Classification of Coryneform Bacteria Associated With Human Urinary Tract Infection (group D2) As Corynebacterium urealyticum sp. nov

National Collection of Type Cultures, Central Public Health Laboratory, London, United Kingdom.
International journal of systematic bacteriology (Impact Factor: 2.27). 02/1992; 42(1):178-81. DOI: 10.1099/00207713-42-1-178
Source: PubMed


Urealytic strains of coryneform bacteria that are designated Corynebacterium group D2 and are isolated from human urine are a cause of urinary tract infections. Cell wall and lipid analyses confirmed that these organisms are members of the genus Corynebacterium but can be separated from other species in the genus on the basis of DNA base composition and DNA-DNA hybridization values. Biochemically, strains in this taxon can be distinguished from other Corynebacterium spp. by their failure to produce acid from carbohydrates, by their failure to reduce nitrates, and by their ability to hydrolyze urea. We regard these bacteria as a new species of the genus Corynebacterium and propose the name Corynebacterium urealyticum. The type strain is strain NCTC 12011 (= ATCC 43042).

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Available from: Pedro Luis Valero-Guillén, Jan 28, 2015
    • "However, this increase in bacterial richness might entail increased competition with bacteria for nutrients . Indeed, some taxa with urease and nitrate reduction activities were present, such as Mycobacterium[78,79], Corynebacterium[80,81]and Sphingobacterium[82]. The genus Mycobacterium also includes animal pathogens[83,84]and thus could possibly have been introduced by infected bats. "
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    ABSTRACT: Carnivorous plants of the genus Nepenthes have been studied for over a century, but surprisingly little is known about associations with microorganisms. The two species Nepenthes rafflesiana and Nepenthes hemsleyana differ in their pitcher-mediated nutrient sources, sequestering nitrogen from arthropod prey and arthropods as well as bat faeces, respectively. We expected bacterial communities living in the pitchers to resemble this diet difference. Samples were taken from different parts of the pitchers (leaf, peristome, inside, outside, digestive fluid) of both species. Bacterial communities were determined using culture-independent high-throughput amplicon sequencing. Bacterial richness and community structure were similar in leaves, peristomes, inside and outside walls of both plant species. Regarding digestive fluids, bacterial richness was higher in N. hemsleyana than in N. rafflesiana. Additionally, digestive fluid communities were highly variable in structure, with strain-specific differences in community composition between replicates. Acidophilic taxa were mostly of low abundance, except the genus Acidocella, which strikingly reached extremely high levels in two N. rafflesiana fluids. In N. hemsleyana fluid, some taxa classified as vertebrate gut symbionts as well as saprophytes were enriched compared to N. rafflesiana, with saprophytes constituting potential competitors for nutrients. The high variation in community structure might be caused by a number of biotic and abiotic factors. Nitrogen-fixing bacteria were present in both study species, which might provide essential nutrients to the plant at times of low prey capture and/or rare encounters with bats.
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    • "Red blood cells/high power field y White blood cells/high power field small animals (Elad et al 1992, Gomez et al 1995, Suarez et al 2002) and moreover, to the authors' knowledge, only one report describes two cases of UTI caused by this organism in cats (Bailiff et al 2005). C urealyticum, previously known as the Corynebacterium group D 2 (Pitcher et al 1992), is a commensal microrganism of the human skin whose opportunistic pathogenic role in urine has been demonstrated in vitro and in vivo (Meria and Jungers 2000). The source for cats is less clear, but microrganisms identified as Corynebacterium species have been isolated as part of the normal flora of the feline genital tract (Strom Holst et al 2003). "
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