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0.05).Conclusion:All the results of the five measurement methods showed that the condyle was located in the center of the fossa with a variation in the healthy adults in intercuspal position.The CBCT image of the sagittal middle layer of the joint could show the joint space accurately and has an important value in the research related to the changes of TMJ space.
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Objective To investigate the inhibitory effect of DHA and its mechanism of apoptosis induced by DHA on human gastric cancer cell SGC-7901.Methods The survival rate of tumor cells was evaluated by MTT assay,cell morphology of apoptotic cell was observed with Hoechest 33258 staining.The contents of MDA and GSH were measured respectively by TBA and DTNB assay.Flow cytometry was used to detect the rate of apoptotic cell and intracellular variation of ROS level.Results After being treated with different concentrations of DHA,the survival rate of tumor cells was decreased in a dose-dependent manner and apoptosis was induced.The morphological characterizes of apoptotic cells were chromatin condensation and formation of apoptotic bodies.Intracellular MDA content was increased in the treated cells compared with control group,whereas GSH was decreased.After treated with 80 ?mol?L-1 DHA 5 h,flow cytometic analysis showed ROS peak and NAC could block the generation of ROS.Conclusion DHA can inhibit the growth of human gastric cancer cell SGC-7901 via inducing apoptosis.The increase of lipid peroxidation production and ROS may play an important role in apoptosis of the cells.
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Objective:To study the correlation between C-myc express io n and clinicopathological characteristics of oromaxillofacial sarcoma. M ethods:C-myc expression was determined by SP method in 37 cases of sarc oma and 14 benign mesenchymal tumors in oral and maxillofacial region. R esults:C-myc expression was detectd in 22 cases (40.54%) of sarcoma and in none of the benign tumor. In sarcoma of gradeⅠ, Ⅱand Ⅲ, the positive r ates of C-myc expression were 16.70%, 30% and 66.67% respectively, and a statis tical significance was only observed in C-myc expression between gradeⅠand Ⅲ( P