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[Objective]To analyze the expression profile variation of circle RNA(circRNA)in tongue squamous cell carcinoma(TSCC)tissue and para-carcinoma tissue.[Methods]CircRNA microarray technology was performed to in-spect the difference of circRNA expression in 4 cases of TSCC tissues and 4 cases of para-carcinoma tissues,and then make analysis after the quality control and homogenization of raw data,to identify which have more than 2 times variation and significant difference(P<0.05)by statistical analysis as circRNA with differential expression. To perform functional analysis on circRNA with differential expression.[Results]Compared with para-carcinoma tissue,there were 17171 circRNA differentially expressed in TSCC tissue,while 9982 increase more than 2 times and 7189 reduce more than 2 times.[Conclusion]circRNA expression profile in TSCC changes significantly comparing with the para-carcinoma tis-sue,some differentially expressed circRNA may regulate the occurrence and progression of TSCC through a competitive combination of miRNA.
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[Objectives]To observe the clinical effects of the immediate implant placement of Zimmer dental implant sys-tem in the mandibular posterior region.[Methods]67 cases with a total of 89 mandible posterior teeth to deal with immediate implantion which selected to be treated with Zimmer dental implant system.76 teeth between implant and tooth socket bone wall were simultaneously filled with Bio-oss Collagen.The upper structure was repaired with PFM porcelain crown after the postoperative phase I of 3~6 months.All the patients were followed up for 6~24 months.[Results]During the clinical follow up,the implant survival rate was 100%. In 67 patients,89 implants was successfully loaded,with stable implants,good condition in synosteosis and without adverse subjective symptoms. All of the 67 patients had achieved good synosteosis and success loads clinically and radiologically.[Conclusion]A good osseointegration is obtained in the mandibular posterior re-gion with Zimmer dental implant system,Correctly dealing with Bio-oss Collagen between implant and tooth socket bone wall.At the same time,it can shorten the time of therapy,simplify the procedure,so that the clinical results are more satis-factory.
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Five patients with synovial chondromatosis in the temporomandibular joint were treated in our hospital between August, 2011 and August, 2014. All the patients underwent preoperative imaging examinations for clinical diagnosis and determining the involvement of the lesions. Surgeries were performed and the lesions were confirmed as synovial chondromatosis by pathological diagnosis. The clinical manifestations, imaging features, diagnosis and treatment results were analyzed. All the 5 patients had pain in the joint region, 3 had limited mouth opening, and 3 had swelling in the joint region. X-ray film showed widening of the joint space in all the 5 cases and radiographic findings showed space-occupying lesions in the intra-articular space. Open joint surgeries was performed and completed successfully in all the cases. The postoperative imaging showed no residual lesions in the surgical area. As a rare clinical entity, synovial chondromatosis in the temporomandibular joint was poorly documented without specific clinical manifestations. The diagnosis of synovial chondromatosis relies on imaging, arthroscopic and pathological findings. Corpus liberum is an important feature of the disease occurring frequently in the joint cavity. Surgical intervention is the primary choice for treatment of synovial chondromatosis in the temporomandibular joint, in which the corpus liberum and the affected synovial membrane shall be removed after joint incision.
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<p><b>OBJECTIVE</b>To detect CCR5 protein expression in different human tongue squamous cell carcinoma cells and observe the effect of macrophage inflammatory protein-1β (MIP-1β) on the proliferation and apoptosis of CAL-27 cells.</p><p><b>METHODS</b>Western blotting and immunofluorescence staining were used to detect the expression of the CCR5, the receptor of MIP-1β, in 3 human tongue squamous cell carcinoma cells UM-1, CAL-27, and Tca-8113. CCK-8 assay was used to assess the proliferation of CAL-27 cells stimulated with 10, 20, and 40 ng/mL MIP-1β for 12, 24, or 48 h. The apoptosis of the cells stimulated with MIP-1β (10, 20, and 40 ng/mL) for 24 h was analyzed using flow cytometry with Annexin V/PI double staining.</p><p><b>RESULTS</b>CCR5 expression was detected both on the membrane and in the cytoplasm in all the 3 tongue squamous cell carcinoma cell lines. At the concentrations of 10, 20, and 40 ng/mL, MIP-1β stimulation for 12 and 24 h significantly promoted the proliferation of CAL-27 cells (P<0.05); MIP-1β stimulation for 48 h at the concentrations 10 and 20 ng/mL, but not at 40 ng/mL, promoted the proliferation of CAL-27 cells (P<0.05). MIP-1β stimulation at 40 ng/mL for 24 produced the most obvious apoptosis-inducing effect in CAL -27 cells (P<0.05), while MIP-1β at 10 or 20 ng/mL did not induce obvious apoptosis in the cells (P>0.05).</p><p><b>CONCLUSION</b>CCR5 is expressed in all the 3 human tongue squamous cell carcinoma cells. MIP-1β can promote the proliferation of CAL-27 cells but high concentrations of MIP-1β also induced cell apoptosis. Prolonged stimulation of the cells with a high concentration of MIP-1β shows attenuated effect in promoting cell proliferation probably as a result of cell apoptosis induced by MIP-1β.</p>