title: [Expressions of Dab2 and ERK1 in esophageal carcinoma tissues and their clinical significance].
abstract: OBJECTIVE
  To explore the expressions of protein and mRNA of disabled-2 (Dab2) and extracellular signal-regulated kinase1 (ERK1) in esophageal squamous cell carcinoma tissue (ESCC) and their clinical significance.
  
  
  METHODS
  The expressions of protein and mRNA of Dab2 and ERK1 were detected in ESCC (n = 59), atypical hyperplasia (n = 27) and normal esophageal mucosa (n = 36) tissues by immunohistochemistry, in situ hybridization and reverse transcription polymerase chain reaction (RT-PCR).
  
  
  RESULTS
  The expressions of protein and mRNA of Dab2 were lesser in ESCC than those in atypical hyperplasia and normal esophageal mucosa tissues (23.7% vs 94.4%, 44.4% and 18.6% vs 97.2%, 33.3%). And the expressions of protein and mRNA ERK1 were higher in ESCC than those in atypical hyperplasia and normal esophageal mucosa tissues (81.4% vs 44.4%, 63.0% and 78.0% vs 30.6%, 51.9%) (all P < 0.05). Additionally, the expressions of protein and mRNA of Dab2 and ERK1 were closely related with lymph node metastasis in ESCC tissue and the expressions of protein and mRNA of ERK1 closely related with the depth of tumor invasion in ESCC tissue (all P < 0.05). Furthermore, the results of correlation analysis revealed that expressions of protein and mRNA of Dab2 and ERK1 in ESCC had a negative correlation (all P < 0.05).
  
  
  CONCLUSIONS
  The expressions of protein and mRNA of Dab2 and ERK1 play important roles in the infiltration, metastasis and carcinogenesis of ESCC and their effects may be antagonistic to each other.
authors.affiliation: Department of Pathology, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Pang
authors.forename: Yuewei
authors.initials: Y
authors.lastname: Ma
authors.forename: Yunhui
authors.initials: Y
authors.lastname: Qu
authors.forename: Haijun
authors.initials: H
authors.lastname: Yang
authors.affiliation: Email: gaodlxq@126.com.
authors.forename: Dongling
authors.initials: D
authors.lastname: Gao
mesh_terms: D048868:Adaptor Proteins, Signal Transducing / Q000378:metabolism*; D000328:Adult; D000368:Aged; D051017:Apoptosis Regulatory Proteins; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D004938:Esophageal Neoplasms / Q000378:metabolism* / Q000473:pathology; D000077277:Esophageal Squamous Cell Carcinoma; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism*; D025521:Tumor Suppressor Proteins / Q000378:metabolism*
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D051017:Apoptosis Regulatory Proteins; C102885:DAB2 protein, human; D025521:Tumor Suppressor Proteins; D048052:Mitogen-Activated Protein Kinase 3