Actinomycosis is a rare, chronic, suppurative and granulomatous disease caused by Actinomyces israelii, which is a filamentous, anaerobic, gram-positive, saprophytic organism in the oral cavity. Diagnosis of actinomycosis depends on positive culture or identification of Actinomyces colonies and sulfur granules in histological specimens. In our case, a mass had been growing in the mandible for e...

pediatric cervicofacial actinomycosis is a rare occurrence consequent to dental infections and manipulations or maxillofacial trauma. the clinical presentation ranges from multiple draining sinuses to swellings resembling tumors and cysts. the present unusual case had congenital dermoid cyst of mid upper lip with actinomyces israelii infection identified on microscopy, culture, and histopatholo...

OBJECTIVES The poor sensitivity of phenotypic identification techniques has hampered the taxonomic differentiation of Actinomyces. Hence we developed a sensitive and specific, PCR-based oligonucleotide-DNA hybridization technique to detect Actinomyces spp. and, used this method to detect these organisms in samples directly obtained from infected root canals. METHODS A total of 32 samples from...

Contrary to what used to be the case, actinomycosis is now a rare disease and only infrequently mentioned in otolaryngological textbooks (Ballantyne, J. and Groves, J. 1979). The disease is a chronic suppurative infection caused by micro-organisms from the actinomyces group, most often israelii. Actinomyces species are all oral commensals. They are gram-positive, non acid-fast, anaerobic or mic...

Five strains of Prevotella intermedia were examined for their ability to coaggregate with various gram-positive and gram-negative species of oral bacteria. Two of the P. intermedia strains coaggregated with selected Actinomyces species, P. intermedia 27 with Actinomyces viscosus T14V and Actinomyces naeslundii ATCC 12104, PK606, PK984, and PK947, and P. intermedia 113 with Actinomyces odontolyt...

Actinomyces israelii is a gram-positive, filamentous anaerobic bacteria colonizing the oral and gastrointestinal tracts. Retroperitoneal actinomycotic abscess is uncommon and its rare presentation as a hemorrhagic mass may be confused with malignancy. We present a case of this unusual infection complicating pregnancy. Increased awareness of actinomycotic abscess in the differential diagnosis of...

Human actinomycosis is a bacterial infection caused primarily by Actinomyces israelii, a resident of the oral cavity. The cervicofacial region is most commonly affected; thoracic and abdominal forms of the disease have also been distinguished. Actinomycosis is sometimes difficult to diagnose and it should be borne in mind in the differential diagnosis of numerous infectious and non-infectious d...

Uterine secretions were obtained from 110 women and analysed by counterimmunoelectrophoresis for the occurrence of precipitation reactions against Actinomyces israelii antigens. Precipitation reactions were found in secretions from seven women and a correlation was found between these reactions and long term use of plastic intrauterine devices. The precipitating components could not be proved t...

was developed by using 2'-(4-methylumbelliferyl)oa-D-N-acetylneuraminic acid as substrate in a filter paper spot test. The method was compared to conventional assays that use 2'-(4-methylumbelliferyl)ax-D-N-acetylneuraminic acid and bovine submaxillary mucin and was found to be in excellent agreement. Organisms with >10 U of enzyme activity (in nanomoles per minute per milligram of cell protein...