Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces, Actinomyces turicensis Wust, Stubbs, Weiss, Funke and Collins 1995, emend. Vandamme,
Falsen, Vancanneyt, Esbroeck, Van de Merwe, Bergmans, Schouls and Sabbe, 1998.
Historical synonyms: CDC coryneform group E, Actinomyces pyogenes-like, Actinomyces meyeri-like, Arcanobacterium
haemolyticum-like, G. vaginalis-like, C. cervicis.
Gram-positive straight and slightly curved rods with some pseudobranching; 1.3-4.0
x 0.6 µm. Non-spore-forming. Non-motile.
Colonies are convex, opaque, grey, small, with a glistening surface and butyrous
consistency after 48 h of incubation, 5% CO2, on sheep blood agar. Grows slightly
better in CO2 enrichment or anaerobiosis. Alpha-hemolysis is produced. Facultative
anaerobic. Grows at 37 ºC. Slow growrth at 30 ºC. Variable growth at 43 ºC. No growth
at 25 ºC. CAMP test is positive.
Isolated from various infections in humans .
Susceptible to penicillin, oxacillin, erythromycin, cefazolin, amoxicillin/clavulanic acid , cotrimoxazol, phosphomycin and doxycycline.
Isolated from human bacterial vaginosis, subhepatic abscess, pilonidal cyst, chronic otitis media, perineal abscess, cystitis, vulvar
abscess, genital wound, blood, leg wound, retroperitoneal abscess. Do not seem to cause typical actinomycosis.
- Vandamme P., Falsen E., Vancanneyt M., Van Esbroeck M., Van de Merwe D., Bergmans A., Schouls L. and Sabbe L., 1998.
Characterisation of Actinomyces turicensis and Actinomyces radingae. Int. J. Syst. Bacteriol. Vol. 48, 503-510.
- Funke G., von Graevenitz A., Clarridge III J.E., and Bernard K.A., 1997. Clinical Microbiology of Coryneform Bacteria. Clinical
Microbiology Rewiews Vol. 10, No. 1, p. 125-159.
Description is based mostly on API CORYNE results.
Positive results for leucine arylamidase, acid production from: ribose, starch, sacharose, trehalose + (with 5% horse serum in API
gallery macrotubes) & xylose.
Negative results for alkaline phosphatase, catalase, esculin hydrolysis, gelatin hydrolysis, alpha- and beta-galactosidase, alpha- and
beta-glucosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, indole production, nitrate reduction, pyrazinamidase,
pyrrolidonyl arylamidase, urease, acid production from: glycogen, lactose, salicin & mannitol.
(c) Costin Stoica