Clinical Significance Of Measuring The Serum Laminin And Collagen Type Ⅳ in Patients With Colorectal Cancer

The contents of Laminin (LN) and Collagen type Ⅳ (Col Ⅳ) in serum were measured by radioimmunoassay in patients with colorectal cancer. It was showed that the content of LN and Col Ⅳ in cancer group was significantly higher than those in control group (P <0.01), the content of LN and Col Ⅳ in group with lymph node metastases was higher than those in group without lymph node metastases (P <0.05). The content of LN in Dukes C group was hight than that in Dukes B group (P <0.05). There was a tendency that the content of serum Col Ⅳ increased with the advance of the Dukes clasification and content of serum Col Ⅳ in DukesD group was higher than that in Dukes B group. This implies that the contents of the serum LN and Col Ⅳ is closely related to the tumor invasion and metastases, and the assay of the LN and Col Ⅳ in serum may be useful to the diagnosis of colorectal cancer.