Objective:To investigate the effects of short-chain fatty acids(SCFAs)on the proliferation,migration and adipogenic ability of dental pulp stem cells(DPSCs).Methods:Dental pulp stem cells were extracted from young permanent teeth and treated with sodium acetate and sodium propionate.CCK-8 assay was used to detect the activity of DPSCs.Immunofluorescence staining was used to detect the proliferation of DPSCs.The scratch test was employed to assess the migratory activity of DPSCs,alizarin red staining was utilized to evaluate the capacity for calcification nodule formation,and red oil O staining was applied to determine the adipogenic potential of DPSCs.Results:The acetate and propionate significantly enhanced the viability,promoted the proliferation,migration and adipogenic differentiation of DPSCs.The osteogenic differentiation ability of DPSCs,which were with sodium acetate and sodium propionate,was observed.There was no significant difference in the osteogenic differentiation ability of DPSCs compared to the control group.Conclusion:The findings suggest that SCFAs have the potential to enhance the viability,proliferation,migra-tion,and adipogenic differentiation of dental pulp stem cells,thereby promoting their application in pulp repair and tissue engineering.

Objective:To investigate the effects of short-chain fatty acids(SCFAs)on the proliferation,migration and adipogenic ability of dental pulp stem cells(DPSCs).Methods:Dental pulp stem cells were extracted from young permanent teeth and treated with sodium acetate and sodium propionate.CCK-8 assay was used to detect the activity of DPSCs.Immunofluorescence staining was used to detect the proliferation of DPSCs.The scratch test was employed to assess the migratory activity of DPSCs,alizarin red staining was utilized to evaluate the capacity for calcification nodule formation,and red oil O staining was applied to determine the adipogenic potential of DPSCs.Results:The acetate and propionate significantly enhanced the viability,promoted the proliferation,migration and adipogenic differentiation of DPSCs.The osteogenic differentiation ability of DPSCs,which were with sodium acetate and sodium propionate,was observed.There was no significant difference in the osteogenic differentiation ability of DPSCs compared to the control group.Conclusion:The findings suggest that SCFAs have the potential to enhance the viability,proliferation,migra-tion,and adipogenic differentiation of dental pulp stem cells,thereby promoting their application in pulp repair and tissue engineering.

OBJECTIVE: To analyze the clinical features and pathogenic variant in a Chinese pedigree affected with cleidocranial dysplasia (CCD). METHODS: Clinical data of 8 patients from the pedigree was collected, including physical examination and X-ray images of head, face, spine, limbs, and mouth. Peripheral blood samples were collected from 6 affected members for the extraction of genomic DNA. The proband and other 3 patients were subjected to trio-whole exome sequencing. Candidate variant was verified by Sanger sequencing of the other 2 affected members from the pedigree. RESULTS: This pedigree has included 22 members (8 affected) from four generations. Genetic testing revealed that the proband has harbored a novel pathogenic variant of the RUNX2 gene [NM_001024630: c.1268_1277del (p.P425Afs*56)], which was inherited from her mother and carried by all affected members in the pedigree. The same variant was not detected among the unaffected members, suggesting co-segregation with the phenotype. CONCLUSION The c.1268_1277del (p.P425Afs*56) variant of the RUNX2 gene probably underlay the pathogenesis of CCD in this pedigree. Genetic testing has facilitated the definite diagnosis and enabled prenatal diagnosis.
Humans ; Pregnancy ; Female ; Cleidocranial Dysplasia/genetics* ; Pedigree ; Core Binding Factor Alpha 1 Subunit/genetics* ; Phenotype ; China ; Mutation

Objective: To produce latent membrane protein 2A (LMP2A) chimeric antigen receptor (CAR)-T cells and detect the lethal effect of LMP2A CAR-T cells on nasopharyngeal carcinoma (NPC) cells. Methods: The study was conducted from September 2016 to December 2017.Genetic engineering technology was used to construct anti-LMP2A CAR lentiviral expression vector and sequencing was identified. The expression of anti-LMP2A CAR in the 293T cells was confirmed by western blot. CCK8 assay was used to evaluate the cytotoxicity of LMP2A CAR-T cells to NPC cells. ELISA assay was performed to test IL-2 and IFN-γ releasing of activated LMP2A CAR-T cells. The inhibition effect of LMP2A CAR-T cells on NPC xenograft tumor was observed in vivo. Statistical analysis was performed by statistical software SPSS 21.0. Results: The results of PCR and sequencing showed that anti-LMP2A CAR lentiviral expression vector was constructed successfully. The result of western blot indicated the expression of anti-LMP2A CAR in the 293T cells effectively. The results of CCK-8 assay showed that the killing activities of LMP2A CAR-T cells to LV-LMP2A-CNE1 cells were (72.11±9.75)%, (54.65 ±5.42)% and (36.68±3.80)% at 20∶1, 10∶1 and 5∶1 ratio of effective cells to target cells, and had a statistical difference compared to CD19 CAR-T cells and T cells (P<0.05). There was no significant difference in the killing activities of LMP2A CAR-T cells to CNE1 cells compared with CD19 CAR-T cells and T cells. The results of ELISA showed that the content of IL-2 and IFN-γ in the co-culture supernatant of LMP2A CAR-T cells and LV-LMP2A-CNE1 cells was significantly higher than that of LMP2A CAR-T cells and CNE1 cells which had statistical difference (P<0.05); In vivo experiment, the volume of LMP2A CAR-T cell group was (80.3±10.0) mm³ which was significantly lower than that of the control groups, and the difference was statistically significant (P<0.05). Conclusion LMP2A CAR-T cells are successfully prepared and have an obvious targeting cytotoxicity on LMP2A-positive NPC cells.

Objective:To evaluate the effectiveness of Minqing Ao dental desensitizer in the treatment of early childhood caries (ECC).Methods:41 0 teeth with ECC in 1 1 0 cases were divided into 3 groups.Minqing Ao dental desensitizer,fluoride toothpaste and ordinary toothpaste without fluoride were respectively used in group A,B and C.The laser fluorescence value(LFV)was meas-ured and compared before treatment,2,4,6 weeks and 6 months after treatment.Results:2 weeks after treatment,the LFV was not significantly changed in the 3 groups.4 weeks after treatment LFV in group A was decreased(P<0.01 ),the LFV in group A was lower than that in group B(P<0.05)and in group C(P<0.01 ).While there was no significant difference between group B and C(P>0.05).6 weeks after treatment LFV in group A and B was decreased(P<0.01 and P<0.05),there was significant difference be-tween each 2 groups(P<0.05).6 weeks and 6 months after treatment LFV in group A was lower than that in group B(P<0.01 ),and in group B was lower than that in group C(P<0.01 ).Conclusion:Minqing Ao is effective for treatment of early childhood caries.

BACKGROUND:Resin infiltration is a novel approach in treating non-cavitated caries lesions on smooth surfaces, and the effectiveness comparison between resin infiltration and remineralizing therapy is required.
OBJECTIVE:To compare the effects of resin infiltration and remineralizing therapy on inhibition of non-cavitated lesions in vitro.
METHODS:Three subsurface lesions were created on 35 bovine labial specimens. One of the lesions was permeated with Icon? infiltrant, one was applied by 0.1%NaF solution daily for 7 consecutive days, whereas one lesion remained as the untreated control. Subsequently, half of each specimen was covered with nail varnish
(baseline) and the other half was re-exposed to a demineralizing solution for 5 days (experimental). The specimens were cut perpendicularly to the surface, stained with Rhodamine B and observed with fluorescence microscope.
RESULTS AND CONCLUSION:For lesions permeated with Icon? infiltrant and applied by 0.1%NaF solution, the progression of lesion depth was significantly decreased (P<0.05) compared with the untreated control. Lesions permeated with Icon? infiltrant got more significantly reduced lesion progression (P<0.05) compared with the ones applied by 0.1%NaF solution. It can be concluded that both resin infiltration and remineralizing therapy have active effects on inhibition of non-cavitated lesions, and fil ing the pores with Icon? infiltrant can inhibit further demineralization even better.