Bacteremia caused by a novel isolate resembling leptotrichia species in a neutropenic patient - PubMed (original) (raw)

Case Reports

Bacteremia caused by a novel isolate resembling leptotrichia species in a neutropenic patient

J B Patel et al. J Clin Microbiol. 1999 Jun.

Abstract

We report a case of Leptotrichia species bacteremia in a patient undergoing treatment for acute myelogenous leukemia. Like previously reported Leptotrichia species, this is a gram-variable, pleomorphic rod that is catalase negative and utilizes glucose and sucrose. However, it is more fastidious than previously reported isolates of Leptotrichia and may represent a novel species.

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Figures

FIG. 1

Electron micrograph of the novel isolate. (A) Magnification of a single cell demonstrating the cell wall structure; (B) lower magnification of several pleomorphic cells.

FIG. 2

Dendrogram depicting the degree of difference between 16S rRNA gene sequences. The dendrogram was generated by the neighbor-joining pair group method (12). The sequences of L. buccalis and “_L. sanguinegens_” are from GenBank (accession no. L37788 and L37789, respectively) (5). The sequences of the Fusobacterium spp. are part of the MicroSeq database. These are genomic sequences of the American Type Culture Collection type strain for each species (ATCC 25563, ATCC 25286, ATCC 2557, and ATCC 8501).

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