Actinomyces massiliensis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces massiliensis  Renvoise, Raoult and Roux 2009.

Species description is based on a single isolate.
Gram-positive straight rods, 0.5-1.7 / 0.35-0.74 µm.
Colonies are white, shiny and pinpoint on agar (bioMerieux) supplemented with 5%
sheep blood after 48 h at 37 ºC  in air plus 5% CO
2. Anaerobic or microaerophilic.
Non-haemolytic.
Isolated from a human blood sample.
Susceptible to amoxicillin, cefotetan, doxyxycline, erythromycin, trimethoprim + sulfamethoxazole,  rifampicin, imipenem, gentamicin,
penicillin and vancomycin.
Undetermined.
  1. Renvoise A., Raoult D. and Roux V, 2010. Actinomyces massiliensis sp. nov., isolated from  a patient blood culture.  Int. J. Syst.
    Evol. Microbiol. Vol. 59, 540-544.
Decription is based on API Rapid ID 32 A, API ZYM and API 50CHB results.

Positive results for beta-galactosidase, nitrate reduction, alpha-glucosidase, leucine arylamidase, valine  arylamidase, acid production
from: fructose, galactose, D-glucose, lactose, D-lyxose, maltose, mannose (weak reaction), melezitose, ribose (weak reaction),
sucrose, trehalose, turanose & D-xylose.

Negative results for acid and alkaline phosphatase, arginine dihydrolase, catalase, cystine arylamidase, alpha-chemotrypsin, esterase
C4, ester lipase C8, lipase C14, alpha-fucosidase, alpha-galactosidase, N-acetyl-beta-glucosaminidase, beta-glucosidase,
beta-glucuronidase, indole production, nitrate reduction, alpha-mannosidase, oxidase, trypsin, urease, acid production from:
D-arabinose, D- and L-arabitol, D-adonitol, amygdalin, arbutin, cellobiose, dulcitol, erythritol, D- and L-fucose, gentibiose, glycogen,
glycerol,gluconate, 2- and 5-ketogluconate, inositol, inulin, mannitol, melibiose, methyl-beta-D-glucopyranoside, N-acetylglucosamine,
raffinose,rhamnose, salicin, sorbitol, L-sorbose, starch, tagatose, L-xylose & xylitol.
(c) Costin Stoica
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