Actinomycosis is a bacterial infection caused by Gram positive, anaerobic or microaerophilic bacilli, Actinomyces spp. These are higher prokaryotic bacteria belonging to the family Actinomyceataceae. The most frequent pathogen species encountered is Actinomyces israelii [1] but many different species have been described and are associated with pathogenic conditions specific to anatomical sites ...

A dextranase-producing, gram-positive, anaerobic, rod-shaped bacterium isolated from human dental plaque was identified as Actinomyces israeli. Although the extracellular dextranase (EC 3.2.1.11) formed by this microbe appeared to be constitutively produced, the bacterium did not utilize the reaction products as a carbon source during growth. A striking feature of the dextranase was the formati...

Seventy-three freshly isolated oral strains representing 10 Bacteroides spp. were tested for their ability to coaggregate with other oral gram-negative and gram-positive bacteria. None coaggregated with any of the gram-negative strains tested, which included Capnocytophaga gingivalis, C. ochracea, C. sputigena, and Actinobacillus actinomycetemcomitans. Strains of Bacteroides buccae, B. melanino...

BACKGROUND Thoracic actinomycosis is an uncommon, chronic suppurative bacterial infection caused by actinomyces species, especially Actinomyces israelii. METHODS It is usually seen in immunocompetent patients with respiratory disorders, poor oral hygiene, alcoholism and chronic debilitating diseases. RESULTS We illustrate the radiological manifestations of thoracic actinomycoses in various ...

Studies on Eaton PPLO Pneumonia ELLI JANSSON, 0. WAGER, R. STENSTROM, E. KLEMOLA, AND P. FORSSELL ... ... ... ... 142 Sensitivities of Colonies and Suspensions of Actinomyces Israelii to Penicillins, Tetracyclines, and Erythromycin G. C. BLAKE ... ... ... ... 145 Comparison of Ampicillin and Chloramphenicol in Treatment of Paratyphoid Fever R. A. SLEET, G. SANGSTER, AND J. MCC. MURDOCH ... ... ...

BACKGROUND Primary actinomycosis of the anterior abdominal wall and appendix are very rare clinical entities. An accurate diagnosis is generally obtained by histological examination, and treatment often requires surgical resection. CASE REPORT In this study we presented two cases of primary actinomycosis involving the anterior abdominal wall and a third one located in the appendix. CONCLUSI...

Sir, Actinomycosis is a chronic progressive suppurative and granulomatous disease caused by Actinomyces israelii. It can a¡ect all organs and tissues of the body, however, primary cutaneous actinomycosis is rare (1). The lesions occur as subcutaneous nodules, usually on the exposed areas, which enlarge slowly and ulcerate to form sinuses. The disease continues for several years, causing marked ...