Research on the Characteristics and Application of Lactobacillus Rhamnosus X253 as Oral Probiotics
- Conditions
- Dental Caries
- Registration Number
- NCT05123651
- Lead Sponsor
- Junlebao Dairy Group Co., Ltd.
- Brief Summary
The aim of the study is to study the application of Lactobacillus rhamnosus X253 as oral probiotics by the way of a randomised, double blinded, parallel, placebo-controlled clinical trial, and to eto detect the changes in oral flora of volunteers, and judge the improvement effect of X253 lozenges on the human oral flora.
- Detailed Description
population experiments were carried out, and Quantitative Real-time PCR was used to detect the expression level of the target strains in volunteers' oral, High-throughput sequencing technology to detect the changes in oral flora of volunteers, and judge the improvement effect of X253 lozenges on the human oral flora. The effects of X253 lozenges on the volunteers' oral odor, defecation frequency and gum bleeding was surveyed and conuted by questionnaire.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 60
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Porphyromonas gingivalis(P.g), Streptococcus mutans(S.m), Streptococcus gordonii(S.g), and Bifidobacterium(Bif) gene expression from tartar samples week 4 during the intervention In a sterile operating table, place the collected dental floss in a 180μL lysozyme (20mg/mL) water bath, use a DNA extraction kit (Tiangen Biotechnology Co., Ltd.) to extract the DNA in the oral sample, and store the DNA sample at -20°C. Quantitative Real-time PCR (Tiangen Biotechnology Co., Ltd.) was performed for the Porphyromonas gingivalis(P.g), Streptococcus mutans(S.m), Streptococcus gordonii(S.g), and Bifidobacterium(Bif) contained in the DNA of the tartar sample. The experiment results at 0 weeks were used as the control, and the relative quantitative method which is named 2-∆∆ct method was used to calculate the gene expression level of the target bacteria in the 4th week.
- Secondary Outcome Measures
Name Time Method changes of oral problems 1 week during the intervention Design a questionnaire about the improvement of oral problems, and distribute it to the volunteers every week, then collect and organize the data.
Trial Locations
- Locations (1)
Shijiazhuang JunlebaoDairy Co.Ltd.
🇨🇳Shijiazhuang, Hebei, China
Shijiazhuang JunlebaoDairy Co.Ltd.🇨🇳Shijiazhuang, Hebei, China