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Butyricimonas virosa: the first clinical case of bacteraemia.

ABSTRACT: The strictly anaerobic Gram-negative bacteria Butyricimonas species have recently been described in human faeces and have to our knowledge not been isolated in infectious clinical materials. We report the first case of Butyricimonas virosa bacteraemia in a 72-year-old man with colon adenocarcinoma, who underwent aortic aneurysm replacement surgery.

SUBMITTER: Ulger Toprak N

PROVIDER: S-EPMC4354871 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature

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Butyricimonas virosa: the first clinical case of bacteraemia.

Ulger Toprak N N Bozan T T Birkan Y Y Isbir S S Soyletir G G

New microbes and new infections 20150112

The strictly anaerobic Gram-negative bacteria Butyricimonas species have recently been described in human faeces and have to our knowledge not been isolated in infectious clinical materials. We report the first case of Butyricimonas virosa bacteraemia in a 72-year-old man with colon adenocarcinoma, who underwent aortic aneurysm replacement surgery. ...[more]

PMID: 25830028

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Project description:Wild mushroom foraging involves a high risk of unintentional consumption of poisonous mushrooms which is a serious health concern. This problem arises due to the close morphological resemblances of toxic mushrooms with edible ones. The genus Inocybe comprises both edible and poisonous species and it is therefore important to differentiate them. Knowledge about their chemical nature will unambiguously determine their edibility and aid in an effective treatment in case of poisonings. In the present study, the presence of volatile toxic metabolites was verified in Inocybe virosa by gas chromatography. Methyl palmitate, phenol, 3,5-bis (1,1-dimethyl ethyl) and phytol were the identified compounds with suspected toxicity. The presence of the toxin muscarine was confirmed by liquid chromatography. The in vitro study showed that there was negligible effect of the digestion process on muscarine content or its toxicity. Therefore, the role of muscarine in the toxicity of Inocybe virosa was studied using a bioassay wherein metameters such as hypersalivation, immobility, excessive defecation, heart rate and micturition were measured. Administration of muscarine resulted in an earlier onset of symptoms and the extract showed a slightly stronger muscarinic effect in comparison to an equivalent dose of muscarine estimated in it. Further, the biological fate of muscarine was studied by pharmacokinetics and gamma scintigraphy in New Zealand white rabbits. Significant amount of the toxin was rapidly and effectively concentrated in the thorax and head region. This study closely explains the early muscarinic response such as miosis and salivation in mice. By the end of 24 h, a relatively major proportion of muscarine administered was accumulated in the liver which stands as an explanation to the hepatotoxicity of Inocybe virosa. This is one of the rare studies that has attempted to understand the toxic potential of muscarine which has previously been explored extensively for its pharmaceutical applications.

Dataset Information

Butyricimonas virosa: the first clinical case of bacteraemia.

Publications

Butyricimonas virosa: the first clinical case of bacteraemia.

Similar Datasets

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