ABSTRACT
Abstract Objective: To explore the clinical pattern, host factors, and presentation of Streptococcus mutans related to caries incidence among children and adults visiting Universitas Airlangga dental clinic. Material and Methods: This was an observational study with a cross-sectional approach with 50 patients in each group of carious children (6-12 years) and adults (18-35 years). Dental decay samples were taken by sterile excavator, put in a BHI's transport medium, and directly incubated overnight at 37 ºC. The next day, they were sub-cultured microbiologically in Tryptone Yeast Cystine Sucrose Bacitracin (TYCSB) selective medium. Bacterial species and serogroups were examined by PCR. All patient's data were collected from medical records and direct observation. Results: Caries were mostly media type in both children and adults. Oral hygiene (OHIS) in children was higher than in adults but not significantly different according to their DMFT. The highest scores for decay, missed and filled teeth were 16, 8 and 7, with an average of 6.82, 1.22 and 0.63, considered quite high. Conclusion: The prevalence of S. mutans was higher in children's caries than in adults, but among the adult patients the co-incidence of S. mutans and S. sobrinus was associated with higher DMFT. The mutans serotypes e, f, and d were more prevalent among children than adults.
Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Streptococcus mutans/immunology , Oral Hygiene Index , Oral Health/education , Streptococcus sobrinus/immunology , Dental Caries/prevention & control , Oral Hygiene/methods , Chi-Square Distribution , DMF Index , Cross-Sectional Studies/methodsABSTRACT
A total of 50 clinical strains of methicillin-resistant Staphylococcus aureus (MRSA) were collected from Kobe University Hospital in 2003. Molecular typing of SCCmec was performed by multiplex polymerase chain reaction (PCR) and the presence of six genes (vraR, vraG, vraA, vraF, fruA, and fruB) associated with vancomycin (VCM) resistance was examined by simple PCR analysis. Out of 50 MRSA strains isolated 47 strains contained Type II SCCmec and the remaining contained Type IV SCCmec. Thirty seven strains contained pUB110 plasmid. VraA was present in 69% of the strains, vraF in 10%, vraG in 53%, and vraR in 16%. Noteworthy, strains without pUB110 contained vraR in relatively higher frequency (31%) compared with strains with pUB110 (11%).
Subject(s)
Bacterial Proteins/drug effects , Bacterial Typing Techniques , Chromosomes, Bacterial , Hospitals, University , Humans , Japan , Methicillin/pharmacology , Methicillin Resistance/genetics , Microbial Sensitivity Tests , Molecular Sequence Data , Polymerase Chain Reaction , Staphylococcal Infections/drug therapy , Staphylococcus aureus/drug effectsABSTRACT
We describe the characterization of Salmonella enterica serovar Typhi, isolated from the blood of patients with perforation and non-perforation typhoid fever, by a combination of conventional microbiological tests, 16S rRNA gene sequencing, and flagellin gene and CDP-tyvelose epimerase (rfbE) gene sequencing. The 16S rRNA gene sequencing showed that there were four base mutations from perforation samples and only three from non-perforation samples. These findings indicated that the isolates were a strain of Salmonella enterica. The flagellin gene sequences from the two groups were 100% identical to that of the H1-d flagellin gene of serovar Typhi. Sequences of the rfbE from both groups were also 100% identical.