The cell wall fraction of the gram-positive, nontoxic Corynebacterium diphtheriae strain C8r(-) Tox- (=ATCC 11913) contained a channel-forming protein, as judged from reconstitution experiments with artificial lipid bilayer experiments. The channel-forming protein was present in detergent-treated cell walls and in extracts of whole cells obtained using organic solvents. The protein had an appar...

Kern WV, et al. Prolonged polyarthralgia in a German traveller with Mayaro virus infection without inflammatory correlates. et al. Direct broad-range detection of al-phaviruses in mosquito extracts. Virol-Genetic relationships among Mayaro and Una viruses suggest distinct patterns of transmission. To the Editor: Toxigenic Coryne-bacterium ulcerans is an increasingly reported cause of diphtheria...

A nonlysogenic, non-toxinogenic strain was isolated from the PW8 strain of C. diphtheriae by two-step ultraviolet induction. This strain was lysed by phages derived from the PW8 strain but not by beta phages from the C7(beta) strain. When this cured strain was lysogenized with phages from the PW8 strain, toxin production by the resulting lysogens was about a half or a quarter of that of the par...

We report an unusual case of iris rubeosis and hyphema caused by chemical injury due to household detergent. A 74-year-old man with a 15-year history of diabetes mellitus was refilling a container with household detergent at home. He splashed the detergent in his eyes. Slit-lamp examination revealed extensive epithelial damage to the left eye, leading to a persistent corneal epithelial defect. ...

The genus Corynebacterium is a heterogeneous group of species comprising human and animal pathogens and environmental bacteria. It is defined on the basis of several phenotypic characters and the results of DNA-DNA relatedness and, more recently, 16S rRNA gene sequencing. However, the 16S rRNA gene is not polymorphic enough to ensure reliable phylogenetic studies and needs to be completely sequ...

Organism studied. Corynebacteriunm diphtheriae, type mnitis, strain A9255. Growth media included M. and E. (AMorton and Engley, 1945) broth and agar, with and without enrichment by whole blood, plasma or the lysate from human blood cells subjected to freezing and thawing. Culture was usually at 37 C; occasionally, at room temperature. Stained preparations. Cells in broth culture were placed on ...

BACKGROUND Gentisate (2,5-dihydroxybenzoate) is a key ring-cleavage substrate involved in various aromatic compounds degradation. Corynebacterium glutamicum ATCC13032 is capable of growing on gentisate and genK was proposed to encode a transporter involved in this utilization by its disruption in the restriction-deficient mutant RES167. Its biochemical characterization by uptake assay using [(1...

Corynebacterium ulcerans in an immuno-compromised patient with diphtheria and her dog. zoonotic transmission of toxigenic Cory-nebacterium ulcerans from companion animals in a human case of fatal diphtheria .acterization of toxigenic Corynebacterium ulcerans strains isolated from humans and domestic cats in the United Kingdom. Matrix-assisted laser desorption/ionisa-tion time-of-fl ight (MALDI-...