Typical multidrug resistance in chemotherapy of thirty cases with colorectal cancer / 中华消化杂志

Objective To evaluate the typical multidrug resistance in colorectal cancer chemotherapy with drugs including 5-Fu,MMC and cisplatin. Methods The expression of mdrl gene and GP170 in thirty colorectal cancer specimens were detected by reverse transcription polymerase chain reaction and immunohistochemistry.At the same time,the sensitivity of the cancer cells to six common chemotheraputic drugs were also detected by MTT colorimetric assay. Results In thirty colorectal cancer specimens,the expression of mdr_1 gene(63.3%) and GP170 (73.3%) were not different,and was concordant with the results of ADM cytotoxicity assay (P