Acinetobacter species isolates from a range of environments: species survey and observations of antimicrobial resistance

Abstract Acinetobacter species isolates from a range of environments, including soil, were investigated. We determined 16S rRNA and rpoB gene sequences for species identification and performed tests of antimicrobial resistance susceptibility. Twenty-nine of the isolates (8 from soil and 21 from life...

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Bibliographic Details
Published in:Diagnostic microbiology and infectious disease 2012-10, Vol.74 (2), p.177-180
Main Authors: Choi, Ji-Young, Kim, Yejin, Ko, Eun Ah, Park, Young Kyoung, Jheong, Weon-Hwa, Ko, GwangPyo, Ko, Kwan Soo
Format: Article
Language:English
Subjects:
Acinetobacter - classification
Acinetobacter - drug effects
Acinetobacter - genetics
Acinetobacter - isolation & purification
Acinetobacter baumannii
Anti-Bacterial Agents - pharmacology
Bacteriology
Biological and medical sciences
Colistin
DNA, Bacterial - chemistry
DNA, Bacterial - genetics
DNA, Ribosomal - chemistry
DNA, Ribosomal - genetics
DNA-Directed RNA Polymerases - genetics
Drug Resistance, Bacterial
Environmental Microbiology
Fundamental and applied biological sciences. Psychology
Humans
Imipenem
Infectious Disease
Infectious diseases
Internal Medicine
Medical sciences
Microbial Sensitivity Tests
Microbiology
Miscellaneous
Molecular Typing
RNA, Ribosomal, 16S - genetics
Sequence Analysis, DNA
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Summary:Abstract Acinetobacter species isolates from a range of environments, including soil, were investigated. We determined 16S rRNA and rpoB gene sequences for species identification and performed tests of antimicrobial resistance susceptibility. Twenty-nine of the isolates (8 from soil and 21 from life environment) belonged to the genus Acinetobacter . Fourteen Acinetobacter species were identified among 29 isolates: 4 A. baumannii , 3 A. calcoaceticus , 1 A. nosocomialis , 2 A. pittii , and 2 Acinetobacter gen. sp. ‘close to 13TU’ as A. calcoaceticus – baumannii complex. Three Acinetobacter species isolates were identified as novel species candidates. Three Acinetobacter species isolates were resistant to imipenem: 1 A. parvus and 2 novel species candidates of Acinetobacter . Eight isolates showed resistance to colistin: all Acinetobacter gen. sp. ‘close to 13TU’ (2 isolates) and A. parvus isolates (3 isolates) were resistant to colistin. Although the genotypes of A. baumannii isolates from various natural environments were different from those of clinical isolates, the presence of clinically important and antimicrobial resistant Acinetobacter species in the natural environment may represent a threat to public health.
ISSN:0732-8893
1879-0070
DOI:10.1016/j.diagmicrobio.2012.06.023