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Article: Oral colonisation by aerobic and facultatively anaerobic gram-negative rods and yeast in Tibetans living in Lhasa

TitleOral colonisation by aerobic and facultatively anaerobic gram-negative rods and yeast in Tibetans living in Lhasa
Authors
KeywordsEnteric rods
Oral microbiology
Stenotrophomonas maltophilia
Tibetans
Yeasts
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/archoralbio
Citation
Archives Of Oral Biology, 2003, v. 48 n. 2, p. 117-123 How to Cite?
AbstractSample groups of children (n = 50) and adults (n = 38) were selected from pools of 207 children, (11-13-year olds from two primary schools) and 94 adults (25-44-year olds from four governmental agencies) who were the subjects of an oral health survey among Tibetans living in Lhasa, Tibet Autonomous Region. Mean ages of the study groups of children (38% females) and adults (61% females) were 11.6 ± 0.9 and 37.1 ± 6.1 years, respectively. All had lived in Tibet since birth. Oral rinse samples were selective cultured to isolate, quantify and speciate aerobic and facultatively anaerobic Gram-negative rods (using the API 20E kit) and yeasts (using API 20C AUX and API ZYM kits). For children, the isolation rates for oral coliform bacteria and yeasts were 84 and 14%, respectively, for adults, the respective rates were 26 and 40%. The corresponding quantities of coliforms/yeasts for children and adults were 0.4 ± 1.6 × 103 c.f.u./15.8 ± 72.3 and 0.2 ± 0.6 × 103 c.f.u./57.2 ± 137.5 c.f.u. per millilitre oral rinse, respectively. Aerobic and facultatively anaerobic Gram-negative rods and Stenotrophomonas maltophilia, a free-Living saprophytic and ubiquitous bacterial species of wide geographic distribution, were significantly more frequently recovered from the children's oral rinses. The isolation rates of facultatively anaerobic Gram-negative rods in adults and yeasts in both groups were similar to those found in similar cohorts from southern China in earlier studies. Randomly amplified polymeric DNA analysis showed that the S. maltophilia spp. isolated from children were of several different clonal types and were school specific. This study shows that the colonisation rate of facultatively anaerobic Gram-negative rods in adults and yeasts in both groups are similar to those in populations living at lower altitudes, the native young, urban Tibetans appear to exhibit a high oral carriage rate of S. maltophilia spp. © 2003 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/55456
ISSN
2015 Impact Factor: 1.733
2015 SCImago Journal Rankings: 0.713
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, WKen_HK
dc.contributor.authorYau, JYYen_HK
dc.contributor.authorCheung, BPKen_HK
dc.contributor.authorJin, LJen_HK
dc.contributor.authorZee, KYen_HK
dc.contributor.authorLo, ECMen_HK
dc.contributor.authorSamaranayake, LPen_HK
dc.contributor.authorCorbet, EFen_HK
dc.date.accessioned2009-08-06T03:38:00Z-
dc.date.available2009-08-06T03:38:00Z-
dc.date.issued2003en_HK
dc.identifier.citationArchives Of Oral Biology, 2003, v. 48 n. 2, p. 117-123en_HK
dc.identifier.issn0003-9969en_HK
dc.identifier.urihttp://hdl.handle.net/10722/55456-
dc.description.abstractSample groups of children (n = 50) and adults (n = 38) were selected from pools of 207 children, (11-13-year olds from two primary schools) and 94 adults (25-44-year olds from four governmental agencies) who were the subjects of an oral health survey among Tibetans living in Lhasa, Tibet Autonomous Region. Mean ages of the study groups of children (38% females) and adults (61% females) were 11.6 ± 0.9 and 37.1 ± 6.1 years, respectively. All had lived in Tibet since birth. Oral rinse samples were selective cultured to isolate, quantify and speciate aerobic and facultatively anaerobic Gram-negative rods (using the API 20E kit) and yeasts (using API 20C AUX and API ZYM kits). For children, the isolation rates for oral coliform bacteria and yeasts were 84 and 14%, respectively, for adults, the respective rates were 26 and 40%. The corresponding quantities of coliforms/yeasts for children and adults were 0.4 ± 1.6 × 103 c.f.u./15.8 ± 72.3 and 0.2 ± 0.6 × 103 c.f.u./57.2 ± 137.5 c.f.u. per millilitre oral rinse, respectively. Aerobic and facultatively anaerobic Gram-negative rods and Stenotrophomonas maltophilia, a free-Living saprophytic and ubiquitous bacterial species of wide geographic distribution, were significantly more frequently recovered from the children's oral rinses. The isolation rates of facultatively anaerobic Gram-negative rods in adults and yeasts in both groups were similar to those found in similar cohorts from southern China in earlier studies. Randomly amplified polymeric DNA analysis showed that the S. maltophilia spp. isolated from children were of several different clonal types and were school specific. This study shows that the colonisation rate of facultatively anaerobic Gram-negative rods in adults and yeasts in both groups are similar to those in populations living at lower altitudes, the native young, urban Tibetans appear to exhibit a high oral carriage rate of S. maltophilia spp. © 2003 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/archoralbioen_HK
dc.relation.ispartofArchives of Oral Biologyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEnteric rodsen_HK
dc.subjectOral microbiologyen_HK
dc.subjectStenotrophomonas maltophiliaen_HK
dc.subjectTibetansen_HK
dc.subjectYeastsen_HK
dc.subject.meshGram-Negative Facultatively Anaerobic Rods - isolation & purificationen_HK
dc.subject.meshGram-Positive Rods - isolation & purificationen_HK
dc.subject.meshMouth - microbiologyen_HK
dc.subject.meshStenotrophomonas maltophilia - isolation & purificationen_HK
dc.subject.meshPseudomonas - isolation & purificationen_HK
dc.titleOral colonisation by aerobic and facultatively anaerobic gram-negative rods and yeast in Tibetans living in Lhasaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-9969&volume=48&issue=2&spage=117&epage=123&date=2003&atitle=Oral+colonisation+by+aerobic+and+facultatively+anaerobic+Gram-negative+rods+and+yeast+in+Tibetans+living+in+Lhasaen_HK
dc.identifier.emailLeung, WK:ewkleung@hkucc.hku.hken_HK
dc.identifier.emailJin, LJ:ljjin@hkucc.hku.hken_HK
dc.identifier.emailLo, ECM:hrdplcm@hkucc.hku.hken_HK
dc.identifier.emailSamaranayake, LP:lakshman@hku.hken_HK
dc.identifier.emailCorbet, EF:efcorbet@hku.hken_HK
dc.identifier.authorityLeung, WK=rp00019en_HK
dc.identifier.authorityJin, LJ=rp00028en_HK
dc.identifier.authorityLo, ECM=rp00015en_HK
dc.identifier.authoritySamaranayake, LP=rp00023en_HK
dc.identifier.authorityCorbet, EF=rp00005en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/S0003-9969(02)00201-7en_HK
dc.identifier.pmid12642230-
dc.identifier.scopuseid_2-s2.0-0037314271en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037314271&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume48en_HK
dc.identifier.issue2en_HK
dc.identifier.spage117en_HK
dc.identifier.epage123en_HK
dc.identifier.isiWOS:000182613500004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLeung, WK=25224691800en_HK
dc.identifier.scopusauthoridYau, JYY=7102167568en_HK
dc.identifier.scopusauthoridCheung, BPK=7103294773en_HK
dc.identifier.scopusauthoridJin, LJ=7403328850en_HK
dc.identifier.scopusauthoridZee, KY=6603722366en_HK
dc.identifier.scopusauthoridLo, ECM=7101705982en_HK
dc.identifier.scopusauthoridSamaranayake, LP=7102761002en_HK
dc.identifier.scopusauthoridCorbet, EF=35609873200en_HK

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