colonizing elderly patients showed heterogeneous genetic backgrounds. We recommend strict surveillance to monitor and prevent the spread of successful, high-risk clones in healthcare settings.
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Affiliation(s)
- Maria Giufrè
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
- Correspondence:
| | - Giulia Errico
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Monica Monaco
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Maria Del Grosso
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Michela Sabbatucci
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
- Ministry of Health, Directorate General Health Prevention, Communicable Diseases and International Prophylaxis, 00144 Rome, Italy
| | - Annalisa Pantosti
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Marina Cerquetti
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Michela Pagnotta
- Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy; (G.E.); (M.M.); (M.D.G.); (M.S.); (A.P.); (M.C.); (M.P.)
| | - Manuela Marra
- Core Facilities Technical-Scientific Service (FAST), Istituto Superiore di Sanità, 00161 Rome, Italy; (M.M.); (M.C.)
| | - Maria Carollo
- Core Facilities Technical-Scientific Service (FAST), Istituto Superiore di Sanità, 00161 Rome, Italy; (M.M.); (M.C.)
| | | | - Elena Fogato
- Golgi-Redaelli Geriatric Institute, 20146 Milan, Italy;
| | - Elisabetta Cesana
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy; (E.C.); (D.Z.); (M.T.)
| | | | - Dorjan Zabzuni
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy; (E.C.); (D.Z.); (M.T.)
| | - Marco Tinelli
- IRCCS Istituto Auxologico Italiano, San Luca Hospital, 20149 Milan, Italy; (E.C.); (D.Z.); (M.T.)
- Italian Society of Infectious and Tropical Diseases (SIMIT), 59100 Prato, Italy
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