WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia
Carbapenem-resistant <i>Acinetobacter baumannii</i> (<i>A. baumannii</i>, CRAb) is an emerging global threat for healthcare systems, particularly in Southeast Asia. Next-generation sequencing (NGS) technology was employed to map genes associated with antimicrobial resistance...
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doaj-97bb8f3237ef4409aeb7d3de358c3baf2021-05-31T23:43:55ZengMDPI AGAntibiotics2079-63822021-05-011056356310.3390/antibiotics10050563WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast AsiaGamal Wareth0Jörg Linde1Ngoc H. Nguyen2Tuan N. M. Nguyen3Lisa D. Sprague4Mathias W. Pletz5Heinrich Neubauer6Friedrich-Loeffler-Institute, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger str.96a, D-07743 Jena, GermanyFriedrich-Loeffler-Institute, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger str.96a, D-07743 Jena, GermanyPhutho Department of Healthcare, Phutho 35124, VietnamPhutho General Hospital, Phutho 35125, VietnamFriedrich-Loeffler-Institute, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger str.96a, D-07743 Jena, GermanyInstitute for Infectious Diseases and Infection Control, Jena University Hospital, Am Klinikum 1, D-07747 Jena, GermanyFriedrich-Loeffler-Institute, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger str.96a, D-07743 Jena, GermanyCarbapenem-resistant <i>Acinetobacter baumannii</i> (<i>A. baumannii</i>, CRAb) is an emerging global threat for healthcare systems, particularly in Southeast Asia. Next-generation sequencing (NGS) technology was employed to map genes associated with antimicrobial resistance (AMR) and to identify multilocus sequence types (MLST). Eleven strains isolated from humans in Vietnam were sequenced, and their AMR genes and MLST were compared to published genomes of strains originating from Southeast Asia, i.e., Thailand (<i>n</i> = 49), Myanmar (<i>n</i> = 38), Malaysia (<i>n</i> = 11), Singapore (<i>n</i> = 4) and Taiwan (<i>n</i> = 1). Ten out of eleven Vietnamese strains were CRAb and were susceptible only to colistin. All strains harbored <i>ant</i>(3”)-IIa, <i>arm</i>A, <i>aph</i>(6)-Id and <i>aph</i>(3”) genes conferring resistance to aminoglycosides, and <i>bla</i>OXA-51 variants and <i>bla</i>ADC-25 conferring resistance to ß-lactams. More than half of the strains harbored genes that confer resistance to tetracyclines, sulfonamides and macrolides. The strains showed high diversity, where six were assigned to sequence type (ST)/2, and two were allocated to two new STs (ST/1411-1412). MLST analyses of 108 strains from Southeast Asia identified 19 sequence types (ST), and ST/2 was the most prevalent found in 62 strains. A broad range of AMR genes was identified mediating resistance to ß-lactams, including cephalosporins and carbapenems (e.g., <i>bla</i>OXA-51-like, <i>bla</i>OXA-23, <i>bla</i>ADC-25, <i>bla</i>ADC-73, <i>bla</i>TEM-1, <i>bla</i>NDM-1), aminoglycosides (e.g., <i>ant</i>(3”)-IIa, <i>aph</i>(3”)-Ib, <i>aph</i>(6)-Id, <i>arm</i>A and <i>aph</i>(3’)-Ia), phenicoles (e.g., <i>cat</i>B8), tetracyclines (e.g., <i>tet.</i>B and <i>tet</i>.39), sulfonamides (e.g., <i>sul</i>.1 and sul.2), macrolides and lincosamide (e.g., <i>mph</i>.E, <i>msr</i>.E and <i>aba</i>F). MLST and core genome MLST (cgMLST) showed an extreme diversity among the strains. Several strains isolated from different countries clustered together by cgMLST; however, different clusters shared the same ST. Developing an action plan on AMR, increasing awareness and prohibiting the selling of antibiotics without prescription must be mandatory for this region. Such efforts are critical for enforcing targeted policies on the rational use of carbapenem compounds and controlling AMR dissemination and emergence in general.https://www.mdpi.com/2079-6382/10/5/563<i>Acinetobacter baumannii</i>carbapenem-resistantMDRWGSVietnamSoutheast Asia |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gamal Wareth Jörg Linde Ngoc H. Nguyen Tuan N. M. Nguyen Lisa D. Sprague Mathias W. Pletz Heinrich Neubauer |
spellingShingle |
Gamal Wareth Jörg Linde Ngoc H. Nguyen Tuan N. M. Nguyen Lisa D. Sprague Mathias W. Pletz Heinrich Neubauer WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia Antibiotics <i>Acinetobacter baumannii</i> carbapenem-resistant MDR WGS Vietnam Southeast Asia |
author_facet |
Gamal Wareth Jörg Linde Ngoc H. Nguyen Tuan N. M. Nguyen Lisa D. Sprague Mathias W. Pletz Heinrich Neubauer |
author_sort |
Gamal Wareth |
title |
WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia |
title_short |
WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia |
title_full |
WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia |
title_fullStr |
WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia |
title_full_unstemmed |
WGS-Based Analysis of Carbapenem-Resistant <i>Acinetobacter baumannii</i> in Vietnam and Molecular Characterization of Antimicrobial Determinants and MLST in Southeast Asia |
title_sort |
wgs-based analysis of carbapenem-resistant <i>acinetobacter baumannii</i> in vietnam and molecular characterization of antimicrobial determinants and mlst in southeast asia |
publisher |
MDPI AG |
series |
Antibiotics |
issn |
2079-6382 |
publishDate |
2021-05-01 |
description |
Carbapenem-resistant <i>Acinetobacter baumannii</i> (<i>A. baumannii</i>, CRAb) is an emerging global threat for healthcare systems, particularly in Southeast Asia. Next-generation sequencing (NGS) technology was employed to map genes associated with antimicrobial resistance (AMR) and to identify multilocus sequence types (MLST). Eleven strains isolated from humans in Vietnam were sequenced, and their AMR genes and MLST were compared to published genomes of strains originating from Southeast Asia, i.e., Thailand (<i>n</i> = 49), Myanmar (<i>n</i> = 38), Malaysia (<i>n</i> = 11), Singapore (<i>n</i> = 4) and Taiwan (<i>n</i> = 1). Ten out of eleven Vietnamese strains were CRAb and were susceptible only to colistin. All strains harbored <i>ant</i>(3”)-IIa, <i>arm</i>A, <i>aph</i>(6)-Id and <i>aph</i>(3”) genes conferring resistance to aminoglycosides, and <i>bla</i>OXA-51 variants and <i>bla</i>ADC-25 conferring resistance to ß-lactams. More than half of the strains harbored genes that confer resistance to tetracyclines, sulfonamides and macrolides. The strains showed high diversity, where six were assigned to sequence type (ST)/2, and two were allocated to two new STs (ST/1411-1412). MLST analyses of 108 strains from Southeast Asia identified 19 sequence types (ST), and ST/2 was the most prevalent found in 62 strains. A broad range of AMR genes was identified mediating resistance to ß-lactams, including cephalosporins and carbapenems (e.g., <i>bla</i>OXA-51-like, <i>bla</i>OXA-23, <i>bla</i>ADC-25, <i>bla</i>ADC-73, <i>bla</i>TEM-1, <i>bla</i>NDM-1), aminoglycosides (e.g., <i>ant</i>(3”)-IIa, <i>aph</i>(3”)-Ib, <i>aph</i>(6)-Id, <i>arm</i>A and <i>aph</i>(3’)-Ia), phenicoles (e.g., <i>cat</i>B8), tetracyclines (e.g., <i>tet.</i>B and <i>tet</i>.39), sulfonamides (e.g., <i>sul</i>.1 and sul.2), macrolides and lincosamide (e.g., <i>mph</i>.E, <i>msr</i>.E and <i>aba</i>F). MLST and core genome MLST (cgMLST) showed an extreme diversity among the strains. Several strains isolated from different countries clustered together by cgMLST; however, different clusters shared the same ST. Developing an action plan on AMR, increasing awareness and prohibiting the selling of antibiotics without prescription must be mandatory for this region. Such efforts are critical for enforcing targeted policies on the rational use of carbapenem compounds and controlling AMR dissemination and emergence in general. |
topic |
<i>Acinetobacter baumannii</i> carbapenem-resistant MDR WGS Vietnam Southeast Asia |
url |
https://www.mdpi.com/2079-6382/10/5/563 |
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