title: [Expression of gastrin, somatostatin, PCNA and Fas-L in the mucosa of gastric antrum of children with chronic gastritis and duodenal ulcer].
abstract: OBJECTIVE
  Since application of pediatric gastroscopy in the mid-nineteen nineties, there has been a trend that the prevalence rates of pediatric gastritis and duodenal ulcer (DU) are increasing. The diagnosed rate of pediatric gastritis has accounted for 85% - 95% of the total number of children who received gastroscopy, and the rate of DU accounted for 8% - 22%. Such a high rates of the diseases may influence the development of the children severely. However, the etiology and pathogenesis of pediatric chronic gastritis and DU have not been completely elucidated. The disordered gastrointestinal hormones play a crucial role in the pediatric chronic gastritis and DU. This study focused on the expression of gastrin (GAS), somatostatin (SS) in the mucosa of gastric antrum and PCNA and Fas-L in the sinus ventriculi and their possible roles in the pathogenesis of pediatric chronic gastritis and DU.
  
  
  METHODS
  The sinus ventriculi mucosal samples of 83 cases were collected via gastroscopic biopsy from the hospital during the recent two years and the cases were divided into five groups: group A, chronic superficial gastritis, Helicobacter pylori (Hp)(+); group B, chronic superficial gastritis, Hp(-); group C, DU, Hp(+); Group D, DU, Hp(-); Group E, normal sinus ventriculi mucosa, Hp(-). Immunohistochemical staining (En Vision) was carried out for GAS, SS, PCNA and Fas-L, and positive cells of each slide were counted (x 400). Statistically significant differences among groups for continuous data were assessed with the software SPSS10.0.
  
  
  RESULTS
  The expressions of GAS and SS in the groups A through E had no significant difference. The expression of PCNA in group A was significantly higher than that in group B (P < 0.05), and no significant differences were found among the other groups. There were no significant differences in expressions of Fas-L among the five groups.
  
  
  CONCLUSIONS
  There seems to be an increasing tendency in the expressions of GAS and SS in children with chronic gastritis and duodenal ulcer. Hp infection promotes the multiplication of the sinus ventriculi mucosal epithelium cells in the pediatric chronic gastritis.
authors.affiliation: Department of Gastroenterology, Yuying Children's Hospital, Wenzhou Medical College, Wenzhou 325027, China.
authors.forename: Xiao-zhi
authors.initials: XZ
authors.lastname: Xie
authors.forename: Zong-min
authors.initials: ZM
authors.lastname: Wang
authors.forename: Hai-yan
authors.initials: HY
authors.lastname: Zhang
authors.forename: Lan
authors.initials: L
authors.lastname: Wang
authors.forename: Bao-hui
authors.initials: BH
authors.lastname: Gao
authors.forename: Xue-mei
authors.initials: XM
authors.lastname: Li
authors.forename: Wei-guo
authors.initials: WG
authors.lastname: Hu
mesh_terms: D000293:Adolescent; D001706:Biopsy; D002648:Child; D002675:Child, Preschool; D004381:Duodenal Ulcer / Q000378:metabolism* / Q000382:microbiology / Q000473:pathology; D053222:Fas Ligand Protein / Q000378:metabolism*; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism* / Q000473:pathology; D005755:Gastrins / Q000378:metabolism*; D005756:Gastritis / Q000378:metabolism* / Q000382:microbiology / Q000473:pathology; D005773:Gastroscopy; D016481:Helicobacter Infections / Q000382:microbiology; D016480:Helicobacter pylori / Q000302:isolation & purification / Q000472:pathogenicity; D006801:Humans; D007150:Immunohistochemistry; D007413:Intestinal Mucosa / Q000378:metabolism / Q000473:pathology; D008297:Male; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism*; D011706:Pyloric Antrum / Q000378:metabolism* / Q000473:pathology; D013004:Somatostatin / Q000378:metabolism*
chemical_list: D053222:Fas Ligand Protein; D005755:Gastrins; D018809:Proliferating Cell Nuclear Antigen; D013004:Somatostatin