Ralstonia pickettii—innocent bystander or a potential threat?

Stelzmueller, Ingrid; Biebl, M.; Wiesmayr, Silke; Eller, M.; Hoeller, Elisabeth; Fille, Manfred; Weiß, Günter; Lass-Floerl, Cornelia; Bonatti, Hugo

doi:10.1111/j.1469-0691.2005.01309.x

Cited by 66 publications

(54 citation statements)

References 17 publications

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“…Another group of Gram-negative bacilli occasionally isolated from individuals with CF belong to the genus Ralstonia (76, 100,101,107,495). Although the presence of this bacterium is often transient, in some CF patients the same strain of Ralstonia may be recovered for weeks or months, indicating chronic infection (106,579). Again, identification of these bacteria can be problematic, but new molecular approaches show promise of being more satisfactory (104,106).…”

Section: Other Microbesmentioning

confidence: 99%

Clinical Significance of Microbial Infection and Adaptation in Cystic Fibrosis

et al. 2011

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SUMMARY A select group of microorganisms inhabit the airways of individuals with cystic fibrosis. Once established within the pulmonary environment in these patients, many of these microbes adapt by altering aspects of their structure and physiology. Some of these microbes and adaptations are associated with more rapid deterioration in lung function and overall clinical status, whereas others appear to have little effect. Here we review current evidence supporting or refuting a role for the different microbes and their adaptations in contributing to poor clinical outcomes in cystic fibrosis.

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Section: Other Microbesmentioning

confidence: 99%

Clinical Significance of Microbial Infection and Adaptation in Cystic Fibrosis

et al. 2011

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“…These Ralstonia species are pathogens (Daxboeck et al, 2005;Stelzmueller et al, 2006). It is noteworthy that only five clones of Pseudomonas fluorescens, a species which was previously reported to be abundant in the cave (Orial & Mertz, 2006), were recorded.…”

Section: F Bastian and Othersmentioning

confidence: 99%

The microbiology of Lascaux Cave

et al. 2010

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Lascaux Cave (Montignac, France) contains paintings from the Upper Paleolithic period. Shortly after its discovery in 1940, the cave was seriously disturbed by major destructive interventions. In 1963, the cave was closed due to algal growth on the walls. In 2001, the ceiling, walls and sediments were colonized by the fungus Fusarium solani. Later, black stains, probably of fungal origin, appeared on the walls. Biocide treatments, including quaternary ammonium derivatives, were extensively applied for a few years, and have been in use again since January 2008. The microbial communities in Lascaux Cave were shown to be composed of human-pathogenic bacteria and entomopathogenic fungi, the former as a result of the biocide selection. The data show that fungi play an important role in the cave, and arthropods contribute to the dispersion of conidia. A careful study on the fungal ecology is needed in order to complete the cave food web and to control the black stains threatening the Paleolithic paintings.

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“…In literature, several reports are available describing them as pathogens in several types of infections. [22][23][24][25][26] In this study, Flavobacterium spp. were isolated from UTI and wound infections.…”

Section: Discussionmentioning

confidence: 99%

Speciation of oxidase-positive non-fermentative gram-negative bacilli

Kalawat¹,

Sumathi²,

Prada³

et al. 2012

Scho Res J

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Background: Due to lack of simple and economic methods for speciation of oxidase-positive non-fermentative gram-negative bacilli (NFGNB) and the belief that most of them are saprophytes, the oxidase-positive isolates are reported as Pseudomonas aeruginosa without further testing for identification. Any commensal or saprophyte can cause infections when a suitable opportunity arises. This is also true for oxidase-positive NFGNBs which are widely being reported from different clinical settings among immunocompromised as well as immunocompetent patients. There are contrasting differences in the antibiotic sensitivities of these organisms making identification and sensitivity testing a necessity. Objectives: This study was conducted to speciate various oxidase-positive NFGNBs from different clinical samples and to study their antibiotic sensitivity profile. Materials and Methods: Oxidase-positive clinical isolates from various samples were characterized by biochemical analysis using a battery of tests. Antibiotic sensitivity was done according to National Committee on Clinical Laboratory Standards (NCCLS) guidelines for antibiotic susceptibility testing for P. aeruginosa. Results: We isolated 78 different types of oxidase-positive species from different clinical samples. The various samples included urine, sputum, Bronchoalveolar lavage, Cerebrospinal fluid (BAL, CSF), blood, pus, catheter tips, and body fluid. P. aeruginosa was the commonest isolate comprising 25 (32%), followed by Moraxella catarrhalis (11.5%), Pseudomonas sp. CDC group 17 (8.9%), and Moraxella osloensis and CDC Vb-3 (each 5.1%) among others. Conclusions: Identification and antibiotic sensitivity testing of oxidase-positive NFGNBs are necessary for apt therapy as they are widely prevalent in the environment and can cause a wide spectrum of infections.

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Ralstonia pickettii—innocent bystander or a potential threat?

Cited by 66 publications

References 17 publications

Clinical Significance of Microbial Infection and Adaptation in Cystic Fibrosis

Clinical Significance of Microbial Infection and Adaptation in Cystic Fibrosis

The microbiology of Lascaux Cave

Speciation of oxidase-positive non-fermentative gram-negative bacilli

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