Actinomyces (redirected from Actinomyces pyogenes)

Actinomyces /Ac·ti·no·my·ces/ (-mi´sez) a genus of bacteria (family Actinomycetaceae).

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Actinomyces israe´lii  a species parasitic in the mouth, proliferating in necrotic tissue; it is the etiologic agent of human actinomycosis and can cause actinomycotic mycetoma.

Actinomyces naeslun´dii  an anaerobic species that is a normal inhabitant of the oral cavity and a cause of human actinomycosis and periodontal disease.

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Ac·ti·no·my·ces (kt-n-msz)

n.

A genus of nonmotile, non-spore-producing, anaerobic to facultatively anaerobic bacteria pathogenic to humans.

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Actinomyces

a genus of non-acid-fast, gram-positive organisms that form a mycelium of branching filaments that fragment into irregular-sized fragments.

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Actinomyces bovis

the cause of actinomycosis of cattle and sheep.

Actinomyces congolensis, Actinomyces dermatonomus

see dermatophiluscongolensis.

Actinomyces hordeovulneris

a cause of abscesses, pleuritis and systemic infections in dogs where it is often associated with penetration by grass awns (foxtails) of Hordeum spp.

Actinomyces israelii

an uncommon cause of actinomycosis in cattle and pigs.

Actinomyces necrophorus

see fusobacteriumnecrophorum.

Actinomyces pyogenes

now called Arcanobacterium pyogenes.

Actinomyces suis

the cause of actinomycosis of the swine mammary gland.

Actinomyces viscosus

the cause of periodontal disease in hamsters, and opportunistic infections of dogs.

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actinomyces

an organism of the genus Actinomyces.

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Actinomyces Microbiology A genus of slow-growing, facultatively anaerobic, nonmotile, nonspore-forming, gram-positive bacteria, which form branching, irregularly staining filaments, filamentous microcolonies, and metabolize by fermentation of certain sugars. See Actinomycosis, Sulfur granules. Cf Bacteroides spp, Nocardiaspp.