title: [The changes in endogenous growth factors and their relation with wound healing].
abstract: OBJECTIVE
  To explore the effects of endogenous growth factors on the formation of scars and ulcers after trauma or burn.
  
  
  METHODS
  The amounts of endogenous epidermal growth factor (EGF), tumor necrosis factor(TNF) and nitric oxide (NO) in scar and the developing granulation tissues after trauma or burn were determined and their relation with the wound healing were studied.
  
  
  RESULTS
  The results showed that EGF, TNF and NO could be found in all scars and the granulation tissues, but their concentration varied with different tissues, sex and age of patients. In male patients or youngsters, the amounts of EGF, TNF and NO in scars were much greater than those in granulation tissues.
  
  
  CONCLUSIONS
  The results indicated that the growth factors are necessary for wound healing, but insufficiency or overproduction of the endogenous growth factors may lead to the development of chronic ulcers or scar formation after trauma or burn.
authors.affiliation: 304th Hospital of People's Liberation Army, Beijing 100037.
authors.forename: X
authors.initials: X
authors.lastname: Fu
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: T
authors.initials: T
authors.lastname: Sun
mesh_terms: D000328:Adult; D002056:Burns / Q000378:metabolism*; D002921:Cicatrix / Q000378:metabolism; D004815:Epidermal Growth Factor / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D009569:Nitric Oxide / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism*; D014945:Wound Healing
chemical_list: D014409:Tumor Necrosis Factor-alpha; D009569:Nitric Oxide; D004815:Epidermal Growth Factor