title: [The effect of recombinant HSP47siRNA on the pathological scar in nude mice: in vivo study].
abstract: OBJECTIVE
  To study the significance of HSP47 gene in the development of pathological scar.
  
  
  METHODS
  The nude mice were used to reconstruct animal model of pathological scar. 16 days later, the mixture of recombinant HSP47siRNA and liposome was injected into the pathological scar in experimental group. In the control group, 0.25 ml PBS was injected intraperitoneally. 7 days after injection, the specimens were collected for detection of mRNA of HSP47, the collagen and for immunohistochemical study.
  
  
  RESULTS
  In the control and experimental group, the collagen content was (91.71 +/- 1.24)% and (82.12 +/- 4.79)%, respectively; the expression of HSP47mRNA was 1 042 862.01 +/- 604 194.36 and 306 123.68 +/- 105 857.08, respectively; the expression of collagen I mRNA was 10 228 614.70 +/- 2 532 879.04 and 6 011 841.97 +/- 2 886 897.17, respectively;the scar volume was (255.60 +/- 21.34) mm3 and (132.99 +/- 24.06) mm3, respectively. All the above results showed significant difference between the two groups (P < 0.05).
  
  
  CONCLUSIONS
  The collagen production can be reduced through suppression of the expression of HSP47 gene. It indicates that HSP47 gene enhance the development of keloid and could be used as the target of treatment.
authors.affiliation: The Affilliated Hospital of Xuzhou Medical College, Xuzhou 221002, China.
authors.forename: Pei-Sheng
authors.initials: PS
authors.lastname: Jin
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Chen
authors.forename: Ying
authors.initials: Y
authors.lastname: Cen
authors.forename: Ai-Jun
authors.initials: AJ
authors.lastname: Zhang
authors.forename: Chang-Bo
authors.initials: CB
authors.lastname: Tao
authors.forename: Xue-Yang
authors.initials: XY
authors.lastname: Li
mesh_terms: D000818:Animals; D002921:Cicatrix / Q000235:genetics* / Q000473:pathology / Q000628:therapy; D003094:Collagen / Q000096:biosynthesis; D015316:Genetic Therapy; D005822:Genetic Vectors; D050958:HSP47 Heat-Shock Proteins / Q000235:genetics / Q000627:therapeutic use*; D008081:Liposomes / Q000627:therapeutic use; D051379:Mice; D008819:Mice, Nude; D012333:RNA, Messenger / Q000235:genetics; D034741:RNA, Small Interfering / Q000627:therapeutic use
chemical_list: D050958:HSP47 Heat-Shock Proteins; D008081:Liposomes; D012333:RNA, Messenger; D034741:RNA, Small Interfering; D003094:Collagen