Prognostic Factors of Stage 3 Colorectal Cancer in 433 Patients / 中国医学科学院学报

<p><b>OBJECTIVE</b>To summarize the prognostic factors of stage 3 colorectal cancer.</p><p><b>METHODS</b>The clinical data of 433 patients with stage 3 colorectal cancer who were admitted to our hospital from January 2005 to December 2008 for radical surgery and adjuvant chemotherapy were retrospectively analyzed. Relationship of their clinicopathologic features and treatment with the prognosis were analyzed.</p><p><b>RESULTS</b>Of these 433 stage 3 patients,the mean disease-free survival was (72.37 ± 2.11) months and mean overall survival was (79.91 ± 2.02) months; however, the median survival times were not reached. The 1-,3-, and 5-year disease-free survival rate were 86.8%,77.9%, and 57.0% and the overall survival rate were 91.5%,75.1%, and 63.3%. Multivariate COX regression analysis displayed that intestine obstruction before surgery, complications after surgery,tumor location,positive surgical margin, neural cell infiltration,vessel cancer embolus, TNM stage, lymph node ratio, adjuvant chemotherapy regimens, and chemotherapy duration were the independent factors affecting disease-free and overall survivals in patients with stage 3 colorectal cancer. The efficacies of FOLFOX and XELOX regimens were significantly correlated with patient's age, complications,tumor location,and chemotherapy duration.</p><p><b>CONCLUSIONS</b>Complications,tumor location, TNM stage, and positive surgical margin are the independent prognostic factors of stage 3 colorectal cancer. FOLFOX and XELOX regimen can remarkably improve prognosis,and a longer duration of chemotherapy can achieve better survival.</p>

Thymidylate synthase expression and therapeutic effect analysis of pemetrexed in advanced lung adenocarcinoma / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the expression of thymidylate synthase (TS) in patients with advanced lung adenocarcinoma and its relation with the therapeutic effect of pemetrexed.</p><p><b>METHODS</b>The clinicopathological data of 38 patients with stage IIIIB/IV lung adenocarcinoma receiving pemetrexed treatment were retrospectively analyzed. The tumor samples of the patients were collected for detecting TS expression using RT-PCR, and the therapeutic effect of the treatment was analyzed.</p><p><b>RESULTS</b>TS positivity was found in 26.32 (10/38) of the patients. TS positivity was not correlated to gender, TNM stage or PS score. The total response rate of pemetrexed treatment (CR+PR) was 34.21 (13/38) in these patients, and the rate was 39.29% (11/28) in TS-negative patients, as compared to 20.00% (2/10) in the positive patients (P=0.087). Patients with low TS expression had significantly higher control rate by pemetrexed treatment than those with TS overexpression [89.29% (25/28) vs 40.00% (4/10), P=0.002].</p><p><b>CONCLUSION</b>TS expression may serve as a potential indicator of chemosensitivity to pemetrexed in patients with advanced lung adenocarcinoma.</p>

Expressions of human epidermal growth factor receptor 2 and vascular endothelial growth factor in primary or recurrent metastatic breast cancers / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the expressions of human epidermal growth factor receptor 2 (Her-2) and vascular endothelial growth factor (VEGF) in primary and recurrent metastatic breast cancers and explore their relationship.</p><p><b>METHODS</b>The expressions of Her-2 and VEGF in 60 primary and recurrent metastatic breast cancers were detected using immunohistochemical methods. Their relationship was analyzed.</p><p><b>RESULTS</b>The positive rates of Her-2 and VEGF in the recurrent metastatic breast cancer were 40.00% and 53.33%, respectively, which were significantly higher than that in the primary breast cancer (18.33% and 31.67%) (P < 0.05). The total diversify rates of Her-2 and VEGF were 28.33% and 35.00%, respectively. Her-2 and VEGF expressions were significantly correlated between the primary and the recurrent metastatic breast cancers( P < 0.05).</p><p><b>CONCLUSIONS</b>Her-2 and VEGF may play synergic roles in the occurrence and development of breast cancer. Over-expressions of Her-2 and VEGF predict poor prognosis.</p>