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Detection of oral streptococci with collagen‐binding properties in saliva specimens from mothers and their children
Author(s) -
NOMURA RYOTA,
NAKA SHUHEI,
NAKANO KAZUHIKO,
TANIGUCHI NAHO,
MATSUMOTO MICHIYO,
OOSHIMA TAKASHI
Publication year - 2010
Publication title -
international journal of paediatric dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.183
H-Index - 62
eISSN - 1365-263X
pISSN - 0960-7439
DOI - 10.1111/j.1365-263x.2010.01047.x
Subject(s) - streptococcus mutans , saliva , streptococcus salivarius , oral cavity , microbiology and biotechnology , medicine , dentistry , bacteria , biology , genetics
International Journal of Paediatric Dentistry 2010; 20: 254–260Background. Approximately 10–20% of Streptococcus mutans strains have been reported to possess collagen‐binding properties, whereas other species in the oral cavity with those properties remain to be elucidated. Aim. To identify strains with collagen‐binding properties and analyse their characteristics in comparison with S. mutans . Design. A total of 110 expectorated saliva specimens were collected from 55 pairs of mothers and their children. Bacterial strains with collagen‐binding properties were isolated and the species specified. In addition, strains with collagen‐binding properties isolated from mother–child pairs were analysed using molecular biological approaches. Results. The detection frequency of strains with collagen‐binding properties was shown to be 40.9%, among which S. salivarius was the most frequently detected, followed by S. mutans . The collagen‐binding activity of the S. mutans group was the highest, followed by S. salivarius . In addition, S. mutans and S. salivarius strains from 3 and 1 mother–child pairs, respectively, were shown to be the same clones. Conclusions. Our results indicate that S. mutans and S. salivarius are major species with collagen‐binding properties in the oral cavity, and that strains with such properties may be related to mother–child transmission.