<i>Corynebacterium freneyi</i>
            Bacteremia

Auzias, Amélie; Bollet, C.; Ayari, R.; Drancourt, Michel; Raoult, Didier

doi:10.1128/jcm.41.6.2777-2778.2003

Cited by 16 publications

(8 citation statements)

References 11 publications

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“…The situation became more confused with the description of Corynebacterium freneyi by Renaud et al (2001) as, based on phylogenetic analyses, this species was considered to be closely related to C. xerosis and Corynebacterium amycolatum. Among the biochemical characteristics that differentiate these three species, a-glucosidase is known to be positive for C. xerosis ATCC 373 T and the reference strain ATCC 7711 (but not strain K132, isolated by Wauters et al, 1998), negative for C. amycolatum, with some exceptions, and positive for C. freneyi (Renaud et al, 2001;Auzias et al, 2003). In this report, a novel species isolated from a human source that is a-glucosidase-negative is described.…”

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confidence: 85%

“…Carbon substrate assimilation tests were determined with the API 50CH system (bioMérieux) (Renaud et al, 1998). Using the protocol described previously by Auzias et al (2003), the partial sequence (952 bp) of the 16S rRNA gene was aligned and compared with all eubacterial 16S rRNA gene sequences available in the GenBank and EMBL databases. The partial rpoB gene sequence was amplified with primers C2700F and C3130R according to Khamis et al (2004Khamis et al ( , 2005, except that the hybridization temperature was 51 uC instead of 57 uC.…”

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confidence: 99%

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Corynebacterium hansenii sp. nov., an α-glucosidase-negative bacterium related to Corynebacterium xerosis

Renaud

Coustumier

Wilhem

et al. 2007

International Journal of Systematic and Evolutionary Microbiology

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, belonging to the genus Corynebacterium was isolated from a severe thigh liposarcoma infection and its differentiation from Corynebacterium xerosis and Corynebacterium freneyi is described. Analysis of 16S rRNA gene sequences, rpoB sequences and the PCR profile of the 16S-23S spacer regions was not conclusive enough to differentiate strain C-138 T from C. xerosis and C. freneyi. However, according to DNA-DNA hybridization data, strain C-138 T constitutes a member of a distinct novel species. It can be differentiated from strains of C. xerosis and C. freneyi by colony morphology, the absence of a-glucosidase and some biochemical characteristics such as glucose fermentation at 42 6C and carbon assimilation substrates. The name Corynebacterium hansenii sp. nov. is proposed for this novel species; the type strain is C-138 T (=CIP 108444 T =CCUG 53252 T ).

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confidence: 85%

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confidence: 99%

Corynebacterium hansenii sp. nov., an α-glucosidase-negative bacterium related to Corynebacterium xerosis

Renaud

Coustumier

Wilhem

et al. 2007

International Journal of Systematic and Evolutionary Microbiology

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“…This taxon was characterized by Renaud et al in 2001 based on data from three strains (13). Up to now, only one additional C. freneyi strain has appeared in the relevant literature (2). C. freneyi is a fermentative, ␣-glucosidase-positive Corynebacterium species closely related to C. xerosis (13).…”

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Comprehensive Study of Corynebacterium freneyi Strains and Extended and Emended Description of Corynebacterium freneyi Renaud, Aubel, Riegel, Meugnier, and Bollet 2001

Funke

Frodl

2008

J Clin Microbiol

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In 2001, Corynebacterium freneyi was described as a new fermentative, ␣-glucosidase-positive Corynebacterium species related to C. xerosis based on data from three strains. During a review of our extensive culture collection we encountered 18 additional C. freneyi strains and further characterized them in detail. Thirteen of the 18 strains were isolated from female genital tract specimens without any obvious disease association. Phenotypically, C. freneyi can be easily differentiated from C. xerosis by its distinct wrinkled colonies whereas nearly all other routinely applied phenotypic tests do not allow a unanimous separation of C. freneyi from C. xerosis. Restriction length polymorphism analysis using CfoI of the 16S-23S rRNA gene intragenic spacer definitively allows differentiation between the two species. Surprisingly, comparative 16S rRNA gene analysis does not discriminate between C. freneyi and C. xerosis because the designated type strain of C. freneyi is not the most representative strain for this species. The present report also includes detailed data on the antimicrobial susceptibility pattern of C. freneyi presented here for the first time. Based on the large number of additional C. freneyi strains from our culture collection, we provide an extended and emended species description of C. freneyi.

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“…Moreover, we describe the first Table 1). Previously, C. freneyi had only been isolated from human clinical samples (3,7,19). Macroscopically, C. xerosis gave dry, rough, and yellowish pigmented colonies that are considered typical for this microorganism (7); however, colonies of C. xerosis also had a wrinkled surface (100% of the strains; Table 1) and were whitish-grayish (50% of the strains; Table 1).…”

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Characterization of Some Bacterial Strains Isolated from Animal Clinical Materials and Identified as Corynebacterium xerosis by Molecular Biological Techniques

Palacios¹,

Vela

Molin

et al. 2010

J Clin Microbiol

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Eighteen Corynebacterium xerosis strains isolated from different animal clinical specimens were subjected to phenotypic and molecular genetic studies. On the basis of the results of the biochemical characterization, the strains were tentatively identified as C. xerosis. Phylogenetic analysis based on comparative analysis of the sequences of 16S rRNA and rpoB genes revealed that the 18 strains were highly related to C. xerosis, C. amycolatum, C. freneyi, and C. hansenii. There was a good concordance between 16S rRNA and partial rpoB gene sequencing results, although partial rpoB gene sequencing allowed better differentiation of C. xerosis. Alternatively, C. xerosis was also differentiated from C. freneyi and C. amycolatum by restriction fragment length polymorphism analysis of the 16S-23S rRNA gene intergenic spacer region. Phenotypic characterization indicated that besides acid production from D-turanose and 5-ketogluconate, 90% of the strains were able to reduce nitrate. The absence of the fatty acids C 14:0 , C 15:0 , C 16:1 7c, and C 17:1 8c can also facilitate the differentiation of C. xerosis from closely related species. The results of the present investigation demonstrated that for reliable identification of C. xerosis strains from clinical samples, a combination of phenotypic and molecular-biology-based identification techniques is necessary.

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Corynebacterium freneyi Bacteremia

Abstract: Corynebacterium freneyi is a recently described alpha-glucosidase-positive species of the genus Corynebacterium. To our knowledge, there is no description of human infection due to this species. We report on a case of bacteremia due to C. freneyi following vascular surgery.

Cited by 16 publications

References 11 publications

Corynebacterium hansenii sp. nov., an α-glucosidase-negative bacterium related to Corynebacterium xerosis

Corynebacterium hansenii sp. nov., an α-glucosidase-negative bacterium related to Corynebacterium xerosis

Comprehensive Study of Corynebacterium freneyi Strains and Extended and Emended Description of Corynebacterium freneyi Renaud, Aubel, Riegel, Meugnier, and Bollet 2001

Characterization of Some Bacterial Strains Isolated from Animal Clinical Materials and Identified as Corynebacterium xerosis by Molecular Biological Techniques

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