Reactive oxygen and nitrogen intermediates have critical, partially overlapping roles in host defense against a variety of pathogens. Using mice deficient in generating phagocyte superoxide (p47(phox)(-/-)) and mice deficient in generating inducible nitric oxide synthase (iNOS(-/-)), we examined the roles of these reactive species in host defense against Burkholderia cepacia and Chromobacterium...

A factor diffuses from Escherichia colt that temporarily or permanently prevents separate pre-aggregation cells of Dictyostelium discoideum from forming aggregation centres or streams. Centres are inhibited at a greater distance from the bacteria than are streams. The inhibitor does not support the slime-mould's growth, and it has different properties from previously discovered aggregation-cent...

Trichophyton violaceum is an uncommon cause of tinea pedis. We report a case of bullous tinea pedis caused T. violaceum in a 7-year old otherwise healthy child living in the United States. She achieved clinical recovery with a 1month course of oral terbinafine.

Chromobacterium pseudoviolaceum LMG 3953T was separated from Chromobacterium violaceum in 2009, but little is known of its origin or environmental role. Here, the genome of LMG 3953T was sequenced to understand the evolution of the genus Chromobacterium It is not clear from this sequence that C. pseudoviolaceum is taxonomically distinct from C. violaceum.

Chromobacterium violaceum is a Gram-negative proteobacteria found in water and soil; it is widely distributed in tropical and subtropical regions, such as the Amazon rainforest. We examined protein expression changes that occur in C. violaceum at different growth temperatures using electrophoresis and mass spectrometry. The total number of spots detected was 1985; the number ranged from 99 to 3...

BACKGROUND Increasing reported cases with Chrombacterium violaceum infection has been noticed in recent decades. It is noteworthy for its difficult-to-treat entity characterized by a high frequency of sepsis, easily distantant metastasis, multidrug-resistance, and frequent relapse, and high mortality rate. METHODS The English-language literature was reviewed from 1952 through December 2009 by...

The pigmentation of the gram-negative bacteria known as Chromobacterium violaceum is characterized by a dark violet color. This study focused on the identification of a gene involved in C. violaceum pigment production. In order to identify one of the genes responsible for pigmentation of this organism, functional genomics methods were implemented using a form of knockout gene; which provides th...

Chromobacterium violaceum infection is rare but causes a high mortality rate particularly in immunosuppressed persons. Since its clinical presentation is non-specific and the diagnosis basically relies upon blood culture and sensitivity, this infection should be considered among the organisms targeted empirically for antibiotic therapy when a cellulitis or rapidly progressive illness follows ex...

Chromobacterium violaceum, a saprophyte bacterium found commonly in soil and water in tropical and subtropical climates, is a rare cause of severe, often fatal, human disease. We report 1 confirmed and 2 suspected cases of C. violaceum septicemia, with 2 fatalities, in siblings after recreational exposure in northeastern Brazil.

The draft genome sequences of two Chromobacterium violaceum strains isolated from the Rio Negro are reported here. These bacteria carry most genetic systems associated with the production of bioactive compounds, but unlike other C. violaceum strains, they lack a dedicated operon for arsenic resistance.