title: Expression and clinical significance of glucose transporter 1 mRNA in bronchial brushing liquid-based cytology specimens from patients with and without lung cancer.
abstract: OBJECTIVE
  The aim of this study was to evaluate the diagnostic utility of glucose transporter 1 (GLUT1) mRNA expression in bronchial brushing specimens from patients with lung cancer.
  
  
  METHODS
  GLUT1 mRNA levels were detected by reverse transcription-polymerase chain reaction (RT-PCR) in SurePath(TM) liquid-based cytology bronchial brushing specimens from patients with lung cancer (n=76) and benign lung disease (n=154).
  
  
  RESULTS
  Compared with patients with benign disease and compared with cytology, GLUT1 mRNA was found significantly more frequently in patients with all carcinomas, squamous cell carcinomas, adenocarcinomas and small cell carcinomas, as well as central, peripheral and diffuse carcinomas (P<0.01). Minor differences were noted in GLUT1 mRNA and cytology results between histological types and tumour location but were not statistically significant. The diagnostic performance of RT-PCR analysis of GLUT1 mRNA was significantly higher than cytology in terms of sensitivity (97.4 ± 3.6% versus 65.8 ± 10.7) and negative predictive value (98.6 ± 1.9%, versus 85.6 ± 5.1%) but specificity (90.9 ± 4.5%) and positive predictive value (84.1 ± 7.6%) were lower than cytology (100%).
  
  
  CONCLUSIONS
  Using liquid-based cytology, RT-PCR can be performed on bronchial brushing specimens to detect GLUT1 mRNA expression, and may be a useful adjunct to cytology diagnosis. It was more sensitive than cytology but its lower specificity should be taken into account.
authors.affiliation: Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
authors.forename: M
authors.initials: M
authors.lastname: Lv
authors.forename: Y-B
authors.initials: YB
authors.lastname: Fan
authors.forename: Y-J
authors.initials: YJ
authors.lastname: Zhao
authors.forename: T-Y
authors.initials: TY
authors.lastname: Wang
authors.forename: G-P
authors.initials: GP
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D001980:Bronchi / Q000378:metabolism* / Q000473:pathology*; D003584:Cytological Techniques / Q000379:methods*; D005260:Female; D005786:Gene Expression Regulation; D051272:Glucose Transporter Type 1 / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013048:Specimen Handling / Q000379:methods*
chemical_list: D051272:Glucose Transporter Type 1; D012333:RNA, Messenger; C495677:SLC2A1 protein, human