Background and purpose:Fatty acid synthase (FAS) is the sole protein in the human genome capable of intracellular synthesis of long-chain fatty acids. FAS overexpression is detected in various cancer tissues including colorectal cancer because of the increasing requirement of tumor for long-chain fatty acid. This study was to investigate the association between serum levels of FAS in patients with colorectal cancer and clinicopathological characteristics of colorectal cancer.Methods:A total of 60 patients who underwent radical surgical resection for colorectal cancer from Mar. 2013 to Mar. 2014 were selected as the study group, while 20 healthy volunteers were selected as the control group. The serum levels of FAS were measured by enzyme-linked immunosorbent assay (ELISA) methods. Differences of serum levels of FAS in patients with various clinicopathological characteristics of colorectal cancer were analyzed.Results:The serum levels of FAS in the study group were signiifcantly different with those in the control group. Serum FAS levels of patients belonging to stageⅠ-Ⅱ,Ⅲ andⅣ were 13.24±11.43, 24.20±11.87 and 35.44±12.18 mg/L, respectively, and were statistically different. Serum FAS levels of patients belonging to high, moderate and low differentiation were 16.46±10.58, 20.38±11.87 and 25.84±10.88 mg/L, respectively, there were also statistically different.Conclusion:FAS may be involved in the development and progression of colon cancer.

Objective:To investigate the correlation between serum levels of resistin and leptin in patients with colon cancer and clinicopathological characteristics of colon cancer .Methods :A total of 29 patients who underwent radical surgical resection for colon cancer from Mar 2013 to Dec 2013 were selected as the study group ,while 27 healthy volunteers were selected as the con-trol group .The serum levels of resistin and leptin were measured by enzyme-linked immunosorbent assay(ELISA) .The correla-tion between patients′ serum levels of resistin and leptin and their clinicopathological characteristics were analyzed .Results:The serum levels of resistin and leptin in the study group were significantly different from those in the control group (P<0 . 05) .The serum levels of resistin and leptin had no significant difference among patients with colon cancer at different stages or different differentiation degrees(P>0 .05) .Conclusions :Resistin and leptin may be involved in the occurrence and development of colon cancer .