Diagnostic value of 4 new tumor markers in bronchoalveolar lavage fluid in the diagnosis of peripheral lung cancer / 解放军医学杂志

ABSTRACT

Objective To investigate the clinical value of heat shock protein 90α (HSP90α), glutathione S-transferase P1 (GSTP1), ubiquitin specific peptidase 8 (USP8) and chitinase 3-like 1 (CHI3L1) in bronchoalveolar lavage fluid (BALF) and serum for diagnosis and evaluation of the extent of peripheral lung cancer. Methods The levels of HSP90α, GSTP1, USP8 and CHI3L1 of in BALF and serum were measured and compared among 100 patients with peripheral lung cancer (PLC) and 50 patients with benign lung diseases (BLD) by ELISA. The results were compared and analyzed. Results The average content of HSP90α and CHI3L1 in BALF of PLC patients were higher than that in BLD patients (P0.05). The levels of HSP90α and CHI3L1 in BALF of the patients with small nodular lung cancer group (primary focus diameter ≤1cm) and BLD patients showed no significant difference (P>0.05). The levels of GSTP1 and USP8 in BALF and serum of PLC patients and that of BLD patients showed no significant difference (P>0.05). The levels of HSP90α, GSTP1, USP8 and CHI3L1 in BALF and serum showed no significant correlation with other factors, such as the patient's age, pathological classification (adenocarcinoma or squamous carcinoma) and stage of lung cancer (phase to ). The level of CHI3L1 in BALF was correlated to the diameter of the primary foci (P<0.05), while the levels of other lung cancer markers in BALF and serum showed no significant correlation with diameter of primary focus. Conclusion Detection of tumor markers such as HSP90α and CHI3L1 from patients' BALF has a diagnostic value for PLC, and is superior to the examinations of patients' serum specimens. The measurement of HSP90α in BALF shows better clinical value, and it may contribute to the diagnosis of peripheral pulmonary carcinoma.