We encountered a patient with a history of intravenous drug use presenting with fever, malaise and nausea who was found to have cavitary lung lesions. Unexpectedly, gram positive rods grew out on day five on multiple blood cultures, which were later identified as Mycobacterium fortuitum. The patient underwent transesophageal echocardiogram, which showed aortic and tricuspid valve vegetations. L...

The study of 52 strains of rapidly growing mycobacteria showed that Mycobacterium fortuitum and M. chelonei were clearly distinguished by the aid of seven key tests (nitrate reductase, iron uptake, beta-glucosidase, penicillinase, growth on fructose, resistance to pipemidic acid, and resistance to capreomycin) and by analysis of their respective mycolic acids. However, the subdivision of these ...

The in vitro activities of TP-271, a novel fluorocycline antimicrobial, against 22 isolates of Mycobacterium abscessus, 22 isolates of Mycobacterium fortuitum, and 19 isolates of Nocardia spp. were studied by a microtiter broth dilution method. The MIC(90)s for M. abscessus, M. fortuitum, and Nocardia spp. were 0.5 μg/ml, 0.03 μg/ml, and 8 μg/ml, respectively. TP-271 was significantly more acti...

This research compared the numbers and types of different Mycobacterium species in soil samples taken from 2 areas of Golestan province, Islamic Republic of Iran, 1 with a high prevalence of tuberculosis and 1 with a low prevalence. From 220 samples, 91 grew positive cultures (41.4%) and 161 different strains were diagnosed. The most common species isolated were Mycobacterium fortuitum, M. flav...

A black-pigmented strain developed spontaneously from a typical strain of Mycobacterium fortuitum.

Rapidly growing mycobacteria (RGM) are found in soil and diverse aquatic environments. Two species, Mycobacterium fortuitum and Mycobacterium chelonae, are associated with disease and are difficult to eradicate. Biofilm formation may be a contributing factor to their mode of transmission and their resistance to antimicrobial agents. We investigated the ability of the RGM species M. fortuitum to...

The arylsulfatase isozymes of Mycobacterium fortuitum, M. peregrinum, M. chelonei subsp. chelonei, and M. chelonei subsp. abscessus were examined to determine the isozymal and immunological relationship among the members of the M. fortuitum complex. Cell extracts were subjected to electrophoresis on agarose and polyacrylamide gel, and arylsulfatase activity was localized using beta-naphthyl sul...

BACKGROUND & OBJECTIVES Eales' disease is an idiopathic disease resulting in retinal neovascularization, recurrent haemorrhages, with or without retinal detachment predominantly affecting healthy young males (97.6%) in the Indian subcontinent. Inspite of several studies, the aetiology of Eales' disease is not clear. The isolation of Mycobacterium fortuitum from the aqueous humour of a patient w...

BACKGROUND Difficult-to-treat infections caused by rapidly growing mycobacteria (RGM) are increasingly observed in clinical settings. However, studies on antimicrobial susceptibilities and effective treatments against RGM in Japan are limited. METHODS We conducted susceptibility testing of potential antimicrobial agents, including tigecycline and tebipenem, against RGM. Clinical RGM isolates ...