Objective To investigate the pain-relieving effectiveness of persistent epidural anesthesia and its influence on mothers and infants.Methods 40 pregnant women without any obstetric complications and anesthetic contraindications were selected as the observation group,and persistent epidural anesthesia were applied when the cervicis opened to be larger than 3cm.40 cases with similar obstetric conditions were regarded as the control group without using any anesthesia.We compared the degree of labor pain,duration,delivery mode,the incidence of postpartum hemorrhage,intrauterine distress,neonatal asphyxia between the two groups.Results There were significantly difference in the rate of oxytocin utilization,vaginal delivery and the time of stageⅡ labor.There were no obvious difference in the active phase of labor course,the incidence of cesarean birth,intrauterine distress,neonatal asphyxia and postpartum hemorrhage between the two groups.Conclusions The results indicate that epidural anesthesia could affect the length of stageⅡ labor time and have merits of simple,obvious analgetic effect,but inflecencing delivery mode,therefore it to be improve.

Objective To analyze the expression of ROCK2 in osteosarcoma tissues and explore its effect on the invasion and migration of osteosarcoma cells and related mechanism. Methods Real-time fluorescent quantitative PCR, Western blot and immunohistochemical staining were used to detect the expression of ROCK2 in osteosarcoma tissues. The migration and invasion of osteosarcoma cells were analyzed by wound-healing and Transwell assays after the knockdown of ROCK2 expression. The effect of reducing ROCK2 expression on metastasis in vivo was tested by tail vein metastasis experiment. We detected the expression of EMT-related proteins in osteosarcoma cells, and added the EMT inducer TGF-β to osteosarcoma cells with down-regulated ROCK2 expression to detect the changes of cell invasion and migration. Results The expression of ROCK2 in osteosarcoma tissues was significantly higher than that in corresponding adjacent tissues (P < 0.05). After down-regulating the expression of ROCK2 in osteosarcoma cells, the invasion and migration abilities in vivo and in vitro were significantly inhibited (P < 0.05). The expression of EMT-related protein E-cadherin decreased, while N-cadherin and Vimentin proteins increased significantly. Inducing EMT could attenuate the inhibitory effect of down-regulating ROCK2 on the invasion and migration of osteosarcoma cells. Conclusion The expression of ROCK2 is increased in osteosarcoma tissues, which promotes the invasion and migration of osteosarcoma cells by inducing EMT. ROCK2 may be a potential biomarker for targeted therapy of osteosarcoma.