title: In vivo transplantation of bone marrow mesenchymal stem cells accelerates repair of injured gastric mucosa in rats.
abstract: BACKGROUND
  Adult stem cells provide a promising alternative for the treatment of injured tissues. We aimed to investigate the effect of in vivo transplantation of bone marrow mesenchymal stem cells (BMMSCs) on injured gastric mucosa in rats.
  
  
  METHODS
  The gastric ulcer in rats was induced by indomethacin. BMMSCs from male rats, labeled with the fluorescent cell linker 5,6-carboxyfluorescein diacetate succinimidyl ester (CFDA SE), were transplanted into the female rats via tail vein injection. The healing process of gastric ulcers was monitored by HE staining. The protein levels of vascular endothelial growth factor (VEGF) and the epidermal growth factor receptor (EGFR) in the injured gastric mucosa were determined by immunohistochemistry.
  
  
  RESULTS
  At 48 and 72 hours after BMMSCs transplantation, the CFDA SE labeled cells were found scattered in the injured gastric mucosa, but not in the gastric mucosa of control rats. At 72 hours after BMMSCs transplantation, the mean ulcer index was 12.67 ± 2.16 in the BMMSCs transplanted group and 17.33 ± 1.97 in vehicle-treated controls (P < 0.01). Both VEGF and EGFR protein expression levels were significantly higher in the gastric section from the rats that received BMMSCs transplantation as compared to rats without BMMSCs transplantation.
  
  
  CONCLUSIONS
  Autologous BMMSCs transplantation can accelerate gastric ulcer healing in injured gastric mucosa in a rodent model.
authors.affiliation: Department of Gastroenterology, Southern Building, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Chang
authors.forename: Li
authors.initials: L
authors.lastname: Yan
authors.forename: Chang-zheng
authors.initials: CZ
authors.lastname: Wang
authors.forename: Wen-hui
authors.initials: WH
authors.lastname: Zhang
authors.forename: Ya-zhuo
authors.initials: YZ
authors.lastname: Hu
authors.forename: Ben-yan
authors.initials: BY
authors.lastname: Wu
mesh_terms: D000818:Animals; D016026:Bone Marrow Transplantation; D002465:Cell Movement; D066246:ErbB Receptors / Q000032:analysis; D005260:Female; D005753:Gastric Mucosa / Q000737:chemistry / Q000473:pathology*; D024282:Genes, sry; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D051381:Rats; D017208:Rats, Wistar; D013276:Stomach Ulcer / Q000473:pathology / Q000503:physiopathology / Q000628:therapy*; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis
chemical_list: D042461:Vascular Endothelial Growth Factor A; D066246:ErbB Receptors