Bacteremia due to Gordonia polyisoprenivorans: case report and review of literature

Ding, Xiurong; Yu, Yanhua; Chen, Ming; Wang, Chen; Kang, Yu; Hong-man, LI; Lou, Jinli

doi:10.1186/s12879-017-2523-5

Cited by 11 publications

(9 citation statements)

References 20 publications

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“…A species from phylum Actinomycetes, namely Gordonia polyisoprenivorans, was seen to be enriched specifically in EB and plank biofilm. It was first isolated from automobile tyres and is one of the few available latex degrading microbes (Ding et al, 2017). In addition, G. polyisoprenivorans converts sugars to extracellular polysaccharides, which is responsible for the formation of biofilms (Fusconi et al, 2006).…”

Section: Microbial Community Analysismentioning

confidence: 99%

Development of an electroactive aerobic biocathode for microbial fuel cell applications

Mani

Fidal

Bowman

et al. 2020

Environ Microbiol Rep

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Summary Microbial biocathodes are gaining interest due to their low cost, environmental friendliness and sustainable nature. In this study, a microbial consortium was enriched from activated sludge obtained from a common textile effluent treatment plant in the absence of organic carbon source to produce an electroactive biofilm. Chronoamperometry method of enrichment was carried out for over 70 days to select for electroactive bacteria that could be used as a cathode catalyst in microbial fuel cells (MFC). The resultant biofilm produced an average peak current of −0.7 mA during the enrichment and produced a maximum power density of 64.6 ± 3.5 mW m−2 compared to platinum (72.7 ± 1.2 mW m−2) in a Shewanella‐based MFC. Microbial community analysis of the initial sludge sample and enriched samples, based on 16S rRNA gene sequencing, revealed the selection of chemolithotrophs with the most dominant phylum being Bacteroidetes, Proteobacteria, Firmicutes, Actinobacteria and Acidobacteria in the enriched samples. A variety of CO2 fixing and nitrate‐reducing bacteria was present in the resultant biofilm on the cathode. This study suggests that microbial consortia are capable of replacing expensive platinum as a cathode catalyst in MFCs.

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Section: Microbial Community Analysismentioning

confidence: 99%

Development of an electroactive aerobic biocathode for microbial fuel cell applications

Mani

Fidal

Bowman

et al. 2020

Environ Microbiol Rep

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“…Our search identified 57 eligible articles, of which 92 documented human infections associated with Gordonia spp. were reported [1–5, 7–58] (see for details).…”

Section: Discussionmentioning

confidence: 99%

Gordonia sputi-associated bloodstream infection in a renal transplant patient with chronic indwelling central venous catheter: a case report and literature review

Broderick

Stefanovic

et al. 2023

Access Microbiology

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Introduction. Although rare, human infections caused by Gordonia spp. have been reported, especially within the immunocompromised population and those with long-term indwelling devices. We report a case of Gordonia spp. bacteraemia in a renal transplant patient and present a literature review on microbiological identification methods of this organism. Case Presentation. A 62-year-old female renal transplant recipient admitted to hospital with a 2-month history of dry cough and fevers occurring weekly when receiving electrolyte replacement infusions via a Groshong line. Over 2 weeks, blood cultures repeatedly isolated a Gram-positive bacillus solely in aerobic bottles, and this was initially reported as Rhodococcus spp. by the local microbiology laboratory. Chest computed tomography (CT) showed multiple ground-glass lung opacities suggestive of septic pulmonary emboli. As central line-associated bloodstream infection was suspected, empirical antibiotics were initiated and the Groshong line was removed. The Gram-positive bacillus was later confirmed by the reference laboratory as Gordonia sputi via 16S rRNA sequencing. Vancomycin and ciprofloxacin for a duration of 6 weeks were completed as targeted antimicrobial therapy. After treatment, the patient remained symptom-free with marked improvement on repeat CT chest imaging. Conclusion. This case illustrates the challenges surrounding identification of Gordonia spp. and other aerobic actinomycetes. 16S rRNA gene sequencing may be a preferred identification method, especially when initial workup of a weakly acid-fast organism fails to make an identification or shows discrepant results using traditional diagnostic modalities.

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“…Similarly, strain LTS2331, with a preliminary identification as a Nocardia spp., was eventually identified as Gordonia sputi. Only in recent years have Gordonia species been recognized as emerging pathogens [ 34 ]. Globally, from 1996 to 2015, only 16 cases of infections by Gordonia sputi were reported, and these were associated with infections from catheters or with lung disease in immunocompromised patients [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

The Re-Identification of Previously Unidentifiable Clinical Non-Tuberculous Mycobacterial Isolates Shows Great Species Diversity and the Presence of Other Acid-Fast Genera

et al. 2022

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Non-tuberculous mycobacteria that cannot be identified at the species level represent a challenge for clinical laboratories, as proper species assignment is key to implementing successful treatments or epidemiological studies. We re-identified forty-eight isolates of Ziehl–Neelsen (ZN)-staining-positive “acid-fast bacilli” (AFB), which were isolated in a clinical laboratory and previously identified as Mycobacterium species but were unidentifiable at the species level with the hsp65 PCR restriction fragment length polymorphism analysis (PRA). As most isolates also could not be identified confidently via 16S, hsp65, or rpoB DNA sequencing and a nBLAST search analysis, we employed a phylogenetic method for their identification using the sequences of the 16S rDNA, which resulted in the identification of most AFB and a Mycobacterium species diversity not found before in our laboratory. Most were rare species with only a few clinical reports. Moreover, although selected with the ZN staining as AFB, not all isolates belonged to the genus Mycobacterium, and we report for the first time in Latin America the isolation of Nocardia puris, Tsukamurella pulmosis, and Gordonia sputi from sputum samples of symptomatic patients. We conclude that ZN staining does not differentiate between the genus Mycobacterium and other genera of AFB. Moreover, there is a need for a simple and more accurate tree-based identification method for mycobacterial species. For this purpose, and in development in our lab, is a web-based identification system using a phylogenetic analysis (including all AFB genera) based on 16S rDNA sequences (and in the future multigene datasets) and the closest relatives.

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Bacteremia due to Gordonia polyisoprenivorans: case report and review of literature

Cited by 11 publications

References 20 publications

Development of an electroactive aerobic biocathode for microbial fuel cell applications

Development of an electroactive aerobic biocathode for microbial fuel cell applications

Gordonia sputi-associated bloodstream infection in a renal transplant patient with chronic indwelling central venous catheter: a case report and literature review

The Re-Identification of Previously Unidentifiable Clinical Non-Tuberculous Mycobacterial Isolates Shows Great Species Diversity and the Presence of Other Acid-Fast Genera

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