ABSTRACT
Objective To study the clinical application of thymidine kinase 1(TK1) in diagnosis of common malignant tumors . Methods The serum TK1 levels of 444 cancer patients and 161 healthy individual(control group) were tested by western blot-en-hanced chemiluminescence assay .Results Compared with control group ,the levels of TK1 in patients with lung cancer ,gastrointes-tinal cancer or breast cancer were significantly higher(P<0 .05) .The positive rates of TK1 in lung cancer ,esophageal cancer ,colon cancer ,colorectal cancer ,breast cancer ,cervical cancer and ovarian cancer were respectively 52 .0% ,59 .6% ,62 .9% ,60 .0% , 62 .1% ,32 .3% ,21 .4% and 11 .0% .Compared with control group(the positive rate of TK1 was 0 .0% ) ,the positive rate of TK1 in lung cancer ,gastrointestinal cancer or breast cancer were significantly higher(P<0 .01) .Conclusion The test of serum TK1 is a valuable marker in common malignant tumor auxiliary diagnosis .