title: [The conditions of Helicobacter pylori colonization in different gastric diseases].
abstract: OBJECTIVE
  To investigate the condition of Helicobacter pylori (Hp) colonization in different gastric diseases and the application of immunostaining technique in Hp density measurement.
  
  
  METHODS
  Biopsy specimens of gastric mucosa were obtained from 174 patients with different gastric diseases confirmed by pathological examination, 99 males and 75 females, aged 53.37 (19-87), 135 from Zhuanghe, a high risk area of gastric cancer, and 39 from Shenyang, a low risk area. Hematoxylin and eosin (HE) staining and immunohistochemistry were used to detect the Hp density in different parts of gastric mucosa.
  
  
  RESULTS
  When the grade of Hp density in the gastric mucosa epithelium cell surface and lumen of gland < 1 there was a significant difference between HE stain and immunohistochemistry (chi(2) = 9.446, P < 0.01), however, when the grade of Hp density in the gastric mucosa epithelium cell surface and lumen of gland > 1 there was no significant difference between them (P > 0.05). The grade of Hp density of gastric mucosa epithelium cell surface and lumen of gland in superficial gastritis was > 1, significantly higher than those of atrophic gastritis group (23.8%) and gastric cancer group (16.7%) (chi(2) = 2.780, P > 0.05; chi(2) = 4.876, P > 0.05). The Hp colonization density in the gastric mucosa epithelium cell surface and lumen of the patients from Zhuanghe region was significantly lower than that of the patients from Shenyang region (chi(2) = 5.915, P = 0.015); and the Hp density in the gastric mucus in the patients from Zhuanghe was significantly higher than that of the patients from Shenyang region (chi(2) = 8.879, P = 0.003, chi(2) = 22.036, P = 0.000). The grades of Hp density within the surface mucous gel layer in atrophic gastritis and gastric cancer was significantly higher than that of the superficial gastritis group (53.7%, chi(2) = 11.002, P < 0.05; chi(2) = 19.401, P < 0.05).
  
  
  CONCLUSIONS
  The density of Hp colonization in gastric mucosa epithelium cell surface and lumen of gland gradually decreases in the order of superficial gastritis-atrophic gastritis-gastric cancer, while the density of Hp within the surface mucous gel layer increases in the order of superficial gastritis- atrophic gastritis-gastric cancer.
authors: Cancer Institute, First Affiliated Hospital, China Medical University, Shenyang 110001, China.
authors: Yun-En
authors: YE
authors: Liu
authors: Xiu-Wen
authors: XW
authors: Yu
authors: Nan-Nan
authors: NN
authors: Dong
authors: Yue-Hua
authors: YH
authors: Gong
authors: Li-Ping
authors: LP
authors: Sun
authors: Yuan
authors: Y
authors: Yuan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015169:Colony Count, Microbial; D005260:Female; D005753:Gastric Mucosa / Q000382:microbiology* / Q000473:pathology; D005756:Gastritis / Q000382:microbiology / Q000473:pathology; D005757:Gastritis, Atrophic / Q000382:microbiology / Q000473:pathology; D016481:Helicobacter Infections / Q000382:microbiology / Q000473:pathology; D016480:Helicobacter pylori / Q000254:growth & development / Q000302:isolation & purification*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D013272:Stomach Diseases / Q000382:microbiology* / Q000473:pathology; D013274:Stomach Neoplasms / Q000382:microbiology / Q000473:pathology; D013276:Stomach Ulcer / Q000382:microbiology / Q000473:pathology; D055815:Young Adult