Purpose: The aim of study was to detect PRL-3 protein in sera of patients with colorectal cancer. Methods: The study group consisted of 22 patients with colorectal carcinoma and 10 healthy controls. The serum concentration of PRL-3 protein was evaluated by the ELISA method. Results: In the study group with colorectal cancer, the level of PRL-3 protein in preoperative sera was negative (<0.115ng/ml) in 7 cases while the mean value of PRL-3 concentration was 0.616ng/ml (range 0.206-2.072ng/ml) in 15 patients. No statistically significant differences between the study group and healthy controls were observed. Our data showed that increase in level of PRL-3 protein in sera of patients with colorectal cancer is associated with greater tumor size (p<0.05). Conclusions: PRL-3 protein was found to be present in sera of patients with colorectal cancer. However, our study indicates lack of clinical usefulness of determining the levels of PRL-3 in the sera of patients with colorectal cancer.
Purpose: To evaluate the clinical significance of MMP-2 and TIMP-2 concentrations in the sera of patients diagnosed with colorectal cancer. Methods: The study group comprised 48 patients with colorectal carcinoma and 24 healthy controls. The serum concentration of MMP-2 and TIMP-2 proteins was evaluated by the ELISA method. Results: The mean level of MMP-2 in the sera of patients with colorectal cancer was 39.4 ng/ml and was significantly lower compared with the control (p<0.001). A decrease in TIMP-2 protein in the sera of patients with colorectal cancer was also observed where its mean level was 132.3 ng/ml. The concentration of MMP-2 and TIMP-2 did not correlated with any clinicopathological parameters, except for the patients’ age. In addition, the concentration of MMP-2 in the sera of patients with CRC correlated negatively with the number of white blood cells in the blood and the prothrombin index. The concentration of TIMP-2 correlated positively with potassium and urea concentration in the blood. Conclusions: The results of our study indicate lack of clinical usefulness of determining the levels of MMP-2 and TIMP-2 in the sera of patients with colorectal cancer. However, these proteins play an important role in the carcinogenesis of colorectal cancer.
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