Journal of Microbiology and Biotechnology
The Korean Society for Microbiology and Biotechnology publishes the Journal of Microbiology and Biotechnology.

2016 ; Vol.26-1: 171~179

AuthorIn Young Na, Eun Seon Chung, Chang-Yun Jung, Dae Hun Kim, Juyoun Shin, KyeongJin Kang, Seong-Tae Kim, Kwan Soo Ko
Place of dutyDepartment of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
TitleComparison of the Virulence-Associated Phenotypes of Five Species of Acinetobacter baumannii Complex
PublicationInfo J. Microbiol. Biotechnol.2016 ; Vol.26-1
AbstractIn this study, we compared the virulence-associated factors of Acinetobacter baumannii complex species. Sixty-three isolates of five A. baumannii complex species, including 19 A. baumannii, 15 A. nosocomialis, 13 A. seifertii, 13 A. pittii, and 3 A. calcoaceticus isolates, were included in this study. For all isolates, biofilm formation, A549 cell adherence, resistance to normal human serum, and motility were evaluated. A. baumannii complex isolates showed diversity in biofilm formation, A549 cell adherence, and serum resistance, and no strong positive relationships among these virulence characteristics. However, A. seifertii showed relatively consistent virulence-associated phenotypes. In addition, A. baumannii clone ST110 exhibited consistently high virulence-associated phenotypes. Motility was observed in seven isolates, and all four A. baumannii ST110 isolates showed twitching motility. Although some inconsistencies in virulence-associated phenotypes were seen, high virulence characteristics were observed in A. seifertii, which has been mainly reported in Korea and shows high rates of colistin resistance.
Full-Text
Key_wordAcinetobacter seifertii, twitching, serum resistance, A549 adherence
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