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Colonization of Streptococcus mutans and Streptococcus sobrinus genotypes and caries development in children to mothers harboring both species.

Artikel i vetenskaplig tidskrift
Författare Birgitta Lindquist
Claes-Göran Emilson
Publicerad i Caries research
Volym 38
Nummer/häfte 2
Sidor 95-103
ISSN 0008-6568
Publiceringsår 2004
Publicerad vid Odontologiska institutionen, Avdelningen för cariologi
Sidor 95-103
Språk en
Länkar dx.doi.org/10.1159/000075932
Ämnesord Child, Child, Preschool, DMF Index, Dental Caries, microbiology, Dental Plaque, microbiology, Disease Transmission, Vertical, Female, Genotype, Humans, Infant, Longitudinal Studies, Male, Molar, microbiology, Mother-Child Relations, Retrospective Studies, Saliva, microbiology, Streptococcus mutans, classification, physiology, Streptococcus sobrinus, classification, physiology, Tongue, microbiology, Tooth, Deciduous, microbiology
Ämneskategorier Odontologi, Cariologi

Sammanfattning

The major route of early acquisition of mutans streptococci in humans is a vertical transmission from mother to child. The purpose of this longitudinal study was to examine the acquisition, distribution and persistence of Streptococcus mutans and Streptococcus sobrinus in children whose mothers harbored both species and to study the caries incidence in relation to colonization of these bacteria. Fifteen mother-child pairs were followed during the child's first 7 years. Stimulated salivary samples were taken from the mothers and the children. Plaque samples were also collected from the teeth and the tongue of the children. The samples were analyzed by cultivating techniques together with genomic fingerprinting and hybridizing. The caries experience was evaluated on the sampling occasions and retrospectively using the records of caries registrations from the community clinics. During the 7-year period 10 of the 15 children acquired mutans streptococci. Only 4 of them were colonized by both S. mutans and S. sobrinus despite the fact that their mothers harbored both species. In 2 of the children S. sobrinus was found later than S. mutans. A total of 26 genotypes were found in the children and 9 of them were identical to their mothers. New genotypes and a gain-loss pattern were noted especially in the children but also in their mothers. The groups of teeth first positive for the two species were the deciduous molars. The caries experience was low during the study period with 8 children showing no caries.

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