Objective To observe the expression of CD166 in advanced non-small cell lung cancer (NSCLC),and to explore the relationship between expression of CD166 and clinical characteristics,platinum-based chemotherapy effect of NSCLC patients.Methods A total of 64 cases of NSCLC patients at stage of Ⅲ,Ⅳ were enrolled.Tumor tissue samples were obtained before chemotherapy by bronchoscopy or lung biopsy,and immunohistochemical was used to detect the expression of CD166.All patients received platinum-based chemotherapy(NP/TC/ GP) for 2-4 cycles as the first line treatment.RECIST criterion was used for therapeutic evaluation.Results 46.9% (3 0 cases) of the patients with CD 1 6 6 was positive.The CD 1 6 6 expression was related with smoking (smoking 62.1%,no-smoking 34.3%,x2 =4.916,P =0.027) and degree of differentiation (moderately,low grade 68.2%,high grade 35.7%,x2 =6.112,P =0.013).The effectiveness rate of chemotherapy in CD166 positive patients was 23.3% (7 cases),was significantly lower than 61.8% in CD166 negative patients(21 cases,x2 =9.565,P =0.002).Conclusion NSCLC had CD166 expression,and the expression positive rate was increased in patients with smoking,and low differentiation cancer.The effectiveness rate of platinum-based was decreased in patients with CD166 positive expression,and detection of CD166 can predict the late NSCLC platinum-based chemotherapy effect.

0.05) between two groups in the above results.Disc agar diffusion test showed the sensitivity rates of overall clinical isolates to gatifloxacin and levofloxacin were 97.56% and 92.68%,respectively.The incidence of adverse drug reactions(ADR) of two groups were 23.91% and 43.75%,respectively.In 5 cases severe ADR were found. CONCLUSIONS Sequential therapy of gatifloxacin may get satisfactory results in lower respiratory tract infections of elder people.The irrational use of drugs is an important factor to increase ADR(including collateral damage).So we should pay attention to the ADR and grasp the indications strictly and use the drugs appropriately,especially for the elder patients.