Effect of ERBB2 expression on invasiveness of glioma TJ905 cells

OBJECTIVE@#To investigate the influence and possible mechanism of ERBB2 expression on the invasiveness of glioma cells.@*METHODS@#Glioma TJ905 cells were separated and cultured. ERBB2 shRNA and overexpressing vectors were constructed, which were then transfected. The ERBB2 expression was up-regulated or down-regulated. Changes of invasiveness of TJ905 cells were detected by Transwell assay, and the expressions of matrix metalloprotease (MMP)-2 and MMP-9 were measured by Western blot.@*RESULTS@#ERBB2 shRNA transfection vector could effectively inhibit expression of ERBB2; while ERBB2 overexpressing vector transfection could significantly improve the expression of ERBB2 in TJ905 cells. Transwell assay showed that when ERBB2 expression was down-regulated, the invasiveness of TJ905 cells was notably decreased; when ERBB2 expression was up-regulated, the invasiveness of TJ905 cells was markedly increased. Meanwhile, Western blot indicated that down-regulating ERBB2 inhibited the expression of MMP-2 and MMP-9, while up-regulating ERBB2 enhanced their expressions.@*CONCLUSIONS@#ERBB2 expression is closely related to the invasiveness of glioma TJ905 cells.

The early etiological diagnosis and endovascular embolization therapy of Hunt-Hess Ⅳ—Ⅴ grade subarachnoid hemorrhage / 中华放射学杂志

Objective To explore the methods of early etiological diagnosis and principles of endovascular embolization in Hunt-Hess Ⅳ—Ⅴ grade subarachnoid hemorrhage(SAH),and to evaluate the therapeutic efficacy.Methods Thirty-one patients underwent imaging examinations such as CT and DSA to make the early diagnosis of SAH.Meanwhile,Guglielmi detachable microcoil(GDC)was used to applying aneurysmal intracapsular embolization in the ruptured aneurysms,and efficient symptomatic treatment was adopted early postoperatively.The results were tested by ?~2 test.Results All 31 cases were diagnosed early and operated successfully.Among them,the aneurysm lumen was 100% occluded in 26 cases,95% occluded in 3 cases;90% occluded in 2 cases.There were 5 cases complicating with cerebral vasospasm.One case recurrent was cured with secondary complementary GDC embolization.Nine cases(29.0%)had permanent sequelae associated with SAH.According to the Glasgow prognosis score, the therapeutic efficacy was as following:6 patients were in grade Ⅰ,9 in grade Ⅱ,4 in grade m,2 in grade Ⅳ,and 10 in grade Ⅴ;10 patients died,and the morality rate was 32.3%.None of them exhibited re-bleeding with follow-up period of 3 to 68 months postoperatively.Morality rates were significantly different between the group with aneurysmal diameter of 11—25 mm and the group of 5—10 mm(?~2=6.60,P