Actinomyces israelii

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Related to Actinomyces israelii: Nocardia asteroides

Ac·ti·no·my·ces is·rae·'li·i

the most common species of actinomyces causing human actinomycosis; it also occasionally infects cattle.

Ac·ti·no·my·ces is·rae·lii

(ak'ti-nō-mī'sēz iz-rā-el'ē-ē)
A species of bacteria causing human actinomycosis and, occasionally, infections in cattle.


James Adolf, German urologist, 1848-1926.
Actinomyces israelii


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

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.
References in periodicals archive ?
Susceptibility of Actinomyces israelii to antibiotics, sodium hypochlorite and calcium hydroxide.
Thoracic vertebral actinomycosis: Actinomyces israelii and Fusobacterium nucleatum.
Actinomyces israelii was identified from findings of Gram-positive extremely fine filamentous forms (see Fig.
Till date, about 32 cases of primary actinomycosis of breast have been reported with Actinomyces israelii being the commonest isolate.
Primary sternal osteomyelitis caused by Actinomyces israelii.
Actinomycosis is a chronic systemic fungal infection caused by Actinomyces israelii and related anaerobic filament.
The predominant causative agent of actinomycosis is Actinomyces israelii, which is a Gram-positive, anaerobic, filamentous bacterium that normally colonizes the oral cavity, the gastrointestinal tract, and the vagina.
3) Actinomyces israelii consistently responds well to antibiotic treatment.
The principal agent of human infections is Actinomyces israelii.
Several members of the order Actinomycetales can cause infection, most commonly Actinomyces israelii, a Gram-positive rod colonizing the mouth, gastrointestinal tract, and vagina in healthy individuals.