title: [Expressive characteristics of epidermal growth factor and its receptor in tissues of fetal and adult intestines].
abstract: OBJECTIVE
  To explore the expressive characteristics of epidermal growth factor (EGF) and its receptor (EGFR) in tissues of fetal and adult intestines.
  
  
  METHODS
  The expression intensity and distribution of EGF and EGFR were detected with pathological and immunohistochemical methods in 6 specimens of adult (16-54 years) intestines and 18 specimens of fetal intestines with different gestational ages (13-31 weeks).
  
  
  RESULTS
  Positive protein particles of EGF and EGFR could be detected in tissues of fetal and adult intestines. The protein expressions of EGF and EGFR were elevated progressively with the gestational age. EGF was mainly located in the cytoplasm and extracellular matrix of intestinal villus cells, endothelial cells and tunica serosa epithelial cells, while EGFR chiefly distributed in the cellular membrane of these cells.
  
  
  CONCLUSIONS
  The endogenous EGF and EGFR might be involved in the intestinal development at embryonic stage, in the structural and functional maintenance at adult stage, and in the wound healing after injury.
authors.affiliation: Key Research Laboratory of Wound Repair, 304th Hospital of PLA, Beijing, P. R. China, 100037.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Xiao-bing
authors.initials: XB
authors.lastname: Fu
authors.forename: Tong-zhu
authors.initials: TZ
authors.lastname: Sun
mesh_terms: D000293:Adolescent; D000328:Adult; D004815:Epidermal Growth Factor / Q000096:biosynthesis*; D004847:Epithelial Cells / Q000378:metabolism; D066246:ErbB Receptors / Q000096:biosynthesis*; D005260:Female; D005333:Fetus / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D066298:In Vitro Techniques; D007413:Intestinal Mucosa / Q000378:metabolism; D007421:Intestine, Small / Q000166:cytology / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011247:Pregnancy
chemical_list: D004815:Epidermal Growth Factor; D066246:ErbB Receptors