title: Expression of mucosal cyto-chemokine mRNAs in patients with Helicobacter pylori infection.
abstract: BACKGROUND
  Helicobacter pylori-induced destruction of the gastroduodenal mucosal barrier is initiated with mucosal infiltration of inflammatory cells. Cytokines and chemokines have been suggested to play important roles in the migration and activation of these inflammatory cells into the mucosa. The present study aimed to investigate expression rates of cyto-chemokine mRNAs using gastric mucosal biopsy specimens.
  
  
  METHODS
  In 98 patients infected with Helicobacter pylori, mucosal mRNA expression rates of cytokines (IL-1 beta, IL-6, and IL-10), C-C chemokines (macrophage inflammatory protein 1 alpha (MIP-1 alpha), and macrophage inflammatory protein 1 beta (MIP-1 beta), monocyte chemotactic and activating factor (MCAF), regulated on activation, normal T cell expressed and presumably secreted (RANTES)) and C-X-C chemokines (IL-8 and growth regulated a (GRO-alpha)) were examined using reverse transcription polymerase chain reaction (RT-PCR).
  
  
  RESULTS
  The expression rates of mRNA for IL-8, GRO-alpha, MIP-1 alpha and RANTES were significantly more increased in H. pylori-positive patients than in H. pylori-negative patients. However, the expressions of IL-1 beta, IL-6 and IL-10 mRNA were statistically not different between two groups. After eradication of H. pylori, expressions of mRNA for three cytokines (IL-1 beta, IL-6 and IL-10), four C-C chemokines (MIP-1 alpha, MIP-1 beta, MCAF and RANTES) and two C-X-C chemokines (IL-8 and GRO-alpha) were significantly decreased.
  
  
  CONCLUSIONS
  These results suggest that C-X-C chemokines and some C-C chemokines play important roles in H. pylori-associated peptic ulcer diseases.
authors.affiliation: Department of Internal Medicine, College of Medicine, Chungang University, Seoul, Korea.
authors.forename: S M
authors.initials: SM
authors.lastname: Park
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.forename: Y H
authors.initials: YH
authors.lastname: Hong
authors.forename: H R
authors.initials: HR
authors.lastname: Jung
authors.forename: J
authors.initials: J
authors.lastname: Park
authors.forename: J G
authors.initials: JG
authors.lastname: Kim
authors.forename: B C
authors.initials: BC
authors.lastname: Yoo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019742:Chemokines, CC / Q000378:metabolism; D019743:Chemokines, CXC / Q000378:metabolism; D016009:Chi-Square Distribution; D016207:Cytokines / Q000378:metabolism*; D005260:Female; D005753:Gastric Mucosa / Q000276:immunology* / Q000378:metabolism; D016481:Helicobacter Infections / Q000276:immunology* / Q000378:metabolism; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012333:RNA, Messenger / Q000378:metabolism
chemical_list: D019742:Chemokines, CC; D019743:Chemokines, CXC; D016207:Cytokines; D012333:RNA, Messenger