Clonal diversity of Streptococcus mitis biovar 1 isolates from the oral cavity of human neonates.
Identifieur interne : 001502 ( Pmc/Corpus ); précédent : 001501; suivant : 001503Clonal diversity of Streptococcus mitis biovar 1 isolates from the oral cavity of human neonates.
Auteurs : S. Fitzsimmons ; M. Evans ; C. Pearce ; M J Sheridan ; R. Wientzen ; G. Bowden ; M F ColeSource :
- Clinical and Diagnostic Laboratory Immunology [ 1071-412X ] ; 1996.
Abstract
The clonal diversity of 101 isolates of the pioneer bacterium Streptococcus mitis biovar 1 obtained from the oral cavities of 40 human neonates 1 to 3 days, 2 weeks, and 1 month postpartum was examined by using rRNA gene restriction patterns. There was a high degree of genetic diversity, with the 101 isolates comprising 93 unique PvuII ribotypes. There were eight identical pairs of ribotype patterns, and seven of the eight pairs were obtained from individual neonates. Only one identical pair comprised isolates obtained from different neonates. In all but two cases, isolates with matching ribotypes were obtained at one visit. Two pairs of isolates with matching ribotype patterns were obtained from neonates on successive visits. The ribotype patterns of the isolates were examined by cluster analysis. The isolates forming each cluster were very similar, yet each cluster was well separated from its neighbors. When several isolates were obtained from individual neonates at a particular visit, in some instances they were contained in a single cluster, whereas in other cases each isolate was contained in a separate cluster. Isolates obtained from individual neonates on successive visits tended to be contained in different clusters. This high degree of diversity, which has been observed in other mucosal commensal bacteria, may serve as a mechanism for avoiding immune elimination of these bacteria.
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PubMed: 8877128
PubMed Central: 170399
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PMC:170399Le document en format XML
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<author><name sortKey="Fitzsimmons, S" sort="Fitzsimmons, S" uniqKey="Fitzsimmons S" first="S" last="Fitzsimmons">S. Fitzsimmons</name>
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<author><name sortKey="Evans, M" sort="Evans, M" uniqKey="Evans M" first="M" last="Evans">M. Evans</name>
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<author><name sortKey="Pearce, C" sort="Pearce, C" uniqKey="Pearce C" first="C" last="Pearce">C. Pearce</name>
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<author><name sortKey="Sheridan, M J" sort="Sheridan, M J" uniqKey="Sheridan M" first="M J" last="Sheridan">M J Sheridan</name>
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<author><name sortKey="Wientzen, R" sort="Wientzen, R" uniqKey="Wientzen R" first="R" last="Wientzen">R. Wientzen</name>
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<author><name sortKey="Bowden, G" sort="Bowden, G" uniqKey="Bowden G" first="G" last="Bowden">G. Bowden</name>
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<author><name sortKey="Cole, M F" sort="Cole, M F" uniqKey="Cole M" first="M F" last="Cole">M F Cole</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Clonal diversity of Streptococcus mitis biovar 1 isolates from the oral cavity of human neonates.</title>
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<author><name sortKey="Wientzen, R" sort="Wientzen, R" uniqKey="Wientzen R" first="R" last="Wientzen">R. Wientzen</name>
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<series><title level="j">Clinical and Diagnostic Laboratory Immunology</title>
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<front><div type="abstract" xml:lang="en"><p>The clonal diversity of 101 isolates of the pioneer bacterium Streptococcus mitis biovar 1 obtained from the oral cavities of 40 human neonates 1 to 3 days, 2 weeks, and 1 month postpartum was examined by using rRNA gene restriction patterns. There was a high degree of genetic diversity, with the 101 isolates comprising 93 unique PvuII ribotypes. There were eight identical pairs of ribotype patterns, and seven of the eight pairs were obtained from individual neonates. Only one identical pair comprised isolates obtained from different neonates. In all but two cases, isolates with matching ribotypes were obtained at one visit. Two pairs of isolates with matching ribotype patterns were obtained from neonates on successive visits. The ribotype patterns of the isolates were examined by cluster analysis. The isolates forming each cluster were very similar, yet each cluster was well separated from its neighbors. When several isolates were obtained from individual neonates at a particular visit, in some instances they were contained in a single cluster, whereas in other cases each isolate was contained in a separate cluster. Isolates obtained from individual neonates on successive visits tended to be contained in different clusters. This high degree of diversity, which has been observed in other mucosal commensal bacteria, may serve as a mechanism for avoiding immune elimination of these bacteria.</p>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Clin Diagn Lab Immunol</journal-id>
<journal-title>Clinical and Diagnostic Laboratory Immunology</journal-title>
<issn pub-type="ppub">1071-412X</issn>
<issn pub-type="epub">1098-6588</issn>
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<article-meta><article-id pub-id-type="pmid">8877128</article-id>
<article-id pub-id-type="pmc">170399</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Clonal diversity of Streptococcus mitis biovar 1 isolates from the oral cavity of human neonates.</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Fitzsimmons</surname>
<given-names>S</given-names>
</name>
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<contrib contrib-type="author"><name><surname>Evans</surname>
<given-names>M</given-names>
</name>
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<contrib contrib-type="author"><name><surname>Pearce</surname>
<given-names>C</given-names>
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<contrib contrib-type="author"><name><surname>Sheridan</surname>
<given-names>M J</given-names>
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<contrib contrib-type="author"><name><surname>Wientzen</surname>
<given-names>R</given-names>
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<contrib contrib-type="author"><name><surname>Bowden</surname>
<given-names>G</given-names>
</name>
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<contrib contrib-type="author"><name><surname>Cole</surname>
<given-names>M F</given-names>
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<aff>Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC 20007, USA.</aff>
<pub-date pub-type="ppub"><month>9</month>
<year>1996</year>
</pub-date>
<volume>3</volume>
<issue>5</issue>
<fpage>517</fpage>
<lpage>522</lpage>
<abstract><p>The clonal diversity of 101 isolates of the pioneer bacterium Streptococcus mitis biovar 1 obtained from the oral cavities of 40 human neonates 1 to 3 days, 2 weeks, and 1 month postpartum was examined by using rRNA gene restriction patterns. There was a high degree of genetic diversity, with the 101 isolates comprising 93 unique PvuII ribotypes. There were eight identical pairs of ribotype patterns, and seven of the eight pairs were obtained from individual neonates. Only one identical pair comprised isolates obtained from different neonates. In all but two cases, isolates with matching ribotypes were obtained at one visit. Two pairs of isolates with matching ribotype patterns were obtained from neonates on successive visits. The ribotype patterns of the isolates were examined by cluster analysis. The isolates forming each cluster were very similar, yet each cluster was well separated from its neighbors. When several isolates were obtained from individual neonates at a particular visit, in some instances they were contained in a single cluster, whereas in other cases each isolate was contained in a separate cluster. Isolates obtained from individual neonates on successive visits tended to be contained in different clusters. This high degree of diversity, which has been observed in other mucosal commensal bacteria, may serve as a mechanism for avoiding immune elimination of these bacteria.</p>
</abstract>
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</front>
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