title: The origin of non-H. pylori-related positive Giemsa staining in human gastric biopsy specimens: A prospective study.
abstract: BACKGROUND
  Upper gastrointestinal endoscopically biopsied specimens are usually sent for the diagnosis of Helicobacter pylori infection. The study aimed to determine the relationship between the origin of positive Giemsa staining and the grade of gastritis based on the updated Sydney system.
  
  
  METHODS
  Gastric biopsy specimens taken at the lesser curvature and greater curvature sides of the corpus and greater curvature side of the antrum were stained with H&E, Giemsa, anti-East Asian-specific antibody and anti-H. pylori antibody stains. Pyrosequencing analysis was performed in cases that showed discrepancy between the Giemsa and anti-H. pylori antibody staining.
  
  
  RESULTS
  Seventy-two out of 150 cases (48%) stained positive for anti-H. pylori antibody, of which 68 (94.4%) stained positive for anti-East Asian-specific antibody stain. Twelve of the 20 cases with discrepant results for Giemsa and anti-H. pylori antibody stains exhibited Campylobacter hyointestinalis infection. The grades of neutrophil activity (p<0.001) and chronic inflammation (p<0.001) were lower for Campylobacter infection than for East Asian CagA H. pylori-related infection.
  
  
  CONCLUSIONS
  C. hyointestinalis is the most common cause of non-H. pylori-related Giemsa positive infection, and is associated with lower grades of neutrophil activity and chronic inflammation than East Asian CagA H. pylori-related infection.
authors.affiliation: Department of Internal Medicine, Konkuk University School of Medicine, Seoul, South Korea.
authors.forename: Tae Ho
authors.initials: TH
authors.lastname: Seo
authors.forename: Sun-Young
authors.initials: SY
authors.lastname: Lee
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Uchida
authors.forename: Toshio
authors.initials: T
authors.lastname: Fujioka
authors.forename: Choon Jo
authors.initials: CJ
authors.lastname: Jin
authors.forename: Tae Sook
authors.initials: TS
authors.lastname: Hwang
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Han
mesh_terms: D000328:Adult; D000368:Aged; D000942:Antigens, Bacterial / Q000032:analysis; D001399:Azure Stains; D001426:Bacterial Proteins / Q000032:analysis; D001706:Biopsy; D002169:Campylobacter Infections / Q000473:pathology*; D044862:Campylobacter hyointestinalis / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D016009:Chi-Square Distribution; D005189:False Positive Reactions; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D005756:Gastritis / Q000382:microbiology* / Q000473:pathology; D016481:Helicobacter Infections / Q000473:pathology*; D016480:Helicobacter pylori / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011446:Prospective Studies; D056910:Republic of Korea; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D013270:Stomach / Q000382:microbiology* / Q000473:pathology
chemical_list: D000942:Antigens, Bacterial; D001399:Azure Stains; D001426:Bacterial Proteins; C080866:cagA protein, Helicobacter pylori