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Braga,Miula Portelinha; Piovesan,Augusta; Valarini,Natália; Maciel,Sandra Mara; Andrade,Flaviana Bombarda de; Poli-Frederico,Regina Célia. |
The objective of this study was to analyze the genotypic diversity, frequency of serotypes and the detection of mutacins from Streptococcus mutans isolates in caries-free and caries-active individuals.A total of 260 S. mutans isolated from 28 individuals with and without dental caries were subjected to AP-PCR and PCR screening of glucosyltransferase B, mutacin and serotype genes, which showed the presence of. 70 different genotypes. There was no statistically significant association between the presence of genes for serotypes and mutacins with dental caries. However, there was a statistically significant and a strong association between the higher genotypic diversity in the subjects with caries (r = 0.72, p = 0.001). There was an increase in the number of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dental caries; Genotypic diversity; Mutacin; Serotype; Streptococcus mutans. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200009 |
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Saavedra,Nicolás; Barrientos,Leticia; Herrera,Christian L; Alvear,Marysol; Montenegro,Gloria; Salazar,Luis A. |
Dental caries is an infectious disease of worldwide public health concern. Among the bacteria involved in this pathology are Streptococcus mutans, Streptococcus sobrinus and organisms belonging to the genera Actinomyces and Lactobacillus. The pharmaceutical industry is focussing on the discovery of new antibacterial products after a greater resistance to those already known. Propolis has been used since ancient times, so their effects against various microorganisms have been already investigated. In our study, we evaluated the antimicrobial effect of 6 commercial ethanolic propolis extracts on the bacterium Lactobacillus fermentum. This bacterium was isolated after its identification by Polymerase Chain Reaction using species specific primers, and after... |
Tipo: Journal article |
Palavras-chave: Lactobacillus fermentum; Dental caries; Propolis; Antibacterial activity. |
Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100011 |
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