ABSTRACT
Objective:To investigate the driving effect of prostate cancer associated transcript 4 (PCAT4) on the up-regulation of upregulator of cell proliferation (URGCP) expression in breast cancer progression through sponging miR-508-5p.Methods:The microarray data of lncRNA and miRNA with differential expression in breast cancer tissue were analyzed by Cancer Genome Atlas. The expression of PCAT4 in breast cancer was evaluated by real-time quantitative polymerase chain reaction (RT-qPCR). Cell proliferation was measured by MTT and colony formation, cell apoptosis was analyzed by TUNEL, and cell migration and invasion were analyzed by Transwell. The correlation between PCAT4 and miR-508-5p, and miR-508-5p and URGCP was analyzed by RNA pull-down and double luciferase assay. Tumor xenograft studies were performed to analyze the correlation between PCAT4/miR-508-5p/URGCP axis and breast cancer cell growth in vivo. Measurement data were expressed as mean ± standard deviation ( ± s). T-test was used for comparison between two groups, and one-way analysis of variance was used for comparison between multiple groups. The correlation between PCAT4 and URGCP and miR-508-5p expression was evaluated by Pearson correlation analysis. Results:The expression level of PCAT4 was up-regulated in breast cancer tissues and cells. Knockout of PCAT4 inhibited cell proliferation and metastasis and promoted cell apoptosis. miR-508-5p was the target of PCAT4 and was negatively correlated with PCAT4. Overexpression of miR-508-5p in breast cancer can inhibit cell growth, migration and invasion, and promote cell apoptosis. URGCP is the target of miR-508-5p and induces progression of breast cancer. Tumor xenograft studies showed that PCAT4 drives breast cancer progression by affecting miR-508-5p/URGCP.Conclusion:The expression of PCAT4 is up-regulated in breast cancer tissues and cells, and PCAT4 can act as a molecular sponge of miR-508-5p, and significantly promote breast cancer progression by activating URGCP protein expression.
ABSTRACT
A total of 33 non-neurological symptoms patients with thoracolumbar fractures underwent unilateral pedicle screw fixation plus short segment pedicle screw through para-vertebral muscles. Preoperative computed tomography ( CT) scan showed one side pedicle was complete.The average follow-up period was 22 (12-40) months.There was no internal fixation failure.The posterior paraspinal approach for unstable thoracolumbar fractures , retaining posterior ligament complex and fixation by unilateral pedicle screw fixation through the pedicle of fractured vertebra , is both safe and effective for thoracolumbar fractures.
ABSTRACT
Objective To evaluate the clinical results using modified Richards nail treating femoral intertrochanteric comminuted fractures.Methods From March 2002 to March 2005,69 patients suffered from femoral intertrochanteric comminuted fractures belong to Evan Ⅲ type or Ⅳ type were randomly divided into experimental group and control group.The experimental group was treated with modified Richards nail,including 34 patients,18 males and 16 females.The patients were from 61 to 78 years old,and the mean age was 67.5 years old.In this group,21 patients were involved in left femoral intertrochanteric comminuted fractures,13 patients were involved in right.The pattern of the fractures included EvanⅢ type in 24 cases and Ⅳ type in 10 cases.The control group including 35 patients was treated with DHS,and there were 19 males and 16 females with an average age of 65.9 years(ranged 61 to 80 years).In this group,19 patients were involved in left femoral intertrochanteric comminuted fractures,16 patients were involved in right.The pattern of the fractures included EvanⅢ type in 25 cases and Ⅳ type in 10 cases.Results The experimental group were followed-up 9-23 months with a mean of 11.60?3.78 months.The control group were followed-up 9-24 months with a mean of 11.40?4.12 months.In experimental group,the average fracture healing time was 3.65?0.97 months.While in the control group,the average fracture healing time was 4.32?1.38 months.In experimental group,the leg length measured at the 9th month post-operatively was averagely(0.82?0.36)cm shorter in the diseased side than in the healthy side,while in control group the leg length was averagely(1.08?0.51)cm shorter.There was significant difference between two groups.Compared to the control group,the curative effect was better in the experimental group.Conclusion Treating femoral intertrochanteric comminuted fractures with the modified Richards nail shows a good result,which can effectively diminish the non-union or mal-union of the fractures.