BACKGROUND Chromobacterium violaceum is a free-living β-proteobacterium found in tropical and subtropical regions. The genomic sequencing of C. violaceum ATCC 12472 has revealed many genes that underpin its adaptability to diverse ecosystems. Moreover, C. violaceum genes with potential applications in industry, medicine and agriculture have also been identified, such as those encoding chitinase...

Background and Purpose: The epidemiological features of dermatophytoses have been characterized in many geographical locations of Iran, but not in Guilan, North of Iran. This study was carried out to determine the distribution pattern of dermatophytoses and their relevant agents in Guilan, North of Iran, over a period of one year, from April 2010 to April 2011. Materials and Methods: The clini...

OBJECTIVES Recently, bergamot oil was shown to be a potent antifungal agent in vitro against clinically important Candida species. In this study, the activities of bergamot natural essence and its furocoumarin-free and distilled extracts on dermatophytes such as Trichophyton, Microsporum and Epidermophyton species were investigated. METHODS In vitro susceptibility testing assays on 92 clinica...

Tinea capitis caused by Trichophyton tonsurans has been increasing in the United States for the past 25 years. A retrospective study of dermatophyte culture data at the University of California, San Francisco, and a parallel study of patient visits for tinea capitis at an affiliated hospital demonstrates a dramatic rise in Trichophyton tonsurans tinea capitis in the San Francisco Bay area.

Onychomycosis is a common adult human mycosis, and dermatophytes of the Trichophyton genera are the most common causative agent. Many antimycotic agents are safe and highly effective for the treatment of dermatophytosis, and are available for clinical practice. Successful treatment depends on the ability of antifungal drugs to eradicate the fungal isolates. The aim of this work was to determine...

The effects of several physical and chemical agents on the survival of Trichophyton mentagrophytes arthrospores were investigated. Although arthrospores of this dermatophyte were highly resistant to chilling and freezing, they were extremely susceptible to moderate heat (above 50 degrees C) and desiccation. This high susceptibility could be significantly reduced when they were dried in the pres...

Iodobacter species are among a number of freshwater Gram-negative violacein-producing bacteria. Janthinobacterium lividum and Chromobacterium violaceum have had their whole genomes sequenced and annotated. This is the first report of a draft whole-genome sequence of a violacein-producing Iodobacter strain that was isolated from the Hudson Valley watershed.

Seven species of Microsporum, 4 of Trichophyton and 1 Epidermophyton including 55 species belonging to 33 genera were studied for extracellular keratinase. The preliminary screening was done as their ability to develop clearing zone formation. The keratinase of Microsporum species ranged from 50-300ku/ml and of Trichophyton 100-140ku/ml while that of Epidermophyton was 20ku/ml.

Eighteen plant extracts from nine traditional Mexican medicinal plants were tested for antifungal activity against two dermatophyte fungal species (Trichophyton mentagrophytes and Trichophyton rubrum), one non-dermatophyte (Aspergillus niger), and one yeast (Candida albicans). The strongest effect was manifested by the hexane extracts from Eupatorium aschenbornianum and Sedum oxypetalum, as wel...