Identification of Turicella otitidis isolated from a patient with otorrhea associated with surgery: differentiation from Corynebacterium afermentans and Corynebacterium auris

Renaud, François; Grégory, A; Barreau, Claude; Aubel, Dominique; Freney, J.

doi:10.1128/jcm.34.10.2625-2627.1996

Cited by 25 publications

(14 citation statements)

References 12 publications

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“…We named this species C. auris. Our results were confirmed and amplified by Renaud et al [15] from an isolate in a case of otitis with otorrhea.…”

Section: The New Speciessupporting

confidence: 90%

“…Microscopically, the two corynebacteria are typical diphtheroids while T. otitidis is reported to show diphtheroidal as well as straight Gram-positive rods [11,15]. Colonial morphology differences between the three (flat and grayish-white in C. afermentans, convex and pale yellow in the other two, but adherent in C. auris) may be hard to discern.…”

Section: Laboratory Diagnosismentioning

confidence: 99%

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Turicella otitidis and Corynebacterium auris: 20 years on

Graevenitz¹,

Funke

2013

Infection

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Turicella otitidis and Corynebacterium auris, described as new species 20 years ago, have been isolated mainly from the external ear canal and middle ear fluid. While their taxonomic position has been clearly established, their diagnosis in the routine laboratory is difficult. The question of their pathogenic potential in otitis is still open but might be elucidated better if corynebacteria are speciated more often.

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“…We named this species C. auris. Our results were confirmed and amplified by Renaud et al [15] from an isolate in a case of otitis with otorrhea.…”

Section: The New Speciessupporting

confidence: 90%

Section: Laboratory Diagnosismentioning

confidence: 99%

Turicella otitidis and Corynebacterium auris: 20 years on

Graevenitz¹,

Funke

2013

Infection

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“…Turicella otitidis has been most commonly associated with patients having otitis media, 8,13 but it has also been isolated from healthy patients. 12 Most likely, considering the frequency with which it was found in the present study, it is normal flora in the external canal and cerumen.…”

Section: Discussionmentioning

confidence: 99%

Microbiology of Normal External Auditory Canal

Stroman¹,

Roland²,

Dohar³

et al. 2001

The Laryngoscope

135

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“…Acid production might also be delayed in many other strains of lipophilic corynebacteria. In addition, we would like to stress the importance of basic microbiological tests (e.g., colony morphology, consistency of colonies, and Gram stain of cells) for the differentiation of coryneform bacteria (e.g., differentiation of the previous CDC coryneform group ANF bac-teria) (6,9). Unfortunately, the latter simple differentiation criteria were not explicitly mentioned in database 2.0 for the identification of bacteria with numerical code 2100004 (i.e., Corynebacterium afermentans, Corynebacterium auris, and Turicella otitidis).…”

Section: Discussionmentioning

confidence: 99%

Multicenter evaluation of the updated and extended API (RAPID) Coryne database 2.0

et al. 1997

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In a multicenter study, 407 strains of coryneform bacteria were tested with the updated and extended API (RAPID) Coryne system with database 2.0 (bioMérieux, La-Balme-les-Grottes, France) in order to evaluate the system's capability of identifying these bacteria. The design of the system was exactly the same as for the previous API (RAPID) Coryne strip with database 1.0, i.e., the 20 biochemical reactions covered were identical, but database 2.0 included both more taxa and additional differential tests. Three hundred ninety strains tested belonged to the 49 taxa covered by database 2.0, and 17 strains belonged to taxa not covered. Overall, the system correctly identified 90.5% of the strains belonging to taxa included, with additional tests needed for correct identification for 55.1% of all strains tested. Only 5.6% of all strains were not identified, and 3.8% were misidentified. Identification problems were observed in particular for Corynebacterium coyleae, Propionibacterium acnes, and Aureobacterium spp. The numerical profiles and corresponding identification results for the taxa not covered by the new database 2.0 were also given. In comparison to the results from published previous evaluations of the API (RAPID) Coryne database 1.0, more additional tests had to be performed with version 2.0 in order to completely identify the strains. This was the result of current changes in taxonomy and to provide for organisms described since the appearance of version 1.0. We conclude that the new API (RAPID) Coryne system 2.0 is a useful tool for identifying the diverse group of coryneform bacteria encountered in the routine clinical laboratory.

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Identification of Turicella otitidis isolated from a patient with otorrhea associated with surgery: differentiation from Corynebacterium afermentans and Corynebacterium auris

Cited by 25 publications

References 12 publications

Turicella otitidis and Corynebacterium auris: 20 years on

Turicella otitidis and Corynebacterium auris: 20 years on

Microbiology of Normal External Auditory Canal

Multicenter evaluation of the updated and extended API (RAPID) Coryne database 2.0

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