OBJECTIVETo investigate the expression of IFITM3 in colorectal carcinoma and its clinical significance.

METHODS213 patients with colon ademocarcinoma and 214 patients with colon adenoma treated by surgery in our hospital from March 2008 to June 2010 were included in this study. The levels of IFITM3 in normal colon nucosa, adenoma, and adenocarcinoma tissues were detected by real-time PCR and immunochemistry, and its relationship with metastasis and prognosis in 213 colorectal cancer patients was analyzed.

RESULTSThe IFITM3 mRNA level in metastatic tumor group was 18.37 ± 0.61, significantly higher than that in the normal 4.49 ± 0.69 and non-metastases groups (7.32 ± 0.76; F = 460.380, P < 0.001). The positive rate of IFITM3 protein expression in metastatic tumor group (69.0%) was significantly higher than that in the normal (3.9%), non-metastasies groups (19.0%) and adenoma groups (11.3%). Our clinical analysis confirmed that the IFITM3 expression was associated with peritumoral invasion, hepatic metastases, metastases of para-colonic lymph nodes, mesocolonic lymph nodes and mesenteric root lymph nodes, omental metastasis and AJCC classification (P < 0.05). Furthermore, the survival curve analysis showed that patients with lower IFITM3 level expression had a higher 5-year survival rate (88.8%) than that in the patients with higher expression (40.2%, P < 0.001).

CONCLUSIONSIFITM3 expression has a positive correlation with metastasis and prognosis in patients with colorectal carcinoma.

Adenocarcinoma ; diagnosis ; metabolism ; Adenoma ; Colorectal Neoplasms ; diagnosis ; metabolism ; Humans ; Liver Neoplasms ; metabolism ; Membrane Proteins ; genetics ; metabolism ; Neoplasms ; Peritoneal Neoplasms ; Prognosis ; RNA, Messenger ; RNA-Binding Proteins ; genetics ; metabolism ; Real-Time Polymerase Chain Reaction ; Survival Analysis ; Survival Rate

Objective To examine short-term outcomes and long-term survival of elderly patients (aged over 80 years) with colorectal cancer who received laparoscopic versus open surgery. Methods A total of 313 patients over 80 years old with colorectal cancer who underwent radical surgery were included.According to the surgical method, all patients were divided into open-surgery group (n=143) and laparoscopic surgery group (n=170).Baseline data were balanced between the two groups by using propensity score matching.Kaplan-Meier was used to draw the survival curve, and survival was compared by Log rank tests.Cox proportional risk model was used to analyze the effects of all factors on overall survival (OS) and disease-free survival (DFS). Results After matching, 93 patients were included in each group.The mean intraoperative blood loss, the incidence of overall postoperative complications and gradeⅠ-Ⅱ complications in the laparoscopic surgery group were significantly lower than those in the open surgery group (all P < 0.05).The time to first flatus, the time to oral feeding, and postoperative hospital stays in the laparoscopic surgery group were significantly shorter than those in the open surgery group (all P < 0.05).The mean number of lymph-node dissection was also significantly higher in the laparoscopic surgery group than in the open surgery group (P=0.030).Patients in both groups had similar 5-year OS (P=0.594) and DFS (P=0.295).Multivariate Cox prognostic analysis showed that CEA level > 5 ng/ml, pathological TNM stage Ⅲ, and perineural invasion were independent risk factors for poor OS and DFS. Conclusion Compared with open surgery, laparoscopic surgery can provide better short-term advantages and similar long-term outcomes for colorectal cancer patients over 80 years of age.