title: Pathobiological characteristics of intestinal and diffuse-type gastric carcinoma in Japan: an immunostaining study on the tissue microarray.
abstract: OBJECTIVE
  To investigate the pathobiological features of intestinal and diffuse-type gastric carcinomas in the Japanese population.
  
  
  METHODS
  The expression of fragile histine triad (FHIT), phosphatase and tensin homology deleted from human chromosome 10 (PTEN), caspase-3, Ki-67, mutant p53, matrix metalloproteinase (MMP)-2, MMP-9, and extracellular matrix metalloproteinase inducer (EMMPRIN) on tissue microarrays of gastric carcinomas by immunostaining was examined in comparison with the clinicopathological characteristics between intestinal and diffuse-type cases.
  
  
  RESULTS
  Intestinal-type carcinoma frequently occurred in old men, whereas the diffuse type comparatively occurred more in young women (p<0.05). The diffuse-type carcinoma was more inclined to invasion into muscularis propria, lymphatic invasion and lymph node metastasis, and belonged to higher International Union against Cancer (UICC) staging (p<0.05) compared with intestinal-type counterparts. Expression of FHIT, PTEN, Ki-67, caspase-3, mutant p53 and EMPPRIN was higher in intestinal-type carcinomas than in diffuse-type carcinomas (p<0.05). Kaplan-Meier analysis indicated that patients with intestinal-type carcinomas had a higher cumulative survival rate (p<0.05).
  
  
  CONCLUSIONS
  Intestinal-type gastric carcinomas with a more favourable prognosis frequently show high levels of proliferation and apoptosis, and always accompany strong expression of FHIT, PTEN and mutant p53 and EMMPRIN. EMMPRIN expression might underlie the molecular basis of liver metastasis and higher proliferation of intestinal-type gastric carcinomas in Japan. Lauren's classification thus proved pathologically relevant for the clinical treatment of gastric carcinomas.
authors.affiliation: Department of Pathology School of Medicine, University of Toyama, Toyama, Japan. ytakano@ms.toyama-mpu.ac.jp
authors.forename: Huachuan
authors.initials: H
authors.lastname: Zheng
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takahashi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Murai
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Cui
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Nomoto
authors.forename: Shigeharu
authors.initials: S
authors.lastname: Miwa
authors.forename: Koichi
authors.initials: K
authors.lastname: Tsuneyama
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Takano
mesh_terms: D017766:Acid Anhydride Hydrolases / Q000378:metabolism; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D051926:Basigin / Q000378:metabolism; D014408:Biomarkers, Tumor / Q000378:metabolism*; D053148:Caspase 3 / Q000378:metabolism; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009363:Neoplasm Proteins / Q000378:metabolism*; D051059:PTEN Phosphohydrolase / Q000378:metabolism; D011379:Prognosis; D040081:Protein Array Analysis / Q000379:methods; D013274:Stomach Neoplasms / Q000378:metabolism* / Q000473:pathology; D016019:Survival Analysis; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism; D000099170:Bis(5'-adenosyl)triphosphatase
chemical_list: D017766:Acid Anhydride Hydrolases; D051926:Basigin; D014408:Biomarkers, Tumor; D053148:Caspase 3; D019394:Ki-67 Antigen; D009363:Neoplasm Proteins; D051059:PTEN Phosphohydrolase; D016159:Tumor Suppressor Protein p53; D000099170:Bis(5'-adenosyl)triphosphatase; C497886:BSG protein, human; C494929:PTEN protein, human