Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions
The oral cavity harbors several Streptococcus mutans genotypes, which could present distinct virulence properties. However, little is known about the diversity and virulence traits of S. mutans genotypes isolated in vivo under controlled conditions of high cariogenic challenge. This study evaluated the genotypic diversity of S. mutans isolated from dental biofilms formed in vivo under sucrose exposure, as well as their acidogenicity and aciduricity. To form biofilms, subjects rinsed their mouths with distilled water or sucrose solution 8 times/day for 3 days. S. mutans collected from saliva and biofilms were genotyped by arbitrarily-primed PCR. Genotypes identified in the biofilms were evaluated regarding their ability to lower the suspension pH through glycolysis and their acid susceptibility and F-ATPase activity. Most subjects harbored only one genotype in saliva, which was detected in almost all biofilm samples at high proportions. Genotypes isolated only in the presence of sucrose had higher acidogenicity than those isolated only in the presence of water. Genotypes from biofilms formed with sucrose were more aciduric after 30 and 60 min of incubation at pH 2.8 and 5.0, respectively. The present results suggest that biofilms formed under high cariogenic conditions may harbor more aciduric and acidogenic S. mutans genotypes.
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Fundação Odontológica de Ribeirão Preto
2011
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oai:scielo:S0103-644020110004000012011-09-09Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditionsArthur,Rodrigo AlexCury,Altair Antoninha Del BelGraner,Renata Oliveira MattosRosalen,Pedro LuizVale,Gláuber CamposLeme,Adriana Franco PaesCury,Jaime AparecidoTabchoury,Cínthia Pereira Machado dental biofilm genotypic diversity Streptococcus mutans sucrose The oral cavity harbors several Streptococcus mutans genotypes, which could present distinct virulence properties. However, little is known about the diversity and virulence traits of S. mutans genotypes isolated in vivo under controlled conditions of high cariogenic challenge. This study evaluated the genotypic diversity of S. mutans isolated from dental biofilms formed in vivo under sucrose exposure, as well as their acidogenicity and aciduricity. To form biofilms, subjects rinsed their mouths with distilled water or sucrose solution 8 times/day for 3 days. S. mutans collected from saliva and biofilms were genotyped by arbitrarily-primed PCR. Genotypes identified in the biofilms were evaluated regarding their ability to lower the suspension pH through glycolysis and their acid susceptibility and F-ATPase activity. Most subjects harbored only one genotype in saliva, which was detected in almost all biofilm samples at high proportions. Genotypes isolated only in the presence of sucrose had higher acidogenicity than those isolated only in the presence of water. Genotypes from biofilms formed with sucrose were more aciduric after 30 and 60 min of incubation at pH 2.8 and 5.0, respectively. The present results suggest that biofilms formed under high cariogenic conditions may harbor more aciduric and acidogenic S. mutans genotypes.info:eu-repo/semantics/openAccessFundação Odontológica de Ribeirão PretoBrazilian Dental Journal v.22 n.4 20112011-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402011000400001en10.1590/S0103-64402011000400001 |
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Arthur,Rodrigo Alex Cury,Altair Antoninha Del Bel Graner,Renata Oliveira Mattos Rosalen,Pedro Luiz Vale,Gláuber Campos Leme,Adriana Franco Paes Cury,Jaime Aparecido Tabchoury,Cínthia Pereira Machado |
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Arthur,Rodrigo Alex Cury,Altair Antoninha Del Bel Graner,Renata Oliveira Mattos Rosalen,Pedro Luiz Vale,Gláuber Campos Leme,Adriana Franco Paes Cury,Jaime Aparecido Tabchoury,Cínthia Pereira Machado Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
author_facet |
Arthur,Rodrigo Alex Cury,Altair Antoninha Del Bel Graner,Renata Oliveira Mattos Rosalen,Pedro Luiz Vale,Gláuber Campos Leme,Adriana Franco Paes Cury,Jaime Aparecido Tabchoury,Cínthia Pereira Machado |
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Arthur,Rodrigo Alex |
title |
Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
title_short |
Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
title_full |
Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
title_fullStr |
Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
title_full_unstemmed |
Genotypic and phenotypic analysis of S. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
title_sort |
genotypic and phenotypic analysis of s. mutans isolated from dental biofilms formed in vivo under high cariogenic conditions |
description |
The oral cavity harbors several Streptococcus mutans genotypes, which could present distinct virulence properties. However, little is known about the diversity and virulence traits of S. mutans genotypes isolated in vivo under controlled conditions of high cariogenic challenge. This study evaluated the genotypic diversity of S. mutans isolated from dental biofilms formed in vivo under sucrose exposure, as well as their acidogenicity and aciduricity. To form biofilms, subjects rinsed their mouths with distilled water or sucrose solution 8 times/day for 3 days. S. mutans collected from saliva and biofilms were genotyped by arbitrarily-primed PCR. Genotypes identified in the biofilms were evaluated regarding their ability to lower the suspension pH through glycolysis and their acid susceptibility and F-ATPase activity. Most subjects harbored only one genotype in saliva, which was detected in almost all biofilm samples at high proportions. Genotypes isolated only in the presence of sucrose had higher acidogenicity than those isolated only in the presence of water. Genotypes from biofilms formed with sucrose were more aciduric after 30 and 60 min of incubation at pH 2.8 and 5.0, respectively. The present results suggest that biofilms formed under high cariogenic conditions may harbor more aciduric and acidogenic S. mutans genotypes. |
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Fundação Odontológica de Ribeirão Preto |
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2011 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402011000400001 |
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