title: [EFFECT OF BONE MARROW MESENCHYMAL STEM CELLS ON GASTRIC ULCER REPAIRING].
abstract: OBJECTIVE
  To explore the ettect and mechanisms of bone marrow mesenchymal stem cells (BMSCs) on healing quality of acetic acid-induced gastric ulcer.
  
  
  METHODS
  Forty-eight clean grade male Wistar rats were used to establish the model of gastric ulcer with acetic acid and were randomly divided into 3 groups after 3 days of modeling, 16 rats each group. After the abdominal cavity was open and stomach was pulled out, no treatment was given in group A, 150 µL phosphate buffered saline (PBS) and 150 µL BMSCs at passage 4+PBS (1 x 10(8) cells/100 µL) were injected into the gastric wall surrounding the ulcer at 5 different points in groups B and C respectively. After 10 days, the ulcer area was measured, the mucosal thickness and the number of dilated glands were tested in the regenerative mucosa by histological method. And the expression of vascular endothelial growth factor (VEGF) was detected at ulcerative margin by immunohistochemical method.
  
  
  RESULTS
  The ulcer area in group C was significantly smaller than that of groups A and B (P < 0.01), but no significant difference was found between groups A and B (P > 0.05). HE staining showed that group C had thicker regenerative gastric mucosa, less dilated glands, and more regular mucosal structure than groups A and B, showing significant differences in regenerative gastric mucosa thickness and dilated glands number (P < 0.01), but no significant difference between groups A and B (P > 0.05). Immunohistochemical staining showed that the positive expression of VEGF in the ulcer margin mucosa of group C was significantly higher than that of groups A and B. The integral absorbance (IA) value of VEGF expression in group C was significantly higher than that in groups A and B (P < 0.01), but no significant difference between groups A and B (P > 0.05).
  
  
  CONCLUSIONS
  BMSCs can accelerate ulcer healing by the secretion of VEGF, and improve the quality of ulcer healing.
authors.forename: Guozhong
authors.initials: G
authors.lastname: Wang
authors.forename: Chengjun
authors.initials: C
authors.lastname: Li
authors.forename: Xichao
authors.initials: X
authors.lastname: Fan
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Xiao
authors.forename: Li
authors.initials: L
authors.lastname: Jin
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D016222:Fibroblast Growth Factor 2 / Q000008:administration & dosage* / Q000502:physiology; D005753:Gastric Mucosa / Q000098:blood supply / Q000502:physiology*; D006412:Hematopoietic Stem Cells; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D013276:Stomach Ulcer / Q000503:physiopathology / Q000628:therapy*; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism*; D014945:Wound Healing
chemical_list: D042461:Vascular Endothelial Growth Factor A; D016222:Fibroblast Growth Factor 2