ObjectiveTo explore the influence mechanism of proliferation and invasion in colon cancer cell after silence of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) gene. MethodsRT-PCR or Western blot method was used to detect the expression of PTEN mRNA or protein among four colon cancer cell lines (HT-29, WiDr, CaCo-2, and Colo320 cell lines). small interfering RNA (siRNA) was used to synthetize PTEN siRNA and transfect it into colon cancer cells. The expression of PTEN protein after transfecting was detected by Western blot. WsT-1 and invasion assay were used to examine the effects of PTEN siRNA silence on proliferation and invasion in colon cancer cells. ResultsPTEN mRNA and protein were expressed in all the four colon cancer cell lines. After PTEN siRNA transfected into the colon cancer cells, the expressions of PTEN proteins were inhibited in all the four colon cancer cell lines (P < 0.01), and the proliferation and invasion of colon cancer cells were enhanced significantly (P < 0.01). ConclusionsPTEN siRNA play an important role in metastasis process of colon cancer via enhanced its proliferation and invasion. Therefore, the understanding biologic mechanisms for regulation of PTEN might enable better molecular target therapy of treating the colon cancer patients with metastasis.
ObjectiveTo investigate the situation of depression and anxiety in the patients with postoperative inflammatory small bowel obstruction (PISBO), and to provide the dependent indications for the treatment. MethodsThe serf-rating depression scale (SDS scale) and self-rating anxiety scale (SAS scale) were used to test the depression and anxiety of 79 patients with PISBO, who treated in the Department of General Surgery of The Second Hospital of Lanzhou from Jan. 2008 to Oct. 2014. Comparison between the scores of SDS scale/SAS scale and corresponding Chinese norms was performed, and then exploring the influence factor of depression and anxiety of PISBO patients. ResultsThe standard scores of depression and anxiety were 49.23±11.39 and 50.31±6.25 respectively, which were higher than those of corresponding Chinese norms (P < 0.05). The results of multivariate logistic regression analysis indicated that, the independent influential factors of depression and anxiety in patients with PISBO included course of disease, type of tumor, other postoperative complications, and postoperative insomnia (P < 0.05), patients whose course of disease longer than 15 days, who with malignant tumor, and who suffered from other postoperative complications and postoperative insomnia, had higher ratios of depression and anxiety. ConclusionThe depression and anxiety is very evident in the patients with PISBO, we should pay attention to this phenomenon and give intervention for it.