Actinomyces hominis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces hominis Funke, Englert, Frodl, Bernard and Stenger 2010.

Description is based on a single isolate.
Gram-positive coryneform bacteria. Non-partially acid-fast. Non-spore-forming.
Non-motile.
Colonies are white-greyish, convex, not lipophilic, 1.0 mm in diameter on Columbia
agar (Difco) supplemented with 5% horse blood after 72 h at 35 ºC in air plus 5%
CO
2. CAMP test is positive. Facultative anaerobic.
Isolated from a wound swab from a human patient. Susceptible to cefotaxime, doxyxycline, erythromycin, linezolid, meropenem,
penicillin and vancomycin.
Isolated from a wound swab taken from an 89-year-old female patient.
  1. Funke G., Englert R., Frodl R., Bernard K. A. and Stenger S., 2010. Actinomyces hominis sp. nov., isolated from  a wound swab.  
    Int. J. Syst. Bacteriol. Vol. 60, 1678-1681.
Description is based mostly on API CORYNE, API ZYM, and API 50CH results.

Positive results for acid and alkaline phosphatase, catalase, alpha- and beta-galactosidase, alpha-glucosidase, N-acetyl-beta-
glucosaminidase, alpha-mannosidase, nitrate reduction, leucine arylamidase, phosphoamidase, pyrazinamidase, acid production
from: D-adonitol, D- and L-arabitol, erythritol, fructose, galactose, D-glucose, glycogen, gluconate, glycerol, inositol, 5-ketogluconate,
mannose, maltose, melezitose, raffinose, ribose, starch, sucrose &  turanose.

Negative results for cystine arylamidase, chymotrypsin, esterase C4, esculin hydrolysis, alpha-fucosidase, gelatin hydrolysis,
beta-glucosidase, beta-glucuronidase, hippurate hydrolysis, lipase C14, pyrrolidonyl arylamidase, trypsin, urease, valine
arylamidase, acid production from: amygdalin, D-arabinose, arbutin, cellobiose, dulcitol, D- and L-fucose, gentibiose, inulin,
2-ketogluconate, lactose, mannitol, melibiose, methyl-beta-D-glucopyranoside, N-acetylglucosamine, rhamnose, salicin, L-sorbose,
sorbitol, L- and D-xylose.
(c) Costin Stoica
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