Main cariogenic microorganisms：a Meta-analysis / 中国组织工程研究

BACKGROUND:Scholars have carried out a lot of research on the main cariogenic microorganisms, but there is stil no comprehensive and systematic evaluation. OBJECTIVE:To perform an evidence-based medicine analysis on the six main cariogenic microorganisms. METHODS:Literature about microbial factors and age factors of caries disease etiology were retrieved, which were published from 2011 to 2014 in the Cochrane Library, EMBASE, PubMed, Wanfang, China Biology Medicine disc (CBMdisc), Chinese Journal Ful-text Database (CJFD) and VIP. Eligible studies were divided into two groups according to absorbance values: observation group (higher absorbance value) and control group (lower absorbance value). The probability of dental caries under the impact ofStreptococcus mutans, Lactobacilus microbe,Prevotela,Selenomonas,Capnocytophaga,Veilonelawere statisticaly analyzed using Meta-analysis. RESULTS AND CONCLUSION:Eight articles were included in result analysis. Odds ratio (OR) values refer to the statistical difference in the probability of dental caries under same pathogenic factors between two groups:OR > 1 indicates the incidence of dental caries is higher in the observation group than the control group, andOR < 1 suggests the incidence of dental caries is lower in the observation group than the control group. Meta-analysis results showStreptococcus mutans (OR=2.41),Lactobacilus microbe (OR=1.68),Prevotela (OR=2.75),Capnocytophaga (OR=1.98),Selenomonas(OR=2.38), indicating that the probability of dental caries is higher in the observation group than the control group, and these microorganisms are greatly correlated with the occurrence and development of dental caries;Veilonela (OR=0.45), indicating the probability of dental caries is lower in the observation group than the control group, andVeilonela has smal correlation with dental caries and only plays an important role in a certain development stage of dental caries.

Relationship between dental caries and salivary proteome by electrospray ionization ion-trap tandem mass spectrometry in children aged 6 to 8 years / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To explore the relationship between salivary proteome and dental caries and to promote the biomarker studies of dental caries susceptibility by comparing the salivary proteome of caries-active children and caries-free children with electrospray ionization ion-trap tandem mass spectrometry (ESI-MS/MS).</p><p><b>METHODS</b>Ten caries-active children and ten caries-free children were sampled. The salivary proteome of the two groups was studied, and the differential protein between the two groups was analyzed by ESI-MS/MS after sodium dodecyl sulfate polyacrylamide gel electrophoresis, filter-aided sample preparation, and liquid chromatography.</p><p><b>RESULTS</b>The concentration of salivary protein was higher in the caries-active group than in the caries-free group. The polypeptide counts of thecaries-active and caries-free groups were 602 and 481, which belonged to 286 and 227 proteins, respectively. The differential polypeptide count of the two groups was 361, and the differential protein count was 118. The detected proteins included matrix metalloproteinase-9 (MMP9), mucin-7 (MUC7), lactotransferrin (LTF), carbonic anhydrase 6 (CA6), azurocidin (AZU), and cold agglutinin.</p><p><b>CONCLUSION</b>The total salivary protein was higher in the caries-active group than in the caries-free group. The preliminary detection of differential proteins (MMP9, MUC7, LTF, CA6, AZU, and cold agglutinin) may lay some foundation for biomarker research of dental caries susceptibility.</p>