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Article: Streptococcus sinensis sp. nov., a novel species isolated from a patient with infective endocarditis

TitleStreptococcus sinensis sp. nov., a novel species isolated from a patient with infective endocarditis
Authors
Issue Date2002
PublisherAmerican Society for Microbiology.
Citation
Journal Of Clinical Microbiology, 2002, v. 40 n. 3, p. 805-810 How to Cite?
AbstractA bacterium was isolated from the blood culture of a patient with infective endocarditis. The cells were facultative anaerobic, nonsporulating, gram-positive cocci arranged in chains. The bacterium grows on sheep blood agar as alpha-hemolytic, gray colonies of 0.5 to 1 mm in diameter after 24 h of incubation at 37°C in ambient air. Growth also occurs in 10 or 40% bile and on bile esculin agar but not in 6% NaCl. No enhancement of growth is observed in 5% CO2. It is nongroupable with Lancefield groups A, B, C, D, F, or G antisera and is resistant to optochin and bacitracin. The organism is aflagellated and is nonmotile at both 25 and 37°C. It is Voges-Proskauer test positive. It produces leucine arylamidase and β-glucosidase but not catalase, urease, lysine decarboxylase, or ornithine decarboxylase. It hydrolyzes esculin and arginine. It utilizes glucose, lactose, salicin, sucrose, pullulan, trehalose, cellobiose, hemicellulase, mannose, maltose, and starch. 16S rRNA gene sequencing showed that there were 3.6, 3.7, 4.3, 4.7, and 5.9% differences between the 16S rRNA gene sequence of the bacterium and those of Streptococcus gordonii, Streptococcus intermedius, Streptococcus constellatus, Streptococcus sanguis, and Streptococcus anginosus, respectively. The G+C content of it (mean ± standard deviation) was 53.0% ± 2.9%. Based on phylogenetic affiliation, it belongs to the mitis or anginosus group of Streptococcus. For these reasons a new species, Streptococcus sinensis sp. nov., is proposed, for which HKU4 is the type strain. Further studies should be performed to ascertain the potential of this bacterium to become an emerging cause of infective endocarditis.
Persistent Identifierhttp://hdl.handle.net/10722/49223
ISSN
2015 Impact Factor: 3.631
2015 SCImago Journal Rankings: 2.151
PubMed Central ID
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWoo, PCYen_HK
dc.contributor.authorTam, DMWen_HK
dc.contributor.authorLeung, KWen_HK
dc.contributor.authorLau, SKPen_HK
dc.contributor.authorTeng, JLLen_HK
dc.contributor.authorWong, MKMen_HK
dc.contributor.authorYuen, KYen_HK
dc.date.accessioned2008-06-12T06:37:03Z-
dc.date.available2008-06-12T06:37:03Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of Clinical Microbiology, 2002, v. 40 n. 3, p. 805-810en_HK
dc.identifier.issn0095-1137en_HK
dc.identifier.urihttp://hdl.handle.net/10722/49223-
dc.description.abstractA bacterium was isolated from the blood culture of a patient with infective endocarditis. The cells were facultative anaerobic, nonsporulating, gram-positive cocci arranged in chains. The bacterium grows on sheep blood agar as alpha-hemolytic, gray colonies of 0.5 to 1 mm in diameter after 24 h of incubation at 37°C in ambient air. Growth also occurs in 10 or 40% bile and on bile esculin agar but not in 6% NaCl. No enhancement of growth is observed in 5% CO2. It is nongroupable with Lancefield groups A, B, C, D, F, or G antisera and is resistant to optochin and bacitracin. The organism is aflagellated and is nonmotile at both 25 and 37°C. It is Voges-Proskauer test positive. It produces leucine arylamidase and β-glucosidase but not catalase, urease, lysine decarboxylase, or ornithine decarboxylase. It hydrolyzes esculin and arginine. It utilizes glucose, lactose, salicin, sucrose, pullulan, trehalose, cellobiose, hemicellulase, mannose, maltose, and starch. 16S rRNA gene sequencing showed that there were 3.6, 3.7, 4.3, 4.7, and 5.9% differences between the 16S rRNA gene sequence of the bacterium and those of Streptococcus gordonii, Streptococcus intermedius, Streptococcus constellatus, Streptococcus sanguis, and Streptococcus anginosus, respectively. The G+C content of it (mean ± standard deviation) was 53.0% ± 2.9%. Based on phylogenetic affiliation, it belongs to the mitis or anginosus group of Streptococcus. For these reasons a new species, Streptococcus sinensis sp. nov., is proposed, for which HKU4 is the type strain. Further studies should be performed to ascertain the potential of this bacterium to become an emerging cause of infective endocarditis.en_HK
dc.format.extent386 bytes-
dc.format.mimetypetext/html-
dc.languageengen_HK
dc.publisherAmerican Society for Microbiology.en_HK
dc.relation.ispartofJournal of Clinical Microbiologyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Clinical Microbiology. Copyright © American Society for Microbiology.en_HK
dc.rightsCopyright © American Society for Microbiology, Journal of Clinical Microbiology, 2002, v. 40 n. 3, p. 805-810en_HK
dc.subject.meshEndocarditis, Bacterial - microbiologyen_HK
dc.subject.meshStreptococcus - classification - genetics - isolation & purificationen_HK
dc.subject.meshMolecular Sequence Dataen_HK
dc.subject.meshPhenotypeen_HK
dc.subject.meshPhylogenyen_HK
dc.titleStreptococcus sinensis sp. nov., a novel species isolated from a patient with infective endocarditisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0095-1137&volume=40&issue=3&spage=805&epage=810&date=2002&atitle=Streptococcus+sinensis+sp.+nov.,+a+novel+species+isolated+from+a+patient+with+infective+endocarditisen_HK
dc.identifier.emailWoo, PCY:pcywoo@hkucc.hku.hken_HK
dc.identifier.emailLau, SKP:skplau@hkucc.hku.hken_HK
dc.identifier.emailTeng, JLL:llteng@hku.hken_HK
dc.identifier.emailYuen, KY:kyyuen@hkucc.hku.hken_HK
dc.identifier.authorityWoo, PCY=rp00430en_HK
dc.identifier.authorityLau, SKP=rp00486en_HK
dc.identifier.authorityTeng, JLL=rp00277en_HK
dc.identifier.authorityYuen, KY=rp00366en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1128/JCM.40.3.805-810.2002en_HK
dc.identifier.pmid11880397-
dc.identifier.pmcidPMC120286en_HK
dc.identifier.scopuseid_2-s2.0-0036197561en_HK
dc.identifier.hkuros74417-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036197561&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue3en_HK
dc.identifier.spage805en_HK
dc.identifier.epage810en_HK
dc.identifier.isiWOS:000174238600012-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWoo, PCY=7201801340en_HK
dc.identifier.scopusauthoridTam, DMW=7006053712en_HK
dc.identifier.scopusauthoridLeung, KW=7401860831en_HK
dc.identifier.scopusauthoridLau, SKP=7401596211en_HK
dc.identifier.scopusauthoridTeng, JLL=7202560229en_HK
dc.identifier.scopusauthoridWong, MKM=35123119500en_HK
dc.identifier.scopusauthoridYuen, KY=36078079100en_HK

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