title: Elevated serum matrix metalloproteinase-3 and -7 in H. pylori-related gastric cancer can be biomarkers correlating with a poor survival.
abstract: BACKGROUND
  Helicobacter pylori (H. pylori) infection up-regulates the expression of matrix metalloproteinases (MMPs), which may be involved in chronic inflammation, ulceration, and even cancer development. This study aimed to test if serum levels of MMP-3, -7, and -9 are correlated with different clinical outcomes in H. pylori-infected subjects and if these are predictive of progression to H. pylori-related gastric cancer.
  
  
  METHODS
  Two hundred one patients, 28 with H. pylori-negative gastritis and 173 with different H. pylori-positive gastrointestinal diseases (46 gastritis, 43 duodenal ulcers, 29 gastric ulcers, and 55 gastric cancers) were assessed for serum MMP-3, -7, and -9 titers by enzyme-linked immunosorbent assay and validated to their correlations with the different clinical features and survival of patients with H. pylori-positive gastric cancer.
  
  
  RESULTS
  Among the H. pylori-infected subjects, gastric cancer patients had higher serum levels of MMP-3 and MMP-7 than those with duodenal ulcer and gastritis (P < 0.05). For gastric cancer patients, concomitant elevated MMP-3 (>14 ng/ml) and MMP-7 (>4.5 ng/ml) independently correlated with lymph node invasion (P < 0.05) and could be predictive to have shorter 2- or 5-year survivals (log rank test, P = 0.006).
  
  
  CONCLUSIONS
  Concomitant elevations of MMP-3 and MMP-7 serum levels in the H. pylori-infected gastric cancer patients could serve as potential biomarkers to correlate with poor survival.
authors.affiliation: Institute of Basic Medical Sciences, National Cheng Kung University Medical Center, Tainan, Taiwan.
authors.forename: Yi-Chun
authors.initials: YC
authors.lastname: Yeh
authors.forename: Bor-Shyang
authors.initials: BS
authors.lastname: Sheu
authors.forename: Hsiu-Chi
authors.initials: HC
authors.lastname: Cheng
authors.forename: Yen-Lin
authors.initials: YL
authors.lastname: Wang
authors.forename: Hsiao-Bai
authors.initials: HB
authors.lastname: Yang
authors.forename: Jiunn-Jong
authors.initials: JJ
authors.lastname: Wu
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D016481:Helicobacter Infections / Q000150:complications / Q000201:enzymology* / Q000382:microbiology; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006801:Humans; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008207:Lymphatic Metastasis; D008297:Male; D019278:Matrix Metalloproteinase 3 / Q000097:blood*; D020783:Matrix Metalloproteinase 7 / Q000097:blood*; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D018570:Risk Assessment; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000201:enzymology* / Q000382:microbiology / Q000401:mortality* / Q000556:secondary; D013997:Time Factors; D015854:Up-Regulation
chemical_list: D014408:Biomarkers, Tumor; C511768:MMP3 protein, human; D019278:Matrix Metalloproteinase 3; C060932:MMP7 protein, human; D020783:Matrix Metalloproteinase 7
references.citation: Gut. 1984 Nov;25(11):1203-10
references.pmid: 6500361