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  • Title: Prevotella massiliensis sp. nov. isolated from human blood.
    Author: Berger P, Adékambi T, Mallet MN, Drancourt M.
    Journal: Res Microbiol; 2005 Dec; 156(10):967-73. PubMed ID: 16085394.
    Abstract:
    We report a bacterial isolate (Marseille isolate) recovered from the blood of a patient hospitalized in an intensive care unit, presenting with severe trauma, fever and mechanical ventilation. Colonies appeared at 37 degrees C on blood agar after 72 h incubation. This isolate was a strictly anaerobic, Gram-negative rod phenotypically related to other Prevotella species described to date: non-motile, catalase-negative, oxidase-positive, non-glucose fermenting, resistant to vancomycin and susceptible to kanamycin. Cells exhibited a trilamellar membrane under electron microscopy. The fatty acid methyl ester profile was marginally related to that of Clostridium botulinum group A (distance: 26.27%) and Bifidobacterium bifidum GC subgroup B (distance: 26.38%). 16S rRNA gene sequence similarity was 90.0% with that of Prevotella oris and 89.1% with that of Prevotella melaninogenica. Partial rpoB gene sequence similarity was 84.5 and 86.4% with P. oris and P. melaninogenica, respectively. According to current standards, phenotypic traits, 16S rRNA and rpoB gene sequence analyses indicated that the Marseille isolate belonged to a previously unrecognized species of the genus Prevotella, and we propose classifying it in the new taxon "Prevotella massiliensis" sp. nov.
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