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Article: Bacteraemia caused by Anaerotruncus colihominis and emended description of the species

TitleBacteraemia caused by Anaerotruncus colihominis and emended description of the species
Authors
Issue Date2006
PublisherB M J Publishing Group. The Journal's web site is located at http://jcp.bmjjournals.com/
Citation
Journal Of Clinical Pathology, 2006, v. 59 n. 7, p. 748-752 How to Cite?
Abstract
Background: Anaerotruncus colihomonis is a newly described bacterial genus and species isolated from the stool specimens of children. Its clinical significance, however, is unknown. Aims: To describe a case of A colihominis bacteraemia identified by 165 ribosomal RNA (rRNA) gene sequencing and provide an emended description of the species. Methods: An unidentified anaerobic bacillus (strain HKU19) that stains Gram negative was subjected to characterisation by 16S rRNA gene sequencing, G+C content determination and electron microscopy. Results: Strain HKU19 was isolated from the blood culture of a 78-year-old woman with nosocomial bacteraemia. It was found to be an anaerobic, non-motile, pleomorphic, thin bacillus that stains Gram negative. It produces Indole and utilises glucose and mannose. Identifying the strain to the species level was not possible by conventional phenotypic tests and commercial identification systems. The G+C content of strain HKU19 was found to be 53.43 mol%. A similarity of 99.3% nucleotide identities was found between the 16S rRNA gene sequence of strain HKU19 and that of A colihominis WAL 14 565T, which was isolated from a human faecal specimen. In contrast with the original description of A colihominis, HKU19 was found to produce occasional oval, terminal spores, although the other phenotypic characteristics matched. Spores were also occasionally observed when the two previously reported strains were re-examined. Conclusions: Although the source of the bacteraemia in the patient cannot be determined, this report suggests that A colihominis is of clinical significance. Spore formation is proposed as an emended description of A colihominis.
Persistent Identifierhttp://hdl.handle.net/10722/45171
ISSN
2013 Impact Factor: 2.551
PubMed Central ID
ISI Accession Number ID
References

 

Author Affiliations
  1. The University of Hong Kong
  2. David Geffen School of Medicine at UCLA
  3. null
DC FieldValueLanguage
dc.contributor.authorLau, SKPen_HK
dc.contributor.authorWoo, PCYen_HK
dc.contributor.authorWoo, GKSen_HK
dc.contributor.authorFung, AMYen_HK
dc.contributor.authorNgan, AHYen_HK
dc.contributor.authorSong, Yen_HK
dc.contributor.authorLiu, Cen_HK
dc.contributor.authorSummanen, Pen_HK
dc.contributor.authorFinegold, SMen_HK
dc.contributor.authorYuen, KYen_HK
dc.date.accessioned2007-10-30T06:18:58Z-
dc.date.available2007-10-30T06:18:58Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Clinical Pathology, 2006, v. 59 n. 7, p. 748-752en_HK
dc.identifier.issn0021-9746en_HK
dc.identifier.urihttp://hdl.handle.net/10722/45171-
dc.description.abstractBackground: Anaerotruncus colihomonis is a newly described bacterial genus and species isolated from the stool specimens of children. Its clinical significance, however, is unknown. Aims: To describe a case of A colihominis bacteraemia identified by 165 ribosomal RNA (rRNA) gene sequencing and provide an emended description of the species. Methods: An unidentified anaerobic bacillus (strain HKU19) that stains Gram negative was subjected to characterisation by 16S rRNA gene sequencing, G+C content determination and electron microscopy. Results: Strain HKU19 was isolated from the blood culture of a 78-year-old woman with nosocomial bacteraemia. It was found to be an anaerobic, non-motile, pleomorphic, thin bacillus that stains Gram negative. It produces Indole and utilises glucose and mannose. Identifying the strain to the species level was not possible by conventional phenotypic tests and commercial identification systems. The G+C content of strain HKU19 was found to be 53.43 mol%. A similarity of 99.3% nucleotide identities was found between the 16S rRNA gene sequence of strain HKU19 and that of A colihominis WAL 14 565T, which was isolated from a human faecal specimen. In contrast with the original description of A colihominis, HKU19 was found to produce occasional oval, terminal spores, although the other phenotypic characteristics matched. Spores were also occasionally observed when the two previously reported strains were re-examined. Conclusions: Although the source of the bacteraemia in the patient cannot be determined, this report suggests that A colihominis is of clinical significance. Spore formation is proposed as an emended description of A colihominis.en_HK
dc.format.extent310755 bytes-
dc.format.extent711321 bytes-
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dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherB M J Publishing Group. The Journal's web site is located at http://jcp.bmjjournals.com/en_HK
dc.relation.ispartofJournal of Clinical Pathologyen_HK
dc.rightsJournal of Clinical Pathology. Copyright © B M J Publishing Group.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject.meshBacteremia-microbiologyen_HK
dc.subject.meshGram-Positive-Bacteria-classificationen_HK
dc.subject.meshGram-Positive-Bacterial-Infections-microbiologyen_HK
dc.titleBacteraemia caused by Anaerotruncus colihominis and emended description of the speciesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9746&volume=59&issue=7&spage=748&epage=752&date=2006&atitle=Bacteraemia+caused+by+Anaerotruncus+colihominis+and+emended+description+of+the+speciesen_HK
dc.identifier.emailLau, SKP:skplau@hkucc.hku.hken_HK
dc.identifier.emailWoo, PCY:pcywoo@hkucc.hku.hken_HK
dc.identifier.emailYuen, KY:kyyuen@hkucc.hku.hken_HK
dc.identifier.authorityLau, SKP=rp00486en_HK
dc.identifier.authorityWoo, PCY=rp00430en_HK
dc.identifier.authorityYuen, KY=rp00366en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1136/jcp.2005.031773en_HK
dc.identifier.pmid16467163en_HK
dc.identifier.pmcidPMC1860411-
dc.identifier.scopuseid_2-s2.0-33745924162en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33745924162&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue7en_HK
dc.identifier.spage748en_HK
dc.identifier.epage752en_HK
dc.identifier.isiWOS:000238592900016-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLau, SKP=7401596211en_HK
dc.identifier.scopusauthoridWoo, PCY=7201801340en_HK
dc.identifier.scopusauthoridWoo, GKS=7006485416en_HK
dc.identifier.scopusauthoridFung, AMY=7101926801en_HK
dc.identifier.scopusauthoridNgan, AHY=14037517900en_HK
dc.identifier.scopusauthoridSong, Y=7404919647en_HK
dc.identifier.scopusauthoridLiu, C=7409793056en_HK
dc.identifier.scopusauthoridSummanen, P=7006214412en_HK
dc.identifier.scopusauthoridFinegold, SM=35445034900en_HK
dc.identifier.scopusauthoridYuen, KY=36078079100en_HK

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