Objective:To investigate the role of the expression of E-cadherin(E-Cad) and tissue inhibitor of metalloproteinases-2(TIMP-2) in carcinogenesis and progression of colorectal cancer(CRC).Methods:The E-Cad and TIMP-2 expressions were studied immun ohistochemistrically in 30 specimens of colorectal adenoma and 60 specimens of CRC.Results:The expression rates of E-Cad were 87.10% in colorectal adenoma and 55.00% in CRC, the former was apparently higher than that of the later (P0.05);The significant relationship was observed between low TIMP-2 expression and Dukes stage, metastasis of lymph node and distant organs and poor prognosis.Conclusion:The detection of expression about E-Cad and TIMP-2 may be helpful to judge the malignant behavior and metastasis and prognosis with colorectal carcinoma,furthermore the expression of TIMP-2 may be used to know prognosis of patients.

【Objective】 To comprehensively compare the quality and filtration efficiency of medicinal maltose between two domestic manufacturers(B, C) and one foreign manufacturer(A), compare their product quality as an excipient for intravenous immunoglobulin(IVIG), so as to determine the feasibility and substitutability of maltose as an excipient for IVIG from different manufacturers. 【Methods】 Quality inspection and comparison of maltose from different manufacturers, small-scale filtration tests, and product quality comparision of IVIG(pH4) were conducted. 【Results】 The comparis on results showed that there was no significant difference in the quality of medicinal maltose between manufacturer B and A, and there was no significant difference in the quality of IVIG (pH4) produced. The quality of manufacturer C did not meet the requirements. 【Conclusion】 There is no significant difference in the quality of medicinal maltose produced by manufacturer B and A, which can be used for the production of IVIG (pH4).