The changes and significance of levels of soluble intercellular adhesion molecule-1 in serum and tissue of patients with colorectai cancer

Objective To study the changes of serum and tissue soluble intercellular adhesion molecule(sICAM)-1 in colorectal cancer patients and their clinical significance. Methods Serum level of sICAM-1 was detected by the double antibody sandwich enzyme-linked immunosorbent assay method in 44 patients with colorectal cancer before and after operation, 28 patients with intestinal polyps and 30 controls.Simultaneously, tissue level of sICAM-1 was measured in the patients of colorectal cancer and intestinal polyps. Results The serum sICAM-1 level in colorectal cancer patients[ (693.22±276.25) mg/L]was significantly higher than that in the intestinal polyps patients [(61.99±27.39) mg/L]and healthy controls[(59.28±27.55) mg/L]. The tissue sICAM-1 level in the colorectal cancer [(706.92±286.09)mg/L ]was significantly higher than that in the intestinal polyps patients[ (63.06±27.06) mg/L,P<0.01 ]. The serum and tissue levels of sICAM-1 in Dukes C-D stages of the colorectal cancer showed significantly higher than those in Dukes A-B stages (P<0.01 ). The level of sICAM-1 declined remarkably after one month of radical operation. Conversely, it decreased illegibly after palliative operation. Conclusion Dynamic alterations of serum and tissue sICAM-1 level may be used as indicators of diagnosis, choice of operative method and judgment of prognosis in patients with colorectal cancer. Key words: Intestinal neoplasms; Cell adhesion molecules