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Prevotella amnii sp nov., isolated from human amniotic fluid

Artikel i vetenskaplig tidskrift
Författare Paul A. Lawson
Edward R.B. Moore
Enevold Falsen
Publicerad i International Journal of Systematic and Evolutionary Microbiology
Volym 58
Sidor 89-92
ISSN 1466-5026
Publiceringsår 2008
Publicerad vid Institutionen för biomedicin, avdelningen för infektionssjukdomar
Sidor 89-92
Språk en
Länkar dx.doi.org/10.1099/ijs.0.65118-0
Ämnesord human subgingival plaque, antimicrobial agents, bacterial vaginosis
Ämneskategorier Mikrobiologi

Sammanfattning

Two Gram-negative, anaerobic, non-spore-forming, rod-shaped organisms were isolated from human amniotic fluid. Based on morphological and biochemical criteria, the strains were tentatively identified as Bacteroidaceae but they did not appear to correspond to any recognized species of this family. Comparative 16S rRNA gene sequencing studies showed the strains were highly related to each other and confirmed their placement in the genus Prevotella, but sequence divergence values of >4 % with reference Prevotella species demonstrated that the organisms from human clinical sources represent a novel species. Phylogenetic analysis revealed the novel organism to be most closely related to Prevotella bivia, an organism frequently associated with pelvic inflammatory diseases. The major long-chain cellular fatty acids of the novel species consist of iso-C14 : 0, anteiso-C15 : 0, iso-C15 : 0, C16 : 0, iso-C16 : 0 and iso-3-OH-C17 : 0. Based on biochemical criteria and phylogenetic considerations, it is proposed that the unknown isolates from human amniotic fluid be assigned to a new species of the genus Prevotella, as Prevotella amnii sp. nov. The type strain of Prevotella amnii is CCUG 53648T (=JCM 14753T).

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