When infection is caused by this bacterium, the infection is typically chronic and granulomatous in nature and is most often caused by Actinomyces israelii
The commonest specie is actinomyces Israelii
.5 This was also the causative agent in our case.
The number of the following bacteria declined in the control group: Blautia producta, Clostridium clostridiforme, Lactobacillus acidophilus, Capnocytophaga ochracea, and Streptococcus sanguinis, and the number of the following bacteria increased: Actinomyces israelii
, Actinomyces naeslundii, Campylobacter gracilis, Streptococcus mitis, Streptococcus salivarium, Escherichia coli, and Neisseria subflava, as well as fungi Candida albicans (Table 5).
Evans, "Actinomyces israelii
in the female genital tract: a review," Genitourinary Medicine, vol.
(iii) Actinomyces israelii
usually causes localized cervicofacial disease where as Actinomyces meyeri is noted to cause pulmonary infection with propensity to cause systemic disseminated disease involving skin, long bones, muscle, liver, and brain.
Actinomycosis is a bacterial infection due to Actinomyces israelii
, a gram-positive anaerobic organism.
Qureshi et al., "Antimicrobial activity of varying concentrations of sodium hypochlorite on the endodontic microorganisms Actinomyces israelii
Coinfection of Fusobacterium nucleatum and Actinomyces israelii
in mastoiditis diagnosed by next-generation DNA sequencing.
Culture results showed heavy growth of Actinomyces israelii
and Gram positive rods, moderate growth of Gram positive cocci, and numerous WBC.
The bacteria that were used in this study were Salmonella typhi (PTCC 1319), Escherichia coli (PTCC 1533), Haemophilus influenzae (PTCC 1484), Pseudomonas aeruginosa (PTCC 1310), Klebsiella oxytoca (PTCC 1609), Antro bacter (PTCC 1298), Staphylococcus aureus, Listeria monocytogenes, Staphylococcus epidermidi, Staphylococcus haemolyticus, Streptococcus suis, Treptococcus dysgalactiae, Clostridium Perfringens, Actinomyces israelii
, Clostridium botulinum, Actinomyces europaeus.
3: histopathologic specimen shows filamentous branching bacteria (arrows) positive to silver impregnation, characteristic of grains of Actinomyces israelii
In man, it is usually caused by Actinomyces israelii
and less often by Arachnia (Actinomyces) propionica, Actinomyces naeslundii, Actinomyces viscosus, and Actinomyces odontolyticus.