Bloodstream infection caused by Bacteroides denticanum, a close relative of Bacteroides pyogenes, misidentified by MALDI TOF- mass spectrometry

Jan Tkadlec; Marcela Krutova; Jana Matejkova; Otakar Nyc; Pavel Drevinek

doi:10.1016/j.anaerobe.2018.06.010

Bloodstream infection caused by Bacteroides denticanum, a close relative of Bacteroides pyogenes, misidentified by MALDI TOF- mass spectrometry

Anaerobe. 2018 Dec:54:23-25. doi: 10.1016/j.anaerobe.2018.06.010. Epub 2018 Jul 11.

Authors

Jan Tkadlec¹, Marcela Krutova², Jana Matejkova¹, Otakar Nyc¹, Pavel Drevinek¹

Affiliations

¹ Department of Medical Microbiology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
² Department of Medical Microbiology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic. Electronic address: marcela.krutova@lfmotol.cuni.cz.

PMID: 30006318
DOI: 10.1016/j.anaerobe.2018.06.010

Abstract

Bacteroides pyogenes can cause infections in humans. We describe a case of bloodstream infection caused by Bacteroides denticanum that probably originated from a dog bite. MALDI-TOF MS misidentified this new species as B. pyogenes. Subsequent analysis using the 16S rRNA sequencing approach identified the species as B. denticanum.

Keywords: 16S rRNA; Anaerobes; Bloodstream infection; MALDI TOF MS.

Publication types

Case Reports

MeSH terms

Aged
Animals
Bacteremia / diagnosis
Bacteremia / microbiology*
Bacterial Typing Techniques
Bacteroides / chemistry
Bacteroides / classification
Bacteroides / genetics
Bacteroides / isolation & purification*
Bacteroides Infections / diagnosis
Bacteroides Infections / microbiology*
Dogs
Female
Humans
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization