title: A prospective study of Helicobacter pylori seropositivity and the risk for future myocardial infarction among socioeconomically similar U.S. men.
abstract: BACKGROUND
  The role of Helicobacter pylori as a determinant of cardiovascular disease is controversial.
  
  
  OBJECTIVE
  To determine whether previous exposure to H. pylori is associated with an increased risk for myocardial infarction.
  
  
  METHODS
  Prospective case-control study.
  
  
  METHODS
  Physicians' Health Study.
  
  
  METHODS
  Initially healthy U.S. men.
  
  
  METHODS
  Titers of IgG antibody against H. pylori and several inflammatory markers were measured in baseline blood samples obtained from 445 men who subsequently had a myocardial infarction (case-patients) and 445 men matched for age and smoking status who remained free of vascular disease (controls) during a mean follow-up of 8.9 years.
  
  
  RESULTS
  Baseline seropositivity was similar among case-patients and controls (43.4% vs. 44.3%; rate ratio, 0.96 [95% CI, 0.7 to 1.3]). Minimal evidence of association was found between magnitude of seropositivity and subsequent risk and between seropositivity and levels of the inflammatory biomarkers.
  
  
  CONCLUSIONS
  In a socioeconomically homogeneous population, we found limited evidence of association between H. pylori exposure and risk for future myocardial infarction.
authors.affiliation: Center for Cardiovascular Disease Prevention, Brigham and Women's Hospital, 900 Commonwealth Avenue East, Boston, MA 02215, USA. pridker@partners.org
authors.forename: P M
authors.initials: PM
authors.lastname: Ridker
authors.forename: J
authors.initials: J
authors.lastname: Danesh
authors.forename: L
authors.initials: L
authors.lastname: Youngman
authors.forename: R
authors.initials: R
authors.lastname: Collins
authors.forename: M J
authors.initials: MJ
authors.lastname: Stampfer
authors.forename: R
authors.initials: R
authors.lastname: Peto
authors.forename: C H
authors.initials: CH
authors.lastname: Hennekens
mesh_terms: D015415:Biomarkers / Q000097:blood; D016022:Case-Control Studies; D015986:Confounding Factors, Epidemiologic; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D008297:Male; D009203:Myocardial Infarction / Q000209:etiology*; D011446:Prospective Studies; D012307:Risk Factors; D012959:Socioeconomic Factors; D013997:Time Factors
chemical_list: D015415:Biomarkers; D007074:Immunoglobulin G