The Phantom Menace for Patients with Hepatobiliary Diseases: Shewanella haliotis, Often Misidentified as Shewanella algae in Biochemical Tests and MALDI-TOF Analysis

被引:19
作者
Byun, Jung-Hyun [1 ]
Park, Hyunwoong [1 ]
Kim, Sunjoo [1 ]
机构
[1] Gyeongsang Natl Univ, Sch Med, Dept Lab Med, Jinju, South Korea
关键词
PUTREFACIENS; BACTEREMIA; INFECTION;
D O I
10.7883/yoken.JJID.2015.658
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
Although Shewanella algae has been known to have weak pathogenicity, case reports on infections with this species have been steadily increasing. S. algae and S. haliotis are difficult to distinguish from each other with conventional phenotypic methods. We reviewed the microbiological and clinical features of S. algae and S. haliotis infections at our institute. Bacterial culture and identification reports from patient samples from 2010 to 2014 were reviewed to screen the cases of Shewanella infections. In addition to conventional biochemical tests, 16S rRNA gene sequence analysis and matrix assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry were performed for 19 stored bacterial isolates. Medical records were reviewed for clinical characteristics and laboratory findings. All isolates were identified as S. algae by using VITEK 2. MALDI-TOF also identified all isolates as S. algae with a 99.9 confidence value. In contrast, 16S rRNA analysis identified 10 isolates as S. algae and 9 isolates as S. haliotis. Both S. algae (60%) and S. haliotis (77%) infections were strongly associated with diseases of the hepatobiliary tract and pancreas. To distinguish between S. algae and S. haliotis, 16S rRNA gene sequence analysis seems more accurate than biochemical tests or MALDI-TOF. Patients with underlying diseases in the hepatobiliary tract and pancreas seem to be susceptible to these marine pathogens.
引用
收藏
页码:177 / 180
页数:4
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