title: [Changes of serum pepsinogen I/II ratio induced by Helicobacter pylori infection in hypertensive patients].
abstract: OBJECTIVE
  To investigate the changes in serum pepsinogen (PG) I/II ratio induced by Helicobacter pylori (Hp) infection and assess the value of PG I/II test in evaluating organ damages in hypertensive patients.
  
  
  METHODS
  The serum total cholesterol, triglycerides, high density lipoprotein (HDL) and PG I/II ratio were tested in 288 hypertensive patients with or without Hp infection. The PG I/II ratio between the patients with different grade of hypertension, patients with and without hypertensive nephropathy, patients with and without hypertensive retinopathy. The relationship of PG I/II ratio with serum total cholesterol, triglycerides and HDL was analyzed with Pearson's correlation analysis and the effectiveness of PG I/II ratio in the the diagnosis of nephropathy and retinopathy was evaluated by receiver-operating characteristic curve (ROC) analysis.
  
  
  RESULTS
  Compared with patients without Hp infection, the Hp-infected patients showed significantly decreased PG I/II ratio and increased total cholesterol and triglycerides (P<0.05), but their HDL levels, systolic pressure and diastolic pressure were comparable (P>0.05). PG I/II ratio was significantly decreased in patients with nephropathy and retinopathy compared with the patients without nephropathy and retinopathy (P<0.05), and was similar between patients with different grades of hypertension (P>0.05). PG I/II ratio was negatively correlated with serum total cholesterol and triglycerides in the hypertensive patients (P<0.05), and its area under curve (AUC) of ROC was 0.79 and 0.82 in the diagnosis of nephropathy and retinopathy, respectively.
  
  
  CONCLUSIONS
  Hypertensive patients with nephropathy and retinopathy have obviously decreased PG I/II ratio, which can be used for screening organ damages in hypertensive patients.
authors.affiliation: Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.E-mail: Xchzh-nfyy@163.com.
authors.forename: Chuanzhen
authors.initials: C
authors.lastname: Xie
authors.forename: Xiaojia
authors.initials: X
authors.lastname: Hu
authors.forename: Fei
authors.initials: F
authors.lastname: Liu
mesh_terms: D016481:Helicobacter Infections / Q000097:blood*; D016480:Helicobacter pylori; D006801:Humans; D006973:Hypertension / Q000097:blood* / Q000382:microbiology; D020116:Pepsinogen A / Q000097:blood*; D020115:Pepsinogen C / Q000097:blood*
chemical_list: D020115:Pepsinogen C; D020116:Pepsinogen A