title: Expression of trefoil factors 1 and 2 in precancerous condition and gastric cancer.
abstract: OBJECTIVE
  To study the expression of trefoil factor 1 (TFF1) and TFF2 in precancerous condition and gastric cancer and to explore the relationship between TFFs and tumorigenesis, precancerous condition and gastric cancer.
  
  
  METHODS
  The expression of TFF1 and TFF2 was immunohistochemically analyzed in paraffin-embedded samples from 140 patients including 35 cases of chronic superficial gastritis (CSG), 35 cases of gastric ulcer (GU), 35 cases of chronic atrophic gastritis (CAG) and 35 cases of gastric cancer (GC).
  
  
  RESULTS
  TFF1 and TFF2 were located in cytoplasm of gastric mucous cells. In CSG, GU, CAG and GC, the level of TFF1 expression had a decreased tendency (P < 0.05). The expression of TFF2 was higher in GU than in CSG, but the difference was not significant. The expression of TFF2 also had a decreased tendency in GU, CAG, and GC (P < 0.05).
  
  
  CONCLUSIONS
  The reduced expression of TFF1 and TFF2 in precancerous conditions and gastric cancer may be associated with the proliferation and malignant transformation of gastric mucosa. More investigations are needed to explore the mechanism of TFFs and the relationship between TFFs and gastric cancer.
authors.affiliation: Department of Gastroenterology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang Province, China. shp1995@126.com
authors.forename: Shu-Qing
authors.initials: SQ
authors.lastname: Shi
authors.forename: Jian-Ting
authors.initials: JT
authors.lastname: Cai
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Yang
mesh_terms: D016022:Case-Control Studies; D049109:Cell Proliferation; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D018450:Disease Progression; D005260:Female; D005753:Gastric Mucosa / Q000737:chemistry / Q000473:pathology; D005756:Gastritis / Q000473:pathology / Q000503:physiopathology; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D010455:Peptides / Q000235:genetics* / Q000502:physiology; D011230:Precancerous Conditions / Q000737:chemistry* / Q000235:genetics / Q000473:pathology; D013274:Stomach Neoplasms / Q000737:chemistry* / Q000235:genetics / Q000473:pathology; D000071163:Trefoil Factor-1; D000071164:Trefoil Factor-2; D025521:Tumor Suppressor Proteins / Q000235:genetics* / Q000502:physiology
chemical_list: D010455:Peptides; C051838:TFF1 protein, human; C000604007:TFF2 protein, human; D000071163:Trefoil Factor-1; D000071164:Trefoil Factor-2; D025521:Tumor Suppressor Proteins