ABSTRACT
OBJECTIVES@#This study aimed to analyze the bacteria in dental caries and establish an optimized dental-ca-ries diagnosis model based on 16S ribosomal RNA (rRNA) data of oral flora.@*METHODS@#We searched the public databa-ses of microbiomes including NCBI, MG-RAST, EMBL-EBI, and QIITA and collected data involved in the relevant research on human oral microbiomes worldwide. The samples in the caries dataset (1 703) were compared with healthy ones (20 540) by using the microbial search engine (MSE) to obtain the microbiome novelty score (MNS) and construct a caries diagnosis model based on this index. Nonparametric multivariate ANOVA was used to analyze and compare the impact of different host factors on the oral flora MNS, and the model was optimized by controlling related factors. Finally, the effect of the model was evaluated by receiver operating characteristic (ROC) curve analysis.@*RESULTS@#1) The oral microbiota distribution obviously differed among people with various oral-health statuses, and the species richness and species diversity index decreased. 2) ROC curve was used to evaluate the caries data set, and the area under ROC curve was AUC=0.67. 3) Among the five hosts' factors including caries status, country, age, decayed missing filled tooth (DMFT) indices, and sampling site displayed the strongest effect on MNS of samples (P=0.001). 4) The AUC of the model was 0.87, 0.74, 0.74, and 0.75 in high caries, medium caries, low caries samples in Chinese children, and mixed dental plaque samples after controlling host factors, respectively.@*CONCLUSIONS@#The model based on the analysis of 16S rRNA data of oral flora had good diagnostic efficiency.
Subject(s)
Humans , Child , Bacteria/genetics , Dental Caries/microbiology , Dental Caries Susceptibility , Microbiota/genetics , RNA, Ribosomal, 16SABSTRACT
AIM: To observe the ameliorative effect of Puerarin Injection on blood hyperviscosity in acute blood-stasis model rats. METHODS: The acute blood-stasis model rats were made by injected adrenaline repeatedly and soaked in ice water. The markers of whole blood viscosity and plasm viscosity in the rats were measured with Auto-Viscometer. RESULTS: The whole blood viscosity and plasm viscosity was significantly raised in the acute blood-stasis model rats and Puerarin Injection had ameliorative effects on them. CONCLUSION: Puerarin Injection can ameliorate the blood-high-viscosity in rats of blood-stasis model.
ABSTRACT
OBJECTIVE:To study the intervention mechanism of puerarin on expressions of HSP70 and Fas proteinum in rats with acute cerebral ischemia injury.METHODS:12 rats with acute cerebral ischemia injury were randomly divided into ischemia control group(saline) and puerarin treated control group,with 6 in each group,each rat under took own control by ischemia side(exp.group) and non-ischemia side(control group);And rats with acute cerebral ischemia injury were randomly divided into control group (saline,ischemia side),puerarin treated control group and normal group (non-ischemia side),with 6 in each group.And then the expressions of HSP70 and Fas proteinum is determined by HE staining and immunochistochemistry SP.RESULTS: The expression of HSP70 was negative or weakly positive in ischemia control group and puerarin treated control group, while that in ischemia experiment group and puerarin treated experiment group was significantly increased(P0.05);The numbers of dead cells in control group and puerarin group were found to be significantly larger than that in normal group(P