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Passive Filtration, Rapid Scanning Electron Microscopy, and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry for Culture and Identification from the Oral Cavity

Overview
Specialty Microbiology
Date 2019 Jul 26
PMID 31340994
Citations 10
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Abstract

We present here a new passive-filtration-based culture device combined with rapid identification with a new electron microscope (Hitachi TM4000) for the detection and culture of species from the human oral cavity. Of the 44 oral samples cultivated, 15 (34%) were found to be positive for using electron microscopy and were also culture positive. All were subcultured on agar plates; based on genome sequencing and analyses, 10 were strains of and 5 were strains of The 29 samples that were negative for remained culture negative. In addition, 14 species ordered from the DSMZ collection were cultured in the T-Raoult culture medium optimized here. Finally, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) was used and 30 novel spectra were added to the MALDI-TOF MS database. We have successfully developed a new and effective method for treponemal detection, culture, and identification.

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