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Objective To investigate the role of miR-592 in the Glioma.Methods We first analyzed the expression of miR-592 in Glioma tissues from patients by quantitative PCR.We transfected U251 cells with miR-592 mimics and then detected the growth of cells by MTT assay.We performed dual-luciferase reporter assay and western blot assay to examine whether Runx2 was the direct target of miR-592 in U251 cells.In order to test whether Runx2 was the functional target of miR-592,we determined the cell growth curve by down-regulating the level of Runx2.Moreover,we also detected the apoptosis of U251 after Runx2 knockdown.Results The expression of miR-592 was significantly reduced in glioma tissues (t=2.752,P--0.013).Over-expression miR-592 remarkably increased the apoptotic rate of U251 cells compared with the control group (t=2.127,P=0.031;t=2.284,P=0.026).Flow cytometry analysis showed that MiR-592 significantly promoted apoptotic cell death of U251 cells Apoptosis rate was 7.2％±0.68％ in miR-592 group and 17.47％±1.45％ in control group (t=3.294,P=0.007).The results of double luciferase assay and Western blot assay showed that miR-592 directly targeted the 3'Runx2 of-UTR to inhibit the level of Runx2 protein.The effect of down-regulation of Runx2 on the growth of U251 cells was detected,the results showed that growth was significantly slower in the cells transfected with Runx2 siRNA than in those without Runx2 siRNA (t=3.124,P=0.O11).Detection of cycle by flow cytometry showed that runx2 down-regulated the apoptosis rate of U251 cells.Tumor growth curve showed that overexpression of miR-592 significantly inhibited tumor growth and the down regulation of Runx2 expresssion also significantly inhibited tumor growth.Conclusion miR-592 suppresses the growth and promotes the apoptotic rate of U251 cells by targeting Runx2.
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Objective To discussion the effect of endoscopic single nostril transsphenoidal pituitary tumor resection on improving clini-cal symptoms and related quality of life of patients. Methods Selected 114 cases of patients with pituitary tumors in our hospital from August 2013 to August 2015, and randomly divided them into the nasal endoscopic group and the microscopic group according to the random number table,with 57 patients in each group. Patients of the 2 groups were treated with nasal endoscopic and microscopic single nostril transsphenoi-dal pituitary tumor resection respectively. The operation situation,hormone decline,incidence of complications after surgery and SNOT-20 and VAS score of the two groups were compared. Results Operative time of nasal endoscopic group was significantly higher than that in the mi-croscopic group,whlie the blood loss,length of hospital stay in endoscopic group was significantly lower than the microscopic group,and the difference was statistically significant (P0. 05). One week after operation,cerebrospinal fluid cell count,cerebrospinal fluid protein,adrenocorticotropic hormone,serum chloride,sodium, growth hormone,and prolactin levels of the nasal endoscopic group were lower than the microscopic group (P<0. 05). The complication rate was 14. 9% in the nasal endoscopic group,which was obviously lower than 59. 6% in the microscopic group (P<0. 05). One week after operation,the SNOT-20 scores and VAS scores were increased in both of the two groups,but the microscopic group increased more significantly (P<0. 05). Conclusion Endoscopic single nostril transsphenoidal pituitary tumor resection surgery cost longer operation time,but it lead to less trauma and less postoperative complications,which may delay the decline of patients’ quality of life and promote the improvement of prognosis.