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Background  Whether plasma ghrelin/obestatin levels are associated with  Helicobacter pylori  ( H .  pylori ) infection, subtypes of functional dyspepsia (FD), and gastric mucosal histology has not yet been established in elderly patients.    Objective  The aim of this study was to determine whether plasma ghrelin and obestatin levels are related to gastric mucosal histology,  H .  pylori  infection, and FD subtypes in elderly patients with FD.    Methods  Ninety-two patients diagnosed with FD and older than 60 years (median age 69.4; range 60–88) were included. Clinical symptoms investigated included postprandial fullness, epigastric pain, epigastric soreness, nausea, and vomiting. According to the Rome III criteria, patients diagnosed with FD were divided into two subtypes: epigastric pain syndrome (EPS) and postprandial distress syndrome (PDS). Plasma ghrelin and obestatin levels were measured using enzyme immunoassay, and histological examination of gastric mucosa was performed.  H .  pylori  infection was determined by histopathological examination of gastric mucosal biopsy and/or Campylobacter-like organism test.    Results  In our study, plasma ghrelin levels and plasma ghrelin/obestatin (G/O) ratio were significantly lower in subjects with intestinal metaplasia compared with those without intestinal metaplasia (ghrelin, p = 0.010; G/O ratio, p = 0.012). On the other hand, there were no significant differences in plasma ghrelin and obestatin levels between  H .  pylori –positive and  H .  pylori –negative groups. (ghrelin, p = 0.130; obestatin, p = 0.888). Similarly, no significant differences were detected between the EPS and PDS groups (ghrelin, p = 0.238; obestatin, p = 0.710).    Conclusions  Patients with intestinal metaplasia, a known precursor of gastric cancer, had significantly less plasma ghrelin levels and G/O ratio than those without intestinal metaplasia.

Plasma ghrelin level and plasma ghrelin/obestatin ratio are related to intestinal metaplasia in elderly patients with functional dyspepsia